JLG 120HX Service Manual User Manual
Page 102
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SECTION 3 - TROUBLESHOOTING
3-16
– JLG Lift –
3120819
Damaged wiring on control switch or auxiliary
pump.
See proper wiring diagram.
Control switch not functioning properly.
Replace switch.
Restricted or broken hydraulic line or fitting.
Clean, repair or replace line or fitting.
Pump motor solenoid not functioning properly.
Replace solenoid.
Pump motor not functioning properly.
Repair or replace motor.
Table 3-5.Hydraulic System - Troubleshooting
TROUBLE
PROBABLE CAUSE
REMEDY
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