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

Tennant 186E Operator's Manual

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186E
(Operator Manual)
MM160
Rev. 12 (12–95)

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Summary of Contents for Tennant 186E

  • Page 1 186E (Operator Manual) MM160 Rev. 12 (12–95)
  • Page 2 D The machine is maintained with Tennant Company supplied or equivalent parts. Parts and supplies may be ordered by phone or mail from any Tennant Company parts and service center, distributor, or from any of the Tennant Company 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 TOP OF THE SOLUTION TANK. BETWEEN THE BATTERIES. FLAMMABLE MATERIALS LABEL – LOCATED ON RIGHT SIDE PANEL. 03167 BACK STRAIN LABEL – LOCATED ON THE FLAMMABLE MATERIALS LABEL – UNDERSIDE OF THE FILTER ASSEMBLY. LOCATED ON RIGHT SIDE PANEL. 186E MM160 (6–94)

  • Page 5: Table Of Contents

    ....2-11 SIDE BRUSH ARM ....2-11 THERMO-SENTRYt ... . 2-11 186E MM160 (6–94)
  • Page 6 ... . . 3-11 DEBRIS HOPPER AND DUST FILTER 3-29 ELECTRICAL SCHEMATIC, 186E DEBRIS HOPPER ....3-29...
  • Page 7 ... Timer Group ....8-23 FINDING A TENNANT PART NUMBER Fig. 19 – Battery Charger Group ..8-24 PLACING AN ORDER .
  • Page 8 GENERAL INFORMATION 186E MM160 (6–94)
  • Page 9 ....GENERAL MACHINE PERFORMANCE MACHINE DIMENSIONS ....186E MM160 (6–94)
  • Page 10 SPECIFICATIONS 186E MM160 (6–94)

  • Page 11: Specifications

    Maximum forward speed – 2.9 mph (4.7 km/h) Maximum reverse speed – 2.8 mph (4.5 km/h) SYSTEM FLUID CAPACITIES Turning radius – 65 in (1650 mm) Scrub attachment solution tank – 14.5 gal (55 L) Scrub attachment recovery tank – 13 gal (50 L) 186E MM160 (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 186E MM160 (6–94)

  • Page 13: Operation

    TO STOP MACHINE ....2-13 POST OPERATION CHECKLIST – MOTOR STOPPED ... . 2-13 186E MM160 (6–94)
  • Page 14 OPERATION 186E MM160 (6–94)

  • Page 15: Preparation For Operation

    A. Machine Connector B. Batteries Connector 6. Check the main brush adjustment. See BRUSHES in the MAINTENANCE section. 00879 CHECKING BATTERY ELECTROLYTE LEVEL A. Battery B. Electrolyte Indicator Ring FOR SAFETY: When Servicing Machine, Avoid Contact With Battery Acid. 186E MM160 (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. Right Access Cover Q. Parking Brake Lever Instrument Panel 186E MM160 (6–94)

  • Page 17: Instrument Panel Symbols

    Filter Shaker Circuit Breaker No. 3 Main Brush Free-Float Main Brush Down Main Brush Up Circuit Breaker No. 1 Circuit Breaker No. 2 Vacuum Shut-Off Key Switch Parking Brake Side Brush Interrupt Switch Battery Charger Interrupt Battery Charger 186E MM160 (6–94)

  • Page 18: Controls And Instruments

    B. Filter Shaker Switch Circuit Breakers C. Filter Shaker By-Pass Switch J. Vacuum Fan Switch D. Battery Condition Gauge K. Charger Timer E. Main Brush Lever L. Charger Gauge F. Hour Meter M. Vacuum Shut-Off Knob G. Key-Operated On-Off Switch 186E MM160 (6–94)

  • Page 19: Controls And Instruments

    Circuit Breakers C. Battery Condition Gauge/Voltmeter J. Vacuum Fan Switch D. Main Brush Lever K. Charger Timer E. Hour Meter L. Charger Gauge F. Key-Operated On-Off Switch M. Vacuum Shut-Off Knob G. Clutch Handle N. Charger Panel 186E MM160 (6–94)

  • Page 20: Stationary And Clutch Handles

    “off” position, the filter shaker motor will not shake the dust from the filter when the machine is turned off. The switch should be in the “off” position when servicing the machine or when using the scrubber attachment. 186E MM160 (6–94)

  • Page 21: Main Brush Lever

    The timer will automatically stop the charger. WARNING: Batteries Emit Hydrogen Gas. Explosion Or Fire Can Result. Keep Sparks And Open Flame Away. Keep Covers Open When Charging. 186E MM160 (6–94)

  • Page 22: Charger Gauge

    To raise the squeegee, lift the lever into the “up” position. To lower the squeegee, lower the lever into the “down” position. 06898 CHARGER PANEL A. Interrupt Switch 2 10 186E MM160 (6–94)

