Tennant 8400D Operator's Manual
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Tennant 8400D Operator's Manual

Tennant 8400D Operator's Manual

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8400D
Operator Manual
MM312

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  • Page 1 8400D Operator Manual MM312...
  • Page 2 This manual is furnished with each new TENNANT Model 8400D. It provides necessary operating and preventive maintenance instructions. Read this manual completely and understand the machine before operating or servicing it. This machine will provide excellent service. However, the best results will be obtained at minimum costs if: D The machine is operated with reasonable care.

  • Page 3: Table Of Contents

    ..... . THERMO SENTRYt ....8400D MM312 (4- -96)
  • Page 4 ....INDEX ........8400D MM312 (4- -96)

  • Page 5: Safety Precautions

    – Use cardboard to locate leaking – Check brakes and steering for proper hydraulic fluid under pressure. operation. – Use Tennant supplied or approved replacement parts. 3. When starting machine: – Keep foot on brake and directional pedal in neutral.
  • Page 6 WARNING: Hot bumper. Keep away. CALIFORNIA PROPOSITION 65 WARNING: Engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. 8400D MM312 (4–96)
  • Page 7 SIDE PANEL OF THE OPERATOR COMPARTMENT. 09078 HOPPER SUPPORT BAR LABEL – LOCATED FLAMMABLE SPILLS LABEL – LOCATED ON ON THE HOPPER SUPPORT BAR AND ON THE SIDE PANEL OF THE OPERATOR BOTH HOPPER LIFT ARMS. COMPARTMENT. 8400D MM312 (2–94)
  • Page 8 STRONG VACUUM LABEL – LOCATED ON ON THE SOLUTION TANK COVER. THE VACUUM FAN HOUSING. 09078 HOPPER LIFT ARMS LABEL – LOCATED ON HOT BUMPER LABEL – LOCATED ON THE BOTH HOPPER LIFT ARMS. REAR LEFT PANEL. 8400D MM312 (2–94)

  • Page 9: Operation

    - Check the machine for shipping damage. 07324 Check to make sure machine is complete per shipping instructions. - Check the hydraulic fluid level in the hydraulic reservoir. - Check the engine oil level. 8400D MM312 (12–94)
  • Page 10 We recommend taking advantage of a regularly scheduled service contract from your Tennant representative. - Order parts and supplies directly from your authorized Tennant representative. Use the parts manual provided when ordering parts. 8400D MM312 (12–94)

  • Page 11: Machine Components

    H. Side Squeegee B. Steering Wheel Sweeping Brush Access Door C. Operator Seat Side Brush D. Demister Cover K. Hopper Cover E. Engine Side Door Recovery Tank F. Rear Squeegee M. Recovery Tank Cover G. Solution Tank 8400D MM312 (2–94)

  • Page 12: Control Panel Symbols

    Rear Squeegee Down and Vacuum On Main Brush Down and II Speedt Horn Charging System Main Brush Down Pressure Light Filter Clogged Main Brush Down Pressure Heavy Recovery Tank Full Steering Tilt Engine Oil Pressure Parking Brake 8400D MM312 (2–94)
  • Page 13 Circuit Breaker 8 Circuit Breaker 9 Side Brush Down Pressure Light Variable Flow Side Brush Down Pressure Heavy Variable Pressure Circuit Breaker 1 Diesel Fuel Only Circuit Breaker 2 Hydraulic Fluid Only Circuit Breaker 3 Jackpoint Circuit Breaker 4 8400D MM312 (2–94)

  • Page 14: Controls And Instruments

    O. Engine Oil Pressure Light GG. Main Brush Down Pressure Knob P. Engine Water Temperature Light HH. Scrub Brush Down Pressure Knob Q. Hopper Temperature Light – Solution Flow Lever Thermo Sentryt JJ. Parking Brake Pedal R. Clogged Filter Light 8400D MM312 (4–96)

