Tennant 92 GR Operator'S Manual Download Page 45

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92GR MM188 (11---87)

3-65546

HYDRAULIC SYSTEM TROUBLESHOOTING

Problem

Cause

Remedy

Machine travels slowly or

Parking brake engaged

Release parking brake

not at all

Control linkage broken or

Replace and/or adjust

not adjusted properly

linkage

Relief valve stuck open

Clean or replace relief valve ---

(leaking)

one forward, one reverse

Motor failure

See Hydraulic Components
Troubleshooting

Pump failure

See Hydraulic Components
Troubleshooting

Hydraulic fluid level low

Fill hydraulic fluid reservoir

Main brush turns slowly

Hydraulic control valve

See Hydraulic Components

or not at all

failure

Troubleshooting

Hydraulic motor failure

See Hydraulic Components
Troubleshooting

Gear pump failure

See Hydraulic Components
Troubleshooting

Side brush turns slowly

Hydraulic control valve

See Hydraulic Components

or not at all

failure

Troubleshooting

Hydraulic motor failure

See Hydraulic Components
Troubleshooting

Relief valve in control

Clean or replace relief

valve sticking

valve

Gear pump failure

See Hydraulic Components

Troubleshooting

Poor or no vacuum to

Hydraulic control valve

See Hydraulic Components

brush compartment

failure

Troubleshooting

Hydraulic motor failure

See Hydraulic Components
Troubleshooting

Gear pump failure

See Hydraulic Components
Troubleshooting

Hopper will not lift

Hydraulic control valve

See Hydraulic Components

failure

Troubleshooting

Hydraulic orifice at lift

Replace orifice

cylinder plugged
Lift cylinder failure

See Hydraulic Components
Troubleshooting

Gear pump failure

See Hydraulic Components
Troubleshooting

Hopper overloaded

Empty hopper

Lift arms binding

Replace and/or adjust
lift arm linkage

Summary of Contents for 92 GR

Page 1: ...Operator Manual...

Page 2: ...hine is maintained regularly per the maintenance instructions provided D The machine is maintained with Tennant Company supplied or equivalent parts Parts and supplies may be ordered by phone or mail...

Page 3: ...ROCEDURES j DUMPING HOPPER j USING HOPPER SUPPORT BAR j LUBRICATION AND MAINTENANCE j LUBRICATION AND MAINTENANCE CHART j CHANGING HYDRAULIC FLUID CAPACITY OF RESERVOIR j HYDRAULIC FLUID FILTER j TENN...

Page 4: ...tilation will cause asphyxiation Check exhaust system regularly for leaks WARNING Do not operate machine in flammable or explosive environment Machine is not designed for such an environment It could...

Page 5: ...Avoid moving parts of the machine Do not wear loose jackets shirts or sleeves when working on machine because of the danger of becoming caught in moving parts Keep shields and guards in position Wear...

Page 6: ...Go Slow On Grades And Slippery Surfaces 5 Before Leaving Machine Stop On Level Surface Stop Engine And Set Parking Brake If So Equipped When Parking Remove Key 6 Use TENNANT CONPANY Supplied Or Equiva...

Page 7: ...ON LEFT SIDE LIFT ARM AND ON HOPPER SUPPORT BAR 04306 WARNING INSTRUCTIONS To Engage Safety Support Bar 1 Lift Hopper To Extreme Up Position 2 Set Parking Brake 3 Dismount Machine And Lower Safety Su...

Page 8: ...Ignition Switch 2 8 Parking Brake 2 8 Side Brush Height Adjustment Knob 2 9 Page Hopper Support Bar 2 9 To Engage Hopper Support Bar 2 9 To Disengage Hopper Support Bar 2 9 Hydraulic Pressure Gauge 2...

Page 9: ...Brush Wire Brush 3 28 To Check and Adjust Main Brush Pattern 3 29 To Check and Adjust Wire Brush Pattern 3 30 Side Brush 3 30 To Replace Side Brush 3 30 To Adjust Side Brush Maximum Height 3 31 To Ad...

Page 10: ...SECTION 1 SPECIFICATIONS CONTENTS Page Machine Specifications 1 1 Machine Dimensions 1 3...

Page 11: ...00 rpm Accessories system rated pressure 2000 psi 13 790 kPa Dump cylinder system rated pressure 500 psi 3450 kPa Propelling motor internal gear motor 29 9 cu in 490 cc displacement per revolution 450...

Page 12: ...5 mm length 50 in 1270 mm Main brush wire diameter 15 in 380 mm length 50 in 1270 mm Side brush rotary diameter 26 in 660 mm Sweeping path width 50 in 1270 mm w o side brush 66 in 1676 mm w side brush...