  • Page 23: Solution Lever

    When parking the machine, always raise the brush to prevent the brush bristles from taking a set. 03152 THERMO-SENTRYt A. Thermo-Sentryt 03135 RAISING SIDE BRUSH ARM A. Side Brush Arm 2 11 186E MM160 (6–94)

  • Page 24: Machine Operation

    2. Release the machine parking brake. FOR SAFETY: Before Leaving Or Servicing 3. Drive the machine to the area to be swept. Machine; Stop On Level Surface, Set Parking Brake, And Turn Off Machine. 6. Lift the filter cover. 2 12 186E MM160 (6–94)

  • Page 25: Normal Scrubbing Operation

    Remove the key from the on-off switch. Check service records to determine service requirements. FOR SAFETY: Before Leaving Or Servicing Machine; Stop On Level Surface, Set Parking Brake, And Turn Off Machine And Remove Key. 2 13 186E MM160 (6–94)

  • Page 26: To Scrub

    The recovery tank A. Solution Tank may fill before the solution tank empties if B. Cover standing water is picked up in addition to the C. Soap Basket solution put down by the machine. 2 14 186E MM160 (6–94)

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

    WARNING: Flammable Materials Or Reactive Metals Can Cause Explosion Or Fire. Do Not Pick Up. 03148 RECOVERY TANK DRAIN HOSE A. Plug B. Drain Hose C. Access Door 2 15 186E MM160 (6–94)

  • Page 28: Post Operation Checklist - Motor Operating

    Check for wire or string tangled on brushes. POST OPERATION CHECKLIST – MOTOR OPERATING Drain and clean recovery tank. Check scrub brush pattern for width and Check vacuum hoses for debris or obstructions. evenness. Check for leaks. Check squeegees for proper deflection. 2 16 186E MM160 (6–94)

  • Page 29: Double Scrubbing Operation

    3. Turn off the machine and set the machine 10. Disassemble the vacuum wand and hose. parking brake. Place them in their storage locations. FOR SAFETY: Before Leaving Or Servicing Machine; Stop On Level Surface, Set Parking Brake, And Turn Off Machine. 2 17 186E MM160 (6–94)

  • Page 30: Filter Bypass Option

    BRUSHES recovery tank clean. Replace the hose on in the MAINTENANCE section. Here we will only the retention plug after the tank is empty. cover routine solution tank and debris tray installation and removal. 2 18 186E MM160 (6–94)

  • Page 31: To Mount Solution Tank And Debris Tray

    03149 DEBRIS TRAY A. Debris Tray 03725 CABLE SWIVEL SCREW B. Handle Hanger A. Swivel Screw 6. Place the tray handle on its hanger. B. Cable C. Solution Valve Lever 2 19 186E MM160 (6–94)

  • Page 32: 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. 03159 HOPPER HANGERS A. Hanger B. Hopper 9. Replace the tank drain plug. 2 20 186E MM160 (6–94)

  • Page 33: Machine Troubleshooting

    Solution control cable broken or Replace and/or adjust cable 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 186E MM160 (6–94)
  • Page 34 Debris caught on scrub brushes Remove debris Improper detergent or Check with TENNANTr brushes 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 186E MM160 (6–94)

  • Page 35: Transporting Machine

    To tie the machine down, strap around the bumper at the attachment bolts. 03136 LEFT SIDE TIE-DOWN LOCATION A. Tie-Down Location 2 23 186E MM160 (6–94)

  • Page 36: Machine Storage

    1. Empty debris hopper. 2. Raise the main brush and side brush. 3. Fully charge the batteries. 4. Disconnect the batteries-to-machine connector. 5. Park the machine in a cool, dry area. 2 24 186E MM160 (6–94)

  • Page 37: Maintenance

    3-11 DEBRIS HOPPER ....3-29 ELECTRICAL SCHEMATIC, 186E TO CHECK AND ADJUST HOPPER (For machines below serial number FLOOR CLEARANCE ..
  • Page 38 ..... . . 3-44 TO ADJUST SQUEEGEE ..3-46 186E MM160 (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. 186E MM160 (6–94)

  • Page 40: Maintenance Chart

    Clean recovery tank – Check squeegee for damage, wear and adjustment – Clean vacuum fan filter – – Vacuum wand attachment Clean vacuum fan filter – – Water pickup option Clean vacuum fan filter – Batteries Check electrolyte level 186E MM160 (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

    The brush arm pivots on a stub shaft on each side B. Breather of the machine. Each of the stub shafts are fitted with a grease fitting. Apply Lubriplate EMB grease (TENNANT Part No. 01433–1) to the grease fittings after every 50 hours of operation. 186E MM160 (6–94)