  • Page 15: Operation Of Controls

    07790 Reverse: Press the bottom of the directional pedal with the heel of your foot. 07791 Neutral: Take your foot off the directional pedal and it will return to the neutral position. 07792 8400D MM312 (2–94)

  • Page 16: Brake Pedal

    FOR SAFETY: Before leaving or servicing machine; stop on level surface, set parking brake, turn off machine and remove key. Release: Press on the brake pedal to unlock the parking brake pedal. 8400D MM312 (4–96)

  • Page 17: Hazard Light Switch (Option)

    The indicator light above the switch will come on. Hold: Release the hopper raise switch. WARNING: Raised hopper may fall. engage hopper support bar. NOTE: The main brush, side brush, and vacuum fan will stop operating when the hopper is raised. 09295 8400D MM312 (4–96)

  • Page 18: Hopper Door Switch

    Stop: Press the switch. The indicator light above the switch will go off. NOTE: The vacuum fan operates automatically when the main brush starts operating. NOTE: The vacuum fan will not operate unless 09545 the main brush is operating. 8400D MM312 (4–96)

  • Page 19: Main Brush Normal Speed Switch

    CHARGING SYSTEM LIGHT The charging system light comes on when the existing voltage potential of the battery is not within normal range; 10 to 14 Volts. Stop operating the machine. Locate the problem and have it corrected. 09222 8400D MM312 (2–94)

  • Page 20: Engine Oil Pressure Light

    To clean the filter, press the filter shaker switch. If the clogged filter light remains lit, manually clean the hopper dust filter. See HOPPER DUST FILTER in MAINTENANCE. 09223 8400D MM312 (2–94)

  • Page 21: Recovery Tank Full Light

    On: Press the ESt switch. The indicator light above the switch will come on. Off: Press the ESt switch. The indicator light above the switch goes off. 09731 8400D MM312 (2–94)

  • Page 22: Detergent Flow Switch (Option)

    NOTE: If the II Speedt is operating when the scrub brushes are started, the machine will automatically change to main brush normal speed. NOTE: The scrub head will raise when the machine is reversed, or stopped for a short time. 8400D MM312 (2–94)

  • Page 23: Squeegee And Vacuum Fan Switch

    STEERING WHEEL The steering wheel controls the machine’s direction. The machine is very responsive to the steering wheel movements. Left: Turn the steering wheel to the left. Right: Turn the steering wheel to the right. 07801 8400D MM312 (2–94)

  • Page 24: Horn Button

    Release the key as soon as the engine starts. Stop: Turn the key counter-clockwise. TURN SIGNAL SWITCH (OPTION) The turn signal switch operates the turn signals. Right: Push the switch lever forward. Left: Pull the switch lever back. Flashers: Pull out the knob. 06745 8400D MM312 (12–94)

  • Page 25: Steering Column Tilt Lever

    CB-2 15 A Filter shaker, vacuum fan CB-3 15 A Operating lights CB-4 15 A Scrubbing CB-5 15 A Horn CB-6 10 A Instrument panel CB-7 15 A Sweeping CB-8 15 A Hazard light CB-9 15 A 8400D MM312 (4–96)

  • Page 26: Main Brush Down Pressure Knob

    SIDE BRUSH DOWN PRESSURE KNOB The side brush down pressure knob changes the side brush contact with the sweeping surface. Heavy: Turn the side brush down pressure knob counter-clockwise. Light: Turn the side brush down pressure knob clockwise. 8400D MM312 (12–94)

  • Page 27: Solution Flow Lever

    Open the recovery tank cover: Push in the cover latch. THROTTLE LEVER The throttle lever controls the engine speed. Fast: Push the lever into the Fast position. Idle: Move the lever into the Idle position. Off: Pull the lever into the Off position. 8400D MM312 (12–94)

