Tennant T20 Service Information Manual
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Tennant T20 Service Information Manual

The safe scrubbing alternative, hygenic fully cleanable tanks, floorsmart integrated cleaning system es extended scrub system
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See also: Service Information Manual , Operator's Manual
T20
Service Information Manual
R
The Safe Scrubbing Alternative
R
Hygenic Fully Cleanable Tanks
t
FloorSmart
Integrated Cleaning System
R
ES Extended Scrub System
331475
Rev. 00 (02-2007)
*331475*
www.tennantco.com

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  • Page 1 Service Information Manual The Safe Scrubbing Alternative Hygenic Fully Cleanable Tanks FloorSmart Integrated Cleaning System ES Extended Scrub System 331475 Rev. 00 (02-2007) *331475* www.tennantco.com...
  • Page 2 2. (B) Identify the machine serial number from the data plate. Refer to the TENNANT Parts Manual. NOTE: Only use TENNANT Company supplied or equivalent parts. Parts and supplies may be ordered online, by phone, by fax or by mail.

  • Page 3: Table Of Contents

    T20 Service Information Manual Table of Contents (Page 1 of 2) page SAFETY PRECAUTIONS…………………………………………………v to vi GENERAL MACHINE INFORMATION Electrical Component Locator………………………………..…… 2 to 9 Hydraulic Component Locator………………………………..…… 10 to 17 Scrub Manifold Details………………………………..…… 16 Side Brush Manifold Details………………………………. 17 Specifications………………………………..………………………...
  • Page 4 T20 Service Information Manual Table of Contents (Page 2 of 2) page ELECTRICAL (continued) Diesel Shutdown Relay (Shutdown Mode)……………………… 98 Gas/LPG Starting System ON………………………………..…… 99 Diesel Starting System ON………………………………..………100 Diesel Glow Plugs ON………………………………..……………101 Conventional Solution Valves………………………………..…… 102 FaST System ON………………………………..…………………103 Fuel Level Sensors………………………………..………………...

  • Page 5: Safety Precautions

    T20 Safety Precautions (Page 1 of 2) The following precautions are used throughout CALIFORNIA PROPOSITION 65 this manual as indicated in their description: WARNING: Engine exhaust from this product contains chemicals known to WARNING: To warn of hazards or the State of California to cause cancer,...
  • Page 6 Keep area well ventilated. - - Use cardboard to locate leaking hydraulic fluid under pressure. - - Use Tennant supplied or approved replacement parts. 7. When loading/unloading machine onto/off truck or trailer: - - Turn off machine.

  • Page 7: General Machine Information

    GENERAL MACHINE INFORMATION T20 331475 (02-2007)
  • Page 8 T20 Electrical Component Locator (Page 1 of 8) IGNITION SWITCH S-1 SOLUTION TANK FULL SWITCH S-14 BATTERY FUSE/RELAY PANEL BOTTOM VIEW HORN BRAKE LIGHT SWITCH S-3 SIDE BRUSH SOLUTION VALVE SOL-7 T20 331475 (02-2007)
  • Page 9 T20 Electrical Component Locator (Page 2 of 8) LIGHT SWITCH S-4 IGNITION SWITCH S-1 AUDIBLE ALARM SPRAY NOZZLE SWITCH S-25 HORN SWITCH S-22 ACCESS PANEL T20 331475 (02-2007)
  • Page 10 T20 Electrical Component Locator (Page 3 of 8) SCRUB VALVE SOLUTION TANK FULL SWITCH S-14 SV1, SV2, SV3, SV4,SV6, SV7 DETERGENT PUMP TOP VIEW PROPEL PEDAL POSITION SENSOR FRONT SIDE BRUSH VALVE MAIN BRUSH SOLUTION SV8, SV10, SV11, SV12 VALVE SOL-3...
  • Page 11 T20 Electrical Component Locator (Page 4 of 8) HYDRAULIC FILTER FaST COMPONENTS SIDE BRUSH SOLUTION CLOGGED SWITCH S-17 VALVE SOL-7 TOP VIEW HYDRAULIC OIL TEMPERATURE SOLUTION TANK EMPTY LPG LOW FUEL SENSOR S-20 (BACK SIDE) SWITCH S-19 PRESSURE SWITCH S-8...
  • Page 12 T20 Electrical Component Locator (Page 5 of 8) GAS/LPG ENGINE GAS/DIESEL FUEL LEVEL SENDER S-7 DIAGNOSTIC CONNECTOR HYDRAULIC FILTER CLOGGED SWITCH S-17 TOP VIEW HYDRAULIC OIL TEMPERATURE FaST COMPONENTS SENSOR S-20 (BACK SIDE) T20 331475 (02-2007)
  • Page 13 T20 Electrical Component Locator (Page 6 of 8) AUTO FILL SOLENOID VALVES INNER VIEW SOL-2 SOL-1 ES PUMP RECOVERY TANK HALF FULL SWITCH S-16 OUTSIDE TANK TOP VIEW INSIDE TANK SPRAY NOZZLE/WAND PUMP RECOVERY TANK FULL SWITCH S-15 T20 331475 (02-2007)
  • Page 14 T20 Electrical Component Locator (Page 7 of 8) Gas / LPG Engine Coolant Temperature Switch Coolant Crankshaft Temperature Position Sensor Sensor Pressure Switch T20 331475 (02-2007)
  • Page 15 T20 Electrical Component Locator (Page 8 of 8) Diesel Engine Coolant Crankshaft Temperature Position Sensor Sensor Pressure Switch T20 331475 (02-2007)