  • 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: Electrical System

    Add to the specific gravity reading 0.004, 4 points, for each 10_ F (6_ C) above 80_ F (27_ C). Subtract from the specific gravity reading 0.004, 4 points, for each 10_ F (6_C) below 80_ F (27_ C). 186E MM160 (6–94)

  • Page 45: Battery Charging

    A. Battery 6. Turn the battery charger knob to the number B. Electrolyte Indicator Ring of hours you wish to charge the batteries. The charger gauge will indicate the charger 11. Close the access covers. is operating. 186E MM160 (6–94)

  • Page 46: To Charge Batteries (For Machines Serial Number 006823 And Above)

    00879 D. Red Incomplete Battery Status CHECKING BATTERY ELECTROLYTE LEVEL Indicator Lamp E. Yellow 80% Charge Indicator Lamp A. Battery F. Green Complete Charge Indicator B. Electrolyte Indicator Ring Lamp 8. Replace the access covers. 3 10 186E MM160 (6–94)

  • Page 47: Activating Dry-Type Batteries

    If the commutator is worn or rough, the motor 5. Check the specific gravity of the batteries. armature should be removed and serviced. Charge the batteries until the specific gravity is 1.260 to 1.280. 3 11 186E MM160 (12–94)

  • Page 48: Electrical Schematic, 186E

    MAINTENANCE ELECTRICAL SCHEMATIC, 186E (For machines below serial number 004369) 03130 3 12 186E MM160 (6–94)

  • Page 49: (For Machines Serial Number 004369 To 006822)

    MAINTENANCE ELECTRICAL SCHEMATIC, 186E (For machines serial number 004369 to 006822) 03130 3 13 186E MM160 (6–94)
  • Page 50 MAINTENANCE ELECTRICAL SCHEMATIC, 186E (For machines serial number 006823 and above) 03130 3 14 186E MM160 (6–94)

  • Page 51: Electrical Schematic, 186Ee (For Machines Below Serial Number 006823)

    MAINTENANCE ELECTRICAL SCHEMATIC, 186EE (For machines below serial number 006823) 03095 3 15 186E MM160 (6–94)
  • Page 52 MAINTENANCE ELECTRICAL SCHEMATIC, 186EE (For machines serial number 006823 and above) 03095 3 16 186E MM160 (6–94)

  • Page 53: Belts And Chains

    It should not touch the end of the slot. If the bolt is in the proper position, skip to step 12; if not, continue with step 9 to readjust reverse belt tension. 3 17 186E MM160 (6–94)

  • Page 54: 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 18 186E MM160 (6–94)

  • Page 55: Side Brush Belt

    A. Side Brush Arm B. Stop Bolt C. Lock Nut 10. Adjust the stop bolt so it clears the stop by 0.06 in (5 mm). 11. Replace the debris hopper. 12. Lower the filter cover. 3 19 186E MM160 (6–94)

  • Page 56: To Replace Side Brush Belt

    7. Position the new belt over the motor sheave, under the belt guide, and through the side brush arm. 8. Loop the belt over the speed reducer sheave and bolt the speed reducer back onto the side brush arm. 3 20 186E MM160 (6–94)

  • Page 57: Long Main Brush Belt

    9. Replace the right side bumper and cover, and access cover. 03141 LONG MAIN BRUSH BELT A. Self-Adjusting Sheave B. Short Main Brush Belt C. Two-Step Sheave D. Long Main Brush Belt E. Threaded Holes 3 21 186E MM160 (6–94)

  • Page 58: Vacuum Fan Belt

    11. Pull belt idler back and slide the long main The belt should deflect 0.06 in (5 mm). brush belt out of the machine. 12. Position the new long main brush belt in the machine. 3 22 186E MM160 (6–94)
  • Page 59 VACUUM FAN (NEW STYLE) A. Motor B. Adjustment Stud A. Vacuum Fan C. Vacuum Fan Belt B. Adjustment Slot D. Jam Nut C. Stud Nut 5. Tighten all nuts and recheck belt tension. 6. Replace the rear panel. 3 23 186E MM160 (6–94)

  • Page 60: To Replace Vacuum Fan Belt

    The chain is attached to the machine by a rear brush skirt mounting bolt. Check the chain for wear periodically. Make sure it is making contact with the floor at all times. 3 24 186E MM160 (6–94)

  • Page 61: Brushes

    When the main brush slots and drive hub keys are properly aligned, the main brush will 5. Place the main brush lift handle in the (Main easily engage the drive hub. Brush Up) position. 3 25 186E MM160 (12–95)

  • Page 62: Side Brush

    (25 mm) of space between the floor and the side brush bristles. Side brush adjustments are made by mounting the side brush in a different one of the five mounting holes in the side brush drive shaft. 3 26 186E MM160 (6–94)

  • Page 63: 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 27 186E MM160 (6–94)