  • Page 28: Fuse

    Never substitute higher valve fuses than specified. The fuse is located in the operator compartment. Remove the circuit breaker panel to gain access to the fuse. Fuse Rating Circuit Protected FU-1 40 A Glow plugs 8400D MM312 (4–96)

  • Page 29: Operator Seat

    DO NOT rely on the machine hydraulic system to keep the hopper raised. WARNING: Raised hopper may fall. Engage hopper support bar. 07803 8400D MM312 (2–94)

  • Page 30: How The Machine Works

    If using the ESt system, drain and clean the solution tank, and clean the ESt filter. PRE-OPERATION CHECKLIST - Check under the machine for leaks (fuel, oil, coolant, scrubbing solution). 07807 8400D MM312 (2–94)
  • Page 31 OPERATION - Check the engine air filter indicator. - Check the engine oil level. - Check fuel level. 07764 - Check the brakes and steering for proper operation. 07754 8400D MM312 (12–94)
  • Page 32 OPERATION - Check the rear squeegee for wear and proper deflection. Check the side squeegees for wear. 8400D MM312 (2–94)

  • Page 33: Starting The Machine

    NOTE: Do not operate the starter motor for more than 10 seconds at a time or after the engine has started. Allow the starter to cool between starting attempt or damage to the starter motor may occur. 8400D MM312 (4–96)
  • Page 34 Consult with your regulatory authorities for exposure limits. Keep engine properly tuned. 6. Release the machine parking brake. 7. Move the throttle lever to the Fast position. 8. Drive the machine to the area to be cleaned. 8400D MM312 (4–96)

  • Page 35: Sweeping, Scrubbing, And Brush Information

    Polypropylene 8-double Row Main Brush – Superior pick-up of sand, gravel, and paper litter. Polypropylene retains its stiffness when wet, and can be used indoors or out with equal 08002 performance. Not recommended for high-temperature debris. 8400D MM312 (2–94)
  • Page 36 Non-scuff Polypropylene Scrub Brush – This brush uses a softer, general purpose poly bristle to lift lightly compacted soilage, without scuffing high-gloss coated floors. Nylon Scrub Brush – Recommended for scrubbing coated floors. Cleans without scuffing. 8400D MM312 (2–94)

  • Page 37: Sweeping

    Maintains a high gloss. Use to buff very soft finishes and lower traffic areas, or use for polishing soft waxes on wood floors. SWEEPING 1. Start the engine. 2. Move the throttle lever to the Fast position. 8400D MM312 (2–94)

  • Page 38: Stop Sweeping

    The side brush will automatically stop and raise, the sweeping vacuum will stop, and the hopper door will close. 09564 2. Press the filter shaker switch to shake the hopper dust filter. 09567 8400D MM312 (2–94)

  • Page 39: Emptying The Hopper

    The indicator light above the switch goes out. 6. Slowly back the machine away from the debris site or debris container. FOR SAFETY: When using machine, use care when reversing machine. 09570 8400D MM312 (12–94)

  • Page 40: Filling The Tanks

    7. Press and hold the hopper down switch to lower the hopper. 09571 FILLING THE TANKS 1. Start the engine. 2. Drive the machine to the filling site. 3. Stop the solution flow. 4. Shut the engine off. 5. Set the parking brake. 8400D MM312 (2–94)
  • Page 41 For specific recommendations, contact your TENNANT representative. ESt mode: Connect a hose from the water source to the auto-fill connections on the machine.

