Fault Finding - Case 580SR Service Manual

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FAULT FINDING

Wheel vibration; front tyre resistance; half
shaft breakage
Steering is difficult; vehicle goes straight
while it's turning
No differential action; jamming while
steering
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. Blocked differential
Abnormal functioning of the differential or breakage/blockage of command device. Verify assembly and all
components.
Vehicles with wide steering angle may proceed with kicks, have steering difficulty or cause pneumatic wearing
at sharp turns. Reduce the steering angle to minimum and decelerate when the vehicle begins to kick.
7. Incorrect wheel adjustment
Verify group integrity and wheel side bearings.
Adjusting according.
8. Damaged or worn axle parts
Check the condition of ring gear, pinion gear, bearings etc.
Replace whenever necessary.
9. Contamination in the axle box or incorrect assembly of parts
Look for foreign particles. Check assembly of the various parts of the axle.
10. Incorrect adjustment of the bevel gear set: Parts of the transmission worn out
(Transmission gears, U joints, etc.). Replace or adjust as required.
11. Incorrect use of the product
See the vehicle Manufacturer's instructions once again.
SECTION 25 - FRONT AXLES
PROBLEM CAUSE
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