Kubota RTV1140CPX Workshop Manual
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Kubota RTV1140CPX Workshop Manual

Kubota wsm rtv1140cpx utility vehicle workshop manual
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WORKSHOP MANUAL
UTILITY VEHICLE
RTV1140CPX
KiSC issued 05, 2014 A

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  • Page 1 WORKSHOP MANUAL UTILITY VEHICLE RTV1140CPX KiSC issued 05, 2014 A...
  • Page 2 TO THE READER This Workshop Manual tells the servicing personnel about the mechanism, servicing and maintenance of the RTV1140CPX. It contains 4 parts: "Information", "General", "Mechanism" and "Servicing".  Information This section contains information below. • Safety First • Safety Label •...
  • Page 3 Record of Revisions For pdf, use search function {Search word} to find all the revised locations. Last digit Issue Reference of the Main Revised Point and Corrective Measures {Search word} month Page Code No. 2014.05 The topic of steering cylinder is corrected. 6-M5, 6-S14 KiSC issued 05, 2014 A...
  • Page 4 INFORMATION KiSC issued 05, 2014 A...

  • Page 5: Table Of Contents

    INFORMATION CONTENTS 1. SAFETY FIRST ..........................I-1 2. SAFETY DECALS .......................... I-4 3. SPECIFICATIONS........................I-12 4. TRAVELING SPEEDS........................I-13 5. DIMENSIONS ..........................I-14 KiSC issued 05, 2014 A...

  • Page 6: Safety First

    INFORMATION RTV1140CPX, WSM 1. SAFETY FIRST SAFETY FIRST • This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully.
  • Page 7 INFORMATION RTV1140CPX, WSM OPERATE SAFELY • Do not use the machine after you consume alcohol or medication or when you are tired. • Put on applicable clothing and safety equipment. • Use applicable tools only. Do not use alternative tools or parts.
  • Page 8 INFORMATION RTV1140CPX, WSM KEEP A GOOD AIRFLOW IN THE WORK AREA • If the engine is in operation, make sure that the area has good airflow. Do not operate the engine in a closed area. The exhaust gas contains poisonous carbon monoxide.

  • Page 9: Safety Decals

    INFORMATION RTV1140CPX, WSM 2. SAFETY DECALS The following safety decals are installed on the machine. If a decal becomes damaged, illegible or is not on the machine, replace it. The decal part number is listed in the parts list. WSM000001INI0013US0...
  • Page 10 INFORMATION RTV1140CPX, WSM 9Y1210293INI0002US0 KiSC issued 05, 2014 A...
  • Page 11 INFORMATION RTV1140CPX, WSM 9Y1210293INI0003US0 KiSC issued 05, 2014 A...
  • Page 12 INFORMATION RTV1140CPX, WSM 9Y1210293INI0004US0 KiSC issued 05, 2014 A...
  • Page 13 INFORMATION RTV1140CPX, WSM 9Y1210293INI0005US0 KiSC issued 05, 2014 A...
  • Page 14 INFORMATION RTV1140CPX, WSM 9Y1210293INI0006US0 KiSC issued 05, 2014 A...
  • Page 15 INFORMATION RTV1140CPX, WSM 9Y1210293INI0007US0 I-10 KiSC issued 05, 2014 A...
  • Page 16 INFORMATION RTV1140CPX, WSM 9Y1210293INI0008US0 CARE OF DANGER, WARNING AND CAUTION LABELS 1. Keep danger, warning and caution labels clean and free from obstructing material. 2. Clean danger, warning and caution labels with soap and water, dry with a soft cloth.

  • Page 17: Specifications

    INFORMATION RTV1140CPX, WSM 3. SPECIFICATIONS Model Worksite/Orange Worksite/Camo Make KUBOTA D1105-E3-UV Type 3 cylinders, 4-cycle, diesel, OHV Displacement 1.123 L (68.53 cu.in.) Engine Horsepower 18.5 kW (24.8 HP) Rated revolution 3000 min (rpm) Low idling revolution 1300 to 1400 min...

  • Page 18: Traveling Speeds

    INFORMATION RTV1140CPX, WSM 4. TRAVELING SPEEDS (At rated engine rpm) Rear gear shift lever km/h (mph) 13 (8) Medium 25 (16) High 40 (25) Reverse 16 (10) 9Y1210293INI0011US0 I-13 KiSC issued 05, 2014 A...

  • Page 19: Dimensions

    INFORMATION RTV1140CPX, WSM 5. DIMENSIONS 9Y1210293INI0012US0 I-14 KiSC issued 05, 2014 A...
  • Page 20 GENERAL KiSC issued 05, 2014 A...
  • Page 21 GENERAL CONTENTS 1. PRODUCT IDENTIFICATION ...................... G-1 [1] CYLINDER NUMBER ......................G-1 2. GENERAL PRECAUTIONS......................G-2 3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING ........G-3 [1] WIRING ..........................G-3 [2] BATTERY ..........................G-5 [3] FUSE ............................G-5 [4] CONNECTOR ........................G-5 [5] HANDLING OF CIRCUIT TESTER ..................

  • Page 22: Product Identification

    (2) Vehicle Identification Number 9Y1210293GEG0003US0 [1] CYLINDER NUMBER The cylinder numbers of KUBOTA diesel engine are designated as shown in the figure. The sequence of cylinder numbers is given as No.1, No.2 and No.3 starting from the gear case side.

  • Page 23: General Precautions

    Screws, bolts and nuts should be installed in their original position to prevent reassembly errors. • When special tools are required, use KUBOTA genuine special tools. Special tools which are not frequently used should be made according to the drawings provided.

  • Page 24: Handling Precautions For Electrical Parts And Wiring

    GENERAL RTV1140CPX, WSM 3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING To ensure safety and prevent damage to the machine and surrounding equipment, heed the following precautions in handling electrical parts and wiring. IMPORTANT • Check electrical wiring for damage and loosened connection every year.

  • Page 25: Wiring

    GENERAL RTV1140CPX, WSM • Securely clamp, being careful not to damage wiring. (1) Clamp (3) Clamp (Wind Clamp Spirally) (4) Welding Dent (2) Wire Harness 9Y1210301GEG0023US0 • Clamp wiring so that there is no twist, unnecessary sag, or excessive tension, except for movable part, where sag be required.

  • Page 26: Battery

    GENERAL RTV1140CPX, WSM [2] BATTERY • Take care not to confuse positive and negative terminal posts. • When removing battery cables, disconnect negative cable first. When installing battery cables, check for polarity and connect positive cable first. • Do not install any battery with capacity other than is specified (Ah).

  • Page 27: Handling Of Circuit Tester

    GENERAL RTV1140CPX, WSM • Use sandpaper to remove rust from terminals. • Repair deformed terminal. Make sure that there is no terminal being exposed or displaced. (1) Exposed Terminal (3) Sandpaper (2) Deformed Terminal (4) Rust WSM000001GEG0075US0 • Make sure that there is no female connector being too open.

  • Page 28: Color Of Wiring

    GENERAL RTV1140CPX, WSM [6] COLOR OF WIRING • Colors of wire are specified to the color codes. • This symbol of "/" shows color with stripe(s). (An example) Red stripe on white color: W/R Color of wiring Color code Black...

  • Page 29: Lubricants, Fuel And Coolant

    Until grease overflows (NLGI Grade No. 2) Range gear shift lever pivot 4WD lever pivot Rear drive shaft Moderate amount VHT pressure release pivot Throttle cable Silicone grease NOTE • * KUBOTA original transmission hydraulic fluid. KiSC issued 05, 2014 A...
  • Page 30 DOT3 fluid as a temporary replacement from a sealed container. However, the use of any non-KUBOTA brake fluid can cause corrosion and decrease the lift of the system. Have the brake system flushed and refilled with KUBOTA DOT3 GENUINE BRAKE FLUID as soon as possible.

  • Page 31: Tightening Torques

    GENERAL RTV1140CPX, WSM 5. TIGHTENING TORQUES [1] GENERAL USE SCREWS, BOLTS AND NUTS Tighten screws, bolts and nuts whose tightening torques are not specified in this Workshop Manual according to the table below. Indication on top of bolt No-grade or 4T...

  • Page 32: Metric Screws, Bolts And Nuts

    GENERAL RTV1140CPX, WSM [3] METRIC SCREWS, BOLTS AND NUTS Grade Property class 8.8 Property class 10.9 Unit N·m kgf·m lbf·ft N·m kgf·m lbf·ft 24 to 27 2.4 to 2.8 18 to 20 30 to 34 3.0 to 3.5 22 to 25 48 to 55 4.9 to 5.7...

  • Page 33: Maintenance Check List

    *4 When the battery is used for less than 100 hours per year, check the battery condition by reading the indicator annually. • The items listed below (@ marked) are registered as emission related critical parts by KUBOTA in the U.S.EPA non road emission regulation. As the engine owner, you are responsible for the performance of the required maintenance on the engine according to the below instruction.
  • Page 34 GENERAL RTV1140CPX, WSM Indication of Hour Meter Refer- After Impor- Item ence 700 hrs tant 100 150 200 250 300 350 400 450 500 550 600 650 700 page every 18 Brake pedal Check G-32     200 hrs...

  • Page 35: Check And Maintenance

    GENERAL RTV1140CPX, WSM 7. CHECK AND MAINTENANCE [1] DAILY CHECK To prevent trouble from occurring, it is important to know the condition of the vehicle well. Check it before starting. CAUTION • Be sure to check and service the vehicle on a level surface with the engine shut off and the parking brake "ON"...
  • Page 36 GENERAL RTV1140CPX, WSM Checking and Refueling CAUTION • Do not smoke while refueling. • Be sure to stop the engine before refueling. 1. Turn the key switch to "ON" check the amount of furl by fuel gauge. 2. Fill fuel tank when fuel gauge shows 1/4 or less fuel in tank.
  • Page 37 GENERAL RTV1140CPX, WSM Checking Engine Oil Level CAUTION • Be sure to stop the engine before checking the oil level. 1. Park the machine on a flat surface. 2. Check engine oil before starting the engine or 5 minutes or more after the engine has stopped.
  • Page 38 GENERAL RTV1140CPX, WSM Checking Coolant Level CAUTION • Do not remove radiator cap while coolant is hot. When cool, slowly rotate cap to the first stop and allow sufficient time for excess pressure to escape before removing the cap completely.
  • Page 39 • Never operate the vehicle, if the brake fluid is below the "MIN" mark. • Use only KUBOTA DOT3 GENUINE BRAKE FLUID from a sealed container. Using other type of oil ruins synthetic resin or rubber installed in brake system components, and may cause brake failure.
  • Page 40 GENERAL RTV1140CPX, WSM Checking Head Light, Turn Signal Light etc. 1. Inspect the lights for broken bulbs and lenses. 2. Replace if broken. 9Y1210293GEG0017US0 Checking Seat Belt and ROPS 1. Always check condition of seat belt and ROPS attaching hardware before operating vehicle.

  • Page 41: Check Points Of Initial 50 Hours

    GENERAL RTV1140CPX, WSM Checking Backup Beeper (If equipped) 1. Sit on the operator's seat. 2. Set the parking brake and stop the engine. 3. Shift the range gear shift lever to "NEUTRAL" position. 4. Turn the key to "ON" position.
  • Page 42 GENERAL RTV1140CPX, WSM Replacing Transmission Oil Filter CAUTION To avoid personal injury: • Be sure to stop the engine before changing the oil filter. • Allow engine to cool down sufficiently, oil can be hot and may cause burns. 1. Park the vehicle on a flat surface, raise the cargo bed, and mount the safety support.
  • Page 43 GENERAL RTV1140CPX, WSM Adjusting Brake Pedal CAUTION • Stop the engine and chock the wheels before checking brake pedal. • If movement is outside of the specifications, adjust the brake.  Checking brake pedal free travel 1. Release the parking brake.
  • Page 44 GENERAL RTV1140CPX, WSM Checking Front Brake Case 1. Remove the drain plug. 2. Check the brake case for brake fluid leak. 3. If there is brake fluid leak, check the brake seals. (See page 4-S11.) (1) Drain Plug (2) Allen Wrench...

  • Page 45: Check Points Of Every 50 Hours

    GENERAL RTV1140CPX, WSM Checking Tire 1. Check to see if tires are not damaged. 2. If the tires are cracked, bulged, or cut, or they are worn out, replace or repair them at once.  Tire Tread Depth Always replace the tires when the tread depth is worn to minimum depth.
  • Page 46 GENERAL RTV1140CPX, WSM Greasing 1. Apply a small amount of multi-purpose EP2 grease to the following points every 50 hours. If you operated the vehicle in extremely wet and muddy conditions, lubricate grease fittings more often. (1) Parking Brake Pivot...
  • Page 47 GENERAL RTV1140CPX, WSM (Continued) (8) 4WD Lever Pivot (Spray Type (10) VHT Pressure Release Pivot Grease) (Grease Fitting) (9) Rear Drive Shaft (Grease Fitting) 9Y1210293GEG0032US0 Greasing (Silicone Grease) 1. Apply a small amount of silicone grease to the accelerator wire (1) every 50 hours.

  • Page 48: Check Points Of Every 100 Hours

    GENERAL RTV1140CPX, WSM [4] CHECK POINTS OF EVERY 100 HOURS Cleaning Muffler (Spark Arrester) CAUTION • Before touching any part of an exhaust system, be absolutely sure that it has sufficient time to cool. • Always wear safety goggles and a (face) mask.
  • Page 49 GENERAL RTV1140CPX, WSM Checking Battery Condition DANGER To avoid the possibility of battery explosion: For the refillable type battery, follow the instructions below. • Do not use or charge the refillable type battery if the fluid level is below the LOWER (lower limit level) mark.
  • Page 50 GENERAL RTV1140CPX, WSM  Direction for Storage 1. When storing the vehicle for a long period, remove the battery from vehicle, adjust the electrolyte to the proper level (refillable type only) and store in a dry place out of direct sunlight.
  • Page 51 GENERAL RTV1140CPX, WSM Checking VHT Pressure Release CAUTION To avoid personal injury: • Do not touch muffler or exhaust pipes while they are hot; severe burns could result. 1. Park the vehicle on a level ground and set the parking brake.
  • Page 52 GENERAL RTV1140CPX, WSM Checking Fuel Line and Fuel Filter CAUTION • Be sure to stop the engine and remove the key when attempting to make the following checks and changes. • Never fail to check the fuel lines periodically. The fuel lines are subject to wear and aging.

  • Page 53: Check Points Of Every 200 Hours

    GENERAL RTV1140CPX, WSM Cleaning Air Cleaner Primary Element 1. Remove the air cleaner cover and primary element (2). 2. Clean the primary element; • When dry dust adheres to the element, blow compressed air from the inside, turning the element. Pressure of compressed air must be under 205 kPa (2.1 kgf/cm...
  • Page 54 5. After draining, reinstall the drain plug. 6. Install the under guard. 7. Fill with new KUBOTA SUPER UDT fluid up to the upper notch on the filling plug. (See page G-8.) How to check: Wipe filling plug clean with a rag and screw it into filling hole.
  • Page 55 GENERAL RTV1140CPX, WSM Checking Power Steering Line 1. Check to see that all lines and hose clamps are tight and not damaged. 2. If hoses and clamps are found worn or damaged, replace or repair them at once. (1) Power Steering Pressure Hose...

  • Page 56: Check Point Of Every 300 Hours

    2. To drain the used oil, remove the drain plug at the bottom of the transmission case and drain the oil completely into the oil pan. 3. After draining, reinstall the drain plug. 4. Fill with the new KUBOTA SUPER UDT fluid up to the upper notch on the dipstick. (Refer "LUBRICANTS,...

