JLG 150HAX ANSI Service Manual User Manual
Page 136
SECTION 6 - SCHEMATICS
6-8
– JLG Lift –
3120679
.
Table 6-3.Turntable - Troubleshooting
TROUBLE
PROBABLE CAUSE
REMEDY
POWER PLANT
Engine will not start.
Station power selector switch not in required
position.
Actuate switch as required.
Circuit breaker open.
Determine and correct cause; reset circuit
breaker.
Defective starter motor.
Replace starter motor.
Fuel shutoff solenoid defective.
Replace solenoid.
Damaged wiring in ignition circuit (broken wire
on starter).
Repair or replace wiring.
Ignition switch not functioning properly.
Replace switch.
Defective start solenoid.
Replace start solenoid.
Starter relay defective.
Replace starter relay.
Ignition circuit shorted to ground.
Repair circuit as required.
Battery cable(s) not making contact.
Clean and tighten cable(s).
.Engine will not start. (Ignition O.K.)
No fuel.
Replenish fuel as necessary.
Restricted or broken fuel line.
Clean or replace fuel line.
Battery defective or discharged.
Replace or charge battery, as required.
Fuel pump not working.
Replace fuel pump.
.Engine will not accelerate above low
speed.
Damaged wiring on speed control switch or gov-
ernor solenoid.
Repair or replace wiring.
Speed control switch not functioning properly.
Replace switch.
Governor not functioning properly.
Repair or replace governor.
Boom horizontal limit switch not functioning
properly or improperly adjusted.
Adjust, repair or replace switch.
Control handle micro switch not functioning
properly.
Repair or replace control handle.