Page 13: ...92GR MM188 11 87 1 3 MACHINE DIMENSIONS 111 5 in 2830 mm 71 in 1805 mm 90 5 in 2300 mm 81 5 in 2070 mm 108 in 2745 mm 60 5 in 1535 mm TOP VIEW SIDE VIEW 01431...

Page 14: ...92GR MM188 6 87 1 4...

Page 15: ...ine Oil Pressure Gauge 2 8 Steering Wheel 2 8 Brush Pressure Indicator 2 8 Battery Condition Gauge 2 8 Engine Hour Meter 2 8 Side Brush Switch 2 8 Diesel Pre Heat Indicator 2 8 Ignition Switch 2 8 Par...

Page 16: ...c fluid level in the hydraulic fluid reservoir using the sight gauge provided TENNANTr hydraulic fluid is recommended If TENNANTr hydraulic fluid is not available use only new approved hydraulic fluid...

Page 17: ...OLS A B C D E F G H I J 04300 MACHINE COMPONENTS A Operator Seat F Hopper Inspection Door B Instrument Panel G Side Brush C Overhead Guard H Side Brush Height Adjustment Knob D Engine Cover I Hopper S...

Page 18: ...ine Oil Pressure Gauge F Main Brush Power Lift Lever V Steering Wheel G Throttle Lever W Brush Pressure Indicator H Main Brush Pressure Knob X Battery Condition Gauge I Side Brush Lever Y Engine Hour...

Page 19: ...Directional Pedal Neutral Position Adjustment in the Maintenance section WARNING Always use the brake pedal for normal stopping and controlling machine speed on downgrades to prevent loss of machine...

Page 20: ...Position MAIN BRUSH POWER LIFT LEVER The main brush power lift lever raises and lowers the wire brush It has three positions up hold and down To raise the wire brush push the lever into the up positio...

Page 21: ...de brush rotating provided that the main brush is also operating Pulling the control lever back stops the side brush rotation NOTE The side brush will not operate unless the main brush is also operati...

Page 22: ...The clogged dust filter indicator lights when the dust filters become clogged and excessively restrict vacuum air flow Lower the hopper shut off the main brush and vacuum fan and push the dust filter...

Page 23: ...ndercharging are indications that one or more electrical components is in need of repair ENGINE HOUR METER The hour meter records the number of hours the machine has been operated This information is...

Page 24: ...the machine hydraulic system to keep the hopper in the raised position The hydraulic system may leak internally allowing the hopper to lower crushing anything under it TO ENGAGE HOPPER SUPPORT BAR 1...

Page 25: ...S Fuses are a one time circuit protection device designed to stop the flow of current in the event of a circuit overload Never substitute higher value fuses than those specified in this manual Circuit...

Page 26: ...e make sure all safety devices are in place and operate properly Check the foot and parking brakes and the steering control for proper operation Do not start the machine unless you are in the operator...

Page 27: ...aise position 2 Press the side brush position switch back into the up position 3 Move the main brush power lift lever into the up position 4 Move the main brush speed lever into the off position 5 Mov...

Page 28: ...the parking brake before leaving the machine unattended to keep it from creeping or rolling POST OPERATION CHECKLIST ENGINE STOPPED Check skirts for damage wear and adjustment Check for wire or string...

Page 29: ...es worn Replace brushes Brushes not adjusted properly Adjust brushes Debris caught in brush Free mechanism of debris drive mechanism Main brush drive failure See Hydraulic System Trouble shooting Main...

Page 30: ...ecure the machine s position WARNING Always block the machine tires before jacking the machine up to keep it from rolling off jack 4 Use a scissors or hydraulic type jack of adequate capacity to raise...

Page 31: ...cks from the tires MACHINE TIE DOWNS The machine may be tied down at each of the four corners of the machine at the locations specified To tie the machine down use the tie down lug provided A B 01456...

Page 32: ...t sludge and other undesirable deposits from forming 1 Empty the debris hopper 2 Change engine oil 3 Place the main brush height control lever in the raise position 4 Park the machine in a cool and dr...

Page 33: ...92GR MM188 10 87 2 18...

Page 34: ...ce 3 19 Electrical System 3 20 Battery 3 20 Electrical Schematic 3 21 Electrical Schematic Accessories 3 22 Page Belts and Chains 3 23 Engine Fan Belt 3 23 Static Drag Chain 3 23 Debris Hopper 3 24 Ho...

Page 35: ...92GR MM188 11 87 3 65536 Page To Replace Hopper Door Hinge Seal 3 38 Brakes and Tires 3 39 Service Brakes 3 39 Parking Brakes 3 40 Tires 3 40...