  • Page 57: Check Point Of Every 500 Hours

    2. Tilt the seat. 3. Remove the oil filter. (Take care of the oil that spills from filter.) 4. Put a film of clean KUBOTA SUPER UDT OIL on the rubber seal of the new filter. 5. Quickly tighten the filter until it contacts the mounting surface, then, with a filter wrench, tighten it an additional 1 turn only.

  • Page 58: Check Point Of Every 3000 Hours

    GENERAL RTV1140CPX, WSM [11] CHECK POINT OF EVERY 3000 HOURS Checking Injection Pump • See page 1-S15. 9Y1210293GEG0065US0 [12] CHECK POINT OF EVERY 1 YEAR Replacing Air Cleaner Primary Element and Secondary Element 1. Replace the both primary and secondary elements.
  • Page 59 GENERAL RTV1140CPX, WSM Flush Cooling System and Changing Coolant CAUTION • Do not remove the radiator cap while coolant is hot. When cool, slowly rotate cap to the first stop and allow sufficient time for excess pressure to escape before removing the cap completely.
  • Page 60 GENERAL RTV1140CPX, WSM Anti-Freeze CAUTION • When using antifreeze, put on some protection such as rubber gloves. (Antifreeze contains poison.) • If you should drink antifreeze, throw up at once and take medical attention. • When antifreeze comes in contact with the skin or clothing, wash it off immediately.

  • Page 61: Check Point Of Every 4 Years

    The LLC contains anticorrosive agent. If mixed with the cleaning agent, sludge may build up, adversely affecting the engine parts. 7. KUBOTA's genuine long-life coolant has a service life of 2 years. Be sure to change the coolant every 2 years. NOTE •...
  • Page 62 Replacing Slow Blow Fuses The slow blow fuses are intended to protect the electrical cabling. If any of them have blown out, be sure to pinpoint the causes. Never use any substitute, use only a KUBOTA genuine part.  Replacement procedure 1.
  • Page 63 GENERAL RTV1140CPX, WSM Replacing Light Bulb 1. Head lights: Take the bulb out of the light body and replace with a new one. 2. Other lights: Detach the lens and replace the bulb. Light Capacity Head lights 37.5 W Tail light...

  • Page 64: Special Tools

    GENERAL RTV1140CPX, WSM 8. SPECIAL TOOLS [1] SPECIAL TOOLS FOR ENGINE Special Use Puller Set Code No. • 07916-09032 Application • Use exclusively to pull out bearing, gears and other parts with ease. WSM000001GEG0011US0 Piston Ring Compressor Code No. • 07909-32111 Application •...
  • Page 65 GENERAL RTV1140CPX, WSM Diesel Engine Compression Tester (for Injection Nozzle) Code No. • 07909-30208 (Assembly) • 07909-30934 (A to F) • 07909-31211 (E and F) • 07909-31231 (H) • 07909-31251 (G) • 07909-31271 (I) • 07909-31281 (J) Application • Use to measure diesel engine compression and diagnostics of need for major overhaul.
  • Page 66 GENERAL RTV1140CPX, WSM Connecting Rod Alignment Tool Code No. • 07909-31661 Application • Use to check the connecting rod alignment. Applicable range • Connecting rod big end I.D. 30 to 75 mm dia. (1.2 to 2.9 in. dia.) • Connecting rod length 65.0 to 300 mm (2.56 to 11.8 in.)
  • Page 67 GENERAL RTV1140CPX, WSM Valve Guide Replacing Tool Application • To press out and press fit the valve guide. 225 mm (8.86 in.) 70 mm (2.8 in.) 45 mm (1.8 in.) 20 mm dia. (0.79 in. dia.) 12.7 to 12.9 mm dia. (0.500 to 0.507 in. dia.) 7.50 to 7.60 mm dia.
  • Page 68 GENERAL RTV1140CPX, WSM Crankshaft Bearing 1 Replacing Tool Application • Use to press out and press fit the crankshaft bearing 1. [Press Out] 135 mm (5.31 in.) 72 mm (2.83 in.) 40 mm radius (1.57 in. radius) 10 mm (0.39 in.) 22 mm (0.87 in.)

  • Page 69: Special Tools For Machine

    GENERAL RTV1140CPX, WSM [2] SPECIAL TOOLS FOR MACHINE Tie-rod End Lifter Code No. • 07909-39051 Application • Use to remove the tie-rod end with ease. WSM000001GEG0029US0 Relief Valve Pressure Tester Code No. • 07916-50045 Application • This allows easy measurement of relief set pressure.
  • Page 70 GENERAL RTV1140CPX, WSM Axle Support Application • Use for removing and installing rear axle bracket. 254.0 mm (10.0 in.) 28.7 mm dia. (1.13 in. dia.) 3.81 mm (1.50 in.) 12.7 mm (0.50 in.) 3.3 mm dia. (0.13 in. dia.) 25.4 mm (1.0 in.) 38.1 mm (1.50 in.)
  • Page 71 GENERAL RTV1140CPX, WSM Power Train Support Application • Use for dismounting and mounting transmission and engine one piece assembly. 186.9 mm (7.36 in.) 313.2 mm (12.33 in.) 3.3 mm (0.13 in.) 69.9 mm (2.75 in.) 203.2 mm (8.0 in.) 28.7 mm dia. (1.13 in. dia.) 25.4 mm dia.
  • Page 72 GENERAL RTV1140CPX, WSM Lower Arm Bush Tool Application • Use for removing and installing lower arm rubber bush. 256.5 mm (10.10 in.) 2.6 mm (0.102 in.) 22 mm (0.866 in.) 262.5 mm (10.33 in.) 34.65 mm dia. (1.364 in. dia.) 35 mm dia.
  • Page 73 GENERAL RTV1140CPX, WSM Check and High Pressure Relief Valve Assembly Tool Application • Use for readjusting relief valve pressure. 30 mm (1.181 in.) Chamfer 0.4 mm (0.157 in.) 1.05 rad (10 °) 21 mm (0.827 in.) Chamfer 3 mm (0.118 in.) Chamfer 0.3 mm (0.012 in.)

  • Page 74: Tires

    • Always maintain the correct tire pressure. Do not inflate tires above the recommended pressure as shown next page. IMPORTANT • Do not use tires other than those approved by KUBOTA. 9Y1210293GEG0089US0 [1] TYPE OF TIRE (1) Heavy Duty Work Site Tire (HDWS)

  • Page 75: Tire Pressure

    KUBOTA. Use with implements which are not sold or approved by KUBOTA and which exceed the maximum specifications listed below, or which are otherwise unfit for use with the KUBOTA Vehicle may result in malfunctions or failures of the vehicle, damage to other property and injury to the operator or others. [Any malfunctions or failures of the vehicle resulting from use with improper implements are not covered by the warranty.

  • Page 76: Cargo Bed

    GENERAL RTV1140CPX, WSM [4] CARGO BED WARNING • Never carry passengers in the cargo bed. They can be tossed about or even thrown off causing serious injury or death. • Never raise the cargo bed when it is loaded. (If hydraulic dump is not equipped.) •...
  • Page 77 ENGINE KiSC issued 05, 2014 A...
  • Page 78 MECHANISM CONTENTS 1. ENGINE BODY........................... 1-M1 2. LUBRICANTING SYSTEM ......................1-M2 3. COOLING SYSTEM ........................1-M3 4. FUEL SYSTEM........................... 1-M4 KiSC issued 05, 2014 A...

  • Page 79: Engine Body

    ENGINE RTV1140CPX, WSM 1. ENGINE BODY Closed Breather Closed breather system has been adopted to prevent the release of blow-by gas into the atmosphere. After its oil content is filtered by oil shield (4), the blow-by gas is fed back to the intake manifold through breather valve (3) to be used for re-combustion.

  • Page 80: Lubricanting System

    ENGINE RTV1140CPX, WSM 2. LUBRICANTING SYSTEM (1) Rocker Arm (2) Oil Pressure Switch (3) Rocker Arm Shaft (4) Valve (5) Governor Shaft (6) Idle Gear (7) Crankshaft (8) Oil Pump (9) Oil Strainer (10) Relief Valve (11) Push Rod (12) Tappet...

  • Page 81: Cooling System

    ENGINE RTV1140CPX, WSM 3. COOLING SYSTEM (1) Radiator (5) Thermostat From Transmission Oil To Air Conditioner Unit (2) Fan Drive Motor (6) Cylinder Head Cooler From Air Conditioner Unit (3) Radiator Fan (7) Cylinder Block To Transmission Oil Cooler (4) Water Pump The cooling system consists of a radiator (1), a radiator fan (3), a centrifugal water pump (4) and a thermostat (5).

  • Page 82: Fuel System

    ENGINE RTV1140CPX, WSM 4. FUEL SYSTEM (1) Injection Nozzle (2) Fuel Overflow Pipe (3) Fuel Tank (4) Fuel Filter (5) Fuel Feed Pump (6) Injection Pump (7) Injection Pipe Fuel from the fuel tank (3) passes through the fuel filter (5), and then enters the injection pump (8) after impurities such as dirt, water, etc.
  • Page 83 SERVICING CONTENTS 1. TROUBLESHOOTING.........................1-S1 2. SERVICING SPECIFICATIONS ....................1-S4 [1] ENGINE BODY........................1-S4 [2] LUBRICATING SYSTEM.......................1-S7 [3] COOLING SYSTEM ......................1-S7 [4] FUEL SYSTEM........................1-S8 3. TIGHTENING TORQUES......................1-S9 4. CHECKING, DISASSEMBLING AND SERVICING ..............1-S10 [1] CHECKING AND ADJUSTING....................1-S10 (1) Engine Body ........................1-S10 (2) Lubricating System ......................1-S12 (3) Cooling System ......................1-S13 (4) Fuel System........................1-S15 [2] PREPARATION ........................1-S19...

  • Page 84: Troubleshooting

    ENGINE RTV1140CPX, WSM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Engine Does Not No fuel Replenish fuel Start Air in the fuel system Bleed G-40 Water in the fuel system Change fuel and – repair or replace fuel system...
  • Page 85 ENGINE RTV1140CPX, WSM Reference Symptom Probable Cause Solution Page Either Black or Dark Overload Lessen load – Gray Exhaust Gas Is Low grade fuel used Use specified fuel Observed Fuel filter clogged Replace G-31 Air cleaner clogged Clean or replace...
  • Page 86 ENGINE RTV1140CPX, WSM Reference Symptom Probable Cause Solution Page Engine Overheated Engine oil insufficient Replenish Alternator belt broken or elongated Replace or adjust G-29, 1-S13 Cooling water insufficient Replenish Radiator net and radiator fin clogged with dust Clean – Inside of radiator corroded...

  • Page 87: Servicing Specifications

    ENGINE RTV1140CPX, WSM 2. SERVICING SPECIFICATIONS [1] ENGINE BODY Item Factory Specification Allowable Limit Compression Pressure 3.14 to 3.53 MPa 2.26 MPa 32.0 to 36.0 kgf/cm 23.0 kgf/cm 456 to 512 psi 327 psi • Difference among Cylinders – 10 % or less Valve Clearance (Cold) 0.145 to 0.185 mm...
  • Page 88 ENGINE RTV1140CPX, WSM Item Factory Specification Allowable Limit Push Rod Alignment – 0.25 mm 0.0098 in. Tappet to Tappet Guide Clearance 0.020 to 0.062 mm 0.07 mm 0.00079 to 0.0024 in. 0.003 in. • Tappet O.D. 19.959 to 19.980 mm –...
  • Page 89 ENGINE RTV1140CPX, WSM Item Factory Specification Allowable Limit Piston Pin to Small End Bushing Oil Clearance 0.014 to 0.038 mm 0.15 mm 0.00055 to 0.0014 in. 0.0059 in. • Piston Pin O.D. 22.002 to 22.011 mm – 0.86622 to 0.86657 in.

  • Page 90: Lubricating System

    ENGINE RTV1140CPX, WSM Item Factory Specification Allowable Limit Crankshaft to Crankshaft Bearing 3 Oil Clearance 0.0340 to 0.103 mm 0.20 mm 0.0013 to 0.0038 in. 0.0079 in. • Crankshaft Journal O.D. 51.921 to 51.940 mm – 2.0442 to 2.0448 in.

  • Page 91: Fuel System

    ENGINE RTV1140CPX, WSM [4] FUEL SYSTEM Item Factory Specification Allowable Limit Injection Pump Injection Timing 0.3011 to 0.3185 rad – (17.25 to 18.75 °) before T.D.C. Pump Element Fuel Tightness – 13.73 MPa 140.0 kgf/cm 1991 psi Delivery Valve Fuel Tightness...

  • Page 92: Tightening Torques

    ENGINE RTV1140CPX, WSM 3. TIGHTENING TORQUES Tightening torques of screws bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-10.) Item N·m kgf·m lbf·ft Rear wheel mounting screw 75 to 90 7.6 to 9.2...

  • Page 93: Checking, Disassembling And Servicing

    ENGINE RTV1140CPX, WSM 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (1) Engine Body Compression Pressure 1. Run the engine until it is warmed up. 2. Stop the engine. 3. Remove the air cleaner, the muffler and all glow plugs (or nozzles).

  • Page 94: Valve Clearance

    ENGINE RTV1140CPX, WSM Valve Clearance IMPORTANT • Valve clearance must be checked and adjusted when engine is cold. 1. Remove the cylinder head cover and the glow plugs. 2. Align the "1TC" mark (1) on the flywheel with alignment mark (2) on the rear end plate so that the No.

  • Page 95: Lubricating System

    ENGINE RTV1140CPX, WSM (2) Lubricating System Engine Oil Pressure 1. Remove the engine oil pressure switch (1), and install an oil pressure tester (2). 2. Start the engine. After warming up, measure the oil pressure at both idle and rated speeds.

  • Page 96: Cooling System

    ENGINE RTV1140CPX, WSM (3) Cooling System Alternator Belt Tension 1. Measure the deflection (A), depressing the belt halfway between the fan drive pulley and alternator pulley at specified force (98 N, 10 kgf, 22 Ibf). 2. If the measurement is not within the factory specifications, loosen the alternator mounting screws and relocate the alternator to adjust.
  • Page 97 ENGINE RTV1140CPX, WSM CAUTION • When removing the radiator cap, wait at least ten minutes after the engine has stopped and cooled down. Otherwise, there is risk of scalding to yourself and people rearby from steam and hot water. 9Y1210293ENS0013US0 Radiator Cap Air Leakage 1.

  • Page 98: Fuel System

    ENGINE RTV1140CPX, WSM (4) Fuel System Injection Timing 1. Remove the injection pipes. 2. Remove the engine stop solenoid. 3. Turn the flywheel counterclockwise (viewed from flywheel side) until the fuel fills up to the hole of the delivery valve holder (3) for No.
  • Page 99 5. Set the speed control lever to the maximum speed position. 6. Run the starter to increase the pressure. 7. If the pressure can not reach the allowable limit, replace the pump with new one or repair with a Kubota-authorized pump service shop. 13.73 MPa...
  • Page 100 8. Measure the time lapse for fuel pressure to drop to: 12.75 MPa (130 kgf/cm , 1849 psi). 9. If the measurement is less than allowable limit, replace the pump with new one or repair with a Kubota-authorized pump service shop. 10 seconds 13.73 → 12.75 MPa Factory specification 140.0 →...
  • Page 101 ENGINE RTV1140CPX, WSM Fuel Injection Pressure 1. Set the injection nozzle to a nozzle tester (Code No. 07909-31361). 2. Slowly move the tester handle to measure the pressure at which fuel begins jetting out from the nozzle. 3. If the measurement is not within the factory specifications, replace the adjusting washer (1) in the nozzle holder to adjust it.