  • Page 16: Hydraulic Component Locator

    T20 Hydraulic Component Locator (Page 1 of 8) VACUUM FAN MOTOR SIDE BRUSH MOTOR CYLINDRICAL MAIN BRUSH MOTOR (REAR) FRONT PROPEL MOTOR LEFT SIDE SQUEEGEE LIFT CYLINDER T20 331475 (02-2007)
  • Page 17 T20 Hydraulic Component Locator (Page 2 of 8) SIDE BRUSH MOTOR VACUUM FAN MOTOR PROPEL MOTOR DISK MAIN BRUSH MOTORS LEFT SIDE SQUEEGEE LIFT CYLINDER T20 331475 (02-2007)
  • Page 18 T20 Hydraulic Component Locator (Page 3 of 8) HYDRAULIC OIL RESERVOIR HYDRAULIC OIL FILTER STEERING VALVE CYLINDRICAL MAIN BRUSH RIGHT SIDE SQUEEGEE LIFT CYLINDER MOTOR (FRONT) T20 331475 (02-2007)
  • Page 19 T20 Hydraulic Component Locator (Page 4 of 8) See pages 16 and 17 for more SCRUB MANIFOLD information on the Scrub and SV1, SV2, SV3, SV4,SV6, SV7 HYDRAULIC OIL HEAT Side Brush manifolds RV1, RV2, CV1, PC1, PC2 EXCHANGER VACUUM FAN MOTOR...
  • Page 20 T20 Hydraulic Component Locator (Page 5 of 8) MAIN SQUEEGEE LIFT CYLINDER STEERING CYLINDER FRONT BUMPER (INNER VIEW) SIDE BRUSH EXTEND CYLINDER SIDE BRUSH LIFT CYLINDER T20 331475 (02-2007)
  • Page 21 T20 Hydraulic Component Locator (Page 6 of 8) DISK SCRUB HEAD LIFT CYLINDER CYLINDRICAL SCRUB HEAD LIFT CYLINDER T20 331475 (02-2007)

  • Page 22: Scrub Manifold Details

    T20 Hydraulic Component Locator (Page 7 of 8) SCRUB MANIFOLD DETAILS T20 331475 (02-2007)

  • Page 23: Side Brush Manifold Details

    T20 Hydraulic Component Locator (Page 8 of 8) SIDE BRUSH MANIFOLD DETAILS FRONT SV10 SV11 SV12 P4 & OR3 0.040 in (1.02 mm) orifice T20 331475 (02-2007)

  • Page 24: Specifications

    HYDRAULIC SYSTEM System Capacity Fluid Type Hydraulic reservoir 38 L (10 gal) TENNANT part no. 65869 -- above 7_ C (45_ F) TENNANT part no. 65870 -- below 7_ C (45_ F) Hydraulic total 45 L (12 gal) STEERING Type...
  • Page 25 2400 + 50 rpm 6 L (6.35 qt) Diesel rated engine oil above CD grade only BRAKING SYSTEM Type Operation Service brakes Mechanical drum brakes (2), one per rear wheel, cable actuated Parking brake Utilize service brakes, cable actuated T20 331475 (02-2007)

  • Page 26: Machine Dimensions

    Low concentrate flow rate 2.6 CC/Minute (0.085 Liquid Ounces/Minute) High concentrate flow rate 5.2 CC/Minute (0.17 Liquid Ounces/Minute) Air pump 12 Volt DC, 0.6 Maximum Amp draw Air pump flow rate 8.7 LPM (0.3 CFM) open flow MACHINE DIMENSIONS T20 331475 (02-2007)

  • Page 27: Basic Troubleshooting

    T20 Basic Troubleshooting (Page 1 of 2) MACHINE TROUBLESHOOTING Problem Cause Remedy Trailing water--poor or no Scrub vacuum fan turned off Turn on vacuum fan water pickup Worn squeegee blades Rotate or replace squeegee blades Squeegee out of adjustment Adjust squeegee...
  • Page 28 T20 Basic Troubleshooting (Page 2 of 2) Problem Cause Remedy FaST System does not FaST button is turned off Turn on the FaST button operate Clogged FaST--PAK supply hose Soak connector and hose in warm and/or connector water and clean...
  • Page 29 * Call Technical Services if Diagnostic Time Exceeds One Hour With Unknown Cause or Course of Action NOTE: Troubleshooting charts may be shown with optional equipment. The optional equipment may not be specified in these charts. Some machines may not be equipped with all components shown. T20 331475 (02-2007)
  • Page 30 T20 Maintenance Information (Page 1 of 32) MAINTENANCE T20 331475 (02-2007)

  • Page 31: Maintenance Chart

    T20 Maintenance Information (Page 2 of 32) MAINTENANCE CHART No. of Lubricant/ Service Fluid Interval Description Procedure Points Daily Engine Check oil level Check coolant level in reservoir Check belt tension Hydraulic fluid reservoir Check fluid level HYDO 8, 9...
  • Page 32 Tennant or approved hydraulic fluid . . . Water and ethylene glycol anti-freeze, --34_ C (--30_ F) . . . Special lubricant, Lubriplate EMB grease (Tennant part number 01433--1) NOTE: More frequent maintenance intervals may be required in extremely dusty conditions. T20 331475 (02-2007)

  • Page 33: Lubrication

    T20 Maintenance Information (Page 4 of 32) SQUEEGEE CASTER BEARINGS LUBRICATION Lubricate the squeegee caster bearings after every 100 hours of operation. GAS/LPG ENGINE OIL Check the engine oil level daily. Change the oil and oil filter after every 100 hours of operation.
  • Page 34 T20 Maintenance Information (Page 5 of 32) TORQUE TUBES- -CYLINDRICAL BRUSHES TORQUE TUBES- -DISK BRUSHES Lubricate the torque tubes after every 200 hours Lubricate the three torque tube fittings after every of operation. The torque tube grease fittings on 200 hours of operation. The first two fittings are...

  • Page 35: Hydraulics

    Tennant hydraulic fluid is specially selected to level of hydraulic fluid in the reservoir. meet the needs of Tennant machines. There are Damage to the machine hydraulic system may two fluids available for different temperature result.

  • Page 36: Engine

    T20 Maintenance Information (Page 7 of 32) HYDRAULIC HOSES Check the hydraulic hoses after every 800 hours of operation for wear or damage. FOR SAFETY: When servicing machine, use cardboard to locate leaking hydraulic fluid under pressure. High pressure fluid escaping from a very small hole can almost be invisible, and can cause serious injuries.
  • Page 37 T20 Maintenance Information (Page 8 of 32) Location of drain cock on diesel machines. . AIR FILTER Replace the air filter after every 400 hours of operation. Check the radiator hoses and clamps after every 200 hours of operation. Tighten loose clamps.
  • Page 38 T20 Maintenance Information (Page 9 of 32) FUEL FILTER (Gasoline) FUEL LINES (DIESEL) Replace the gasoline fuel filter after every 800 Check the fuel lines every 50 hours of operation. hours of operation. If the clamp band is loose, apply oil to the screw of the band and securely tighten the band.