Page 36: ...recommended 1 Check the brush pattern for correct brush adjustment 2 Change the hydraulic fluid filter 3 Check the torque of the engine cylinder head cap screws 4 Perform all 50 hour interval lubricat...

Page 37: ...92GR MM188 11 87 3 65538 MAINTENANCE CHART 1 2 3 4 5 6 7 8 9 10 11 12 13 5 14 15 16 17 04305 MAINTENANCE LOCATIONS...

Page 38: ...8 Hydraulic fluid reservoir Check fluid level HYDO 1 17 Hopper dust filter Inspect clean or replace 2 5 Dust seals Check for damage or wear 5 13 Fuel water trap Clean 1 200 Hours 16 Stabilizer leg pi...

Page 39: ...es involved The engine oil capacity is 7 qt 6 6 L with filter REAR WHEEL SUPPORT PIVOT There is a grease fitting which is used to lubricate the rear wheel support pivot bearing Access to the grease fi...

Page 40: ...B 01459 SIDE BRUSH PIVOT PINS A Pivot Pin B Side Brush Motor STABILIZER LEG PIVOT PIN The stabilizer leg pivot pin should be lubricated with a general purpose water resistant lithium base moly disulp...

Page 41: ...ydraulic fluid used must match closely the viscosity specifications given in the chart for TENNANT Hydraulic Fluid as well as the other features described Do not substitute automatic transmission flui...

Page 42: ...ed 1 Stop the engine and engage the machine parking brake WARNING Always stop the machine on a level surface stop the engine and engage the parking brake before working on the machine to keep it from...

Page 43: ...Loosen the cable to increase the machine speed when the hopper is raised A B C D 01463 SPEED LIMITER CABLE A Speed Limiter Cable B Flat Sided Sheave C Cable Adjusting Nut D Directional Pedal HYDRAULI...

Page 44: ...3 65545 92GR MM188 11 87 04307 HYDRAULIC SCHEMATIC...

Page 45: ...leshooting Side brush turns slowly Hydraulic control valve See Hydraulic Components or not at all failure Troubleshooting Hydraulic motor failure See Hydraulic Components Troubleshooting Relief valve...

Page 46: ...ng Gear pump failure See Hydraulic Components Troubleshooting Lift arms binding Replace and or adjust lift arm linkage Hopper door will not roll out Hydraulic control valve See Hydraulic Components fa...

Page 47: ...r worn Replace gerotor set Output shaft failure Replace output shaft and bearings Hydraulic gear pump Pump leaking Install seal kit pump failure Gear set failure Replace gear set Shaft failure Replace...

Page 48: ...ed with an air hose Check them for clogging after every 100 hours of operation Blow out all dust dirt etc between the fins if necessary This should be done only after the radiator has cooled off to av...

Page 49: ...cing the air filter element reset the service indicator by pushing the reset end of the indicator A B C 00212 AIR CLEANER SERVICE INDICATOR A Service Indicator B Red Indicator Window C Indicator Reset...

Page 50: ...gh an overflow pipe FUEL WATER TRAP The fuel water trap separates water from the fuel It is located in front of the radiator Drain the water trap of water daily To drain the water trap loosen the drai...

Page 51: ...leak proof seal After the fuel filter has been reassembled it is necessary to remove air from the fuel system See Bleeding Fuel System FUEL INJECTION PUMP The fuel injection pump controls the engine...

Page 52: ...gn matter entering the system NOTE Electrical equipment such as starters should be shielded during priming to prevent fuel entry Carry out steps 1 and 2 while operating the fuel lift pump priming leve...

Page 53: ...fuel Drain water trap Fuel too thick Change fuel grade Clogged fuel nozzle Clean or replace nozzle Low compression Repair engine Engine overheating Check radiator Check lubricating system Timing wrong...

Page 54: ...ght up to proper operating temperatures To re torque cap screws follow the correct sequence Loosen one head cap screw or riser at a time one quarter turn 90 degrees then re torque it to the correct va...

Page 55: ...r taking hydrometer readings WARNING Avoid contact with battery acid Battery acid can cause severe burns Wash immediately and get medical attention if contact with battery acid occurs If when checking...

Page 56: ...3 65557 92GR MM188 11 87 04309 ELECTRICAL SCHEMATIC...

Page 57: ...92GR MM188 11 87 3 65558 01502 ELECTRICAL SCHEMATIC ACCESSORIES...

Page 58: ...rs of operation Proper belt deflection is obtained when the belt deflects 0 5 in 13 mm from a force of 10 to 12 lb 4 5 to 5 4 kg applied at the midpoint of the longest span A B 00577 ENGINE FAN BELT A...

