Greenlee GPU 18-8 Operation, Service And Parts Instruction Manual page 14

GPU 18-8 Hydraulic Power Unit
Troubleshooting
PROBLEM
Engine does not turn over.
Engine turns over, but does
not start.
Engine lacks power, runs rough,
backfires, etc.
Tool used with power unit is
inoperative.
PROBABLE CAUSE
Battery weak or dead.
Battery cables corroded.
Electrical short, broken wire or loose
connection.
Engine starter inoperative.
No fuel in tank.
ON/OFF switch in the OFF position.
Flow ON/OFF handle in the ON
position.
Electrical short, broken wire or loose
connection.
Flow ON/OFF valve in the OFF position.
Tool is a Closed-Center system type.
No hydraulic fluid in system or fluid
level low.
Incorrect hydraulic fluid viscosity.
Hydraulic filter needs service.
Power unit components (pump, valve,
etc.) worn or damaged.
Engine output insufficient. Engine
needs adjustment, tune-up, etc.
14
POSSIBLE REMEDY
Recharge or replace battery.
Clean battery cable terminals or
replace cables.
Check wires and connections.
Repair or replace.
Repair or replace starter.
See engine operator's manual.
Fill fuel tank.
Move switch to the ON position.
Move handle to the OFF position.
Check wires and connections.
Repair or replace.
See engine operator's manual.
See engine operator's manual.
Move flow ON/OFF valve to ON
position.
Use only Open-Center system tools.
Check fluid level. Fill to FULL mark.
Check system for leaks.
Use fluid viscosity recommended.
See Recommended Hydraulic Fluids.
Replace hydraulic filter.
Repair or replace components.
See engine operator's manual.