  • Page 42: Scrubbing

    The rear squeegee will automatically lower and the scrubbing vacuum will start. For the ESt option, the ESt system and detergent pump at one-half flow will automatically start. 09736 4. Move the solution lever forward. 8400D MM312 (4–96)
  • Page 43 Press the detergent switch so that both indicator lights are off. 09737 09738 5. Drive the machine forward and scrub as required. 6. Adjust the solution flow to the floor as needed. 7. Adjust brush pressure for cleaning application. 8400D MM312 (4–96)

  • Page 44: Double Scrubbing

    2. Press the scrub brush switch to raise and stop the scrub brushes. The rear squeegee will automatically raise and the scrubbing vacuum will stop. The detergent pump will stop for the ESt system, but the ESt pump will remain on. 09739 8400D MM312 (4–96)

  • Page 45: Draining And Cleaning The Tanks

    4. Set the parking brake. 5. Flush out demister cover with clean water. NOTE: The water must not be hotter than 55_ C (130_ F), or tank damage may occur. Do not use steam to clean the tank. 8400D MM312 (4–96)
  • Page 46 NOTE: The water must not be hotter than 55_ C (130_ F), or tank damage may occur. Do not use steam to clean the tank. 13. Lower the recovery tank cover and demister cover. 14. Replace the drain hoses and drain caps. 8400D MM312 (2–94)

  • Page 47: Stop The Machine

    OPERATION STOP THE MACHINE 1. Stop sweeping and scrubbing. 2. Take your foot off the directional pedal. Step on the brake pedal. 07754 3. Set the machine parking brake. 4. Move the throttle lever to the position. 8400D MM312 (4–96)
  • Page 48 OPERATION 5. Turn the ignition switch key counter-clockwise to stop the engine. Remove the switch key. FOR SAFETY: Before leaving or servicing machine; stop on level surface, set parking brake, turn off machine and remove key. 8400D MM312 (2–94)

  • Page 49: Post-Operation Checklist

    - Check the squeegees for wear or damage. - Drain and clean the recovery tank. - ESt mode: Drain and clean the solution tank. Clean the ESt filter. - Check the vacuum hoses for debris or obstructions. 8400D MM312 (2–94)
  • Page 50 OPERATION - Check for fuel odor that indicates a fuel leak. - Check under the machine for leak spots (fuel, oil, coolant). - Check the service records to determine maintenance requirements. 07807 8400D MM312 (2–94)

  • Page 51: Engaging Hopper Support Bar

    2. Start the engine. 3. Raise the hopper all the way up. 09569 4. Lift and position the hopper support bar under the hopper lift arm. WARNING: Raised hopper may fall. Engage hopper support bar. 08003 8400D MM312 (4–96)

  • Page 52: Disengaging Hopper Support Bar

    6. Shut the engine off. DISENGAGING HOPPER SUPPORT BAR 1. Start the engine. FOR SAFETY: When starting machine, keep foot on brake and directional pedal in neutral. 2. Raise the hopper slightly to release the hopper support bar. 09569 8400D MM312 (12–94)

  • Page 53: Operation On Inclines

    OPERATION ON INCLINES Drive the machine slowly on inclines. Use the brake pedal to control machine speed on descending inclines. The maximum rated incline is 8_. FOR SAFETY: When using machine, go slow on inclines and slippery surfaces. 8400D MM312 (12–94)

  • Page 54: Options

    2. Lower the squeegee and shut the engine off. 09735 3. Set the machine parking brake. FOR SAFETY: Before leaving or servicing machine; stop on level surface, set parking brake, turn off machine and remove key. 8400D MM312 (4–96)
  • Page 55 5. Put together the wand and the wand hose. 6. Start the engine. 7. Move the throttle lever to the Fast position. 8. Lower the squeegee to turn the vacuum system on. 09735 8400D MM312 (2–94)
  • Page 56 9. Vacuum the floor. 10. Shut the engine off. 11. Remove the vacuum hose from the squeegee suction hose and connect the squeegee suction hose to the rear squeegee. 12. Put the vacuum wand and hose in the mounting clips. 8400D MM312 (2–94)

  • Page 57: Tie-Downs

    The rear tie-down is located on both sides of the tail light bracket under the rear bumper. When transporting the machine on a trailer or in a truck, be sure to set the parking brake and block the tires to prevent the machine from rolling. 08151 8400D MM312 (2–94)

