Case 621F Service Manual
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Case 621F Service Manual

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621F
TIER 4
Wheel Loader
Service Manual
Print No. 47387703

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  • Page 1 621F TIER 4 Wheel Loader Service Manual Print No. 47387703...
  • Page 2 621F Loader 47387703 Use for Repair Manual Find manuals at http://best-manuals.com/search?&s=CASE-47387703...
  • Page 3 Find manuals at http://best-manuals.com/search?&s=CASE-47387703...
  • Page 4 621F Wheel Loader Repair Manual 47387703 Table of Contents Description Section No. General Tab 1 Section Index - General General Torque Specifications 1001 Fluids and Lubricants 1002 Metric Conversion Chart 1003 Engines Tab 2 Section Index - Engines Engine and Radiator Removal and Installation...
  • Page 5 621F Wheel Loader Repair Manual 47387703 Table of Contents Description Section No. Steering Tab 5 Section Index - Steering Removal and Installation of Steering Components 5001 Steering Specifications, Pressure Checks, and Troubleshooting 5002 Steering Cylinders 5005 Center Pivot 5006 Auxiliary Steering Motor and Pump...
  • Page 6 621F Wheel Loader Repair Manual 47387703 Table of Contents Description Section No. Cylinders 8006 Coupler Solenoid Locking Valve 8007 Ride Control Accumulator 8013 Ride Control Valve 8014 Mounted Equipment Tab 9 Section Index - Mounted Equipment Air Conditioning Troubleshooting and System Checks For System Checks For System with HFC-134a...
  • Page 7 Find manuals at http://best-manuals.com/search?&s=CASE-47387703...
  • Page 8 Metric Conversion Chart ..............1003 Find manuals at http://best-manuals.com/search?&s=CASE-47387703...
  • Page 9 Find manuals at http://best-manuals.com/search?&s=CASE-47387703...
  • Page 10 Section 1001 GENERAL TORQUE SPECIFICATIONS Find manuals at http://best-manuals.com/search?&s=CASE-47387703...
  • Page 11 1001-2 TABLE OF CONTENTS TORQUE SPECIFICATIONS - DECIMAL HARDWARE ..........3 TORQUE SPECIFICATIONS - METRIC HARDWARE .
  • Page 12 1001-3 TORQUE SPECIFICATIONS - DECIMAL HARDWARE Use the torques in this chart when special torques Grade 8 Bolts, Nuts, and Studs are not given. These torques apply to fasteners with both UNC and UNF threads as received from suppliers dry, or when lubricated with engine oil. Not applicable if special graphities, Molydisulfide greases, or other extreme pressure lubricants are Pound-...
  • Page 13 1001-4 TORQUE SPECIFICATIONS - METRIC HARDWARE Use the following torques when specifications are not Grade 10.9 Bolts, Nuts, and Studs given. These values apply to fasteners with coarse threads 10.9 as received from supplier, plated or unplated, or when lubricated with engine oil. These values do not apply if graphite or Molydisulfide grease or oil is Pound- Newton...
  • Page 14 1001-5 TORQUE SPECIFICATIONS - STEEL HYDRAULIC FITTINGS 37 Degree Flare Fitting Straight Threads with O-ring Tube OD Thread Pound- Newton Tube OD Thread Pound- Newton Hose ID Size Inches metres Hose ID Size Inches metres 1/4 inch 7/16-20 72 to 144 8 to 16 1/4 inch 7/16-20...
  • Page 15 1001-6 TORQUE SPECIFICATIONS - STEEL HYDRAULIC FITTINGS O-ring Boss End O-ring Face Seal End Fitting or Lock Nut Nom. Dash Thread Pound- Newton Thread Pound- Newton Size Tube OD Size Inches metres Size Inches metres 1/4 inch 9/16-18 120 to 144 14 to 16 7/16-20 204 to 240...
  • Page 16 Section 1002 FLUIDS AND LUBRICANTS...

  • Page 17: Table Of Contents

    1002-2 TABLE OF CONTENTS CAPACITIES AND LUBRICANTS ............. 3 ENGINE OIL RECOMMENDATIONS .

  • Page 18: Capacities And Lubricants

    Capacity with Filter Change ..................13.25 liters (14 U.S. quarts) Total system capacity....................15.1 liters (16 U.S. quarts) Type of oil........Case AKCELA No. 1 engine oil - see engine oil recommendations on page 4 Engine Cooling System Capacity........................28.4 liters (30 U.S. quarts) Type of Coolant ....................50% water and 50% Ethylene Glycol...

  • Page 19: Engine Oil Recommendations

    1002-4 ENGINE OIL RECOMMENDATIONS Case AKCELA No. 1 Engine oil is recommended for use in your Case engine. Case AKCELA No. 1 Engine Oil will lubricate your engine correctly under all operating conditions. If Case AKCELA No. 1 Multi-Viscosity Oil is not available, use only oil meeting API engine oil service -4 (preferred) or CG-4.