  • Page 102: Preparation

    ENGINE RTV1140CPX, WSM [2] PREPARATION (1) Removing Outer Components Battery CAUTION • When disconnecting the battery cables, disconnect the negative cable from the battery first. When connecting, connect the positive cable to the battery first. 1. Set the seat to 1 row.
  • Page 103 ENGINE RTV1140CPX, WSM Draining Coolant CAUTION • Do not remove the radiator cap while coolant is hot. When cool, slowly rotate cap to the first stop and allow sufficient time for excess pressure to escape before removing the cap completely.
  • Page 104 5. After draining, reinstall the drain plug. 6. Install the under guard. (When refilling) • Fill with new KUBOTA SUPER UDT fluid up to the upper notch on the dipstick. (See page G-8.) How to check: Wipe dipstick clean with a rag and screw filling plug into filling hole.
  • Page 105 ENGINE RTV1140CPX, WSM Muffler Cover, Muffler, Transmission Rear Guard and Hydraulic Cylinder 1. Remove the stay (1) and muffler cover (2). 2. Remove the muffler (4) and muffler pipe (7). 3. Remove the transmission rear guard (5). 4. Disconnect the quick couplers (6).
  • Page 106 ENGINE RTV1140CPX, WSM Brake Hoses and Cables 1. Disconnect the select cable (1), main shift cable (2) and engine wire (3). 2. Disconnect the speed control pedal cable (4), parking brake cable R.H. (5), brake hose R.H. (6) and differential lock cable (7).

  • Page 107: Separating Rear Axle

    ENGINE RTV1140CPX, WSM Wiring Harness from Engine 1. Disconnect the coolant temperature sensor connector (3). 2. Disconnect the wiring connector from alternator (1). 3. Disconnect the wiring connector from starter motor (2). (1) Alternator (3) Coolant Temperature Sensor (2) Starter Motor...

  • Page 108: Separating Transmission Assembly

    ENGINE RTV1140CPX, WSM (3) Separating Transmission Assembly Dismounting Transmission and Engine One Piece Assembly 1. Remove the unload linkage (1). 2. Set the power train support (6) and remove the mission frame (4) mounting bolt (2) and nut. 3. Lift up the main frame by hoist.
  • Page 109 ENGINE RTV1140CPX, WSM Mission Frame 1. Remove the mission frame (2) from engine and transaxle one piece assembly. (When reassembling) • Tighten the screws (7) of bottom in the first. • When inserting the bushes (9) in mission frame (2), align the tags (8) of bushes with alignment marks (10) on the mission frame (2).

  • Page 110: Separating Engine

    ENGINE RTV1140CPX, WSM (4) Separating Engine Separate the Transmission and Engine One Piece Assembly 1. Remove the engine mounting screw and starter motor (1) mounting screws. 2. Disconnect the oil cooler hoses (2). 3. Disconnect the accelerator wire (3). 4. Separate the engine from transmission assembly.

  • Page 111: Cylinder Head And Valve

    ENGINE RTV1140CPX, WSM (2) Cylinder Head and Valve Cylinder Head Cover 1. Disconnect the breather hose. 2. Remove the head cover nut. 3. Remove the cylinder head cover (1). (When reassembling) • Check to see if the cylinder head cover gasket is not defective.
  • Page 112 ENGINE RTV1140CPX, WSM Nozzle Heat Seal Service Removal Procedure IMPORTANT • Use a plus (phillips head) screw driver (1) that has a diameter which is bigger than the heat seal hole (Approx. 6 mm (1/4 in.)). 1. Drive screw driver (1) lightly into the heat seal hole.

  • Page 113: Cylinder Head/Cylinder Head Gasket

    ENGINE RTV1140CPX, WSM Cylinder Head and Cylinder Head Gasket 1. Loosen the pipe clamps (1), and remove the water return hose (2). 2. Remove the cylinder head screw in the order of "n" to "a" and remove the cylinder head.

  • Page 114: Gear Case And Timing Gears

    ENGINE RTV1140CPX, WSM Valves 1. Remove the valve caps (2). 2. Remove the valve spring collet (3), pushing the valve spring retainer (4) by valve spring replacer (1). 3. Remove the valve spring retainer (4), valve spring (5) and valve stem seal (6).
  • Page 115 ENGINE RTV1140CPX, WSM Fan Drive Pulley 1. Secure the flywheel to keep it from turning. 2. Remove the fan drive pulley screw. 3. Draw out the fan drive pulley with a puller. (When reassembling) • Install the pulley to crankshaft, aligning the mark (1) on them (3-cylinder engine).
  • Page 116 ENGINE RTV1140CPX, WSM Injection Pump 1. Disconnect the start spring (4) on the thrust lever side (5). 2. Align the control rack pin (2) with the notch (1) on the crankcase, and remove the injection pump (3). 3. Remove the injection pump shims.
  • Page 117 ENGINE RTV1140CPX, WSM Cam Gear, Idle Gear 1 and Governor Gear 1. Remove the idle gear 1 (4). 2. Remove the fuel camshaft stopper (6). 3. Draw out the fuel cam gear (1) with fuel camshaft (7). 4. Remove the camshaft stopper bolt.

  • Page 118: Piston And Connecting Rod

    ENGINE RTV1140CPX, WSM (4) Piston and Connecting Rod Connecting Rod 1. Remove the connecting rod cap. (When reassembling) • Align the marks (a) with each other. (Face the marks toward the injection pump.) • Apply engine oil to the connecting rod screws and lightly screw it in by hand, then tighten it to the specified torque.
  • Page 119 ENGINE RTV1140CPX, WSM Piston Ring and Connecting Rod 1. Remove the piston rings using a piston ring tool. 2. Remove the piston pin (7), and separate the connecting rod (6) from the piston (5). (When reassembling) • When installing the ring, assemble the rings so that the manufacturer's mark (12) near the gap faces the top of the piston.

  • Page 120: Crankshaft

    ENGINE RTV1140CPX, WSM (5) Crankshaft Flywheel 1. Remove the input flange (1). 2. Secure the flywheel to keep it from turning, using a flywheel stopper. 3. Remove all flywheel screws (2) and then remove the flywheel (4). (When reassembling) • With No. 1 piston at TDC, align the "1TC" mark (a) on the outer surface of the flywheel horizontally with the alignment mark (b) on the rear end plate.
  • Page 121 ENGINE RTV1140CPX, WSM Crankshaft Assembly 1. Remove the main bearing case screw 2 (1). 2. Pull out the crankshaft assembly. IMPORTANT • Take care to protect crankshaft bearing 1 from scratches, caused by the crank gear, etc.. (Wrap the gear in vinyl tape, etc.)

  • Page 122: Servicing

    ENGINE RTV1140CPX, WSM [4] SERVICING (1) Cylinder Head and Valves Top Clearance 1. Remove the cylinder head. (Do not attempt to remove the cylinder head gasket.) 2. Move the piston up and stick a strip of fuse [1.5 mm dia.
  • Page 123 ENGINE RTV1140CPX, WSM Cylinder Head Flaw 1. Prepare an air spray red check. 2. Clean the surface of the cylinder head with detergent (2). 3. Spray the cylinder head surface with the red permeative liquid (1). Leave it five to ten minutes after spraying.
  • Page 124 ENGINE RTV1140CPX, WSM Replacing Valve Guide (When removing) 1. Press out the used valve guide using a valve guide replacing tool. (Refer to "8. SPECIAL TOOLS" in "G. GENERAL" section.) (When installing) 1. Clean a new valve guide and valve guide bore, and apply engine oil to them.
  • Page 125 ENGINE RTV1140CPX, WSM Correcting Valve and Valve Seat NOTE • Before correcting the valve and seat, check the valve stem and the I.D. of valve guide section, and repair them if necessary. • After correcting the valve seat, be sure to check the valve recessing.
  • Page 126 ENGINE RTV1140CPX, WSM Free Length and Tilt of Valve Spring 1. Measure the free length (B) of valve spring with vernier calipers. If the measurement is less than the allowable limit, replace it. 2. Put the valve spring on a surface plate, place a square on the side of the valve spring 3.

  • Page 127: Timing Gears, Camshaft And Governor Gear

    ENGINE RTV1140CPX, WSM Push Rod Alignment 1. Place the push rod on V blocks. 2. Measure the push rod alignment. 3. If the measurement exceeds the allowable limit, replace the push rod. 0.25 mm Push rod alignment Allowable limit 0.0098 in.
  • Page 128 ENGINE RTV1140CPX, WSM Idle Gear 1 Side Clearance 1. Set a dial indicator with its tip on the idle gear. 2. Measure the side clearance by moving the idle gear from the front and rear. 3. If the measurement exceeds the allowable limit, replace the idle gear collar.
  • Page 129 ENGINE RTV1140CPX, WSM Oil Clearance of Camshaft Journal 1. Measure the camshaft journal O.D. with an outside micrometer. 2. Measure the cylinder block bore I.D. for camshaft with a cylinder gauge, and calculate the oil clearance. 3. If the oil clearance exceeds the allowable limit, replace the camshaft.

  • Page 130: Piston And Connecting Rod

    ENGINE RTV1140CPX, WSM (3) Piston and Connecting Rod Piston Pin Bore I.D. 1. Measure the piston pin bore I.D. in both the horizontal and vertical directions with a cylinder gauge. 2. If the measurement exceeds the allowable limit, replace the piston.
  • Page 131 ENGINE RTV1140CPX, WSM Connecting Rod Alignment NOTE • Since the I.D. of the connecting rod small end bushing is the basis of this check, check bushing for wear beforehand. 1. Install the piston pin into the connecting rod. 2. Install the connecting rod on the connecting rod alignment tool.

  • Page 132: Crankshaft

    ENGINE RTV1140CPX, WSM Clearance between Piston ring and Piston Ring Groove 1. Clean the rings and the ring grooves, and install each ring in its groove. 2. Measure the clearance between the ring and the groove with a feeler gauge or depth gauge.
  • Page 133 ENGINE RTV1140CPX, WSM Crankshaft Alignment 1. Support the crankshaft with V blocks on the surface plate at both end journals. 2. Set a dial indicator with its tip on the intermediate journal. 3. Measure the crankshaft alignment. 4. If the measurement exceeds the allowable limit, replace the crankshaft.
  • Page 134 ENGINE RTV1140CPX, WSM Oil Clearance between Crankshaft Journal and Crankshaft Bearing 1 1. Measure the O.D. of the crankshaft front journal with an outside micrometer. 2. Measure the I.D. of the crankshaft bearing 1 with an inside micrometer, and calculate the oil clearance.
  • Page 135 ENGINE RTV1140CPX, WSM Oil Clearance between Crankshaft Journal and Crankshaft Bearing 2 (Crankshaft Bearing 3) 1. Put a strip of plastigage on the center of the journal. 2. Install the bearing case and tighten the bearing case screws 1 to the specified torque, and remove the bearing case again.

  • Page 136: Cylinder

    ENGINE RTV1140CPX, WSM Replacing Crankshaft Sleeve 1. Remove the used crankshaft sleeve. 2. Set the sleeve guide (2) to the crankshaft. 3. Heat a new sleeve to a temperature between 150 and 200 °C (302 and 392 °F), and fix the sleeve to the crankshaft as shown in figure.

  • Page 137: Oil Pump

    ENGINE RTV1140CPX, WSM Correcting Cylinder 1. When the cylinder is worn beyond the allowable limit, bore and hone it to the specified dimension. 78.500 to 78.519 mm Factory specification 3.0906 to 3.0912 in. Oversized cylinder liner I.D. 78.65 mm Allowable limit 3.096 in.
  • Page 138 TRANSMISSION KiSC issued 05, 2014 A...
  • Page 139 MECHANISM CONTENTS 1. STRUCTURE..........................2-M1 2. POWER TRAIN .......................... 2-M2 [1] HYDROSTATIC TRANSMISSION (HST) ................2-M3 (1) Structure ......................... 2-M3 (2) Oil Flow........................... 2-M5 (3) Function of Components ....................2-M6 [2] RANGE GEAR SHIFT SECTION AND FRONT WHEEL DRIVE SECTION....... 2-M23 KiSC issued 05, 2014 A...

  • Page 140: Structure

    TRANSMISSION RTV1140CPX, WSM 1. STRUCTURE (1) Input Shaft Section (2) Hydrostatic Transmission (3) Range Shift Gear Section (4) Front Wheel Drive Section Section 9Y1210293TRM0001US0 2-M1 KiSC issued 05, 2014 A...

  • Page 141: Power Train

    TRANSMISSION RTV1140CPX, WSM 2. POWER TRAIN The transmission of this model consists of a series of gears and shafts as shown in previous page. The traveling system is chiefly composed of hydrostatic transmission section, range gear shift section and front wheel drive section.

  • Page 142: Hydrostatic Transmission (Hst)

    TRANSMISSION RTV1140CPX, WSM [1] HYDROSTATIC TRANSMISSION (HST) (1) Structure The RTV1140CPX has its HST built into the transmission case and incorporates a hydraulically operated servomechanism. servomechanism controls the pedal operation hydraulically. As a result a smoother pedal operation can be achieved. The...
  • Page 143 TRANSMISSION RTV1140CPX, WSM (1) Input Shaft (Pump Shaft) (9) Cylinder Block (Pump) (16) Piston (23) Cradle Bearing (2) Feedback Lever (10) Port Block Cover (17) Cylinder Block (Assist Motor) (24) Regulator Spool (3) Regulator Shaft (11) Suction Oil Filter Cartridge...

  • Page 144: Oil Flow

    TRANSMISSION RTV1140CPX, WSM (2) Oil Flow (1) HST Assembly (7) Check and High Pressure (11) Cylinder Block (15) Cylinder Block (HST Pump) (2) Control Lever (Pedal) Relief Valve (Stationary Motor) (16) Tank (3) Servo Regulator Assembly (8) Control Piston (12) Charge Relief Valve...