  • Page 39: Battery

    T20 Maintenance Information (Page 10 of 32) PRIMING THE DIESEL FUEL SYSTEM TIMING BELT Typical diesel fuel systems require priming to Check the timing belt after every 800 hours of remove pockets of air from the fuel lines and fuel operation.
  • Page 40 T20 Maintenance Information (Page 11 of 32) Refer to the table below for the relays and circuits NOTE: Always replace a fuse with a fuse of the controlled. same amperage. Extra 15 Amp fuses are provided inside the relay panel drawer on the...

  • Page 41: Scrub Brushes & Pads

    T20 Maintenance Information (Page 12 of 32) REPLACING DISK BRUSHES OR PAD DRIVER SCRUB BRUSHES AND PADS 1. Raise the scrub head. The machine can be equipped with either disk or FOR SAFETY: Before leaving or servicing cylindrical scrub brushes, or cleaning pads. Check...
  • Page 42 T20 Maintenance Information (Page 13 of 32) 4. Turn the brushes until the spring handles are REPLACING DISK PADS visible. 1. Remove the pad driver from the machine. 5. Squeeze the spring handles and let the 2. Squeeze the spring clip together to remove brushes drop to the floor.
  • Page 43 T20 Maintenance Information (Page 14 of 32) CHECKING THE DISK SCRUB HEAD STOP CYLINDERICAL BRUSHES BUMPERS Check the brush pattern and rotate the brushes from front-to-rear after every 50 hours of machine The disk scrub head stop bumpers keep the scrub...
  • Page 44 T20 Maintenance Information (Page 15 of 32) 3. Open the inner brush doors. 6. Install the new or rotated brushes by pushing down on the ends while sliding them onto the drive motor hubs. 4. Remove the brush idler plates.
  • Page 45 T20 Maintenance Information (Page 16 of 32) CHECKING CYLINDERICAL BRUSH PATTERN 7. If the brush patterns are tapered, see ADJUSTING THE CYLINDERICAL BRUSH 1. Apply chalk, or a similar marking material, to TAPER section of this manual. a smooth and level section of the floor.
  • Page 46 T20 Maintenance Information (Page 17 of 32) ADJUSTING THE CYLINDERICAL BRUSH ADJUSTING THE CYLINDERICAL BRUSH TAPER WIDTH 1. Loosen the four mounting bolts on the brush 1. Adjust the length of the drag links on both drive housing. sides of the scrub head. Lengthen the drag links to increase the rear brush pattern width.

  • Page 47: Side Brush

    T20 Maintenance Information (Page 18 of 32) SIDE BRUSH (OPTION) Check the side brush daily for wear or damage. Remove any tangled string or wire from the side brush or side brush drive hub. REPLACING THE SIDE BRUSH Replace the side brush when it no longer cleans effectively or when the remaining bristles are 19 mm (0.75 in) or less in length.

  • Page 48: Fast System

    T20 Maintenance Information (Page 19 of 32) 4. Remove the perforated knock outs from the FaST SYSTEM new FaST--PAK carton. Do Not remove the bag from the carton. Pull out the hose connector located on the bottom of the bag REPLACING THE FaST- -PAK CARTON and remove the hose cap from the connector.
  • Page 49 T20 Maintenance Information (Page 20 of 32) CLEANING THE FaST SUPPLY HOSE CLEANING THE FaST SYSTEM AIR PUMP CONNECTOR FILTER Soak the connector in warm water if detergent Remove and clean the air filter with compressed buildup is visible. When a FaST--PAK carton is not air after every 200 hours of FaST scrubbing.

  • Page 50: Squeegee Blades

    T20 Maintenance Information (Page 21 of 32) 6. Loosen the rear retaining band tension latch SQUEEGEE BLADES and open the retaining band. Check the squeegee blades for damage and wear daily. When the blades become worn, rotate the blades end--for--end or top--to--bottom to a new wiping edge.
  • Page 51 T20 Maintenance Information (Page 22 of 32) 8. Install the new rear squeegee blade or rotate 11. Loosen the front retaining band tension latch the existing blade to the new edge. Be sure all and open the retaining band. the holes in the squeegee blade are hooked onto the tabs.
  • Page 52 T20 Maintenance Information (Page 23 of 32) 14. Reinstall the front retaining band aligning the REPLACING OR ROTATING THE SIDE tabs with the notches. SQUEEGEE BLADES 1. If necessary, raise the scrub head. FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, and turn off machine.
  • Page 53 T20 Maintenance Information (Page 24 of 32) 5. Remove the side squeegee blade. If the outer 8. Hook the latch on the side squeegee retaining edge of the squeegee blade is not worn, band. rotate the squeegee blade with the blade from the other side of the machine.
  • Page 54 T20 Maintenance Information (Page 25 of 32) 3. Remove the clevis pin and squeegee retainer. LEVELING THE REAR SQUEEGEE Leveling the squeegee assures the entire length of the squeegee blade is in even contact with the surface being scrubbed. Perform this adjustment on an even and level floor.
  • Page 55 T20 Maintenance Information (Page 26 of 32) ADJUSTING THE REAR SQUEEGEE BLADE 3. To adjust the overall squeegee blade DEFLECTION deflection, turn the adjustment knobs counterclockwise to increase deflection or Deflection is the amount of curl the overall clockwise to decrease deflection.

  • Page 56: Skirts & Seals

    T20 Maintenance Information (Page 27 of 32) SOLUTION TANK SEALS SKIRTS AND SEALS Check each solution tank cover seal for damage and wear daily. SCRUB HEAD SKIRT Check the skirt for damage and wear after every 100 hours of operation.

  • Page 57: Brakes & Tires

    T20 Maintenance Information (Page 28 of 32) BRAKES AND TIRES PROPELLING MOTOR Torque the shaft nut to 508 Nm (375 ft lb) BRAKES lubricated, 644 Nm (475 ft lb) dry, after every 800 The mechanical brakes are located on the rear hours of operation.
  • Page 58 T20 Maintenance Information (Page 29 of 32) TRANSPORTING THE MACHINE PUSHING, TOWING, AND TRANSPORTING 1. Raise the squeegee, scrub head, and THE MACHINE brushes. NOTE: Empty the debris tray, the recovery tank, PUSHING OR TOWING THE MACHINE and the solution tank before transporting.
  • Page 59 T20 Maintenance Information (Page 30 of 32) 5. Position the machine as close to the front of 9. Route the tie--downs to the opposite ends of the trailer or truck as possible. the machine and hook them to the brackets on the floor of the trailer or truck.

