Tennant 186 Operator's Manual
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Tennant 186 Operator's Manual

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186
(Operator Manual)
MM159
Rev. 05 (12–95)

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Summary of Contents for Tennant 186

  • Page 1 (Operator Manual) MM159 Rev. 05 (12–95)

  • Page 2: Standard Parts

    D The machine is maintained with TENNANT supplied or equivalent parts. Parts and supplies may be ordered by phone or mail from any TENNANT parts and service center, distributor, or from any of the TENNANT subsidiaries. Before ordering parts or supplies, be sure to have your machine model number and serial number handy.

  • Page 3: General Information

    Before Working On Machine. – Avoid Contact With Battery Acid. The following information signals potentially – Use TENNANT Supplied Or Equivalent dangerous conditions to the operator or Replacement Parts. equipment. Read this manual carefully. Know when these conditions can exist.
  • Page 4 THE TOP OF THE SOLUTION TANK. LEFT SIDE PANEL. FLAMMABLE MATERIALS LABEL – LOCATED ON RIGHT SIDE PANEL. 03132 FLAMMABLE MATERIALS LABEL – LOCATED BACK STRAIN LABEL – LOCATED ON THE ON RIGHT SIDE PANEL. UNDERSIDE OF THE FILTER ASSEMBLY. 186 MM159 (6–94)

  • Page 5: Table Of Contents

    ....2-10 SIDE BRUSH ARM ....2-10 THERMO-SENTRYt ... . 2-10 186 MM159 (6–94)
  • Page 6 VACUUM WAND OPTION ..3-34 TO REPLACE VACUUM WAND ..... 3-34 186 MM159 (6–94)
  • Page 7 Fig. 17 – Lift and Tie–Down Kit ..7-22 FINDING A TENNANT PART NUMBER PLACING AN ORDER ....
  • Page 8 ..8-17 CROSS REFERENCE ....PART NUMBER TO PAGE NUMBER CROSS REFERENCE LIST ..186 MM159 (6–94)
  • Page 9 ....1–3 GENERAL MACHINE PERFORMANCE 1–3 MACHINE DIMENSIONS ....1–4 186 MM159 (6–94)

  • Page 10: Specifications

    SPECIFICATIONS 186 MM159 (6–94)

  • Page 11: Specifications

    Engine lubricating oil – 1 qt (0.95 L) Fuel tank – 1.25 gal (4.75 L) gasoline 20 lb (9 kg) LPG Scrub attachment solution tank – 14.5 gal (55 L) Scrub attachment recovery tank – 13 gal (50 L) 186 MM159 (6–94)

  • Page 12: Machine Dimensions

    SPECIFICATIONS MACHINE DIMENSIONS 36 in (915 mm) 58 in (1475 mm) TOP VIEW 38 in (965 mm) SIDE VIEW 03131 03138 186 MM159 (6–94)

  • Page 13: Operation

    TO STOP MACHINE ....2-15 POST OPERATION CHECKLIST – ENGINE STOPPED ... . 2-16 186 MM159 (6–94)
  • Page 14 OPERATION 186 MM159 (6–94)

  • Page 15: Preparation For Operation

    Flames And Sparks Away From Fuel System FOR SAFETY: Do Not Operate Machine Unless Service Area. Keep Area Well Ventilated. Operation Manual Is Read And Understood. 3. Check the engine oil level. See ENGINE in the MAINTENANCE section. 186 MM159 (6–94)

  • Page 16: Operation Of Controls

    L. Recovery Tank D. Filter Cover M. Squeegee Suction Hose E. Hopper N. Squeegee F. Side Brush O. Drain Hose G. Side Brush Arm P. Squeegee Lift Lever H. Engine Access Cover Q. Parking Brake Lever Instrument Panel 186 MM159 (6–94)

  • Page 17: Instrument Panel Symbols

    The symbols are used to identify controls and displays on the machine: Filter Shaker Main Brush Free-Float Main Brush Down Main Brush Up Vacuum Shut-Off Circuit Breaker No. 1 Circuit Breaker No. 2 Choke Engine Start Key Switch Parking Brake Side Brush 186 MM159 (6–94)