  • Page 20: Transmission Temperature Chart

    1002-5 TRANSMISSION TEMPERATURE CHART BC04F193 DIESEL FUEL SYSTEM Use No. 2 diesel fuel in the engine of this machine. Fuel Storage The use of other fuels can cause the loss of engine If you keep fuel in storage for a period of time, you power and high fuel consumption.

  • Page 21: What Is Selective Catalytic Reduction (Scr)

    1002-6 What is Selective Catalytic Reduction (SCR) The main components of the SCR system include the • Keep container tightly closed. SCR catalyst, the Diesel Exhaust Fluid (DEF)/ • Keep container in a cool, well-ventilated area. AdBlue® injection unit, the DEF/AdBlue® tank, and •...
  • Page 22 1002-7 Glossary Acronym Definition NOTE: The main factors taken into account to define the shelf life in the previous figures are the ambient Diesel Exhaust Fluid storage temperature and the initial alkalinity of International Organization DEF/AdBlue®. The difference in evaporation for Standardization between vented and non-vented storage containers MSDS...

  • Page 23: Selective Catalytic Reduction (Scr) - Basic Instructions

    1002-8 SELECTIVE CATALYTIC REDUCTION (SCR) - BASIC INSTRUCTIONS Requirements Impurities are not entering the DEF/AdBlue® tank. The standardized DEF/AdBlue® nozzle matches T h e o p e r a t o r m u s t m a i n t a i n a p p r o p r i a t e the filler neck diameter.

  • Page 24: Maintenance Schedule

    1002-9 MAINTENANCE SCHEDULE FREQUENCY IN HOURS SERVICE SERVICE POINTS INTERVAL Air cleaner Bleed Fuel Filter of Condensation Hydraulic Filter Variable Periodic Alternator, AC, Drive Belt ( * ) Radiator Coolant Level Fire extinguisher Tires Every 10 Hours Check Engine Oil Level Check Engine Coolant Level Check Transmission Oil Level Every 50 Hours...

  • Page 25: Maintenance Points

    1002-10 MAINTENANCE POINTS W130R0033 See your Operators manual for maintenance of If you operate the machine in severe conditions, safety related items and for detailed information of lubricate and service the machine more frequently. the service items on this chart. Operators and service manuals are available for this machine from your dealer.
  • Page 26 Section 1003 METRIC CONVERSION CHART...
  • Page 27 1003-2 TABLE OF CONTENTS CONVERSION FACTORS ..............3 Metric to U.S.
  • Page 28 1003-3 CONVERSION FACTORS Metric to U.S. MULTIPLY TO OBTAIN Area: sq. meter 10.763 91 square foot hectare 2.471 05 acre Force: newton 3.596 942 ounce force newton 0.224 809 pound force Length: millimeter 0.039 370 inch meter 3.280 840 foot kilometer 0.621 371 mile...
  • Page 29 1003-4 U.S. to Metric MULTIPLY TO OBTAIN Area: square foot 0.092 903 square meter acre 0.404 686 hectare Force: ounce force 0.278 014 newton pound force 4.448 222 newton Length: inch 25.4 * millimeter foot 0.304 8 * meter mile 1.609 344 * kilometer Mass:...
  • Page 30 SECTION INDEX ENGINES Section Title Section Number Engine and Radiator Removal and Installation ..........2000 Stall Tests .
  • Page 32 Section 2000 ENGINE AND RADIATOR REMOVAL AND INSTALLATION...
  • Page 33 2000-2 TABLE OF CONTENTS Engine ................. . 3 Removal .

