Greenlee GPU 18-8 Operation, Service And Parts Instruction Manual Download Page 12

12

GPU 18-8 Hydraulic Power Unit

Maintenance (cont’d)

Battery

Stop engine when checking battery
electrolyte level. Do not check or fill
battery electrolyte level near an open
flame, sparks, or when smoking.
Battery fumes are flammable and
explosive, and if ignited will result in
severe injury or death.

When working on or around the battery:

• Remove jewelry, wristwatches and any other

conductive items. The current produced by the
battery can cause severe burns.

• Wear eye protection and gloves and handle the

battery carefully. Contact with battery acid can
cause severe burns or blindness.

Failure to observe these warnings could result in
severe injury or death.

Pneumatic Tires

Inflate power unit tires to the recommended pressure
printed on the sidewalls of the tires. Do not exceed tire
manufacturer’s recommended maximum pressure
printed on the sidewalls of the tires or rim
manufacturer’s recommended maximum pressure
stamped on the rim, whichever is lower.

Battery Maintenance and Replacement

Battery is a utility style, lead acid type. Check battery
electrolyte level at least once a month. Stop power unit
engine when checking battery electrolyte level. If
electrolyte level is low, fill to required level using distilled
water only. Clean battery terminals and cable clamps
when required. After cleaning, coat battery terminals and
cable clamps with grease or other suitable product to
reduce corrosion. When battery replacement becomes
necessary, it is recommended that replacement battery
should meet or exceed original battery specifications;
amps, cranking power, etc.

Summary of Contents for GPU 18-8

Page 1: ...008 5 REV 3 6 97 Read and understand this material before operating or servicing this power unit Failure to understand how to safely operate this power unit could result in an accident causing serious...

Page 2: ...ore returning a tool for warranty service To insure correct and prompt shipment of parts always provide the following information when ordering 1 Quantity of each part wanted 4 Serial Number of tool 2...

Page 3: ...raulic fluid is hot Exposure to hot hydraulic fluid can cause serious burns Failure to observe these warnings could result in severe bodily injury Electrical Shock Hazard When using this unit near ene...

Page 4: ...Inspect the hydraulic hoses and couplings every operating day Repair or replace if leakage cracking wear or damage is evident Damaged hoses or couplings can fail resulting in injury or property damag...

Page 5: ...ometer 7 Oil Cooler 2 Gasoline Engine 8 Control Panel 3 Retractable Handles 9 Flow ON OFF Handle 4 Hydraulic Oil Filter 10 Tool Connection Pressure 5 Fuel Fill Cap 11 Tool Connection Return 6 Hydrauli...

Page 6: ...Hose assemblies and quick connect couplers are available from Greenlee Fairmont as accessories SEE BULLETIN ON GREENLEE FAIRMONT NO DRIP COUPLERS AND HOSES CONTACT AUTHORIZED GREENLEE FAIRMONT DISTRI...

Page 7: ...nect the pressure supply hose from the power unit pressure port to the tool pressure port P Disconnecting Hoses See Figures 1 2 and 3 1 Stop the power unit hydraulic flow 2 Disconnect the pressure sup...

Page 8: ...es can cause serious burns Do not let the power unit engine run unattended The engine must be monitored so that it can be shut down immediately in case of a malfunction Failure to observe this warning...

Page 9: ...ns 3 Check hydraulic reservoir oil level Fill to FULL mark on dipstick See Maintenance See Recommended Hydraulic Fluids for correct hydraulic fluid 4 Verify that all current maintenance has been perfo...

Page 10: ...Do not use fingers or hands to check for leaks Depressurize hydraulic system before servicing Stop engine before filling fuel tank Do not fill fuel tank when engine is hot Do not fill fuel tank near...

Page 11: ...system hoses and fittings for signs of leaks cracks wear or damage Replace if necessary Every 25 Hours 1 Service engine air cleaner pre cleaner See Engine Manual Every 50 Hours 1 Change engine crankca...

Page 12: ...ower unit tires to the recommended pressure printed on the sidewalls of the tires Do not exceed tire manufacturer s recommended maximum pressure printed on the sidewalls of the tires or rim manufactur...

Page 13: ...Disconnect the existing tool from the hoses and power unit 2 Connect a known working tool to the hoses and power unit See the tool s operator s manual for correct hookup procedure Start the power unit...

Page 14: ...k wires and connections connection Repair or replace See engine operator s manual Engine lacks power runs rough See engine operator s manual backfires etc Tool used with power unit is Flow ON OFF valv...

Page 15: ...hydraulic filter Power unit components pump valve Repair or replace components etc worn or damaged Engine output insufficient Engine See engine operator s manual needs adjustment tune up etc Tool use...

Page 16: ...Power Unit 31 32 33 34 2b 2a 30 55 29 56 25 40 41 39 26 38 36 35 25 26 28 37 59 27 62 24 25 26 28 17 18 19 20 21 22 23 9 10 11 12 13 2 7 6 8 3 4 5 60 14 15 16 43 42 25 26 1 50 49 44 45 25 26 28 63 46...

Page 17: ...25 F024672 Cap Screw 1 4 x 1 1 2 Button Skt Hd 15 26 F013588 Light Hex Stop Nut 1 4 21 27 49130 Tube Assembly 1 28 F001050 Washer 1 4 17 29 49133 Control Panel 1 30 F024678 Fuel Tank Cap 1 31 F024674...

Page 18: ...ulic Power Unit GPU 18 8 Hydraulic Power Unit Hydraulic Components and Piping OIL COOLER 11 20 27 2 4 USE SILICON SEALER 3 1 26 12 16 5 6 17 24 25 17 21 11 29 15 HYDRAULIC PUMP 28 18 11 13 17 22 19 7...

Page 19: ...mp 4 12 F022988 Hose Clamp 2 13 F022687 Relief Valve 1 14 F024695 90 Elbow 3 4 M NPT x 3 4 ID Hose 2 15 F024676 90 Elbow 1 2 F NPT x 7 8 M STR 1 16 F024677 90 Elbow 1 1 16 M JIC x 1 Hose 1 17 F013468...

Page 20: ...155785 Wire Assembly 1 7 F020627 Battery Hold Down 1 9 F030028 Machine Screw 8 x 1 1 4 2 10 F030029 Lock Washer 8 2 11 F005273 Hex Nut 8 2 12 170061 Tube 2 13 F030027 Hour Meter Tach 1 GROUND TO ENGIN...

Page 21: ...size of the components must be adequate to keep pressure losses to a minimum and avoid damage to the hose due to heat generation or excessive turbulence 2 6 Routing Attention must be given to optimum...

Page 22: ...proper function and freedom from leaks Note Avoid potential hazardous area while testing 4 MAINTENANCE Even with proper selection and installation hose life may be significantly reduced without a con...

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