  • Page 145: Function Of Components

    TRANSMISSION RTV1140CPX, WSM (3) Function of Components [A] Servomechanism (1) Regulator Valve Assembly (4) Pin B (Fixed with Spool) (8) Guide (for Variable (10) Servo Piston (2) Regulator Spool (5) Feedback Lever Swashplate) (11) Servo Spring (3) Pin A (6) Regulator Shaft...
  • Page 146 TRANSMISSION RTV1140CPX, WSM [B] Regulator and Servo Piston Operation (A) Control Lever at Neutral (1) Servo Adjusting Screw (2) Regulator Valve Assembly (3) Regulator Spool (4) Pin B (Fixed with Spool) (5) Pin A (Fixed with Regulator Shaft) (6) Control Lever...
  • Page 147 TRANSMISSION RTV1140CPX, WSM (B) Control Lever Activated (First Step: Moving the Control Lever) (1) Servo Adjusting Screw (2) Regulator Valve Assembly (3) Regulator Spool (4) Pin B (Fixed with Spool) (5) Pin A (Fixed with Regulator Shaft) (6) Control Lever...
  • Page 148 TRANSMISSION RTV1140CPX, WSM (C) Control Lever Activated (with Control Lever at Desired Position) (1) Servo Adjusting Screw (2) Regulator Valve Assembly (3) Regulator Spool (4) Pin B (Fixed with Spool) (5) Pin A (Fixed with Regulator Shaft) (6) Control Lever...
  • Page 149 TRANSMISSION RTV1140CPX, WSM (D) Control Lever Deactivated (1) Servo Adjusting Screw (2) Regulator Valve Assembly (3) Regulator Spool (4) Pin B (Fixed with Spool) (5) Pin A (Fixed with Regulator Shaft) (6) Control Lever (7) Feedback Lever (8) Servo Piston...
  • Page 150 TRANSMISSION RTV1140CPX, WSM [C] HST Oil Flow (A) Neutral (1) Pedal (2) Regulator Valve Assembly (3) Regulator Spool (4) Servo Piston (5) Cylinder Block (6) HST Housing (7) Control Piston (8) Variable Swashplate (Assist Motor) (9) Cylinder Block (Assist Motor)
  • Page 151 TRANSMISSION RTV1140CPX, WSM (B) Pedal Depressed Halfway and Under Light Load (1) Pedal (2) Regulator Valve Assembly (3) Regulator Spool (4) Servo Piston (5) Cylinder Block (6) HST Housing (7) Control Piston (8) Variable Swashplate (Assist Motor) (9) Cylinder Block (Assist Motor)
  • Page 152 TRANSMISSION RTV1140CPX, WSM (C) Pedal Depressed Fully and Under Light Load (1) Pedal (2) Regulator Valve Assembly (3) Regulator Spool (4) Servo Piston (5) Cylinder Block (6) HST Housing (7) Control Piston (8) Variable Swashplate (Assist Motor) (9) Cylinder Block (Assist Motor)
  • Page 153 TRANSMISSION RTV1140CPX, WSM (D) Pedal Depressed Fully, Under Light Load and Assist Motor Started Up to Maximum Capacity Level (1) Pedal (2) Regulator Valve Assembly (3) Regulator Spool (4) Servo Piston (5) Cylinder Block (6) HST Housing (7) Control Piston...
  • Page 154 TRANSMISSION RTV1140CPX, WSM (E) Pedal Depressed Fully, Under Heavy Load and Input Horsepower Control (1) Pedal (2) Regulator Valve Assembly (3) Regulator Spool (4) Servo Piston (5) Cylinder Block (6) HST Housing (7) Control Piston (8) Variable Swashplate (Assist Motor)
  • Page 155 TRANSMISSION RTV1140CPX, WSM (F) Dynamic Brake Operating (1) Pedal (2) Regulator Valve Assembly (3) Regulator Spool (4) Servo Piston (5) Cylinder Block (6) HST Housing (7) Control Piston (8) Variable Swashplate (Assist Motor) (9) Cylinder Block (Assist Motor) (10) Check and High Pressure...
  • Page 156 TRANSMISSION RTV1140CPX, WSM (G) After Dynamic Brake Operated, Brake a Unload Circuit Operating (1) Pedal (2) Regulator Valve Assembly (3) Regulator Spool (4) Servo Piston (5) Cylinder Block (6) HST Housing (7) Control Piston (8) Variable Swashplate (Assist Motor) (9) Cylinder Block (Assist Motor)
  • Page 157 TRANSMISSION RTV1140CPX, WSM [D] Charge Relief Valve The charge pump feeds oil to the HST main circuit (closed circuit) and the regulator assembly. Oil may leak out of the HST main circuit (in the HST housing) depending on the pressure, oil temperature and other factors.
  • Page 158 TRANSMISSION RTV1140CPX, WSM [E] Check and High Pressure Relief Valve The cartridge-type check and high-pressure relief valve consists of pressure poppet (2), check valve seat (1), relief valve spring (3), spring guide (4) and check valve spring (5). The spring guide (4) is provided with an anti-rotation, which keeps the threads tight after a pressure has been set.
  • Page 159 TRANSMISSION RTV1140CPX, WSM [F] Anti-cavitation Valve The anti-cavitation valve is normally closed. When the oil level in the charging circuit becomes low, the anti-cavitation valve opens and the necessary amount of oil is provided to the travel circuit from the HST housing due to the pressure difference between HST housing case and travel circuit.
  • Page 160 TRANSMISSION RTV1140CPX, WSM [H] Control Linkage (A) For HST (1) HST Control Lever (2) Damper (3) HST Control Rod (4) Neutral Holder Arm (5) Ball Bearing (6) Speed Control Pedal Cable (7) Engine Accelerator Wire (8) Neutral Holder (9) Neutral Spring The speed control pedal and neutral holder arm (4) are connected with speed control pedal cable (6).
  • Page 161 TRANSMISSION RTV1140CPX, WSM (B) Unload Valve Linkage When starting from a stopped position on a slope (the brake pedal (1) is not depressed), due to residual pressure in the HST circuit, shifting to the neutral position cannot always be fully achieved.

  • Page 162: Range Gear Shift Section And Front Wheel Drive Section

    TRANSMISSION RTV1140CPX, WSM [2] RANGE GEAR SHIFT SECTION AND FRONT WHEEL DRIVE SECTION Reverse Low Speed M: Middle Speed High Speed 4 Wheel Drive From HST Output Shaft  Range Gear Shift Section First, power is transmitted to the HST at the back of the transmission case. The HST power is then taken out to the front and transmitted further to the range shift section.
  • Page 163 SERVICING CONTENTS 1. TROUBLESHOOTING.........................2-S1 2. SERVICING SPECIFICATIONS ....................2-S4 3. TIGHTENING TORQUES......................2-S5 4. CHECKING, DISASSEMBLING AND SERVICING ..............2-S6 [1] CHECKING AND ADJUSTING....................2-S6 [2] PREPARATION ........................2-S17 (1) Removing Outer Components ..................2-S17 (2) Separating Rear Axle ....................2-S23 (3) Separating Transmission Assembly ................2-S24 (4) Separating Engine and Transmission................2-S26 (5) Separating Front Case and Transmission Case............2-S26 [3] DISASSEMBLING AND ASSEMBLING ................2-S27 (1) Front Case........................2-S27...

  • Page 164: Troubleshooting

    TRANSMISSION RTV1140CPX, WSM 1. TROUBLESHOOTING HYDROSTATIC TRANSMISSION Reference Symptom Probable Cause Solution Page System Will Not Oil level is low Check oil level or fill Operate in Either oil to proper level Direction Control linkage or cable defective Repair linkage...
  • Page 165 TRANSMISSION RTV1140CPX, WSM Reference Symptom Probable Cause Solution Page Transmission Oil Low transmission oil level Fill transmission oil Over Heats level up to proper level Radiator net clogged Clean radiator net – Excessive machine load Reduce machine load – Improper charge pressure 1.
  • Page 166 TRANSMISSION RTV1140CPX, WSM DIFFERENTIAL GEAR SECTION Reference Symptom Probable Cause Solution Page Excessive or Unusual Improper backlash between spiral bevel pinion Adjust 2-S48 Nose at All Time and bevel gear Improper backlash between differential pinion Adjust 2-S44 and differential side gear...

  • Page 167: Servicing Specifications

    TRANSMISSION RTV1140CPX, WSM 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Check and High Pressure Relief Valve Setting Pressure 22.6 to 26.5 MPa – Condition Forward 231 to 270 kgf/cm • Engine Speed 3280 to 3840 psi −1 3000 min...

  • Page 168: Tightening Torques

    TRANSMISSION RTV1140CPX, WSM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-10.) Item N·m kgf·m lbf·ft Drain plug 58 to 67 5.9 to 6.9...

  • Page 169: Checking, Disassembling And Servicing

    TRANSMISSION RTV1140CPX, WSM 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Checking High Pressure Relief Valve Pressure (Forward Side) CAUTION • If it is necessary to run engine in an enclosed area, use a gas tight exhaust pipe extension to remove the fumes.
  • Page 170 TRANSMISSION RTV1140CPX, WSM Checking High Pressure Relief Valve Pressure (Reverse Side) CAUTION • If it is necessary to run engine in an enclosed area, use a gas tight exhaust pipe extension to remove the fumes. • Always try to work in a well-ventilated area.
  • Page 171 TRANSMISSION RTV1140CPX, WSM (Continued) NOTE • High pressure gauge is 29.4 MPa (300 kgf/cm , 4267 psi) full scale. (When reassembling) • Take care not to damage O-ring on plug. Condition • Engine speed −1 3000 min (rpm) • Oil temperature 45 to 55 °C...
  • Page 172 TRANSMISSION RTV1140CPX, WSM Checking Charge Relief Pressure CAUTION • If it is necessary to run engine in an enclosed area, use a gas tight exhaust pipe extension to remove the fumes. • Always try to work in a well-ventilated area.
  • Page 173 TRANSMISSION RTV1140CPX, WSM Checking Neutral CAUTION • Park the machine on a hard and level surface. • If it is necessary to run engine in an enclosed area, use a gas tight exhaust pipe extension to remove the fumes. • Always try to work in a well-ventilated area.
  • Page 174 TRANSMISSION RTV1140CPX, WSM (Continued) IMPORTANT • When the neutral position of the machine is checked, it is advisable to divide the checking procedure as follows: First check the HST unit alone, and then connect the HST unit to the link for checking 1.
  • Page 175 TRANSMISSION RTV1140CPX, WSM Checking Travelling Speed CAUTION • Park the machine on a hard and level surface. • If it is necessary to run engine in an enclosed area, use a gas tight exhaust pipe extension to remove the fumes.
  • Page 176 TRANSMISSION RTV1140CPX, WSM Checking Speed Control Pedal Stroke (Adjustment of the speed control pedal cable) CAUTION • When checking, park the machine on flat ground, and apply the parking brake. • Work by two people when you checking and adjusting speed control pedal stroke.
  • Page 177 TRANSMISSION RTV1140CPX, WSM Checking Main Shift Lever Position (Adjusting of the shift cable length and the select cable length) CAUTION • When checking, park the machine on flat ground, and apply the parking brake. • Work by two people when you checking and adjusting main shift lever position.
  • Page 178 TRANSMISSION RTV1140CPX, WSM Checking Four Wheel Drive Lever Position (Adjustment of the 4WD shaft cable length) CAUTION • When checking, park the machine on flat ground, and apply the parking brake. • Work by two people when you checking and adjusting four wheel drive lever position.
  • Page 179 TRANSMISSION RTV1140CPX, WSM Checking VHT Pressure Release Cable (Unload Cable) CAUTION • When checking, park the vehicle on flat ground. • Work by two people when adjusting. 1. Loosen the lock nut (2) of the cable outer section at the front side, and remove the unload cable (1).

  • Page 180: Preparation

    TRANSMISSION RTV1140CPX, WSM [2] PREPARATION (1) Removing Outer Components Battery CAUTION • When disconnecting the battery cables, disconnect the negative cable from the battery first. When connecting, connect the positive cable to the battery first. 1. Set the seat to 1 row.
  • Page 181 3. After draining, reinstall the drain plug (3). (When refilling) • Fill with the new KUBOTA SUPER UDT fluid up to the upper notch on the dipstick (2). (Refer "LUBRICANTS, FUEL COOLANT"...
  • Page 182 5. After draining, reinstall the drain plug. 6. Install the under guard. (When refilling) • Fill with new KUBOTA SUPER UDT fluid up to the upper notch on the dipstick. (See page G-8.) How to check: Wipe dipstick clean with a rag and screw filling plug into filling hole.
  • Page 183 TRANSMISSION RTV1140CPX, WSM Draining Coolant CAUTION • Do not remove the radiator cap while coolant is hot. When cool, slowly rotate cap to the first stop and allow sufficient time for excess pressure to escape before removing the cap completely.
  • Page 184 TRANSMISSION RTV1140CPX, WSM Air Cleaner 1. Remove the air cleaner body (2) and intake hose (1) together. (1) Intake Hose (2) Air Cleaner Body 9Y1210293ENS0028US0 Rear Wheel 1. Remove the rear fenders (1). 2. Remove the rear wheels (2). (When reassembling) 75 to 90 N·m...
  • Page 185 TRANSMISSION RTV1140CPX, WSM Brake Hoses and Cables 1. Disconnect the select cable (1), main shift cable (2) and engine wire (3). 2. Disconnect the speed control pedal cable (4), parking brake cable R.H. (5), brake hose R.H. (6) and differential lock cable (7).

  • Page 186: Separating Rear Axle

    TRANSMISSION RTV1140CPX, WSM Wiring Harness from Engine 1. Disconnect the coolant temperature sensor connector (3). 2. Disconnect the wiring connector from alternator (1). 3. Disconnect the wiring connector from starter motor (2). (1) Alternator (3) Coolant Temperature Sensor (2) Starter Motor...

  • Page 187: Separating Transmission Assembly

    TRANSMISSION RTV1140CPX, WSM (3) Separating Transmission Assembly Dismounting Transmission and Engine One Piece Assembly 1. Remove the unload linkage (1). 2. Set the power train support (6) and remove the mission frame (4) mounting bolt (2) and nut. 3. Lift up the main frame by hoist.
  • Page 188 TRANSMISSION RTV1140CPX, WSM Mission Frame 1. Remove the mission frame (2) from engine and transaxle one piece assembly. (When reassembling) • Tighten the screws (7) of bottom in the first. • When inserting the bushes (9) in mission frame (2), align the tags (8) of bushes with alignment marks (10) on the mission frame (2).

  • Page 189: Separating Engine And Transmission

    TRANSMISSION RTV1140CPX, WSM (4) Separating Engine and Transmission Separate the Transmission and Engine One Piece Assembly 1. Remove the engine mounting screw and starter motor (1) mounting screws. 2. Disconnect the oil cooler hoses (2). 3. Disconnect the accelerator wire (3).

  • Page 190: Disassembling And Assembling

    TRANSMISSION RTV1140CPX, WSM Separate the Front Case and Transmission Case 1. Remove the shift cover (1). 2. Separate the front case (2) and transmission case (3). (When reassembling) • Replace the transmission case gasket with new one. • Replace the shift cover gasket with new one.
  • Page 191 TRANSMISSION RTV1140CPX, WSM Detent Ball, Interlocking Ball and Back Idle Gear Shaft 1. Remove the stopper bolt (3) from bearing holder (1). 2. Remove the three interlock balls (6) with a magnet. 3. Tap out the roll pins (2) and remove the springs (8) and detent balls (7).
  • Page 192 TRANSMISSION RTV1140CPX, WSM (Continued) (When reassembling) • Remove the bearing (1) on 11T-12T gear shaft (2). • Install the bearing to bearing holder (3), first. • Install the back idle gear and shaft (4), then tighten the nut with specified torque.
  • Page 193 TRANSMISSION RTV1140CPX, WSM Shaft Assemblies 1. Remove the 4WD idle shaft assembly (1). 2. Draw out the 6T spiral bevel pinion shaft assembly (3) and 11T-12T gear shaft assembly (2) with shift fork. 3. Loosen the lock bolt for 4WD shift arm (4).