  • Page 60: Machine Jacking

    FOR SAFETY: When servicing machine, block temperatures requires special procedures. machine tires before jacking machine up. Use Consult a TENNANT representative for more a hoist or jack that will support the weight of information. the machine. Jack machine up at designated locations only.

  • Page 61: Pinch Valve Adjustment

    T20 Maintenance Information (Page 32 of 32) Solution & Recovery Tanks Pinch Valve Adjustments Procedure to adjust Solution & Recovery Tank pinch valves: Place a 1/4” or 6 mm hex key wrench or drill bit approximately 1” (25 mm) from the LEVER side of the pinch valve bracket.
  • Page 62 T20 331475 (02-2007)

  • Page 63: Electrical

    * Call Technical Services if Diagnostic Time Exceeds One Hour With Unknown Cause or Course of Action NOTE: Troubleshooting charts may be shown with optional equipment. The optional equipment may not be specified in these charts. Some machines may not be equipped with all components shown. T20 331475 (02-2007)

  • Page 64: Electrical Schematic

    T20 Electrical Schematic (Page 1 of 7) 1029601 NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 65 T20 Electrical Schematic (Page 2 of 7) 1029601 NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 66 T20 Electrical Schematic (Page 3 of 7) 1029601 NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 67 T20 Electrical Schematic (Page 4 of 7) 1029601 NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 68 T20 Electrical Schematic (Page 5 of 7) 1029601 NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 69 T20 Electrical Schematic (Page 6 of 7) 1029601 NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 70 T20 Electrical Schematic (Page 7 of 7) NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)

  • Page 71: Wiring Harness Detail

    T20 Wiring Harness Detail (Page 1 of 14) Main Wire Harness NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 72 T20 Wiring Harness Detail (Page 2 of 14) Main Wire Harness NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 73 T20 Wiring Harness Detail (Page 3 of 14) Main Wire Harness NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 74 T20 Wiring Harness Detail (Page 4 of 14) Main Wire Harness NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 75 T20 Wiring Harness Detail (Page 5 of 14) Main Wire Harness NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 76 T20 Wiring Harness Detail (Page 6 of 14) Main Wire Harness NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 77 T20 Wiring Harness Detail (Page 7 of 14) Main Wire Harness NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 78 T20 Wiring Harness Detail (Page 8 of 14) Main Wire Harness NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)

  • Page 79: Headlight Wire Harness

    T20 Wiring Harness Detail (Page 9 of 14) Headlight Wire Harness NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 80 T20 Wiring Harness Detail (Page 10 of 14) NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 81 T20 Wiring Harness Detail (Page 11 of 14) NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 82 T20 Wiring Harness Detail (Page 12 of 14) GAS INJECTOR AUX. HARNESS L.P. DUAL SOL. AUX. HARNESS NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 83 T20 Wiring Harness Detail (Page 13 of 14) Ref. Serial Number Description Qty. (000000-- (000000-- Harness, Headlight [M20 And T20] (000000-- Harness, Eng [1.6l, Gm, E- -cntrl] Relay, 12vdc, 20a, Spdt (000000-- (000000-- Relay, 12vdc, 40a, Spdt (000000-- Fuse, 5 Amp, [Min- -5]...

  • Page 84: Fast Wire Harness

    T20 Wiring Harness Detail (Page 14 of 14) Fast Wire Harness Group 1019646 Ref. Serial Number Description Qty. (000000-- Harness [Fast, M20 And T20] NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)

  • Page 85: Electrical Symbols & Terms

    SW – Switch Example of Wiring Numbers & Colors: Wiring Color Codes (Unless otherwise marked) Right Most Digit Color of Wire of Wire Number Pink Brown Orange 1 RED 13 BLK Yellow Green Blue Purple Gray White T20 331475 (02-2007)

  • Page 86: Touch Panel Detail

    T20 Touch Panel Detail Fault indicator light Hour meter / fuel indicator / fault code indicator Supervisor control buttons Engine speed button Side brush button (option) Brush pressure increase button (+) Solution increase button (+) FaST button (option) Scrub vacuum fan / squeegee button...

  • Page 87: Touch Panel Led's

    T20 Touch Panel LED’s Detail Low Engine Speed Indicator High Engine Speed Indicator Fault/Condition Indicator Side Brush ON Indicator FaST System ON Indicator Scrubbing Vacuum Fan ON & Squeegee System ON Indicator 1-STEP Scrub ON Indicator Brush Pressure Indicators (1 LED=Low, 2 LED’s=Medium, 3 LED’s=High) Solution Volume Indicators (1 LED=Low, 2 LED’s=Medium, 3 LED’s=High)

  • Page 88: Option Components

    T20 Option Components The following chart lists various options and the electrical and/or hydraulic components that are associated with the option. Refer to the “notes” section for any components that are deleted from a standard machine in order to have the installed option.
  • Page 89 T20 Key Switch GLOW PLUG POSITION OFF POSITION (Diesel Only) Glow Glow Plug Plug Spring loaded- Returns START START to "OFF" unless held KEY SWITCH KEY SWITCH Glow Glow Plug Plug START START KEY SWITCH KEY SWITCH RUN POSITION START POSITION Spring loaded-Returns to “RUN"...

  • Page 90: Key Switch

    T20 Key OFF Power Distribution Conditions: Key off 12 VDC 13/BLK 1/RED ALTERNATOR 1/RED GREEN JUMPER WIRE 1/RED Touch Panel / Control Board 13/BLK PIN P2-33 13/BLK PIN P2-34 13/BLK PIN P2-35 KEY SWITCH STATIC GROUND PIN P1-23 FUSE 10...

  • Page 91: Key On Power Distribution

    T20 Key ON Power Distribution Conditions: Key on, engine off 12 VDC 13/BLK 1/RED ALTERNATOR 1/RED GREEN JUMPER WIRE 1/RED ALTERNATOR LAMP FUSE 1 13/BLK 13/BLK 15 AMP KEY SWITCH Touch Panel / TO FUSES Control Board AUX. 1 9 &12...

  • Page 92: Main Brushes On

    T20 Main Brushes ON Conditions: Key on, engine running, scrubbing system on, propel forward or reverse Maximum Amp Draw Readings BATTERY POSITIVE Component Max Amp Draw FROM AUX 1 SV-3 1.7 A RELAY CONTACTS SV-6 1.7 A Touch Panel / Control Board SV-7 1.7 A...