  • Page 58: Machine Troubleshooting

    Main brush drive failure Contact TENNANT service personnel Side brush drive failure Contact TENNANT service personnel Hopper full Empty hopper Hopper lip skirts worn or damaged Replace lip skirts Wrong sweeping brush Contact TENNANT representative for recommendations 8400D MM312 (2–94)
  • Page 59 Replace scrub brushes. ESt system does not fill Clogged solution pump or lines. Flush ESt system. solution tank. ESt float stuck. Clean floats of debris. Clogged ESt pump filter. Clean filter. Water levels too low in tanks. Add water. 8400D MM312 (2–94)

  • Page 60: Maintenance

    Recovery tank, ESt mode Clean ESt filter – Solution tank, ESt mode Clean – 50 Hours Main brush Rotate end-for-end – Fuel pipes and clamps Check for tightness and wear – Engine crankcase Change oil and filter Rear squeegee casters Lubricate 8400D MM312 (4–96)
  • Page 61 . . . Water and permanent-type ethylene glycol anti-freeze, –34_ C (–30_ F) . . . Special lubricant, Lubriplate EMB grease (TENNANT part no. 01433–1) ..Distilled water NOTE: Also check procedures indicted (H) after the first 50-hours of operation.

  • Page 62: Lubrication

    The rear wheel support pivots the rear wheel. The support has one grease fitting for the bearings. The rear wheel support bearings must be lubricated every 200 hours of operation. Use Lubriplate EMB grease (TENNANT part no. 01433–1). 08005 8400D MM312 (12–94)

  • Page 63: Front Wheel Bearings

    The hopper door pivot has two grease fittings, one on each side of the hopper. The hopper door should be lubricated with Lubriplate EMB grease (TENNANT part no. 01433–1) every 200 hours of operation. REAR SQUEEGEE CASTERS Each of the rear casters has a grease fitting. The casters must be lubricated every 50 hours of operation.

  • Page 64: Hydraulics

    Replace the strainer every 800 hours of operation. HYDRAULIC FLUID The quality and condition of the hydraulic fluid play a very important role in how well the machine operates. Tennant’s hydraulic fluid is specially selected to meet the needs of Tennant machines. 8400D MM312 (2–94)

  • Page 65: Hydraulic Hoses

    MAINTENANCE Tennant’s hydraulic fluids provide a longer life for the hydraulic components. There are two fluids available for different temperature ranges: Tennant part no. Ambient Temperature 65869 above 7_ C (45_ F) 65870 below 7_ C (45_ F) The higher temperature fluid has a higher viscosity and should not be used at the lower temperatures.

  • Page 66: Engine

    The red line will return to a correct reading after the engine runs for a while. Reset the air filter indicator by pushing the reset button on the end of the indicator after cleaning or replacing the air filter element. 8400D MM312 (4–96)

  • Page 67: Air Filter

    After cleaning the air filter element, inspect it for damage by placing a bright light inside. The slightest rupture requires replacement of the element. Inspect the seals on the ends of the element, they should be flexible and undamaged. 8400D MM312 (4–96)

  • Page 68: Fuel Filter

    3. Open the side and top engine access doors. FOR SAFETY: When servicing machine, allow engine to cool. Keep flames and sparks away from fuel system service area. Keep area well ventilated. 4. Open the air vent on top of the fuel injection pump. 8400D MM312 (12–94)

  • Page 69: Battery

    The battery is located at the bottom of the operator compartment. After the first 50 hours of operation, and every 800 hours after that, clean and tighten the battery connections. FOR SAFETY: When servicing machine, avoid contact with battery acid. 8400D MM312 (12–94)

  • Page 70: Belts And Chains

    A static drag chain prevents the buildup of static electricity in the machine. The chain is attached to the machine by a rear main brush skirt retaining bolt. Make sure the chain is touching the floor at all times. 08009 8400D MM312 (4–96)

