JLG 4017 Service Manual - Manual (Page 71)

5.9 4017
Axles, Drive Shafts, Wheels and Tires
7. Axle overheating. 1. Oil level too high.
2. Axle and/or wheel end housings
filled with incorrect oil or oil
contaminated or oil level low.
1. Fill oil to correct level with
Mobilfluid 424® ISO Grade 46.
(Refer toSection 2.4, “Fluids,
Lubricants and Capacities.”)
2. Drain axle and fill to correct level
with Mobilfluid 424® ISO Grade
46. (Refer to Section 2.4,
“Fluids, Lubricants and
Capacities.”)
8. High steering effort required. 1. Steering (hydraulic) system not
operating properly.
2. Excessive joint housing swivel
bearing preload.
3. Worn or damaged swivel
bearings.
1. Refer to Section 8.4, “Hydraulic
Circuits.”
2. Correct bearing preload by
adding or removing shims as
needed.
3. Replace swivel bearings as
needed.
9. Slow steering response. 1. Steering (hydraulic) system not
operating properly.
2. Steering cylinder leaking
internally.
1. Refer to Section 8.4, “Hydraulic
Circuits.”
2. Repair or replace steering
cylinder as needed.
10. Excessive noise when brakes
are engaged.
1. Brake discs worn.
2. Brake discs damaged.
1. Check brake discs for wear.
(Refer to Section 5.6, “Brakes.”)
2. Replace brake discs.
11. Brakes will not engage. 1. Brake (hydraulic) system not
operating properly.
2. Brake piston o-rings and seals
damaged (leaking).
1. Refer to Section 8.4, “Hydraulic
Circuits.”
2. Replace o-rings and seals.
12. Brakes will not hold the
machine or braking power
reduced.
1. Brake discs worn.
2. Brake (hydraulic) system not
operating properly.
3. Brake piston o-rings and seals
damaged (leaking).
1. Check brake discs for wear.
(Refer to Section 5.6, “Brakes.”)
2. Refer to Section 8.4, “Hydraulic
Circuits.”
3. Replace o-rings and seals.
5.3.6 Axle Assembly and Drive Shaft Troubleshooting (Continued)
Problem Cause Remedy