  • Page 93: Scrub Vacuum Fan On & Squeegees Down

    T20 Scrub Vacuum Fan ON & Squeegees DOWN Conditions: Key on, engine running, scrubbing system & scrub vacuum on, propel forward Maximum Amp Draw Readings Component Max Amp Draw SV-1 1.7 A BATTERY SV-4 1.7 A POSITIVE FROM AUX 1 SV-7 1.7 A...

  • Page 94: Side Brush On

    T20 Side Brush ON Conditions: Key on, engine running, scrubbing system on, side brush on, propel forward or reverse Maximum Amp Draw Readings Component Max Amp Draw BATTERY SV-7 1.7 A POSITIVE FROM AUX 1 SV-8 1.7 A RELAY CONTACTS SV-11 1.7 A...

  • Page 95: Tank Level Switches

    T20 Tank Level Switches BATTERY NEGATIVE Touch Panel / Control Board SOLUTION TANK EMPTY SWITCH 13/BLK PIN P1-11 S-19 OPEN = EMPTY CLOSED = NOT EMPTY SOLUTION TANK FULL SWITCH 13/BLK PIN P1-12 S-14 OPEN = NOT FULL CLOSED = FULL...

  • Page 96: Auto Fill Solenoids

    T20 Auto Fill Solenoids (ES equipped Machines Only) Conditions: Key on, water source connected to machine, solution tank NOT full, recovery tank less than half full Maximum Amp Draw Readings BATTERY Component Max Amp Draw BATTERY POSITIVE NEGATIVE FROM SOL-1 1.7 A...

  • Page 97: Detergent Pump & Es Pump

    T20 Conventional Detergent Pump & ES Pump Conditions: Key on, engine running, scrubbing system on, ES system on, recovery tank half full or more, solution tank not full, two or three solution LED’s lit Maximum Amp Draw Readings BATTERY BATTERY...

  • Page 98: Horn

    HORN SWITCH RELAY 13/BLK S-22 OPEN = HORN OFF CLOSED = HORN ON Wiring Color Codes (Unless otherwise marked) Right Most Digit Color of Wire of Wire Number Pink Brown Orange Yellow Green Blue Purple Gray White T20 331475 (02-2007)

  • Page 99: Forward Propel

    T20 Forward Propel Conditions: Key on, propel pedal pushed for forward travel BATTERY Touch Panel / Control Board NEGATIVE 1.9 VDC OR LOWER IN FORWARD 13/BLK PIN P1-1 SENSOR OUTPUT PROPEL 131/BLK-WHT PEDAL BATTERY POSITIVE FROM FUSE 5 POSITION DIGITAL...

  • Page 100: Reverse Propel

    T20 Reverse Propel Conditions: Key on, propel pedal pushed for reverse travel Maximum Amp Draw Readings BATTERY Component Max Amp Draw POSITIVE BATTERY FROM NEGATIVE 200 mA AUX 2 RELAY Touch Panel / Control Board CONTACTS FUSE 7 13/BLK PIN P2-17 15 AMP 2.8 VDC OR...
  • Page 101 T20 Shutdown Relay (Normal Machine Operation) (Gas/LPG) 12 VDC 13/BLK 1/RED Maximum Amp Draw Readings 1/RED Component Max Amp Draw 200 mA AUXILIARY RELAY FUSE 1 13/BLK KEY SWITCH 15 AMP TO FUSES 9 & 12 AUX. 1 RELAY CONTACTS...
  • Page 102 T20 Shutdown Relay (Normal Machine Operation) (Diesel) 12 VDC 13/BLK 1/RED Maximum Amp Draw Readings 1/RED Component Max Amp Draw 200 mA AUXILIARY RELAY FUSE 1 13/BLK KEY SWITCH 15 AMP TO FUSES 9 & 12 AUX. 1 RELAY CONTACTS...
  • Page 103 T20 Shutdown Relay (Shutdown Mode) (Gas/LPG) 12 VDC 13/BLK 1/RED Maximum Amp Draw Readings 1/RED Component Max Amp Draw 200 mA AUXILIARY RELAY FUSE 1 13/BLK KEY SWITCH 15 AMP TO FUSES 9 & 12 AUX. 1 RELAY CONTACTS 13/BLK...
  • Page 104 T20 Shutdown Relay (Shutdown Mode) (Diesel) 12 VDC 13/BLK 1/RED Maximum Amp Draw Readings 1/RED Component Max Amp Draw 200 mA AUXILIARY RELAY FUSE 1 13/BLK KEY SWITCH 15 AMP TO FUSES 9 & 12 AUX. 1 RELAY CONTACTS 13/BLK...
  • Page 105 T20 Starting System ON Conditions: Key turned to start position (Gas/LPG) 12 VDC 13/BLK 1/RED ENGINE 1/RED BLOCK ENGINE LT.BLUE/PINK HARNESS CONNECTOR STARTER MOTOR ENGINE J-11 ASSEMBLY 1/RED BLOCK PINK/BLK WHITE STARTER Refer to the Engine LOCKOUT Controller schematics RELAY...
  • Page 106 T20 Starting System ON Conditions: Key turned to start position (Diesel) 12 VDC 13/BLK 1/RED ENGINE 1/RED BLOCK STARTER MOTOR ASSEMBLY ENGINE 1/RED BLOCK ENGINE HARNESS STARTER CONNECTOR RELAY J-11 13/BLK 1/RED PIN 2 PIN 1 LOAD STARTER TIMER MODULE...
  • Page 107 T20 Glow Plugs ON Conditions: Key turned to start or glow plug position (Diesel) GLOW PLUGS Glow Plug START KEY SWITCH 1/RED TO START RELAY M7A 13/BLK TO FUSES GLOW PLUG LAMP 1, 9, & 12 KEY SWITCH GLOW PLUG...
  • Page 108 T20 Conventional Main & Side Brush Solution Valves Conditions: Key on, scrubbing system on, side brush on, forward or reverse propel, one or more solution LED’s lit Maximum Amp Draw Readings Component Max Amp Draw SOL-3 1.7 A BATTERY POSITIVE...

  • Page 109: Fast System On

    T20 FaST System ON Conditions: Key on, scrubbing system on, side brush on, forward or reverse propel, THREE solution LED’s lit BATTERY FaST High Flow Valve is POSITIVE FROM ON only when all 3 Touch Panel / Control Board AUX 2 Solution LED’s are lit...