  • Page 18: Controls And Instruments

    G. Start Switch B. Filter Shaker Switch H. Clutch Handle C. Filter Shaker By-pass Switch Key-Operated On-Off Switch D. Ammeter J. Engine Choke Knob E. Main Brush Lever K. Circuit Breakers F. Hour Meter L. Vacuum Shut-Off Knob 186 MM159 (6–94)

  • Page 19: Controls And Instruments

    G. Clutch Handle B. Filter Shaker By-Pass Switch H. Clutch Reverse Handle C. Ammeter Key-Operated On-Off Switch D. Main Brush Lever J. Engine Choke Knob E. Hour Meter K. Circuit Breakers F. Start Switch L. Vacuum Shut-Off Knob 186 MM159 (6–94)

  • Page 20: Stationary And Clutch Handles

    The ammeter registers the charging current which is being passed to the battery by the alternator. It also registers a discharge of current being used by the machine when the alternator is not charging. 186 MM159 (6–94)

  • Page 21: Start Switch

    The circuit breakers are located on the instrument panel. The following chart shows the various circuit breakers and the electrical components they protect. PROTECTIVE DEVICE RATING CIRCUIT PROTECTED CB–1 15 A Shaker Motor CB–2 15 A Hour Meter, Thermo-Sentryt, Alternator 186 MM159 (6–94)

  • Page 22: Squeegee Lever

    When parking the machine, always raise the 03152 brush to prevent the brush bristles from taking a THERMO-SENTRYt set. A. Thermo-Sentryt 03135 RAISING SIDE BRUSH ARM A. Side Brush Arm 2 10 186 MM159 (6–94)

  • Page 23: Machine Operation

    6. Drive the machine to the area to be swept. Check for LPG odor or frosting on hoses or components indicating a leak. Check controls for proper operation. Check service records to determine service requirements. 2 11 186 MM159 (6–94)

  • Page 24: To Sweep

    Machine; Stop On Level Surface, Set Parking Brake, And Turn Off Machine. Brake, And Turn Off Machine And Remove Key. 6. Lift the filter cover. 3. LPG powered machines: Close the LPG tank liquid service valve. 2 12 186 MM159 (6–94)

  • Page 25: To Stop Machine

    STOPPED lists things to check after stopping the machine engine. 5. Release the machine parking brake. 6. Drive the machine to the area to be PRE-START CHECKLIST scrubbed. Check under machine for leak spots. Check engine lubricating oil level. Check fuel level. 2 13 186 MM159 (6–94)

  • Page 26: To Scrub

    NOTE: For machines serial number 004369 and 9. Lower the squeegee lever into the down above, the filter shaker by-pass switch should be position. in the “off” position to prevent the filter shaker from shaking. 2 14 186 MM159 (6–94)

  • Page 27: To Drain Recovery Tank And Empty Debris Tray

    2. Lift the squeegee lever into the up position. 3. Place the solution spreader tube in the up 03148 position. RECOVERY TANK DRAIN HOSE 4. Pull the side brush arm into the raised A. Plug position. B. Drain Hose C. Access Door 2 15 186 MM159 (6–94)

  • Page 28: Post Operation Checklist - Engine Stopped

    15 to 20 minutes. Then make a second scrubbing pass in the normal manner with the rear squeegee lowered. FOR SAFETY: When Using Machine; Go Slow On Grades And Slippery Surfaces. 07127 VACUUM WAND A. Vacuum Hose B. Storage Bin 2 16 186 MM159 (6–94)

  • Page 29: Filter Bypass Option

    NOTE: The tank will not empty with the vacuum fan operating. 07126 VACUUM SHUT-OFF KNOB A. Vacuum Shut-Off Knob B. Instrument Panel 03148 RECOVERY TANK DRAIN HOSE A. Retention Plug B. Drain Hose 2 17 186 MM159 (6–94)