  • Page 64: 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 28 186E MM160 (6–94)

  • Page 65: Debris Hopper And Dust Filter

    A. Hopper 4. The bottom rear metal edge of the hopper B. Hanger Bracket should clear the floor by 0.5 in (15 mm). Also, be sure the hopper is level side to side. 3 29 186E MM160 (6–94)

  • Page 66: To Adjust Dust Filter To Hopper Sealing

    The seal pressure should not be so great that the hopper will not float. Push the hopper down to check – it should be able to go down and return to its original position. 3 30 186E MM160 (6–94)

  • Page 67: To Remove Hopper Dust Filter

    5. Position the dust filter in the filter frame with the arrows pointing away from the machine. 6. Position the filter hold-down bar on the filter. 7. Secure the front filter cover on the filter frame with the six bolts. 3 31 186E MM160 (6–94)

  • Page 68: Vacuum Wand Option

    B. Bag 7. Replace the cover and secure with the wing 5. Position the new bag on the panel. Be sure nuts. the bag is not pinched when closing the door. 8. Lower the filter assembly. 3 32 186E MM160 (6–94)

  • Page 69: Recovery Tank

    2. Remove the drain hose from its retention plug. 03173 VACUUM FAN A. Vacuum Fan B. Filter C. Screen D. Cover 03148 RECOVERY TANK DRAIN HOSE A. Retention Plug B. Drain Hose C. Recovery Tank D. Inspection Door 3 33 186E MM160 (6–94)

  • Page 70: Rear Squeegee

    1. Place the squeegee lever in the up position. 2. Turn off the machine and set the machine parking brake. FOR SAFETY: Before Leaving Or Servicing Machine; Stop On Level Surface, Set Parking Brake, And Turn Off Machine. 3 34 186E MM160 (6–94)

  • Page 71: To Install Squeegee Assembly

    5. Remove the stationary cam and levered 00928 cam. INSTALLING STATIONARY CAM 6. Remove the squeegee retention band. A. Front Squeegee Blade B. Stationary Cam 7. Remove the front squeegee from the C. Retention Band squeegee frame. 3 35 186E MM160 (6–94)

  • Page 72: To Replace Rear Squeegee Blade

    A. Rear Squeegee Blade machine. B. Backup Strip 4. Turn the rear squeegee levered cam to the right to relieve tension on the squeegee retention band. 5. Remove the squeegee retention band, stationary cam, and levered cam. 3 36 186E MM160 (6–94)

  • Page 73: 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 37 186E MM160 (6–94)
  • Page 74 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 38 186E MM160 (6–94)

  • Page 75: 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 39 186E MM160 (6–94)

  • Page 76: Debris Tray

    A. Solution Tank B. Hanger 5. 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 40 186E MM160 (6–94)

  • Page 77: Recovery Tank

    2. Remove the drain hose from its retention plug. 03173 VACUUM FAN A. Vacuum Fan B. Filter C. Screen 03148 D. Cover RECOVERY TANK DRAIN HOSE A. Retention Plug B. Drain Hose C. Recovery Tank D. Inspection Door 3 41 186E MM160 (6–94)

  • Page 78: 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 42 186E MM160 (6–94)

  • Page 79: To Install Squeegee Assembly

    5. Remove the stationary cam and levered 00928 cam. INSTALLING STATIONARY CAM 6. Remove the squeegee retention band. A. Front Squeegee Blade B. Stationary Cam 7. Remove the front squeegee from the C. Retention Band squeegee frame. 3 43 186E MM160 (6–94)

  • Page 80: To Replace Rear Squeegee Blade

    Overtightening the levered cam may damage the squeegee frame and retention band. 12. Reinstall the squeegee assembly on the machine. 03163 INSTALLING SQUEEGEE BLADE A. Squeegee Frame B. Rear Squeegee Blade 3 44 186E MM160 (6–94)
  • Page 81 Overtightening the levered cam may damage the squeegee frame and retention band. 00932 POSITIONING STATIONARY CAM A. Rear Squeegee Blade B. Retention Band C. Stationary Cam 3 45 186E MM160 (6–94)

  • Page 82: To Adjust Squeegee

    03166 SQUEEGEE TIPS ADJUSTMENT KNOB A. Squeegee Tips Adjustment Knob B. Squeegee Assembly 5. Operate the machine in a forward direction with the squeegee down to deflect the squeegee blades once again. 3 46 186E MM160 (6–94)

  • Page 83: Standard Bolt Torque Chart

    ....THREAD SEALANT AND LOCKING COMPOUNDS ....186E MM160 (6–94)
  • Page 84 APPENDIX 186E MM160 (6–94)

  • Page 85: Hardware Information

    18 (24) 25 (34) 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. 186E MM160 (6–94)
  • Page 86 APPENDIX 186E MM160 (6–94)

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