Case 580SR Service Manual page 376

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1.3 FAULT FINDING
Wheel vibration; front tyre resistance; half shaft
breakage
Steering is difficult; vehicle goes straight while it's
turning
Transmission excessively noisy
Uneven wear of tyre
Friction noise
Vibration during forward drive, intermittent noise
1. Incorrect installation / defective axle
Correct installation or repair or replace the differential in case it does not survive any one of the test phases.
2. Overloading / incorrect weight distribution
Remove excessive weight and redistribute load, following instructions related to the vehicle.
3. Different rotation radius of the tyres
If one tyre has a smaller radius, it will cause partial wheel slipping when force is applied. The other tyre with
bigger radius will have to support all the work. Replace the tyre or adjust pressure to have same radius on both
tyres.
4. Broken half shaft
It is not advisable to operate the vehicle with a broken half shaft. It is acceptable to move the vehicle (engine
off unloaded) a few metres away only.
5. Bent half shaft
Replace the half shaft.
6. Incorrect wheel adjustment
Verify group integrity and wheel side bearings.
Adjusting according.
7. Damaged or worn axle parts
Check the bearings conditions, etc.
Replace whenever necessary.
8. Contamination in the axle box or incorrect assembly of parts
Look for foreign particles.
Check assembly of the various parts of the axle.
9. Incorrect use of the product
See the vehicle Manufacturer's instructions once again.
SECTION 25 - FRONT AXLES
PROBLEM CAUSE
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