  • Page 34: Engine

    2000-3 ENGINE Removal STEP 5 STEP 1 BD02N160 Put a 28.4 liter (30 U.S. quart) container below radiator drain. Remove radiator cap. Remove cap BD03A040 and drain coolant into container. Install cap after Park machine on a level surface and lower bucket to coolant has drained.
  • Page 35 2000-4 STEP 7 STEP 10 BD03A231 BD06F109 Double up a nylon lifting strap (1) and slide through Tag and disconnect hood wiring harness connector the exhaust stack (2) on the hood. from rear chassis wiring harness connector. STEP 8 STEP 11 BD03A230 BD03A227 Place a solid steel bar through the strap, raise the...
  • Page 36 2000-5 STEP 12 STEP 15 BD03A232 BD06F110 Carefully raise and remove hood from loader. Lower Loosen clamps on turbocharger and air cleaner, hood onto suitable platform and disconnect lifting remove the intake hose. equipment. STEP 16 STEP 13 BD06F110 Loosen the clamp on the turbocharger for the after BD03A224 Tag and disconnect engine wiring harness connector cooler inlet hose.
  • Page 37 2000-6 STEP 18 STEP 21 BD06F112 BD06F111 Remove the air cleaner and muffler from the bracket. Loosen the clamp on the intake manifold for the after cooler output hose. STEP 22 STEP 19 BD06F113 BD03A118 Loosen the clamp on the after cooler and remove the after cooler outlet hose from the machine.
  • Page 38 2000-7 STEP 23 STEP 26 BD06F115 BD06F118 Remove the drive belt from the engine. Tag and disconnect the wiring from the alternator. STEP 24 STEP 27 BD06F116 BD06F119 Loosen clamps and remove lower cooler hose from Remove bolt securing wiring harness clamp to the engine.
  • Page 39 2000-8 STEP 29 STEP 32 BD06F121 BD06F111 Tag and remove the wires from the starter solenoid Tag and remove the grid heater cable. (3), remove the ground cable (2), and ground strap (1) from the starter. STEP 33 NOTE: Move starter cables away...
  • Page 40 2000-9 STEP 35 STEP 38 BD06F127 BD06F124 Remove the lower cover for the drive shaft. Tag and disconnect the fuel filter heater wires (1), disconnect the fuel line (2) from the fuel filter head, STEP 39 plug the line and cap the fitting. STEP 36 BD03A172 Remove the drive shaft bolts from the flywheel.

  • Page 41: Installation

    2000-10 Installation W130R0032 1. ENGINE MOUNT BOLT 3. INSOLATOR UPPER 5. WASHER 7. NUT 2. WASHER 4. INSOLATOR LOWER 6. WASHER 8. REMOTE OIL DRAIN HOSE STEP 42 STEP 47 If engine rubber isolators require replacement, remove and discard isolators (3 and 4). Install new rubber isolator (4), then rubber isolator (3).
  • Page 42 2000-11 STEP 48 STEP 51 BD06F127 BD06F124 Install the lower cover for the drive shaft. Remove cap from fitting and plug from the hose, connect fuel line (2). Connect fuel filter heater wires STEP 49 (1). Remove and discard tag. STEP 52 BD06F126 Connect and turn on vacuum pump to the hydraulic...
  • Page 43 2000-12 STEP 54 STEP 57 BD06F111 BD06F121 Connect grid heater cable to grid heater. Remove Install the wires to the starter solenoid (3), install the and discard tag. ground cable (2), and ground strap (1) to the starter. Remove and discard tags. STEP 55 STEP 58 BD06F122...
  • Page 44 2000-13 STEP 60 STEP 63 BD06F118 BD06F115 Connect the wiring to the alternator. Remove and Install the drive belt. discard tags. STEP 64 STEP 61 BD06F113 BD06F117 If loader is equipped with air conditioning, mount the compressor using the three mounting bolts (2), connect the engine wiring harness connectors to air compressor clutch connector (1).
  • Page 45 2000-14 STEP 65 STEP 68 BD06F112 BD06F111 Place the muffler and air cleaner on the bracket. Tighten the clamp on the intake manifold for the after Install mounting bolts in air cleaner and tighten, cooler output hose. install the mounting bolts in the muffler and leave loose at this time.
  • Page 46 2000-15 STEP 71 STEP 74 BD06F110 BD03A232 Install the intake hose and tighten the clamps on Carefully raise and place hood over loader. turbocharger and air cleaner. NOTE: Refer to step 7 and 8 of removal for lifting procedure. STEP 72 STEP 75 BD03A225 Install the crankcase ventilation hose and tighten the...
  • Page 47 2000-16 STEP 76 STEP 78 BD03A221 BD03A228 NOTE: If hood strut is not adjusted properly the Install the pin from the top of the lifting motor, lower hood will be damaged. and remove lifting equipment. When a hood is removed and replaced an initial STEP 77 adjustment on the strut is necessary.
  • Page 48 STEP 86 Install a new oil filter on engine. Fill engine with 13.25 Put articulation lock in OPERATING position. liters (14 U.S. quarts) of Case AKCELA Engine Oil (SAE 15W-40). STEP 81 If hydraulic reservoir was drained, fill reservoir with 90.8 liters (24.0 U.S.

  • Page 49: Radiator

    2000-18 RADIATOR Removal STEP 5 STEP 1 Park loader on level surface and lower bucket to ground. Apply parking brake and shut down engine. STEP 2 BD06F128 Remove bolt and washer securing LH fender. Remove LH fender. STEP 6 BD03A040 Put articulation lock in LOCKED position.
  • Page 50 2000-19 STEP 8 STEP 11 BD03A108 BD03A106 Loosen the upper radiator hose clamps, remove the Remove screws and install lifting eyes (1). Attach hose. suitable lifting equipment to lifting eyes. Remove four mounting bolts (2), remove radiator from machine. STEP 9 BD06F129 Loose and remove the lower radiator hose from the radiator.
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