  • Page 30: Scrub Attachment

    6. Place the tray handle on its hanger. FOR SAFETY: Before Leaving Or Servicing Machine; Stop On Level Surface, Set Parking Brake, And Turn Off Machine. 2. Raise the filter assembly. 3. Remove the debris hopper. 2 18 186 MM159 (6–94)

  • Page 31: To Remove Solution Tank And Debris Tray

    “off” position to prevent the filter shaker from shaking. 2. Raise the filter assembly. 3. Position the spreader tube in the “raised” position. 03725 CABLE SWIVEL SCREW A. Swivel Screw B. Cable C. Solution Valve Lever 2 19 186 MM159 (6–94)
  • Page 32 A. Hanger 5. Disconnect the solution cable on the B. Hopper machine from the from the solution tank cable. 9. Replace the tank drain plug. 6. Slide the debris tray out from under the solution tank. 2 20 186 MM159 (6–94)

  • Page 33: Machine Troubleshooting

    Solution control cable broken Replace and/or adjust cable or out of adjustment Solution supply lines and Flush solution supply lines, spreader tube clogged spreader tube Solution tube in “up” position Place tube in “down” position 2 21 186 MM159 (6–94)
  • Page 34 Debris caught on scrub brushes Remove debris Improper detergent or brushes Check with TENNANTr used representative for advice Worn scrub brushes Replace scrub brushes Scrub brushes out of adjustment Adjust scrub brushes Debris tray full Empty tray 2 22 186 MM159 (6–94)

  • Page 35: Transporting Machine

    A. Tie-Down When transporting the machine on a trailer or in a truck, be sure to engage the machine parking brake if so equipped, and block the machine tires to prevent the machine from rolling. 2 23 186 MM159 (6–94)

  • Page 36: Machine Storage

    8. Remove the spark plug and pour 1 oz (30 cc) of new engine oil into the cylinder. 9. Crank the engine to distribute the oil, then replace the spark plug. 10. Clean the engine cooling fins. 2 24 186 MM159 (6–94)

  • Page 37: Maintenance

    ....3-18 TO REPLACE VACUUM WAND ......3-34 186 MM159 (6–94)
  • Page 38 ..... . . 3-45 TO ADJUST SQUEEGEE ..3-47 186 MM159 (6–94)

  • Page 39: Recommended First 25-Hour Machine Inspection

    After the first 25 hours of operation, the following 3. Check the side brush and main brush procedures are recommended: patterns. 1. Check the brush pattern for correct brush 4. Check the drive chain tension. adjustment. 2. Check the floor skirts to floor clearance. 186 MM159 (6–94)

  • Page 40: Maintenance Chart

    Check rear squeegee for damage, wear, and adjustment – 25 Hours Engine Change oil Clean cooling fins – Clean and oil air filter pre-cleaner element – Scrub attachment Clean recovery tank – Check squeegee for damage, wear, and adjustment – 186 MM159 (6–94)
  • Page 41 Check lubricant level EO – Engine oil DW – Distilled water SPL – Special lubricant, Lubriplate EMB grease, TENNANT Part No. 01433–1 SO – Spray lubricant GL – SAE 90 weight gear lubricant NOTE: More frequent intervals may be required in extremely dusty conditions.

  • Page 42: Lubrication

    SAE 30-weight, API class SF engine oil. If with a grease fitting. Apply Lubriplate EMB grease multiviscosity oil is used, oil consumption and (TENNANT Part No. 01433–1) to the grease combustion deposits will increase. fittings after every 50 hours of operation.

  • Page 43: Rear Caster

    A. Sheave SQUEEGEE PIVOT The squeegee pivot allows the rear squeegee to pivot over uneven floor surfaces. Apply Lubriplate EMB grease (TENNANT Part No. 01433–1) to the pivot shaft after every 50 hours of operation. 03143 REAR CASTER A. Rear Caster B.

