JLG G5-18A Service Manual page 116

Axles, Drive Shafts, Wheels and Tires
5.3.7 Axle Assembly and Drive Shaft Troubleshooting (Continued)
Problem
7. Axle overheating.
8. High steering effort required.
9. Slow steering response.
10. Excessive noise when brakes
are engaged.
11. Brakes will not engage.
12. Brakes will not hold the
machine or braking power
reduced.
5-8
Cause
1. Oil level too high.
2. Axle and/or wheel end housings
filled with incorrect oil or oil
contaminated or oil level low.
1. Steering (hydraulic) system not
operating properly.
2. Excessive joint housing swivel
bearing preload.
3. Worn or damaged swivel
bearings.
1. Steering (hydraulic) system not
operating properly.
2. Steering cylinder leaking
internally.
1. Brake discs worn.
2. Brake discs damaged.
1. Brake (hydraulic) system not
operating properly.
2. Brake piston o-rings and seals
damaged (leaking).
1. Brake discs worn.
2. Brake (hydraulic) system not
operating properly.
3. Brake piston o-rings and seals
damaged (leaking).
Remedy
1. Fill oil to correct level with
Mobilfluid® 424 Tractor
Hydraulic Fluid. (Refer to
Section 2.3, "Fluids, Lubricants
and Capacities.")
2. Drain axle and/or wheel end
housing and fill to correct level
with Mobilfluid® 424 Tractor
Hydraulic Fluid. (Refer to
Section 2.3, "Fluids, Lubricants
and Capacities.")
1. Refer to the appropriate Dana
Repair Manual.
2. Correct bearing preload by
adding or removing shims as
needed.
3. Replace swivel bearings as
needed.
1. Refer to the appropriate Dana
Repair Manual.
2. Repair or replace steering
cylinder as needed.
1. Check brake discs for wear.
Refer to appropriate Dana
Repair Manual.
2. Replace brake discs.
1. Refer to the appropriate Dana
Repair Manual.
2. Replace o-rings and seals.
1. Check brake discs for wear.
Refer to the appropriate Dana
Repair Manual.
2. Refer to the appropriate Dana
Repair Manual.
3. Replace o-rings and seals.
G5-18A, 2505