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4 Troubleshooting and Service Tools
Shown below is a chart of the most common faults occurring to hub assemblies.
Condition
Possible Causes
Hub oil loss
Wheel bearing damaged
Oil loss between
Knocks/Sealant distributed
hub cover and hub
incorrectly during a
previous overhaul
Excessive hub
Slackening
clearance
Abnormal ABS
Abnormal impulses
sensor signal
84
Meritor Wheel end assembly
Checks
Oil loss coming from hub outwards
Check:
- hub nut
Follow instructions from
vehicle manufacturer
Actions Required
Remove wheel end assembly and
replace bearing and any other
damaged parts
Remove hub cover and
correctly reapply sealant.
Check the driveshaft and hub for
integrity and that they are in working
order.
Check bearings for integrity.
Ensure hub nut is correctly tightened.
Ensure correct tighten and locked by
screw or staking.
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