JLG 110HX ANSI Service Manual - Manual (Page 133)

SECTION 3 - TROUBLESHOOTING
3120636 – JLG Lift – 3-13
Relief valve improperly set or not functioning
properly. Reset, repair or replace valves as required.
Steer cylinder not functioning properly. Repair or replace cylinder.
Machine will not steer left or to the right.
Wiring on control switch is damaged. See proper wiring diagram.
Wiring on solenoid valve damaged. Repair or replace wiring.
Coil in solenoid damaged. Replace coil.
No oil flow or pressure to steer circuit. Take pressure reading at steer valve and adjust
as necessary.
Bent cylinder rod. Repair or replace cylinder.
Damaged tie rod. Replace tie rod.
Crossover relief valve sticking. Repair crossover relief valve.
Cylinder packing defective. Repair or replace cylinder.
Machine wanders; steering not firm.
Crossover relief valve set too low or not function-
ing properly. Reset, repair or replace valve as required.
Steer linkages loose. Tighten linkage.
Steer wheel toe-in not set properly. Adjust toe-in for 1/4 inch overall.
Spindle bushings badly worn. Replace bushings.
Swivel seals leaking Repair swivel leak.
Table 3-4. Chassis Assembly - Troubleshooting
TROUBLE PROBABLE CAUSE REMEDY