  • Page 194: Transmission Case

    TRANSMISSION RTV1140CPX, WSM (2) Transmission Case Propeller Shaft Assembly 1. Remove the oil filter cartridge (2), and remove the oil cooler (1). 2. Remove the bearing cover (4) mounting screw, and remove the propeller shaft assembly (3). (When reassembling) 18 to 20 N·m...
  • Page 195 TRANSMISSION RTV1140CPX, WSM Differential Gear Assembly 1. Remove the differential support cover (1), noting the number of left shims (2). 2. Take out the differential gear assembly (3), noting the number of right shims. (When reassembling) • Use same number of shims as before disassembling.
  • Page 196 TRANSMISSION RTV1140CPX, WSM Piston Case 1. Remove the piston case (1), return piston (2), springs (4) and stopper rod (3). (When reassembling) • Take care not to damage O-ring on the piston case. 69 to 78 N·m Tightening torque Piston case 7.0 to 8.0 kgf·m...
  • Page 197 TRANSMISSION RTV1140CPX, WSM Motor Case 1. Stand up the transmission case (2). 2. Loosen the suction hose clamps (4). 3. Remove the oil filter bracket (6) with suction hose (5). 4. Remove the suction pipe (3). 5. Remove the motor case (1).
  • Page 198 TRANSMISSION RTV1140CPX, WSM Port Block Cover 1. Remove the port block cover mounting screw. 2. Pull and remove the port block cover (1) from transmission case (2). (When reassembling) • Replace the port block cover gasket (5) with new one.
  • Page 199 TRANSMISSION RTV1140CPX, WSM Cylinder Block (Motor) Assembly, Motor Shaft Swashplate and Pump Shaft 1. Tap out the motor shaft (2) with a plastic hammer slightly to slide out it with motor cylinder block with piston (3) to the rear side.
  • Page 200 TRANSMISSION RTV1140CPX, WSM Charge Relief Valve and Check and High Pressure Relief Valve 1. Remove the shim (7), spring (6) and charge relief valve poppet (5). 2. Remove the hex. head socket plugs (1) and remove the springs (2), check and high pressure valve assembly (3), (4).
  • Page 201 TRANSMISSION RTV1140CPX, WSM Servo Regulator Assembly 1. Remove the servo piston cover (2). 2. Remove the regulator mounting hex. head screw. 3. Remove the servo regulator assembly (1). (When reassembling) • Replace the gasket with new ones. • Install the servo regulator assembly to the housing, align the feedback lever (3) of regulator and groove of servo piston (4).

  • Page 202: Hydrostatic Transmission

    TRANSMISSION RTV1140CPX, WSM (3) Hydrostatic Transmission Rear Guard and Oil Filter Bracket 1. Remove the rear guard (2). 2. Disconnect the quick couplers (1). 3. Remove the filter bracket (3) with oil filter cartridge and suction hoses. (When reassembling) 18 to 20 N·m...
  • Page 203 TRANSMISSION RTV1140CPX, WSM Piston Case and Motor Case 1. Place oil pan underneath the motor case (4). 2. Loosen the piston case (1) with return piston, springs and stopper rod. 3. Remove the motor case (4) with variable swashplate (5).

  • Page 204: Servicing

    TRANSMISSION RTV1140CPX, WSM Port Block Cover 1. Remove the port block cover (1) mounting screw. 2. Remove the port block cover (1) carefully and slowly. Leave the cylinder blocks (2). (When reassembling) • Replace the port block cover gasket (5) with new one.
  • Page 205 TRANSMISSION RTV1140CPX, WSM HST Neutral Linkage 1. Check that the linkage move smoothly. 2. If the linkage movement is not smooth, if the inside bearing worn, replace the bearing. 9Y1210293TRS0040US0 Mission Frame and Rubber Bush 1. Visually check the mission frame (1) and rubber bushes (2).
  • Page 206 TRANSMISSION RTV1140CPX, WSM 6T Spiral Bevel Pinion Shaft, Gear and Needle Bearing 1. Remove the 33T gear by using the gear puller. 2. Check the needle bearing for abrasion, color change or other damage. 3. If there is any doubt as to the condition of a needle bearing, replace it.
  • Page 207 TRANSMISSION RTV1140CPX, WSM Back Idle Gear, Shaft and Needle Bearing 1. Check the needle bearing for abrasion, color change, or other damage. 2. If there is any doubt as to the condition of a needle bearing, replace it. 3. Check both the shaft and gear bearing surface.
  • Page 208 TRANSMISSION RTV1140CPX, WSM Clearance between Differential Case and Differential Side Gear 1. Measure the differential side gear boss O.D. with an outside micrometer. 2. Measure the differential case I.D. with a cylinder gauge and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace faulty parts.
  • Page 209 TRANSMISSION RTV1140CPX, WSM Tooth Contact between 6T Spiral Bevel Pinion Shaft and 37T Spiral Bevel Gear • Use the transmission gasket (1) of the same thickness as the origin first. • Use same number of shims as before disassembling. 1. Apply red lead (or prussian blue) lightly on the teeth of spiral bevel pinion shaft.
  • Page 210 TRANSMISSION RTV1140CPX, WSM (Continued) • More than 35 % red lead contact area on the gear tooth surface. The center of tooth contact at 1/3 of the entire width from the small end. • Replace the transmission gasket (1) with thinner one to move the spiral bevel pinion shaft backward.
  • Page 211 TRANSMISSION RTV1140CPX, WSM Backlash between 6T Spiral Bevel Pinion Shaft and 37T Spiral Bevel Gear 1. Put the solder (0.5 mm (0.020 in.) thickness) (1) on the position where the tooth proper contact of spiral bevel pinon shaft. 2. Reassemble the front case and transmission case. In this time, set the differential lock shiftier to lock position.
  • Page 212 TRANSMISSION RTV1140CPX, WSM Pump Shaft, Motor Shaft and Bearings 1. Check bearings for abrasion, color change, or other damage. 2. If there is any doubt as to the condition of a bearing, replace it. 3. Check the shaft surface for abrasion, color change or other damage.
  • Page 213 Readjustment of Relief Valve (When the HST does not work due to its loose hexagon socket head screw) IMPORTANT • The KUBOTA does not recommend the readjustment of relief valve. And KUBOTA will recommend the exhaustion with genuine parts. • As the HST may be damaged if the pressure is set to higher by mistake, be careful when adjusting it.
  • Page 214 TRANSMISSION RTV1140CPX, WSM Cylinder Block Face and Valve Plate 1. Check the polished face (1) of cylinder block for scoring. 2. If scored, replace cylinder block assembly. 3. Check the spring (2) for breakage. 4. If broken, replace cylinder block assembly.

  • Page 215: Rear Axle

    REAR AXLE KiSC issued 05, 2014 A...
  • Page 216 MECHANISM CONTENTS 1. STRUCTURE..........................3-M1 KiSC issued 05, 2014 A...
  • Page 217 REAR AXLE RTV1140CPX, WSM 1. STRUCTURE (1) Shock Absorber (3) Rear Axle Bracket (5) Rear Axle (6) Propeller Shaft (2) Leaf Spring (4) Ball Bearing The leaf spring (2) type is adopted for rear suspension. And the shock absorber (1) is a design to consider riding comfort etc. by using the type which uses the gas together with oil.
  • Page 218 SERVICING CONTENTS 1. TROUBLESHOOTING.........................3-S1 2. TIGHTENING TORQUES......................3-S2 3. CHECKING, DISASSEMBLING AND SERVICING ..............3-S3 [1] CHECKING..........................3-S3 [2] PREPARATION ........................3-S3 (1) Rear Axle Bracket Assembly ...................3-S3 (2) Leaf Spring ........................3-S5 [3] DISASSEMBLING AND ASSEMBLING ................3-S7 (1) Rear Axle Bracket Assembly ...................3-S7 [4] SERVICING ...........................3-S8 KiSC issued 05, 2014 A...

  • Page 219: Troubleshooting

    REAR AXLE RTV1140CPX, WSM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Noise when Start Universal joint bearing worn (propeller shaft) Replace 3-S8 Noise while Forward Universal joint bearing worn (propeller shaft) Replace 3-S8 and Reverse Noise Bearings damaged or broken...

  • Page 220: Tightening Torques

    REAR AXLE RTV1140CPX, WSM 2. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-10.) Item N·m kgf·m lbf·ft Rear wheel mounting screw 75 to 90 7.6 to 9.2...

  • Page 221: Checking, Disassembling And Servicing

    REAR AXLE RTV1140CPX, WSM 3. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING Checking Shock Absorber 1. Visually check the shock absorber (1) for breaks or distortion. 2. If the shock absorber is damaged in any way, replace it. 3. Check for oil leakage at the shock absorber.
  • Page 222 REAR AXLE RTV1140CPX, WSM Rear Wheel 1. Remove the cotter pin (1), and loosen the slotted nut (2) for drive shaft. 2. Remove rear wheels (3). (When reassembling) • After tightening the slotted nut (2) with specified torque, install a cotter pin (1) as shown in the figure.

  • Page 223: Leaf Spring

    REAR AXLE RTV1140CPX, WSM (2) Leaf Spring Leaf Spring 1. Place the stand under the frame. 2. Remove the rear wheel (1) and support the rear axle bracket with jack. 3. Loosen the lock nut (3) and rear axle bracket flange nut (4).
  • Page 224 REAR AXLE RTV1140CPX, WSM Rear Shock Absorber 1. Remove the shock absorber (1). (When reassembling) • Tighten the shock absorber mounting bolt and nut with specified torque after setting up the wheel and unloading the machine on ground. 77.4 to 90.2 N·m Shock absorber mounting 7.90 to 9.19 kgf·m...

  • Page 225: Disassembling And Assembling

    REAR AXLE RTV1140CPX, WSM [3] DISASSEMBLING AND ASSEMBLING (1) Rear Axle Bracket Assembly Rear Axle and Propeller Shaft 1. Remove the slotted nut (2) and draw out the rear axle (1). 2. Tap the outside of the propeller shaft (3) and remove the propeller shaft to the inside "a".

  • Page 226: Servicing

    REAR AXLE RTV1140CPX, WSM [4] SERVICING Checking Oil Seal 1. Visually check the oil seal. 2. If the lips are misshapen, discolored, hardened, or been otherwise damaged, replace it. 9Y1210293RAS0009US0 Checking Bearing 1. Check the bearing seal for tears or leakage.
  • Page 227 BRAKES KiSC issued 05, 2014 A...
  • Page 228 MECHANISM CONTENTS 1. GENERAL OUTLINE ........................4-M1 2. KNUCKLE (FRONT BRAKE)...................... 4-M2 3. REAR BRAKE..........................4-M3 4. MASTER CYLINDER........................4-M4 5. BRAKE OIL..........................4-M5 6. PARKING BRAKE ........................4-M6 KiSC issued 05, 2014 A...

  • Page 229: General Outline

    BRAKES RTV1140CPX, WSM 1. GENERAL OUTLINE (1) Brake Pipe (4) Brake Piston (6) Parking Brake Lever (8) Brake Cylinder (2) Brake Hose (5) Brake Pedal (7) Brake Cam Lever (9) Master Cylinder (3) Parking Brake Cable Description of the brake system with an illustration with all its component parts in place.

  • Page 230: Knuckle (Front Brake)

    BRAKES RTV1140CPX, WSM 2. KNUCKLE (FRONT BRAKE) Basically, the brake body is similar to that of the mechanical wet disc brake. It is designed to brake when the brake disc (10) rotating together with the front axle (1) is pressed.

  • Page 231: Rear Brake

    BRAKES RTV1140CPX, WSM 3. REAR BRAKE (1) Brake Shaft (Propeller Shaft) (4) Friction Plate (7) Cam Plate (Actuator) (10) Bypass Valve (2) Brake Cam Lever (5) Brake Disc (8) Brake Cylinder (11) Bypass Link 1 (3) Differential Support Cover (6) Steel Ball...

  • Page 232: Master Cylinder

    There are several different fluid pressure generating mechanisms. Kubota has picked up the tandem type cylinder out of them. Even if a pipe has got cracked and the front or rear set of wheels have failed to get braked, this mechanism can apply the brakes on the other set of wheels.

  • Page 233: Brake Oil

    Brake Fluid Standard) used on automotives and motorcycles. When keeping in mind that the UDT oil used for Kubota tractors so far cannot be applied as the brake oil. If a coated surface gets stained with the brake oil, the paint becomes degraded. Immediately wipe off the oil just in case.

  • Page 234: Parking Brake

    BRAKES RTV1140CPX, WSM 6. PARKING BRAKE (1) Parking Brake Lever (3) Mechanical Equalizer (4) Parking Brake Cable (5) Brake Cam Lever (2) Plate The parking brake is mechanical type which is connected to the brake cam lever (5) by the parking brake cables (4).
  • Page 235 SERVICING CONTENTS 1. TROUBLESHOOTING.........................4-S1 2. SERVICING SPECIFICATIONS ....................4-S2 [1] TRAVELING BRAKE ......................4-S2 [2] PARKING BRAKE .........................4-S2 3. TIGHTENING TORQUES......................4-S3 4. CHECKING, DISASSEMBLING AND SERVICING ..............4-S4 [1] CHECKING AND ADJUSTING....................4-S4 [2] DISASSEMBLING AND ASSEMBLING ................4-S8 (1) Front Brake........................4-S8 (2) Rear Brake ........................4-S13 (3) Master Cylinder Assembly.....................4-S15 [3] SERVICING .........................4-S16 (1) Front Brake........................4-S16...

  • Page 236: Troubleshooting

    BRAKES RTV1140CPX, WSM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Poor Braking Force Brake pedal travel excessive Adjust 4-S4 Brake disc worn Replace 4-S11, 4-S13 Brake fluid insufficient or improper Replenish or change 4-S4 with specified oil Brake fluid leakage from brake pipes, bleeder,...

  • Page 237: Servicing Specifications

    BRAKES RTV1140CPX, WSM 2. SERVICING SPECIFICATIONS [1] TRAVELING BRAKE Item Factory Specification Allowable Limit Brake Pedal Travel 7 to 14 mm – 0.28 to 0.55 in. Brake Disc Thickness 3.30 to 3.50 mm 3.00 mm 0.130 to 0.138 in. 0.118 in.

  • Page 238: Tightening Torques

    BRAKES RTV1140CPX, WSM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-10.) Item N·m kgf·m lbf·ft Front axle slotted nut 15.3 Rear wheel mounting screw 75 to 90 7.6 to 9.2...

  • Page 239: Checking, Disassembling And Servicing

    • Never operate the vehicle, if the brake fluid is below the "MIN" mark. • Use only KUBOTA DOT3 GENUINE BRAKE FLUID from a sealed container. Using other type of oil ruins synthetic resin or rubber installed in brake system components, and may cause brake failure.

  • Page 240: Brake Line Air Bleeding

    BRAKES RTV1140CPX, WSM Brake Line Air Bleeding CAUTION • Use only DOT-3 brake fluid from a sealed container. Conforms to motor vehicle safety standard No. 116. Using other type of ail ruins synthetic resin or rubber installed in brake system components, and may cause brake failure.
  • Page 241 BRAKES RTV1140CPX, WSM Parking Brake Lever Free Play 1. Release the parking brake. 2. Loosen the lock nut, and adjust the cable wire length. 3. Tighten the lock nut (2), and check the free play. Proper parking brake Factory specification...
  • Page 242 BRAKES RTV1140CPX, WSM Checking Parking Brake Lever (Adjustment of the Parking Brake Cable) CAUTION • When checking, park the machine on flat ground. • Work by two people when you measure pressure. 1. Remove the cover (1). 2. Adjust the length of the parking each brake cable (2) outer...