Page 59: ...e done with the dust filters in the machine WATER Soak the dust filter in a water and mild detergent solution Rinse the dust filter until it is clean The maximum water pressure allowable is 40 psi 275...

Page 60: ...ames of each filter Tighten the bolts 5 Replace the two side L brackets and four filter retaining tabs 6 Reconnect the shaker motor wire connectors 7 Push the hopper cover open lower and store the pro...

Page 61: ...on a level surface stop the engine and engage the parking brake before working on the machine to keep it from rolling 2 Slide a 1 5 in 40 mm thick block under each side of the rear of the hopper This...

Page 62: ...he bolts 3 Loosen the activating arm pinch bolt 4 Hold the stabilizer leg in the fully raised position A B C D 01440 STABILIZER LEG A Stabilizer Leg B Arm C Pinch Bolt D Bumper 5 Position the arm so i...

Page 63: ...rush in the restricted down position Main brush pattern adjustments are made by turning the height adjustment knob behind the side shroud next to the operator s left leg TO REPLACE MAIN BRUSH OR WIRE...

Page 64: ...he brush drive plug and out of the main brush compartment NOTE If the brush dose not come off easily remove the three plastic screws located on the brush drive arm and thread bolts into the holes to p...

Page 65: ...to keep the machine from moving 4 Lower the main brush to the floor for 15 to 20 seconds NOTE If no chalk or other material is available allow the brushes to spin for two minutes 5 Raise the main brus...

Page 66: ...amage Remove any string or wire found tangled on the side brush or side brush drive hub The side brush should be replaced when the remaining brush bristle measures 2 5 in 65 mm in length The side brus...

Page 67: ...hopper support bar before working under a raised hopper Do not rely on the machine hydraulic system to keep the hopper in the raised position The hydraulic system may leak internally allowing the hopp...

Page 68: ...rk the machine on a level surface and engage the parking brake 3 Raise the hopper engage the hopper support bar and lower the hopper onto the support bar 4 Stop the engine WARNING Always engage the ho...

Page 69: ...crushing anything under it 4 Stop the engine WARNING Always stop the machine on a level surface stop the engine and engage the parking brake before working on the machine to keep it from rolling 5 Rem...

Page 70: ...engine 10 Raise the hopper lower the hopper support bar and lower the hopper 11 Stop the engine BRUSH DOOR SKIRTS The brush door skirts are located on the bottom of each of the two brush compartment...

Page 71: ...lts 6 Remove the skirt mounting bracket the rear floor skirt and the brush contact skirt 7 Remove the brush contact skirt from the skirt mounting bracket 8 Mount a new brush contact skirt to the skirt...

Page 72: ...ng plate 7 Install a new seal on the backing plate 8 Bolt the seal and backing plate to the cross shaft 9 Check the seal adjustment as described in To Adjust Hopper Dust Dump Door TO CHECK AND ADJUST...

Page 73: ...chine on a level surface and engage the parking brake 3 Raise the hopper engage the hopper support bar and lower the hopper onto the hopper support bar WARNING Always engage the hopper support bar bef...

Page 74: ...pper door and the hopper Check the seal for wear or damage after every 100 hours of operation TO REPLACE HOPPER DOOR HINGE SEAL 1 Empty the hopper 2 Stop the machine on a level surface and engage the...

Page 75: ...int Brake pads will be permanently damaged requiring replacement Body paint can be damaged also unless you wipe the area with a clean cloth and wash it with soapy solution immediately 1 Make sure that...

Page 76: ...urled knob on the end of the parking brake clockwise If the knob adjustment is inadequate fully loosen the knob loosen the brake cable mounting nuts thread the lower nuts closer to the end of the cabl...

Page 77: ...art 4 1 Metric Bolt Torque Chart 4 1 Bolt Identification 4 1 Thread Sealant and Locking Compounds 4 1 Hydraulic Fitting Information 4 2 Hydraulic Tapered Pipe Fitting NPT Torque Chart 4 2 Hydraulic Ta...

Page 78: ...313 407 424 552 1 00 in 500 650 678 881 757 984 1026 1334 NOTE Decrease torque by 20 when using a thread lubricant METRIC BOLT TORQUE CHART Thread Class 8 8 Class 10 9 Size Torque ft lb Nm Torque ft l...

Page 79: ...____ 0 25 0 44 20 9 ft lb 12 Nm 0 38 0 56 18 20 ft lb 27 Nm 0 50 0 75 16 30 ft lb 41 Nm 0 62 0 88 14 40 ft lb 54 Nm 0 75 1 12 12 70 ft lb 95 Nm 1 0 1 31 12 90 ft lb 122 Nm HYDRAULIC O RING FITTING TOR...

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Tennant 92 GR, Operator'S Manual

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Summary of Contents for 92 GR

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