User Manual

Axles, Drive Shaft s, Wheels and Tires
5-6
L2906H, 2906H, 3507H, 619A, 723A, 29.6LP, 29.6, 35.7
5.4.6 Axle Assembly and Drive Shaft Troubleshooting
Problem Possible Causes Remedy
1. Excessive axle noise wh ile
driving.
1. Oil level too low. 1. Fill oil to correct level. (Refer to
Section 2.4, “Fluids, Lubricants
and Capacities.”)
2. Axle and/or wheel end housings
filled with incorrect oil or oil level
low.
2. Drain axle and/or wheel end
housings and fill to correct level.
(Refer to Section 2.4, “Fluids,
Lubricants and Capacities.”)
3. Incorrect alignment of ring and
pinion gears.
3. Correct alignment by adding or
removing shims as needed.
4. Incorrect pinion (input) shaft
bearing preload.
4. Correct bearing preload by
adding or removing shims as
needed.
5. Worn or damaged bearings. 5. Replace bearings as needed.
6. Worn or broken gear teeth. 6. Replace gears as needed.
7. Contamination in the axle. 7. Drain axle and/or wheel end
housings and fill to correct level.
(Refer to Section 2.4, “Fluids,
Lubricants and Capacities.”)
8. Axle housing damaged. 8. Replace damaged parts.
2. Intermittent noise when
traveling.
1. Universal joi nt(s ) wor n or
damaged.
1. Repair or replace uni versal
joints as needed.
2. Differential ring and/or pinion
gears damaged.
2. Dete r min e cause and re pair as
needed.
3. Vibration or intermittent noise
when traveling.
1. Drive shaft universal joint(s)
assembly incorrectly tightened.
1. Tighten capscrews to correct
torque.
2. Drive shaft universal joint(s)
worn or damaged.
2. Repair or replace uni versal
joints as needed.
3. Drive shaft damaged/
unbalanced.
3. Replace drive shaft as needed.