  • Page 243: Disassembling And Assembling

    BRAKES RTV1140CPX, WSM [2] DISASSEMBLING AND ASSEMBLING (1) Front Brake Brake Fluid CAUTION • Use only DOT-3 brake fluid from a sealed container. Conforms to motor vehicle safety standard No. 116. Using other type of ail ruins synthetic resin or rubber installed in brake system components, and may cause brake failure.
  • Page 244 BRAKES RTV1140CPX, WSM Front Wheel and Front Axle Nut 1. Remove the cotter pin and just loosen the slotted nut (1) for drive shaft. 2. Loosen the front wheel mounting screw. (When reassembling) • After tightening the this slotted nut to specified tightening torques, install a cotter pin as shown figure left.
  • Page 245 BRAKES RTV1140CPX, WSM (Continued) (When reassembling) • When installing the strut to knuckle case, set the wedge to decide the position of strut (11) to the slit of the knuckle case assembly (12). • When inserting the cotter pin, if the slots in the nut do not align...
  • Page 246 BRAKES RTV1140CPX, WSM Brake Piston, Brake Disc and Friction Plate IMPORTANT • It is recommended to replace the brake seal with a new one every four years. • Therefore, do not remove the piston unnecessarily from the knuckle case. • If the piston should be removed, replace the seal ring with a new one.
  • Page 247 BRAKES RTV1140CPX, WSM (Continued) (When reassembling) • Refer to the front page. (4) Knuckle Case (10) Brake Seal 4 (7) Piston (11) Brake Seal 3 (8) Brake Seal 1 (12) Alignment Mark (9) Brake Seal 2 9Y1210293BRS0012US0 4-S12 KiSC issued 05, 2014 A...

  • Page 248: Rear Brake

    BRAKES RTV1140CPX, WSM (2) Rear Brake Separating Differential Support Cover 1. Refer to "Transmission" section. (See page 2-S31.) 9Y1210293BRS0013US0 Bearing Support, Brake Disk and Friction Plate 1. Remove the internal snap ring (3). 2. Remove the bearing holder (1). 3. Remove the brake disk and friction plate.
  • Page 249 BRAKES RTV1140CPX, WSM Actuator, Ball and Cam Lever 1. Remove the actuator (1) and balls (2). 2. Remove the external snap ring (3) and remove the cam lever (4). (When reassembling) • Take care not to damage the O-ring. (1) Actuator...

  • Page 250: Master Cylinder Assembly

    BRAKES RTV1140CPX, WSM (3) Master Cylinder Assembly Master Cylinder Assembly CAUTION • Use only DOT-3 brake fluid from a sealed container. Conform to motor vehicle safety standard No. 116. Using other type of ail ruins synthetic resin or rubber installed in brake system components, and may cause brake failure.

  • Page 251: Servicing

    BRAKES RTV1140CPX, WSM Master Cylinder Inner Parts 1. Remove the reservoir (2) from master cylinder body (3). 2. Pushing in the piston (8), remove the internal snap ring (7). 3. Remove the piston from master cylinder body (3). 4. Pushing in the secondary piston (9), remove the stop pin (10).

  • Page 252: Rear Brake

    BRAKES RTV1140CPX, WSM (2) Rear Brake Brake Cam Lever Movement 1. Move the brake cam lever by hand to check the movement. 2. If the movement is heavy, refine the brake cam with emery paper. 9Y1210293BRS0019US0 Flatness of Actuator and Bearing Holder 1.
  • Page 253 O-ring and replace the new one. NOTE • These O-ring and dust seal are designed specifically for brake fluid application. Use only Kubota genuine parts (for brake fluid use) for replacement. During replacement, take care to avoid adherence of other oil or grease.
  • Page 254 FRONT AXLE KiSC issued 05, 2014 A...
  • Page 255 MECHANISM CONTENTS 1. STRUCTURE..........................5-M1 [1] FRONT AXLE ........................5-M1 [2] FRONT SUSPENSION......................5-M2 KiSC issued 05, 2014 A...
  • Page 256 FRONT AXLE RTV1140CPX, WSM 1. STRUCTURE [1] FRONT AXLE (1) Bevel Gear Shaft (8T) (4) Strut (7) Ball Joint (9) Front Case (2) Bevel Gear (35T) (5) Knuckle (8) Constant Velocity (CV) Joint (10) Lower Arm (3) Side Gear (6) Front Axle The front axle consists mainly of knuckles (5) (right and left), front case (9) and CV (constant velocity) joint (8).
  • Page 257 FRONT AXLE RTV1140CPX, WSM [2] FRONT SUSPENSION (1) Spring (4) Knuckle (7) Bump Stopper (10) Lower Arm (2) Shock Absorber (5) Front Axle (8) Constant Velocity (CV) Joint (11) Rubber Bushing (3) Strut (6) Ball Joint (9) Front Case The MacPherson strut type suspension has the shock absorber (2) as a strut (3) for positioning the front wheels.
  • Page 258 SERVICING CONTENTS 1. TROUBLESHOOTING.........................5-S1 2. SERVICING SPECIFICATIONS ....................5-S2 3. TIGHTENING TORQUES......................5-S3 4. CHECKING, DISASSEMBLING AND SERVICING ..............5-S4 [1] CHECKING AND ADJUSTING....................5-S4 [2] PREPARATION ........................5-S5 (1) Front Suspension ......................5-S6 (2) Knuckle Case ........................5-S10 (3) Front Differential Case....................5-S11 [3] DISASSEMBLING AND ASSEMBLING ................5-S13 (1) Strut ..........................5-S13 (2) Front Axle ........................5-S14 (3) Front Differential Assembly ...................5-S15...

  • Page 259: Troubleshooting

    FRONT AXLE RTV1140CPX, WSM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Front Wheels Wander Tire pressure uneven Adjust G-54 to Right or Left Improper toe-in adjustment (improper alignment) Adjust 5-S4 Tie-rod end loose Tighten 5-S7 Air sucked in power steering circuit Bleed –...

  • Page 260: Servicing Specifications

    FRONT AXLE RTV1140CPX, WSM 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Front Wheel Alignment Toe-in 0 to 20 mm – 0 to 0.79 in. Differential Pinion to Differential Side Gear Backlash 0.10 to 0.30 mm – 0.0040 to 0.011 in.

  • Page 261: Tightening Torques

    FRONT AXLE RTV1140CPX, WSM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-10.) Item N·m kgf·m lbf·ft Front wheel mounting screw 75 to 90 7.6 to 9.2...

  • Page 262: Checking, Disassembling And Servicing

    FRONT AXLE RTV1140CPX, WSM 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Toe-in 1. Park vehicle on a flat place. 2. Turn steering wheel so front wheels are in the straight ahead position. 3. Lock the park brake and stop the engine.

  • Page 263: Preparation

    FRONT AXLE RTV1140CPX, WSM [2] PREPARATION Battery CAUTION • When disconnecting the battery cables, disconnect the negative cable from the battery first. When connecting, connect the positive cable to the battery first. 1. Set the seat to 1 row. 2. Remove the battery cover (1).

  • Page 264: Front Suspension

    3. After draining, reinstall the drain plug. (When reassembling) • Use KUBOTA UDT or KUBOTA SUPER UDT fluid. Refer to "LUBRICANTS, FUEL AND COOLANT". (See page G-8.) 0.6 L...
  • Page 265 FRONT AXLE RTV1140CPX, WSM Front Suspension (Strut Suspension) 1. Place the stand under the frame. 2. Remove the joint guard (4). 3. Loosen the lower arm mounting bolt and nut (3). 4. Remove the cotter pin and remove the tie-rod end slotted nut.
  • Page 266 FRONT AXLE RTV1140CPX, WSM (Continued) (When reassembling) • When installing the strut (1) to knuckle case, set the wedge to decide the position of strut to the slit of the knuckle case. • When inserting the cotter pin, if the slots in the nut do not align with the cotter pin hole in the tie-rod end and case mounting bolt, tighten the nut clockwise up to next alignment.
  • Page 267 FRONT AXLE RTV1140CPX, WSM Lower Arm 1. Remove the lower arm mounting bolt and nut (1). 2. Remove the lower arm (2). (When reassembling) NOTE • Tighten the lower arm mounting bolt and nut (1) with the specified tightening torque after setting up the wheel and unloading the machine on ground.

  • Page 268: Knuckle Case

    FRONT AXLE RTV1140CPX, WSM (2) Knuckle Case Knuckle Case CAUTION • When the brake hose is removed, the brake fluid comes out. Take care not to stain other hoses or rubber boot with the brake fluid. Brake fluid stains should be washed and wiped off immediately.
  • Page 269 FRONT AXLE RTV1140CPX, WSM (3) Front Differential Case Front Differential Assembly 1. Place the stand under the frame. 2. Remove the front wheel. 3. Remove the joint guard (5). 4. Loosen the lower arm mounting bolt and nut (3). 5. Remove the cotter pin, and remove the slotted nut (7) for tie-rod end (6).

  • Page 270: Front Differential Case

    FRONT AXLE RTV1140CPX, WSM (Continued) (When reassembling) • When installing the strut (1) to knuckle case assembly (12), set the wedge to decide the position of strut to the slit of the knuckle case assembly. • When inserting the cotter pin, if the slots in the nut do not align with the cotter pin hole in the tie-rod end or knuckle case mounting bolt, tighten the nut clockwise up to next alignment.
  • Page 271 FRONT AXLE RTV1140CPX, WSM [3] DISASSEMBLING AND ASSEMBLING (1) Strut Strut 1. Cramp the strut in a vise. 2. Shorten spring with a spring compressor (3). 3. Remove the strut mount bracket mounting nut (6). 4. Remove the strut mount bracket (1), spring (4), plates, spacer, spring upper support (2) and stopper (5).
  • Page 272 FRONT AXLE RTV1140CPX, WSM (2) Front Axle Front Axle 1. Remove the oil seal (1). 2. Remove the snap ring collar (2) and remove the external snap ring (3). 3. Tap out the front axle (5) with a plastic hammer.
  • Page 273 FRONT AXLE RTV1140CPX, WSM (3) Front Differential Assembly Front Differential Assembly 1. Remove the front differential case cover mounting screws and separate the front differential case cover (1). 2. Remove the differential gear assembly (2). (When reassembling) • Apply liquid gasket (Three Bond 1215E, Locktite 5699 or equivalent) to joint face of the front case cover and front case other eliminate the oil and stuck liquid gasket.
  • Page 274 FRONT AXLE RTV1140CPX, WSM Differential Side Gear and Differential Pinion 1. Put parting marks on the differential pinion (2) and the differential side gear (1). 2. Tap out the dowel pin (3). 3. Remove the differential pinion shaft. 4. Remove the differential pinion (4), differential side gear (1) and shim (5).

  • Page 275: Servicing

    FRONT AXLE RTV1140CPX, WSM [4] SERVICING Checking Bearing 1. Hold the inner race, and push and pull the outer race in all directions to check for wear and roughness. 2. Apply transmission fluid to the bearing, and hold the inner race.
  • Page 276 FRONT AXLE RTV1140CPX, WSM Clearance between Differential Pinion Shaft and Differential Pinion 1. Measure the differential pinion shaft O.D. with an outside micrometer. 2. Measure the differential pinion I.D. with an inside micrometer, and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace faulty parts.
  • Page 277 FRONT AXLE RTV1140CPX, WSM Tooth Contact between Bevel Pinion Shaft and Bevel Gear (When checking) • Use same number of shims as before disassembling. • Use same thickness of collar as before disassembling. 1. Apply red lead (or prussian blue) lightly on the teeth of spiral bevel pinion shaft.
  • Page 278 FRONT AXLE RTV1140CPX, WSM Backlash between Bevel Pinion Shaft and Bevel Gear 1. Put the solder (0.5 mm (0.020 in.) thickness) on the position where the tooth proper contact of bevel pinon shaft. 2. Reassemble the differential assembly and front case cover, and rotate the bevel pinion shaft carefully.
  • Page 279 FRONT AXLE RTV1140CPX, WSM Lower Arm, and Rubber Bush 1. Replace any bushing that are worn, cracked, hardened, or otherwise damaged. 2. Remove the lower arm rubber bush (5) with press machine and lower arm bush tool 1 (1), 2 (2), 3 (3).
  • Page 280 FRONT AXLE RTV1140CPX, WSM Drive Shaft Boot 1. Remove the external snap ring (1), bearing (2) and bearing holder (3). 2. Unlock the both boot bands (5), (6) and slide the boot DOJ (4). 3. Remove the internal circlip (7) and wipe the old grease.
  • Page 281 FRONT AXLE RTV1140CPX, WSM (Continued) 1. Unlock the both boot bands (2), (3) and remove the boot BJ (1) of knuckle case side. 2. Wipe the old grease. NOTE • The knuckle case side (wheel side) joint can not be disassembled.
  • Page 282 FRONT AXLE RTV1140CPX, WSM (Continued) (When reassembling) • Check the each joints, if any joint does not work smoothly without rattling or sticking, the joint bearing is damaged. Replace the drive shaft with new one. • Visually check the splines on the each shafts, if they are badly worn or chipped, replace the drive shaft with new one.
  • Page 283 STEERING KiSC issued 05, 2014 A...
  • Page 284 MECHANISM CONTENTS 1. STRUCTURE..........................6-M1 2. HYDRAULIC CIRCUIT ....................... 6-M2 3. STEERING CONTROLLER......................6-M3 4. STEERING CYLINDER ......................6-M5 KiSC issued 05, 2014 A...

  • Page 285: Structure

    (8) Hydraulic Pump (9) Cylinder Hose (10) Tie-rod (11) Steering Cylinder The full hydrostatic type power steering is used on RTV1140CPX. This steering system is composed of steering wheel, steering controller, steering cylinder and other components shown in the figure. 9Y1210293STM0001US0 6-M1...

  • Page 286: Hydraulic Circuit

    STEERING RTV1140CPX, WSM 2. HYDRAULIC CIRCUIT This model is provided with a full hydrostatic power steering. In the full hydrostatic power steering, the steering controller is connected to the steering cylinder (1) with only the hydraulic hoses. Accordingly, it does not have mechanical transmitting parts such as steering gear, pitman arm, drag link, etc.

  • Page 287: Steering Controller

    STEERING RTV1140CPX, WSM 3. STEERING CONTROLLER The steering controller consists of a control valve (3) and a metering device (2).  Control Valve The control valve is a rotating spool type. When the steering wheel is not turned, the position of the spool (6) and sleeve (8) is kept neutral by the centering spring (7).
  • Page 288 STEERING RTV1140CPX, WSM Relief Valve The relief valve (1) is located in the steering controller. It controls the maximum pressure of the power steering system. Its setting pressure is as follows. 8.0 to 9.0 MPa 82 to 91 kgf/cm 1200 to 1300 psi...

  • Page 289: Steering Cylinder

    STEERING RTV1140CPX, WSM 4. STEERING CYLINDER (1) Piston Rod (4) Wiper Ring (7) Cap Bolt (10) Center Piston (2) Internal Snap Ring (5) Internal Snap Ring (8) O-ring (11) Cylinder Tube (3) Washer (6) Cylinder Head (9) Seal Ring The steering cylinder is single piston both rod double-acting type. This steering cylinder is installed parallel to the front axle and connected to tie-rods.
  • Page 290 SERVICING CONTENTS 1. TROUBLESHOOTING.........................6-S1 2. SERVICING SPECIFICATIONS ....................6-S2 3. TIGHTENING TORQUES......................6-S3 4. CHECKING, DISASSEMBLING AND SERVICING ..............6-S4 [1] CHECKING..........................6-S4 [2] PREPARATION ........................6-S5 (1) Separating Power Steering Controller ................6-S5 (2) Separating Power Steering Cylinder ................6-S7 (3) Separating Hydraulic Pump.....................6-S8 (4) Removing Power Steering Hose ...................6-S10 [3] DISASSEMBLING AND ASSEMBLING ................6-S14 (1) Power Steering Cylinder....................6-S14 (2) Hydraulic Pump ......................6-S15...
  • Page 291 STEERING RTV1140CPX, WSM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Cannot Be Steered Steering controller malfunctioning Replace 6-S5 Hose broken Replace 6-S10 Hard Steering Power steering oil improper Change with specified Hydraulic pump malfunctioning Replace 6-S8 Steering controller malfunctioning...