  • Page 71: Debris Hopper

    REMOVING HOPPER DUST FILTER 1. Stop the engine and set the machine parking brake. FOR SAFETY: Before leaving or servicing machine; stop on level surface, set parking brake, turn off machine and remove key. 2. Open the hopper cover. 8400D MM312 (2–94)
  • Page 72 8. Put the cleaned or new dust filter in the hopper insert with the arrows pointing up. 9. Put the shaker frame on top of the panel filter. 10. Install the four retaining nuts and tighten. 11. Connect the shaker motor wire connectors. 08013 8400D MM312 (2–94)

  • Page 73: Thermo Sentryt

    Rotate the main brush end-for-end every 50 hours of operation for maximum brush life and best sweeping performance. Replace the main brush when the remaining bristles measure 25 mm (1 in) in length. 8400D MM312 (2–94)

  • Page 74: Replacing Main Brush

    8. Slide the main brush idler plate plug onto the main brush. 08017 9. Latch the idler plate onto the machine frame. 10. Close the right side main brush access door. 08018 8400D MM312 (2–94)

  • Page 75: Checking And Adjusting Main Brush Pattern

    (2.0 to 2.5 in). 00582 9. To increase the width of the main brush pattern, turn the main brush down pressure knob counter-clockwise. To decrease the width of the main brush pattern, turn the main brush down pressure knob clockwise. 8400D MM312 (2–94)
  • Page 76 Tighten the mounting bolts. C. Check the main brush pattern and readjust as necessary. Then adjust the width of the main brush pattern. 09184 8400D MM312 (2–94)

  • Page 77: Side Brush

    5. Slide the side brush off the side brush drive shaft. NOTE: Remove the drive hub and put it on the new brush if one is not installed. 6. Slide the new side brush onto the side brush drive shaft. 08019 8400D MM312 (2–94)

  • Page 78: Side Brush Guard

    REPLACING THE SCRUB BRUSHES 1. Set the machine parking brake. 2. Raise the scrub brushes. 3. Stop the engine. FOR SAFETY: Before leaving or servicing machine; stop on level surface, set parking brake, turn off machine and remove key. 8400D MM312 (2–94)

  • Page 79: Solution System

    NOTE: The water must not be hotter than 55_ C (130_ F), or tank damage may occur. Do not use steam to clean the tank. The solution tank on machines with the ESt option should be drained and cleaned daily. 8400D MM312 (2–94)

  • Page 80: Squeegees

    Turn the turnbuckle counter-clockwise, from the rear of the machine, to decrease the deflection at the ends of the squeegee blade. Be sure to turn both turnbuckles the same number of turns. 8400D MM312 (2–94)

  • Page 81: Adjusting Rear Squeegee Blade Deflection

    Tighten the top knobs on the casters. 6. Start the engine and drive the machine forward again to check the squeegee blade deflection. Readjust the squeegee blade deflection if necessary. 7. Raise the squeegee when finished. 8400D MM312 (2–94)

  • Page 82: Squeegee Blades

    6. Slide the squeegee blade onto the squeegee frame NOTE: Lubricating the squeegee frame where the squeegee blade makes contact with it will make it easier to slide the blade onto the frame. 04370 8400D MM312 (2–94)

  • Page 83: Side Squeegees

    NOTE: Lubricating the squeegee frame where the squeegee makes contact will make for easier squeegee installation. 05942 6. Replace the retainer bracket, deflector, clevis pin, and cotter pin. 7. Repeat for the side squeegee on the other side of the scrub head. 8400D MM312 (4–96)

  • Page 84: Skirts And Seals

    6 mm (0.25 in) above the corner of the long skirt. Check the skirts for wear or damage and adjustment daily. NOTE: The brush door skirts have slotted holes to allow for a ground clearance adjustment. The door must be closed for proper adjustment. 08001 8400D MM312 (2–94)