  • Page 44: Engine

    A. Foam pre-cleaner B. Dry Cartridge Air Filter C. Wing Nut D. Air Filter Cover 5. Remove the foam pre-cleaner. 6. Wash the foam pre-cleaner in liquid detergent and water. 186 MM159 (6–94)

  • Page 45: Fuel System - Gasoline

    The regulator reduces the pressure of the LPG running and warm. fuel to the level required by the carburetor. From the regulator, the LPG fuel is sent to the carburetor where it is finally metered into the combustion chamber air flow. 186 MM159 (6–94)

  • Page 46: Fuel Tanks

    The following not attempt to make repairs to the tank, specific checks must also be made: regardless of condition. Repairs or disposal must only be made by qualified personnel. 3 10 186 MM159 (6–94)

  • Page 47: To Change An Lpg Fuel Tank

    2. Close the tank service valve. 3. Operate the engine until it stops from lack of fuel. FOR SAFETY: Before Leaving Or Servicing Machine; Stop On Level Surface, Set Parking Brake, And Turn Off Machine. 3 11 186 MM159 (6–94)

  • Page 48: Fuel Filter Lock

    If any malfunction is noted, completely disassemble the regulator. Clean all of the parts in alcohol. Inspect all of the parts and replace where needed. Carefully reassemble the regulator with the seal repair kit. Check for proper operation. 3 12 186 MM159 (6–94)

  • Page 49: Lpg Fuel Troubleshooting

    32 in lb (3.5 Nm). 01471 GAPPING THE SPARK PLUG STARTER A. Spark Plug B. Center Electrode The starter motor brushes must be inspected after C. Side Electrode every 400 hours of operation. D. Gapping Tool 3 13 186 MM159 (6–94)

  • Page 50: Valve Tappet Clearance

    0.006 to 0.008 in (0.15 to 0.20 mm) cold. The exhaust valve clearance should be 0.017 to 0.019 in (0.43 to 0.48 mm) cold. Grind off the end of the valve stem to obtain the proper clearance. 3 14 186 MM159 (6–94)

  • Page 51: Electrical System

    Never add acid to batteries, only water. Keep vent plugs firmly in place at all times, except when adding water or taking hydrometer readings. FOR SAFETY: When Servicing Machine, Avoid Contact With Battery Acid. 3 15 186 MM159 (6–94)
  • Page 52 MAINTENANCE ELECTRICAL SCHEMATIC (For machines below serial number 003181) 03145 3 16 186 MM159 (6–94)
  • Page 53 MAINTENANCE ELECTRICAL SCHEMATIC (For machines serial number 003181 to 004368) 03145 3 17 186 MM159 (6–94)

  • Page 54: (For Machines Serial Number 004369 And Above)

    MAINTENANCE ELECTRICAL SCHEMATIC (For machines serial number 004369 and above) 03145 3 18 186 MM159 (6–94)

  • Page 55: Belts And Chains

    NOTE: If the reverse belt is too tight, it will require excessive clutch handle pressure to propel machine in the forward direction. It may also cause the machine to creep backward when the handle is released. 3 19 186 MM159 (6–94)

  • Page 56: To Replace Propelling Belts

    A. Coupling Rap on bearing before tightening. B. Flange Bolts I. Tighten the right bearing collar. 7. Slide the old belt out through the coupling opening. 8. Slide the new belt through the coupling opening. 3 20 186 MM159 (6–94)

  • Page 57: Side Brush Belt

    Machine; Stop On Level Surface, Set Parking Brake, And Turn Off Machine. 2. Remove the debris hopper. 3. Remove the engine access cover, right side bumper and cover. 4. Place the side brush arm in the down position. 3 21 186 MM159 (6–94)

  • Page 58: To Replace Side Brush Belt

    4. Place the side brush arm in the raised 9. Adjust the belt tension as described in TO position. CHECK AND ADJUST SIDE BRUSH BELT TENSION. 10. Replace the right side bumper and cover, and engine access cover. 11. Replace the debris hopper. 3 22 186 MM159 (6–94)