  • Page 110: Fuel Level Sensors

    T20 Fuel Level Sensors Conditions: Key on BATTERY BATTERY NEGATIVE NEGATIVE Touch Panel / Control Board Touch Panel / Control Board GAS / FUEL DIESEL PRESSURE 13/BLK 13/BLK SWITCH FUEL LEVEL 131/BLK- 131/BLK- SENDER PIN P1-4 PIN P1-4 DIGITAL DIGITAL...

  • Page 111: Impact, Hydraulic Temperature, & Hydraulic Filter Sensors

    T20 Impact, Hydraulic Temperature, & Hydraulic Filter Sensors BATTERY NEGATIVE Touch Panel / Control Board HYDRAULIC FILTER CLOGGED SWITCH 13/BLK PIN P1-15 S-17 OPEN = LESS THAN 20 PSI (FILTER OK) CLOSED = MORE THAN 20 PSI (FILTER CLOGGED) HYDRAULIC OIL...
  • Page 112 T20 Engine Oil Pressure, Temperature, & MIL Systems (Gas/LPG) BATTERY POSITIVE Engine Oil Pressure FROM AUX 1 RELAY CONTACTS Touch Panel / Control Board FUSE 5 Refer to the Engine J-12 PIN P2-27 Controller schematics 15 AMP LOW ENGINE OIL OIL PRESSURE LT.BLUE/WHITE...
  • Page 113 T20 Engine Oil Pressure & Temperature Systems (Diesel) Engine Oil Pressure Switch This drawing is shown with key switch ON, and engine running BATTERY TO FUEL PUMP BATTERY POSITIVE RELAY M10 NEGATIVE FROM AUX 1 RELAY CONTACTS Touch Panel /...
  • Page 114 T20 Fuel Pump & Engine Speed Control (Gas/LPG) Fuel Pump (Gasoline Only) This drawing is shown with key switch ON, and engine running J-10 PINK/YEL FROM FUSE 4 OF ENGINE HARNESS Refer to the Engine Controller schematics BLACK 13/BLK FROM CHASSIS GROUND...
  • Page 115 T20 Fuel Pump (Diesel) BATTERY This drawing is shown with key NEGATIVE switch ON, and engine running FUEL PUMP M10C J-11 BATTERY 13/BLK POSITIVE WHILE CRANKING FROM START RELAY M7B SWITCHED BATTERY POSITIVE FROM SHUTDOWN RELAY M6C M10B FUEL PUMP...
  • Page 116 T20 Engine Speed Control (Diesel) J-12 Touch Panel / Control Board PIN P2-24 BATTERY Governor Speed “ ” NEGATIVE ENGINE HARNESS CONNECTORS PIN P2-25 NO CONNECTION Governor Speed “ ” J-10 13/BLK 13/BLK Low Engine High Engine ENGINE Speed Speed...

  • Page 117: Enable/Disable Chart

    T20 Enable/Disable Chart T20 331475 (02-2007)

  • Page 118: Control Board Connectors

    T20 Control Board Connectors Connector goes to socket # wire # color type P1-1 pink input Forward/Reverse Propel Sensor P1-2 black input Unswitched Battery Negative P1-3 empty P1-4 input S-7 or S-8 Fuel Level Sensor or LPG Pressure Switch P1-5...

  • Page 119: Fault Indicators

    T20 Fault Indicators The following table describes fault codes communicated to the operator. A fault code is indicated by blinking a Fault LED (red), sounding an alarm, and also by displaying the fault name on the LCD. Faults can be cleared when they are no longer present and one of the action buttons (i.e.

  • Page 120: Condition & Warning Indicators

    T20 Condition & Warning Indicators The following table describes displayed conditions or warnings. If a condition is sensed, the condition or warning code will be displayed on the LCD. Conditions are typically caused by activating buttons that are unavailable. For example: the Sweep vacuum fan is unavailable when the scrub functions are active.
  • Page 121 T20 Configuration Modes (Page 1 of 3) Configuration modes are designed for use by a technician for setup purposes. To enter Configuration Mode: Press “4/5” and Side-Brush buttons simultaneously. While holding the “4/5” and Side-Brush buttons, turn the ignition key switch to the “RUN”...
  • Page 122 T20 Configuration Modes (Page 2 of 3) To enter Configuration Mode: Press “4/5” and Side-Brush buttons simultaneously. While holding the “4/5” and Side-Brush buttons, turn the ignition key switch to the “RUN” position. Continue holding the “4/5” and Side-Brush buttons until “CONFIG MODE” is displayed on the screen, then release the buttons.
  • Page 123 T20 Configuration Modes (Page 3 of 3) To enter Configuration Mode: Press “4/5” and Side-Brush buttons simultaneously. While holding the “4/5” and Side-Brush buttons, turn the ignition key switch to the “RUN” position. Continue holding the “4/5” and Side-Brush buttons until “CONFIG MODE” is displayed on the screen, then release the buttons.

  • Page 124: Diagnostic Modes

    T20 Diagnostic Modes To enter Configuration Mode: Press “4/5” and Side-Brush buttons simultaneously. While holding the “4/5” and Side-Brush buttons, turn the ignition key switch to the “RUN” position. Continue holding the “4/5” and Side-Brush buttons until “CONFIG MODE” is displayed on the screen, then release the buttons.
  • Page 125 * Maintain Normal Main Brush Pressure as Listed in Operator's Manual NOTE: Troubleshooting charts may be shown with optional equipment. The optional equipment is not specified in these charts. Some machines may not be equipped with all components shown. T20 331475 (02-2007)
  • Page 126 T20 Hydraulic Schematic SV3 & SV6 TIED TOGETHER Scrub Valve Main Scrub Lift (SPRING Tube 0.031 LH Side Tubes RH Side 0.031 Rear Side & Rear 0.046 Squeegee Tube 0.055 Main Tube 4.5 cir, 400 rpm Tube Side Valve SV8 & SV11 TIED TOGETHER 0.040...

  • Page 127: Steering And Propel

    T20 Hydraulic Hose, Pump & Valve Drawings (Page 1 of 21) Hydraulic Hose Group, Steering and Propel Ref. Serial Number Description Qty. (000000-- Hose, Hyd, Tc08, Jf08e45/Jf08str, 96.0 (000000-- Hose, Hyd, Tc06, Jf06e90/Jf06str, 104.0 (000000-- Hose, Hyd, Tc06, Jf06e90/Jf06str, 040.0 (000000-- Hose, Hyd, Spcl, Jf10e45/Jf10str, 58.0...