  • Page 292: Servicing Specifications

    STEERING RTV1140CPX, WSM 2. SERVICING SPECIFICATIONS POWER STEERING BODY Item Factory Specification Allowable Limit Relief Valve Operating 8.0 to 9.0 MPa – Pressure 82 to 91 kgf/cm 1200 to 1300 psi 9Y1210293STS0002US0 6-S2 KiSC issued 05, 2014 A...
  • Page 293 STEERING RTV1140CPX, WSM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-10.) Item N·m kgf·m lbf·ft ROPS pipe mounting bolt and nut 48.0 to 55.8...

  • Page 294: Checking, Disassembling And Servicing

    STEERING RTV1140CPX, WSM 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING Relief Valve Operating Pressure CAUTION • When checking, park the machine on flat ground, apply the parking brake. 1. Disconnect the power steering hose (1) L (or R) from steering cylinder, and set a pressure gauge.

  • Page 295: Preparation

    STEERING RTV1140CPX, WSM [2] PREPARATION (1) Separating Power Steering Controller Battery CAUTION • When disconnecting the battery cables, disconnect the negative cable from the battery first. When connecting, connect the positive cable to the battery first. 1. Set the seat to 1 row.
  • Page 296 STEERING RTV1140CPX, WSM Bonnet Lower 1. Remove the four screw (2). 2. Remove the screws (3) from underneath the bonnet lower. 3. Remove the bonnet lower (1). (1) Bonnet Lower (3) Screw (2 pcs) (2) Screw (4 pcs) 9Y1210293STS0005US0 Steering Wheel and Panel 1.

  • Page 297: Separating Power Steering Cylinder

    STEERING RTV1140CPX, WSM Steering Controller 1. Disconnect the power steering hoses (2), (3), (4), (5). 2. Remove the steering controller mounting screws and remove the steering controller (1). (When reassembling) • Be sure to connect the power steering hoses to their original position, and tighten them to the specified torque.

  • Page 298: Separating Hydraulic Pump

    5. After draining, reinstall the drain plug. 6. Install the under guard. (When refilling) • Fill with new KUBOTA SUPER UDT fluid up to the upper notch on the dipstick. (See page G-8.) How to check: Wipe dipstick clean with a rag and screw filling plug into filling hole.
  • Page 299 STEERING RTV1140CPX, WSM Battery CAUTION • When disconnecting the battery cables, disconnect the negative cable from the battery first. When connecting, connect the positive cable to the battery first. 1. Set the seat to 1 row. 2. Remove the battery cover (1).

  • Page 300: Removing Power Steering Hose

    STEERING RTV1140CPX, WSM Hydraulic Pump 1. Disconnect the main shift cable (2), select cable (3), accelerator wire (1) and foot throttle cable (4) from cable stay (5). 2. Remove the cable stay (5). 3. Disconnect the suction hose (7), power steering delivery hose (8) and hydraulic control valve delivery hose (9).
  • Page 301 STEERING RTV1140CPX, WSM Bonnet Upper 1. Remove the snap pin and remove the bonnet upper (3). 2. Remove the ROPS pipes (1). 3. Lift ROPS boots and remove the three screws on both sides. 4. Remove the ROPS pipe (front) (2).
  • Page 302 STEERING RTV1140CPX, WSM Seat and Center Cover 1. Remove the seat belts (1), (2). 2. Remove the seat (3). 3. Remove the side cover RH (4) and LH (5). 4. Remove the center cover (6). 5. Remove the step mat (7) and center step (8).
  • Page 303 • After running the engine for few minutes, stop it and check the oil level again, if low, add oil to prescribed level. • Use KUBOTA UDT fluid or SUPER UDT fluid. Refer to "LUBRICANTS, FUEL AND COOLANT". (See page G-8.)

  • Page 304: Disassembling And Assembling

    STEERING RTV1140CPX, WSM [3] DISASSEMBLING AND ASSEMBLING (1) Power Steering Cylinder Power Steering Cylinder and Tie-rod 1. Remove the cylinder hose adaptors (2), (3). 2. Remove the tie-rods (1), (4) from piston rod (5). 3. Remove the cylinder holders (6).
  • Page 305 STEERING RTV1140CPX, WSM (2) Hydraulic Pump Oil Seal 1. Remove the internal snap ring (2), and remove the oil seal (1). (When reassembling) • If the oil seal is defective, worn or scratched, replace it. (1) Oil Seal (2) Internal Snap Ring...

  • Page 306: Hydraulic System

    HYDRAULIC SYSTEM KiSC issued 05, 2014 A...
  • Page 307 MECHANISM CONTENTS 1. STRUCTURE..........................7-M1 2. HYDRAULIC CIRCUIT ....................... 7-M2 [1] HYDRAULIC CARGO BED LIFT ..................7-M2 3. HYDRAULIC PUMP........................7-M3 4. HYDRAULIC CONTROL VALVE....................7-M4 [1] RELIEF VALVE ........................7-M4 [2] FLOATING WITH DETENT VALVE ..................7-M5 5. HYDRAULIC CYLINDER......................7-M7 KiSC issued 05, 2014 A...
  • Page 308 (9) Quick Coupler (10) Hydraulic Cylinder Hose (11) Suction Hose (12) Suction Pipe The cargo bed lifting system of RTV1140CPX is composed of the hydraulic pump, control valve, hydraulic cylinder, oil tank and other components as shown in the figure. 9Y1210293HYM0001US0 7-M1...
  • Page 309 B Port Pump Port Tank Port The cargo bed lifting system of RTV1140CPX is composed of the hydraulic pump, control valve, hydraulic cylinder, oil tank and other components as shown in the figure. This system has the following functions. 1. Oil is supplied by hydraulic pump which is driven by the governor shaft in the engine. Therefore, hydraulic pump starts running when engine is started.

  • Page 310: Hydraulic Pump

    HYDRAULIC SYSTEM RTV1140CPX, WSM 3. HYDRAULIC PUMP The hydraulic pump has the front pump and the rear pump. The front pump supplies the oil to the cargo bed lift system. The rear pump supplies the oil to the power steering system.

  • Page 311: Hydraulic Control Valve

    HYDRAULIC SYSTEM RTV1140CPX, WSM 4. HYDRAULIC CONTROL VALVE [1] RELIEF VALVE The hydraulic raising and lowering circuit is fitted with a relief valve to control the maximum pressure. This is a guide piston relief valve with damper, a direct acting relief valve suitable for relatively high...

  • Page 312: Floating With Detent Valve

    HYDRAULIC SYSTEM RTV1140CPX, WSM [2] FLOATING WITH DETENT VALVE Neutral (1) Spool (2) Check Valve (3) Detent Ball (4) Detent Sleeve A Port (Lift Cylinder) B Port (Lift Cylinder) From Hydraulic Pump To Oil Tank Pressure-fed oil from the hydraulic pump is delivered into the P port, and flows to the oil tank through T port.
  • Page 313 HYDRAULIC SYSTEM RTV1140CPX, WSM Down (1) Check Valve (2) Spool A Port (Lift Cylinder) B Port (Lift Cylinder) Pump Port Tank Port When the hydraulic control lever is set to "DOWN" position, the spool (2) is moved in the direction of the arrow, the pressure-fed oil in the P port opens the check valve (1) and flows to the implement cylinder via A port.

  • Page 314: Hydraulic Cylinder

    HYDRAULIC SYSTEM RTV1140CPX, WSM 5. HYDRAULIC CYLINDER The external type hydraulic cylinders are used for three point linkage system. This hydraulic cylinder is single double type, and it is installed directly between main frame arm cargo bed. The main components of the hydraulic cylinder are shown in the figure.
  • Page 315 SERVICING CONTENTS 1. TROUBLESHOOTING.........................7-S1 2. SERVICING SPECIFICATIONS ....................7-S2 [1] RELIEF VALVE ........................7-S2 [2] HYDRAULIC PUMP ......................7-S2 3. TIGHTENING TORQUES......................7-S3 4. CHECKING, DISASSEMBLING AND SERVICING ..............7-S4 [1] CHECKING AND ADJUSTING....................7-S4 (1) Hydraulic Control Valve, Pump and Cylinder ..............7-S4 [2] PREPARATION ........................7-S5 (1) Separating Hydraulic Pump.....................7-S5 (2) Separating Hydraulic Cylinder ..................7-S7 (3) Hydraulic Control Valve ....................7-S8...
  • Page 316 HYDRAULIC SYSTEM RTV1140CPX, WSM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Implement Does Not Control valve broken Replace 7-S8 Rise (No Noise) Control valve improperly assembled Repair 7-S11 Relief valve spring damaged Replace 7-S11 Spool sticks Repair 7-S11 Piston O-ring or cylinder damaged...

  • Page 317: Servicing Specifications

    HYDRAULIC SYSTEM RTV1140CPX, WSM 2. SERVICING SPECIFICATIONS [1] RELIEF VALVE Item Factory Specification Allowable Limit Relief Valve Setting Pressure 14.5 to 15.5 MPa – • Engine Speed 148 to 158 kgf/cm −1 3000 min (rpm) 2110 to 2240 psi • Oil Temperature 45 to 55 °C (113 to 131 °F)
  • Page 318 HYDRAULIC SYSTEM RTV1140CPX, WSM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-10.) Item N·m kgf·m lbf·ft Power steering delivery hose retaining nut 21.6 to 25.7...

  • Page 319: Checking, Disassembling And Servicing

    HYDRAULIC SYSTEM RTV1140CPX, WSM 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (1) Hydraulic Control Valve, Pump and Cylinder Relief Valve Setting Pressure 1. Disconnect the quick coupler 2 (2). 2. Set the adaptor, cable and pressure gauge. 3. Place the range gear shift lever in neutral.

  • Page 320: Preparation

    5. After draining, reinstall the drain plug. 6. Install the under guard. (When refilling) • Fill with new KUBOTA SUPER UDT fluid up to the upper notch on the dipstick. (See page G-8.) How to check: Wipe dipstick clean with a rag and screw filling plug into filling hole.
  • Page 321 HYDRAULIC SYSTEM RTV1140CPX, WSM Battery CAUTION • When disconnecting the battery cables, disconnect the negative cable from the battery first. When connecting, connect the positive cable to the battery first. 1. Set the seat to 1 row. 2. Remove the battery cover (1).

  • Page 322: Separating Hydraulic Cylinder

    HYDRAULIC SYSTEM RTV1140CPX, WSM Hydraulic Pump 1. Disconnect the main shift cable (2), select cable (3), accelerator wire (1) and foot throttle cable (4) from cable stay (5). 2. Remove the cable stay (5). 3. Disconnect the suction hose (7), power steering delivery hose (8) and hydraulic control valve delivery hose (9).

  • Page 323: Hydraulic Control Valve

    HYDRAULIC SYSTEM RTV1140CPX, WSM Cargo Bed 1. Lift up the cargo bed (1) by hand and support it with the safety support so that the hydraulic cylinder should not drop. 2. Remove the cotter pin and clevis pin (2). 3. Disconnect the connector (3) from main harness, then separate the harness for the tail lamps.

  • Page 324: Disassembling And Assembling

    HYDRAULIC SYSTEM RTV1140CPX, WSM Hydraulic Control Valve Assembly 1. Remove the valve arm (1). 2. Disconnect the hydraulic cylinder tubes (4) (5) from hydraulic control valve (3). 3. Disconnect the delivery hose (6) and return hose (2) from hydraulic control valve (3).

  • Page 325: Disassembling Hydraulic Cylinder

    HYDRAULIC SYSTEM RTV1140CPX, WSM (2) Disassembling Hydraulic Cylinder Cylinder Rod Assembly 1. Drain hydraulic oil from the cylinder, and secure the tube end of the cylinder in a vise. 2. Unscrew the cylinder head (1) with the adjustable gland nut wrench (4).

  • Page 326: Disassembling Control Valve Assembly

    HYDRAULIC SYSTEM RTV1140CPX, WSM (3) Disassembling Control Valve Assembly Hydraulic Control Valve Assembly (1) O-ring (2) Back Up Ring (3) Collar (4) Spring Holder (5) Spring (6) Spring Holder (7) Detent Bolt (8) Plug (9) Detent Plug (10) Spring (11) Ball...

  • Page 327: Servicing

    HYDRAULIC SYSTEM RTV1140CPX, WSM [4] SERVICING (1) Hydraulic Pump Clearance between Tip of Gear Tooth and Casing 1. Measure the clearance between gear and casing at several points with feeler gauge. 2. If the clearance exceeds the allowable limit, replace the assembly.

  • Page 328: Electrical System

    ELECTRICAL SYSTEM KiSC issued 05, 2014 A...
  • Page 329 MECHANISM CONTENTS 1. WIRING DIAGRAM........................8-M1 2. STARTING SYSTEM........................8-M2 [1] STARTER..........................8-M3 [2] GLOW PLUG ........................8-M4 [3] SAFETY SWITCH ........................ 8-M4 (1) Main Shift Arm ........................ 8-M4 [4] ENGINE STOP SOLENOID ....................8-M5 3. CHARGING SYSTEM......................... 8-M6 [1] ALTERNATOR ........................8-M7 [2] IC REGULATOR........................

  • Page 330: Wiring Diagram

    ELECTRICAL SYSTEM RTV1140CPX, WSM 1. WIRING DIAGRAM 8-M1 KiSC issued 05, 2014 A...

  • Page 331: Starting System

    ELECTRICAL SYSTEM RTV1140CPX, WSM 2. STARTING SYSTEM (1) Battery (6) Fuse (5 A) (10) Solenoid Relay (14) Ground (2) Main Switch (7) Fuse (5 A) (11) Engine Stop Solenoid (3) Slow Blow Fuse (60 A) (8) Neutral Safety Switch (12) Glow Plug...

  • Page 332: Starter

    ELECTRICAL SYSTEM RTV1140CPX, WSM [1] STARTER (1) Armature (2) Yoke (3) Brush Holder (4) End Frame (5) Gear (6) Drive End Frame (7) Pinion (8) Roller Clutch (9) Ball (10) Spring (11) Magnet Switch The starter motor is a reduction type. The speed of the pinion gear is reduced to approximately one third of motor one.

  • Page 333: Glow Plug

    ELECTRICAL SYSTEM RTV1140CPX, WSM [2] GLOW PLUG This plug is a two-material type QGS (Quick Glow System) quick temperature rise, self-controlling function as well as excellent durability. The heater (4) connected in series to the heater (3), which also functions as the resistor, is incorporated in the sheath tube (1) of the super glow plug.

  • Page 334: Engine Stop Solenoid

    ELECTRICAL SYSTEM RTV1140CPX, WSM [4] ENGINE STOP SOLENOID Flowing of the battery current into the stop solenoid (1), the plunger (2) move to left side so that the movement of control rack becomes free, when the battery current stops, the plunger (2) is returned to the original position by the spring to keep the control rack (3) in "No fuel injection"...

  • Page 335: Charging System

    ELECTRICAL SYSTEM RTV1140CPX, WSM 3. CHARGING SYSTEM (1) Battery (3) Slow Blow Fuse (50 A) (5) Fuse (10 A) To Combination Meter (2) Main Switch (4) Slow Blow Fuse (60 A) (6) Alternator (Charge Lamp) The charging system supplies electric power for various electrical devices and also charges the battery while the engine runs.