  • Page 59: Short Main Brush Belt

    5. Evenly tighten the two screws to expand the self-adjusting sheave. A. Self-Adjusting Sheave B. Short Main Brush Belt 6. Slip the belt off the sheaves. C. Two-Step Sheave D. Long Main Brush Belt E. Threaded Holes 3 23 186 MM159 (6–94)
  • Page 60 11. Pull belt idler back and slide the long main brush belt out of the machine. 12. Position the new long main brush belt in the machine. 3 24 186 MM159 (6–94)

  • Page 61: Vacuum Fan Belt

    6. Adjust belt tension as described in TO CHECK AND ADJUST VACUUM FAN BELT 03154 TENSION. VACUUM FAN BELT (OLD STYLE) 7. Replace the rear panel. A. Engine B. Adjustment Stud C. Vacuum Fan Belt D. Jam Nut 3 25 186 MM159 (6–94)

  • Page 62: Wheel Drive Chains

    100 hours of operation. The wheel drive chains should have 0.5 in (15 mm) slack measured midway between the sprockets. 03139 WHEEL DRIVE CHAIN A. Adjustment Bolts B. Sprocket C. Chain D. Adjustment Block 3 26 186 MM159 (6–94)

  • Page 63: Brushes

    When the main brush slots and drive hub 5. Place the main brush lift handle in the (Main keys are properly aligned, the main brush will Brush Up) position. easily slip on the drive hub. 3 27 186 MM159 (12–95)

  • Page 64: Side Brush

    1 in (25 mm) of space between the floor and the side brush bristles. The side brush is adjusted by changing the mounting location on the drive shaft. 3 28 186 MM159 (6–94)

  • Page 65: To Install Side Brush

    6. Secure the side brush to the drive shaft with the retaining bolt or clevis pin. NOTE: It may be necessary to readjust the side brush drive belt tension after adjusting the side brush height. 3 29 186 MM159 (6–94)

  • Page 66: Skirts And Seals

    0.06 in (2 mm). Inspect the skirt for wear or damage and proper floor clearance daily. 02347 BRUSH DOOR SKIRT A. Skirt B. Door 03157 REAR BRUSH SKIRTS A. Rear Brush Skirts 3 30 186 MM159 (6–94)

  • Page 67: Debris Hopper And Dust Filter

    HOPPER HANGER BRACKET 4. The bottom rear metal edge of the hopper A. Hopper should clear the floor by 0.5 in (15 mm). B. Hanger Bracket Also, be sure the hopper is level side to side. 3 31 186 MM159 (6–94)

  • Page 68: To Adjust Dust Filter To Hopper Sealing

    NOTE: Be sure the dust filter is dry before reinstalling it in the machine. Machines equipped with the fine particle filter option should vacuum the extra filter clean whenever the standard filter is serviced. 3 32 186 MM159 (6–94)

  • Page 69: To Remove Dust Filter

    2. Remove the six front filter cover screws and the front filter cover. 3. Remove the filter hold-down bar. Remove the dust filter. 03158 REMOVING HOLD-DOWN BAR A. Dust Filter B. Hold-Down Bar 3 33 186 MM159 (6–94)

  • Page 70: Vacuum Wand Option

    4. Pull the bag off the panel connection. 03156 VACUUM BAG A. Vacuum Panel B. Bag 5. Position the new bag on the panel. Be sure the bag is not pinched when closing the door. 3 34 186 MM159 (6–94)

  • Page 71: Water Pickup Option

    Remove all sludge and debris from the bottom of the tank. NOTE: The water must not be hotter than 130_ F (54_ C) or tank damage may occur. 5. Return the drain hose to its retention plug. 3 35 186 MM159 (6–94)

  • Page 72: Rear Squeegee

    Machine; Stop On Level Surface, Set Parking F. Squeegee Suction Hose Brake, And Turn Off Machine. 4. Pull the squeegee assembly retaining pin out of the squeegee pivot pin. 5. Pull the squeegee assembly off the squeegee mounting block. 3 36 186 MM159 (6–94)