  • Page 128: Pumps And Vacuum Fan

    T20 Hydraulic Hose, Pump & Valve Drawings (Page 2 of 21) Hydraulic Hose Group, Pumps and Vacuum Fan NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 129 T20 Hydraulic Hose, Pump & Valve Drawings (Page 3 of 21) 354401 Hydraulic Hose Group, Pump and Vacuum Fans Ref. Serial Number Description Qty. (000000-- Hose, Hyd, Tc08, Jf08e90/Jf08str, 046.0 (000000-- Hose, Hyd, Med08, Jf08e90/Jf08str, 062.0 (000000-- Hose, Hyd, Med06, Jf06str/Jf06str, 033.0 Hose, Hyd, Tc08, Jf08str/Jf08e90, 031.0...

  • Page 130: Cylindrical Brush

    T20 Hydraulic Hose, Pump & Valve Drawings (Page 4 of 21) Hydraulic Hose Group, Cylindrical Brush NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 131 T20 Hydraulic Hose, Pump & Valve Drawings (Page 5 of 21) 354402 Hydraulic Hose Group , Cylindrical Brush Ref. Serial Number Description Qty. (000000-- Hose, Hyd, Tc06, Jf06str /Jf06e45, 54.0 (000000-- Hose, Hyd, Tc08, Jf08str/Jf08str, 48.0 (000000-- Hose, Hyd, Tc 06, Jf06str /Jf06e45, 56.0 (000000-- Hose, Hyd, Med04, Jf04e90/Jf04str, 016.0...

  • Page 132: Disk Brush

    T20 Hydraulic Hose, Pump & Valve Drawings (Page 6 of 21) Hydraulic Hose Group, Disk Brush Scrub Valve Reservoir Brush LIft Cylinder Main Brush Motor (Right) Main Brush Motor (Center) Main Brush Motor (Left) NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information...
  • Page 133 T20 Hydraulic Hose, Pump & Valve Drawings (Page 7 of 21) 354403 Hydraulic Hose Group , Disk Brush Ref. Serial Number Description Qty. (000000-- Hose, Hyd, Tc06, Jf06str /Jf06e45, 54.0 (000000-- Hose, Hyd, Tc 06, Jf06str /Jf06e45, 56.0 (000000-- Hose, Hyd, Tc08, Jf08e45/Jf08str, 052.0 (000000-- Hose, Hyd, Med08, Jf08e45/Jf08str, 046.0...

  • Page 134: Squeegee Lift

    T20 Hydraulic Hose, Pump & Valve Drawings (Page 8 of 21) Hydraulic Hose Group, Squeegee Lift NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 135 T20 Hydraulic Hose, Pump & Valve Drawings (Page 9 of 21) 354391 Hydraulic Hose Group, Squeegee Lift Ref. Serial Number Description Qty. (000000-- Hose, Hyd, Tc04, Jf04e90/Jf04str, 42.0l (000000-- Hose, Hyd, Tc04, Jf04e90/Jf04str, 46.0l (000000-- Hose, Hyd,Tc 04, Jf04str /Jf04e45 , 35.0 (000000-- Hose, Hyd, Tc04, Jf04e45/Qm06, 28.0...

  • Page 136: Pumps Group

    T20 Hydraulic Hose, Pump & Valve Drawings (Page 10 of 21) Hydraulic Pumps Group NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 137 T20 Hydraulic Hose, Pump & Valve Drawings (Page 11 of 21) 1017697 Hydraulic Pumps Group Ref. Serial Number Description Qty. (000000-- Pump, Hyd, Piston, Var, 1.24 4000, Cw (See Breakdown) (000000-- Fitting, Hyd, E90, Jm08/Om08 (000000-- Fitting, Hyd, Str, Jm08/Om08...

  • Page 138: Cooler And Tubes Group

    T20 Hydraulic Hose, Pump & Valve Drawings (Page 12 of 21) Hydraulic Cooler and Tubes Group NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 139 T20 Hydraulic Hose, Pump & Valve Drawings (Page 13 of 21) 1017692 Hydraulic Cooler and Tubes Group Ref. Serial Number Description Qty. (000000-- Cooler, Hyd, 25gpm 325btu Of12 13x12x2 (000000-- Fitting, Hyd, E90, Jm12/Om12 (000000-- Fitting, Hyd, E90, Jm12/Om12, L...

  • Page 140: Reservoir Group

    T20 Hydraulic Hose, Pump & Valve Drawings (Page 14 of 21) Hydraulic Reservoir Group NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 141 T20 Hydraulic Hose, Pump & Valve Drawings (Page 15 of 21) 1017692 Hydraulic Reservoir Group Ref. Serial Number Description Qty. (000000-- Reservoir, Hyd, 10.0Gal, Replmt (000000-- Cap, Breather, Hyd, 2.4 Ds (000000-- Gauge, Sensing, Level (000000-- Fitting, Hyd, Str, Jm06/Om06...
  • Page 142 T20 Hydraulic Hose, Pump & Valve Drawings (Page 16 of 21) Hydraulic Valves Group NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 143 T20 Hydraulic Hose, Pump & Valve Drawings (Page 17 of 21) 1017692 Hydraulic Valves Group Ref. Serial Number Description Qty. (000000-- Fitting, Hyd, E90, Jm04/Om04 (000000-- Valve, Cntrl, Hyd (See Breakdowns) (000000-- Screw, Hex, M8 X 1.25 X 20, Ss (000000-- Washer, Flat, 0.32b 1.00d .12, Ss...
  • Page 144 T20 Hydraulic Hose, Pump & Valve Drawings (Page 18 of 21) Side Brush Hydraulic Valve Group NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 145 (Page 19 of 21) 1017708 Side Brush Hydraulic Valve Group Ref. Serial Number Description Qty. (000000-- Valve, Cntrl, Hyd [M20 And T20] (See Breakdown) (000000-- Fitting, Hyd, Str, Jm06/Om06 (000000-- Fitting, Hyd, Str, Jm04/Om06 (000000-- Fitting, Hyd, E45, Jm04/Om04 (000000--...
  • Page 146 T20 Hydraulic Hose, Pump & Valve Drawings (Page 20 of 21) Side Brush Hydraulic Hose Group NOTE: Refer to the current Operators or Parts Manual for the most up-to-date information T20 331475 (02-2007)
  • Page 147 T20 Hydraulic Hose, Pump & Valve Drawings (Page 21 of 21) 1017708 Side Brush Hydraulic Hose Group Ref. Serial Number Description Qty. (000000-- Hose, Hyd, Med06, Jf06e90l/Jf06str,038.0 (000000-- Hose, Hyd, Tc06, Jf06str/Jf06str, 033.0 (000000-- Hose, Hyd, Tc04, Jf04str /Jf04str, 39.0 (000000-- Hose, Hyd, Tc08, Jf08e90/Jf08str, 034.0...