  • Page 336: Alternator

    ELECTRICAL SYSTEM RTV1140CPX, WSM [1] ALTERNATOR A compact alternator with an IC regulator is used, having the following characteristics: • Cooling performance safety have been improved by combining the cooling fan with the rotor and incorporating the fan / rotor unit inside the alternator.

  • Page 337: Lighting System

    ELECTRICAL SYSTEM RTV1140CPX, WSM 4. LIGHTING SYSTEM (1) Battery (6) Fuse (15 A) (10) Horn Switch (14) Head Light LH (2) Main Switch (7) Combination Switch (11) Flasher Unit (Option) (15) Tail Light RH (3) Slow Blow Fuse (60 A)

  • Page 338: Cooling System

    ELECTRICAL SYSTEM RTV1140CPX, WSM 5. COOLING SYSTEM (1) Battery (4) Slow Blow Fuse (50 A) (7) Radiator Fan Relay (9) Radiator Fan Motor (2) Main Switch (5) Fuse (30 A) (8) Coolant Temperature Switch (10) Ground (3) Slow Blow Fuse (60 A) (6) Fuse (10 A) The cooling system consists of coolant temperature switch, relay, fan motor, etc..

  • Page 339: Fan Motor

    ELECTRICAL SYSTEM RTV1140CPX, WSM [1] FAN MOTOR The cooling fan of this vehicle is not driven by the engine drive but an electric motor. An electric fan can be installed by separating from the engine. And, it can be operated when it is necessary.

  • Page 340: Gauges

    ELECTRICAL SYSTEM RTV1140CPX, WSM 6. GAUGES (1) Battery (8) Fuse (5 A) (15) Charge Lamp (21) Brake Fluid Switch (2) Main Switch (9) Combination Meter (16) Oil Pressure Lamp (22) Parking Brake Switch (3) Slow Blow Fuse (60 A) (10) Speed Meter...

  • Page 341: Fuel Quantity

    ELECTRICAL SYSTEM RTV1140CPX, WSM [1] FUEL QUANTITY Fuel Level Sensor The remaining fuel quantity is detected by the fuel level sensor installed in the fuel tank and indicated on the fuel gauge. For detection, a float and a resistor are used.

  • Page 342: Traveling Speed Sensor

    ELECTRICAL SYSTEM RTV1140CPX, WSM [3] TRAVELING SPEED SENSOR Measure the traveling speed with the rotation sensor at the right side of the front case. This sensor is the electromagnetic picking up type and is wound with coil (1) around a permanent magnet (2).
  • Page 343 SERVICING CONTENTS 1. TROUBLESHOOTING.........................8-S1 2. SERVICING SPECIFICATIONS ....................8-S6 3. TIGHTENING TORQUES......................8-S7 4. CHECKING, DISASSEMBLING AND SERVICING ..............8-S8 [1] CHECKING AND ADJUSTING....................8-S8 (1) Battery ..........................8-S8 (2) Main Switch ........................8-S9 (3) Starter..........................8-S11 (4) Glow Plug ........................8-S12 (5) Safety Switch.........................8-S13 (6) Engine Stop Solenoid ....................8-S13 (7) Alternator ........................8-S14 (8) Lighting System ......................8-S15 (9) Cooling System ......................8-S18...
  • Page 344 ELECTRICAL SYSTEM RTV1140CPX, WSM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page All Electrical Battery discharged or defective Recharge or replace G-28 Equipments Do Not Battery positive cable disconnected or improperly Repair or replace 8-S8 Operate connected Battery negative cable disconnected or...
  • Page 345 ELECTRICAL SYSTEM RTV1140CPX, WSM STARTING SYSTEM Reference Symptom Probable Cause Solution Page Starter Motor Does Battery discharged or defective Recharge or replace G-28 Not Operate Slow blow fuse blown Replace G-41 Safety switch improperly adjusted or defective Repair or replace...
  • Page 346 ELECTRICAL SYSTEM RTV1140CPX, WSM LIGHTING SYSTEM Reference Symptom Probable Cause Solution Page Head Light Does Not Fuse blown (15 A) Replace G-41 Light Combination switch defective Replace 8-S15 Bulb blown Replace G-42 Wiring harness disconnected or improperly Repair or Replace –...
  • Page 347 ELECTRICAL SYSTEM RTV1140CPX, WSM Reference Symptom Probable Cause Solution Page Oil Pressure Lamp Engine oil pressure too low Repair engine – Lights Up When Engine oil insufficient Replenish Engine Is Running Oil pressure switch defective Replace 8-S16 Short circuit between oil pressure switch lead Repair –...
  • Page 348 ELECTRICAL SYSTEM RTV1140CPX, WSM GAUGES Reference Symptom Probable Cause Solution Page Fuel Gauge Does Not Fuel gauge defective Replace 8-S23 Function Fuel level sensor defective Replace 8-S21 Wiring harness disconnected or improperly Replace or Replace – connected (between fuel gauge and fuel level...

  • Page 349: Servicing Specifications

    ELECTRICAL SYSTEM RTV1140CPX, WSM 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Battery Voltage More then 12 V – Potential Less than 0.1 V – Difference Glow Plug Resistance Approx. 0.9 Ω – Starter • Commutator O.D. 30.0 mm 29.0 mm 1.18 in.
  • Page 350 ELECTRICAL SYSTEM RTV1140CPX, WSM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-10.) Item N·m kgf·m lbf·ft Starter (B terminal nut) 5.9 to 11 0.60 to 1.2...

  • Page 351: Checking, Disassembling And Servicing

    ELECTRICAL SYSTEM RTV1140CPX, WSM 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING CAUTION • To avoid accidental short circuit, be sure to attach the positive cable to the positive terminal before the negative cable is attached to the negative terminal.

  • Page 352: Main Switch

    ELECTRICAL SYSTEM RTV1140CPX, WSM (2) Main Switch Main Switch 1. Disconnect the 4P connector and remove the main switch (1). 2. Perform the following checks (1) Main Switch 9Y1210293ELS0007US0 Connector Voltage 1. Measure the voltage with a voltmeter across the connector B (red) terminal and chassis.
  • Page 353 ELECTRICAL SYSTEM RTV1140CPX, WSM Main Switch Continuity 1) Main Switch Key at OFF Position 1. Set the main switch OFF position. 2. Measure the resistance with an ohmmeter across the B terminal and the ACC terminal, B terminal and ST terminal, B terminal and G terminal.

  • Page 354: Starter

    ELECTRICAL SYSTEM RTV1140CPX, WSM (3) Starter Motor Test CAUTION • Secure the starter to prevent it from jumping up and down while testing the motor. 1. Disconnect the battery negative cable from the battery. 2. Disconnect the battery positive cable and the leads from the starter.

  • Page 355: Glow Plug

    ELECTRICAL SYSTEM RTV1140CPX, WSM (4) Glow Plug Lead Terminal Voltage 1. Disconnect the wiring lead (1) from the glow plug (2) after turning the main switch off. 2. Turn the main switch key to the "PREHEAT" position, and measure the voltage between the lead terminal and the chassis.

  • Page 356: Safety Switch

    ELECTRICAL SYSTEM RTV1140CPX, WSM (5) Safety Switch Safety Switch Continuity 1. Remove the safety switch leads. 2. Connect the circuit tester to the safety switch leads. 3. Measure the resistance between leads. 4. If the safety switch is defective, replace it.

  • Page 357: Alternator

    ELECTRICAL SYSTEM RTV1140CPX, WSM (7) Alternator Alternator 1. Disconnect the 2P connector (3) from alternator after turning the main switch OFF. 2. Perform the following checkings. (1) B Terminal (3) 2P Connector (2) Alternator 9Y1210293ELS0017US0 Connector Voltage 1. Turn the main switch OFF. Measure the voltage between the B terminal (1) and the chassis.

  • Page 358: Lighting System

    ELECTRICAL SYSTEM RTV1140CPX, WSM No-Load Test 1. Connect the 2P connector (6) to previous positions of the alternator after turning the main switch OFF. 2. Connect the jumper lead (3) between IG terminal (4) and B terminal (2). 3. Start the engine and then set at idling speed.
  • Page 359 ELECTRICAL SYSTEM RTV1140CPX, WSM Engine Oil Pressure Lamp 1. Disconnect the wiring lead (2) from the engine oil pressure switch after turning the main switch OFF. 2. Turn the main switch ON and connect a jumper lead from the lead to the chassis.
  • Page 360 ELECTRICAL SYSTEM RTV1140CPX, WSM Parking Brake Lamp 1. Disconnect the connecting lead from the parking brake switch (1) after turning the main switch OFF. 2. Turn the main switch ON and connect a jumper lead from the lead to the chassis.

  • Page 361: Cooling System

    ELECTRICAL SYSTEM RTV1140CPX, WSM Brake Switch Continuity 1. Open the bonnet. 2. Remove the safety switch leads. 3. Connect the circuit tester to the safety switch leads. 4. Measure the resistance between leads. 5. If the safety switch is defective, replace it.
  • Page 362 ELECTRICAL SYSTEM RTV1140CPX, WSM Coolant Temperature Switch 1. Measure the resistance with an ohmmeter across the switch terminals. 2. If infinity is not indicated when the coolant temperature is lower than 83 °C (181 °F), the switch is faulty. 3. If 0 ohms is not indicated when the coolant temperature is higher than 87 to 93 °C (189 to 199 °F), the switch is faulty.
  • Page 363 ELECTRICAL SYSTEM RTV1140CPX, WSM Fan Motor 1. Disconnect the 2P connector (1) of fan motor after turning the main switch OFF. 2. Connect a jumper lead from the terminal (3) to the battery positive terminal post. 3. Connect a jumper lead momentarily between the 2 terminal (4) and the battery negative terminal post.

  • Page 364: Gauges

    ELECTRICAL SYSTEM RTV1140CPX, WSM (10) Gauges Fuel Lever Sensor 1) Connector Terminal Voltage 1. Disconnect the 1P connector (2) from the fuel level sensor (1) after turning the main switch OFF. 2. Turn the main switch ON and measure the voltage with a voltmeter across the connector terminal and the chassis.
  • Page 365 ELECTRICAL SYSTEM RTV1140CPX, WSM Coolant Temperature Sensor 1) Connector Terminal Voltage 1. Disconnect the 1P connector (2) from the coolant temperature sensor after turning the main switch OFF. 2. Turn the main switch ON and measure the voltage with a voltmeter across the connector terminal and the chassis.
  • Page 366 ELECTRICAL SYSTEM RTV1140CPX, WSM Traveling Speed (Rotation) Sensor 1) Connector Terminal Voltage 1. Disconnect the 2P connector (2) from the traveling speed sensor (1) after turning the main switch OFF. 2. Turn the main switch ON and measure the voltage with a voltmeter across the connector terminal 2 (3) and the chassis.

  • Page 367: Relays

    ELECTRICAL SYSTEM RTV1140CPX, WSM (11) Relays Relay 1. Turn the main switch OFF. 2. Remove the side cover (1). 3. Remove the relay which should be checked. 4. Connect the jumper load across the battery positive terminal to relay terminal 1, and the battery negative terminal to relay terminal 2.

  • Page 368: Others

    ELECTRICAL SYSTEM RTV1140CPX, WSM (12) Others Combination Switch (for Horn) 1) Connector Terminal Voltage 1. Disconnect the connector from the combination switch (1) after turning the main switch OFF. 2. Turn the main switch ON and measure the voltage with a voltmeter across the connector terminal B3 (4) to the chassis.

  • Page 369: Disassembling And Assembling

    ELECTRICAL SYSTEM RTV1140CPX, WSM [2] DISASSEMBLING AND ASSEMBLING (1) Starter Motor 1. Remove the nut (1), and disconnect the connecting lead (2) from the magnet switch. 2. Remove the motor through screws (3), and then remove the yoke (4). 3. Remove the end frame screws (6) and then remove the end frame (5).

  • Page 370: Alternator

    ELECTRICAL SYSTEM RTV1140CPX, WSM Magnet Switch 1. Remove the drive end frame mounting screws (1). 2. Take out the overrunning clutch (2), steel ball (3), spring (4), idle gear (7), rollers (5) and retainer (6). (When reassembling) • Apply grease the gear teeth of the idle gear (7) and the overrunning clutch (2), and the steel ball (3).
  • Page 371 ELECTRICAL SYSTEM RTV1140CPX, WSM Brush Holder 1. Unscrew the two screws holding the brush holder, and remove the brush holder (1). (1) Brush Holder 9Y1210293ELS0039US0 IC Regulator 1. Unscrew the three screws holding the IC regulator, and remove the IC regulator (1).
  • Page 372 ELECTRICAL SYSTEM RTV1140CPX, WSM Retainer Plate 1. Unscrew the four screws holding the retainer plate, and remove the retainer plate (1). (1) Retainer Plate 9Y1210293ELS0044US0 Bearing on Drive End Side 1. Press out the bearing from drive end frame (3) with a press and jig (1).

  • Page 373: Panel

    ELECTRICAL SYSTEM RTV1140CPX, WSM (3) Panel Battery CAUTION • When disconnecting the battery cables, disconnect the negative cable from the battery first. When connecting, connect the positive cable to the battery first. 1. Set the seat to 1 row. 2. Remove the battery cover (1).
  • Page 374 ELECTRICAL SYSTEM RTV1140CPX, WSM Bonnet Lower 1. Remove the four screw (2). 2. Remove the screws (3) from underneath the bonnet lower. 3. Remove the bonnet lower (1). (1) Bonnet Lower (3) Screw (2 pcs) (2) Screw (4 pcs) 9Y1210293STS0005US0 Steering Wheel and Panel 1.

  • Page 375: Servicing

    ELECTRICAL SYSTEM RTV1140CPX, WSM [3] SERVICING (1) Starter Overrunning Clutch 1. Inspect the pinion for wear or damage. 2. If there is any defect, replace the overrunning clutch assembly. 3. Check that the pinion turns freely and smoothly in the overrunning direction and does not slip in the cranking direction.
  • Page 376 ELECTRICAL SYSTEM RTV1140CPX, WSM Brush Holder 1. Check the continuity across the brush holder (1) and the holder support (2) with an ohmmeter. 2. If it conducts, replace the brush holder. (1) Brush Holder (2) Holder Support 9Y1210293ELS0050US0 Armature Coil 1.

  • Page 377: Alternator

    ELECTRICAL SYSTEM RTV1140CPX, WSM (2) Alternator Bearing 1. Check the bearing for smooth rotation. 2. If it does not rotate smoothly, replace it. 9Y1210293ELS0053US0 Stator 1. Measure the resistance across each lead of the stator coil with an ohmmeter. 2. If the measurement is not within factory specification, replace it.
  • Page 378 ELECTRICAL SYSTEM RTV1140CPX, WSM Rectifier 1. Check the continuity across each diode of rectifier with an analog ohmmeter. Conduct the test in the (R x 1) setting. 2. The rectifier is normal if the diode in the rectifier conducts in one direction and does not conduct in the reverse direction.
  • Page 379 EDITOR : KUBOTA FARM & INDUSTRIAL MACHINERY SERVICE, LTD. 64, ISHIZU-KITAMACHI, SAKAI-KU, SAKAI-CITY, OSAKA, 590-0823, JAPAN PHONE : ( 81 ) 72-241-1129 : ( 81 ) 72-245-2484 E-mail : ks_g.ksos-pub@kubota.com Printed in Japan 2014. 05, S, EI, EI, engusa Code No.9Y111-02932 2009.

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