  • Page 73: To Install Squeegee Assembly

    5. Remove the stationary cam and levered cam. 6. Remove the squeegee retention band. 00928 7. Remove the front squeegee from the INSTALLING STATIONARY CAM squeegee frame. A. Front Squeegee Blade B. Stationary Cam C. Retention Band 3 37 186 MM159 (6–94)

  • Page 74: To Replace Rear Squeegee Blade

    3. Remove the squeegee assembly from the 03164 machine. INSTALLING BACKUP STRIP 4. Turn the rear squeegee levered cam to the A. Rear Squeegee Blade right to relieve tension on the squeegee B. Backup Strip retention band. 3 38 186 MM159 (6–94)

  • Page 75: To Adjust Squeegee

    If the levered cam is too loose to clamp the squeegee blade, rotate the stationary cam to the next flat edge and retighten the levered cam. Overtightening the levered cam may damage the squeegee frame and retention band. 3 39 186 MM159 (6–94)
  • Page 76 The backup strip controls the squeegee blade deflection. Flip the backup strip to increase or decrease the squeegee blade deflection. 03164 BACKUP STRIP A. Rear Squeegee Blade B. Backup Strip (This position has the smallest deflection) 3 40 186 MM159 (6–94)

  • Page 77: Scrub Attachment

    If detergent cakes on the bottom of the tank, remove the deposits with a strong blast of water. 03160 SPREADER TUBE A. Solution Tank B. Spreader Tube 03150 SOLUTION TANK A. Solution Tank B. Tank Cover C. Soap Basket 3 41 186 MM159 (6–94)

  • Page 78: Solution Tank

    A. Solution Tank or less in length. B. Hanger 4. The bottom rear metal edge of the tray should clear the floor by 0.18 in (5 mm). Also, be sure the tray is level side to side. 3 42 186 MM159 (6–94)

  • Page 79: Recovery Tank

    FOR SAFETY: Before Leaving Or Servicing Machine; Stop On Level Surface, Set Parking Brake, And Turn Off Machine. 03148 RECOVERY TANK DRAIN HOSE A. Retention Plug B. Drain Hose C. Recovery Tank D. Inspection Door 3 43 186 MM159 (6–94)

  • Page 80: To Install Squeegee Assembly

    B. Front Squeegee Blade bolts are above the squeegee frame. C. Squeegee Frame 4. Slide the squeegee assembly retaining pin through the squeegee pivot pin. 5. Push the squeegee suction hose onto the recovery tank connector. 3 44 186 MM159 (6–94)

  • Page 81: To Replace Rear Squeegee Blade

    00929 INSTALLING LEVERED CAM A. Levered Cam B. Front Squeegee Blade C. Retention Band 11. Pull the levered cam lever up to tighten the front squeegee in place. 3 45 186 MM159 (6–94)
  • Page 82 If the levered cam is too loose to clamp the squeegee blade, rotate the stationary cam to the next flat edge and retighten the levered cam. Overtightening the levered cam may damage the squeegee frame and retention band. 3 46 186 MM159 (6–94)

  • Page 83: To Adjust Squeegee

    03164 adjustment was made. BACKUP STRIP A. Rear Squeegee Blade B. Backup Strip (This position has the smallest deflection) 03166 SQUEEGEE TIPS ADJUSTMENT KNOB A. Squeegee Tips Adjustment Knob B. Squeegee Assembly 3 47 186 MM159 (6–94)
  • Page 84 MAINTENANCE 3 48 186 MM159 (6–94)
  • Page 85 ....4–3 THREAD SEALANT AND LOCKING COMPOUNDS ....4–3 186 MM159 (6–94)
  • Page 86 APPENDIX 186 MM159 (6–94)

  • Page 87: Hardware Information

    19857, 0.5 ml tube. 32 (43) 47 (64) 58 (79) 83 (112) 94 (127) 133 (180) 144 (195) 196 (265) 260 (352) 336 (455) 470 (637) 664 (900) NOTE: Decrease torque by 20% when using a thread lubricant. 186 MM159 (6–94)
  • Page 88 APPENDIX 186 MM159 (6–94)

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