  • Page 148: Hydraulic Solenoid Valve Details

    T20 Hydraulic Solenoid Valve Details *PWM* SV10 *PWM* SV11 SV12 T20 331475 (02-2007)

  • Page 149: General Information

    T20 General Information (Page 1 of 2) Commonly Used Hydraulic Symbols Pressure / Flow Line Suction Line Return or Low Pressure Line Active Pilot Port Line Component Lines Connected Lines Not Inactive Pilot Port Line is Energized Together Assembly Connected...

  • Page 150: Pump Flow Rates

    T20 General Information (Page 2 of 2) T20 Hydraulic Pump Flow Rates (typical) PROPEL PUMP ACCESSORY PUMPS ENGINE @ 12.5 GPM 10 GPM 6 GPM 4 GPM 2400 RPM (47.3 LPM) (37.9 LPM) (22.7 LPM) (15.1 LPM) maximum PUMP PUMP...

  • Page 151: Operating Matrix

    T20 Operating Matrix T20 331475 (02-2007)

  • Page 152: Option Components

    T20 Option Components The following chart lists various options and the electrical and/or hydraulic components that are associated with the option. Refer to the “notes” section for any components that are deleted from a standard machine in order to have the installed option.

  • Page 153: Scrub Head Lower

    T20 Scrub Head Lower Engine speed: 2400 RPM Pressure / Flow Line Suction Line Gray items are Return or Low Pressure Line SCRUB MANIFOLD energized Active Pilot Port Line Inactive Pilot Port Line or activated Case Drain Line Typical Default...

  • Page 154: Scrub Head Lift

    T20 Scrub Head Lift Engine speed: 2400 RPM Pressure / Flow Line Suction Line Gray items are Return or Low Pressure Line SCRUB MANIFOLD energized Active Pilot Port Line Inactive Pilot Port Line or activated Case Drain Line 2500 PSI (172.4 BAR)

  • Page 155: Squeegees Lower

    T20 Squeegees Lower Engine speed: 2400 RPM Pressure / Flow Line Suction Line Gray items are Return or Low Pressure Line SCRUB MANIFOLD energized Active Pilot Port Line Inactive Pilot Port Line or activated Case Drain Line 2500 PSI (172.4 BAR) ORIFICE 0.046 in...

  • Page 156: Squeegees Lift

    T20 Squeegees Lift Engine speed: 2400 RPM Pressure / Flow Line Suction Line Gray items are Return or Low Pressure Line SCRUB MANIFOLD energized Active Pilot Port Line Inactive Pilot Port Line or activated Case Drain Line 2500 PSI (172.4 BAR) ORIFICE 0.046 in...

  • Page 157: Main Brushes On (Cylindrical Only)

    T20 Main Brushes ON (Cylindrical Only) Engine speed: 2400 RPM Pressure / Flow Line Suction Line Gray items are Return or Low Pressure Line SCRUB MANIFOLD energized Active Pilot Port Line Inactive Pilot Port Line or activated Case Drain Line 2500 PSI (172.4 BAR)

  • Page 158: Main Brushes On (Disk Only)

    T20 Main Brushes ON (Disk Only) Engine speed: 2400 RPM Pressure / Flow Line Suction Line Gray items are Return or Low Pressure Line SCRUB MANIFOLD energized Active Pilot Port Line Inactive Pilot Port Line or activated Case Drain Line 2500 PSI (172.4 BAR)

  • Page 159: Side Brush On

    T20 Side Brush ON Engine speed: 2400 RPM Pressure / Flow Line Gray items are Suction Line SCRUB MANIFOLD Return or Low Pressure Line energized Active Pilot Port Line or activated Inactive Pilot Port Line Case Drain Line 2500 PSI (172.4 BAR)

  • Page 160: Scrub Vacuum Fan On

    T20 Scrub Vacuum Fan ON Engine speed: 2400 RPM Pressure / Flow Line Gray items are Suction Line SCRUB MANIFOLD Return or Low Pressure Line energized Active Pilot Port Line or activated Inactive Pilot Port Line Case Drain Line 2500 PSI (172.4 BAR)

  • Page 161: Scrub Vacuum Fan & Side Brush On

    T20 Scrub Vacuum Fan & Side Brush ON Engine speed: 2400 RPM Pressure / Flow Line Gray items are Suction Line SCRUB MANIFOLD Return or Low Pressure Line energized Active Pilot Port Line or activated Inactive Pilot Port Line Case Drain Line 2500 PSI (172.4 BAR)

  • Page 162: Side Brush Lower

    T20 Side Brush Lower Engine speed: 2400 RPM Pressure / Flow Line Suction Line SCRUB MANIFOLD Gray items are Return or Low Pressure Line energized Active Pilot Port Line Inactive Pilot Port Line or activated Case Drain Line Typical Default...

  • Page 163: Side Brush Lift

    T20 Side Brush Lift Engine speed: 2400 RPM Pressure / Flow Line Suction Line SCRUB MANIFOLD Gray items are Return or Low Pressure Line energized Active Pilot Port Line Inactive Pilot Port Line or activated Case Drain Line 2500 PSI (172.4 BAR)

  • Page 164: Side Brush Extend

    T20 Side Brush Extend Engine speed: 2400 RPM Pressure / Flow Line Suction Line SCRUB MANIFOLD Gray items are Return or Low Pressure Line energized Active Pilot Port Line Inactive Pilot Port Line or activated Case Drain Line 2500 PSI (172.4 BAR)

  • Page 165: Side Brush Retract

    T20 Side Brush Retract Engine speed: 2400 RPM Pressure / Flow Line Suction Line SCRUB MANIFOLD Gray items are Return or Low Pressure Line energized Active Pilot Port Line Inactive Pilot Port Line or activated Case Drain Line 2500 PSI (172.4 BAR)
  • Page 166 T20 331475 (02-2007)

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