  • Page 85: Rear Skirts

    100 hours of operation. HOPPER INSPECTION DOOR SEAL 08023 The hopper inspection door seal is located on the hopper and seals the front of the debris hopper. Check the seal for wear or damage every 100 hours of operation. 08024 8400D MM312 (2–94)

  • Page 86: Hopper Door Seals

    The hopper vacuum fan seal is mounted on the inside of the hopper around the vacuum fan inlet. Check the seal for wear or damage every 100 hours of operation. You can reach the seal by removing the hopper insert. 8400D MM312 (2–94)

  • Page 87: Demister And Cover Seals

    100 hours of operation for damage. REAR WHEEL Torque the rear wheel nuts in a star pattern to 142 to 156 Nm (105 to 115 ft lb) after the first 50-hours of operation, and every 800 hours there after. 8400D MM312 (4–96)

  • Page 88: Pushing, Towing, And Transporting The Machine

    Use the lip for hanging tie-down hooks. WARNING: Hot bumper. Keep away. When transporting the machine on a trailer or in a truck, be sure to set the parking brake and block the tires to prevent the machine from rolling. 8400D MM312 (4–96)

  • Page 89: Machine Jacking

    WARNING: Hot bumper. Keep away. STORING MACHINE Before storing the machine for an extended period of time, the machine needs to be prepped to lessen the chance of rust, sludge, and other undesirable deposits from forming. Contact Tennant service personnel. 8400D MM312 (12–94)

  • Page 90: Specifications

    8400 G/LP – Specifications SPECIFICATIONS GENERAL MACHINE DIMENSIONS/CAPACITIES Item Dimension/capacity Length, Gasoline 2970 mm (117 in) Length, LPG 15 kg (33 lb) tank 3070 mm (121 in) Length, LPG 19.5 kg (43 lb) tank 3175 mm (125 in) Width with side brush 1610 mm (63.5 in) Height 1625 mm (64 in)

  • Page 91: Power Type

    HYDRAULIC SYSTEM System Capacity Fluid Type TENNANT part no. 65869 – above 7_ C (45_ F) Hydraulic reservoir 37.8 L (10 gal) TENNANT part no. 65870 – below 7_ C (45_ F) Hydraulic total 53 L (14 gal)

  • Page 92: Index

    Fuel level gauge, 19 Side brush down pressure knob, 24 Fuse, 26 Side brush switch, 16 Hazard light switch, 14 Button, Horn, 22 Hopper door switch, 15 Hopper lower lever, 16 Hopper raise switch, 15 Hopper temperature light, 18 8400D MM312 (12–94)
  • Page 93 Hopper, Pivots, 61 Fuse, 26 Hopper, Seals, 84 Hopper Inspection, Seal, 83 Double scrubbing, 42 Draining and cleaning tanks, 43 45 Gauge, Fuel level, 19 Dust filter, 69 70 Grease fittings, Rear wheel support, 60 Changing, 69–71 Cleaning, 69 8400D MM312 (12–94)
  • Page 94 Fluid level, 7, 62 Bristle length, 71 Hoses, 63 Checking brush pattern, 73–75 Propelling motor, 63 Door latch, 25 Reservoir, 62 Door seals, 83 System specifications, 89 Door skirts, 82 Down pressure, 24 II Speed switch, 17 Ignition switch, 22 8400D MM312 (12–94)
  • Page 95 Coolant level, 8, 64 Side brush down pressure knob, 24 Coolant type, 64 Flushing system, 64 Side brush guard, 76 Hoses, 64 Side brush switch, 16 Rear squeegee, 80 82 Deflection, 79 Leveling, 78–80 Replacing blades, 80–82 8400D MM312 (12–94)
  • Page 96 Specifications, 89 Steering column tilt lever, 23 Vacuum wand, 52 55 Steering wheel, 21 Stop scrubbing, 42 Stop sweeping, 36 Stop the machine, 45 47 Storing machine, 87 Sweeping, 35 37 Sweeping and brush information, 33 36 8400D MM312 (12–94)

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