
CHERY A520 SERVICE MANUAL QR519 TRANSMISSION
39
XI COMMON FAULTS & TROUBLESHOOTING
Fault
Possible cause
Troubleshooting
Damaged
input
or/and
output
shaft
bearing(s)
Replace the bearing
Gear tooth faces damaged due to knocking,
burr or pit corrosion existing, or poor
contact between them.
Repair or replace the gear
Incorrect gear shaft position and clearance
Check and adjust
Low oil level, insufficient lubrication
Fill oil to the specified
level
Excessive
or
abnormal noise
Foreign matter(s) existing in the assembly
Check and remove
Excessively worn or damaged oil seal(s)
Replacement
Uneven sealant smearing or damaged seal
gasket(s)
Replace
the
seal
gasket(s) or sealant
Failure to timely recondition junction
surface(s) damage due to knocking
Check and repair
Oil leakage
Damaged differential bearing
Replacement
Improper clutch adjustment and incomplete
release.
Adjustment
Improper gearshift transmission system
adjustment
or
movement
obstruction
occurring
Check and adjust
Difficult
to
implement
gear
shift
Synchronizer ring(s) fails to work
Replacement
Worn synchronizer gear sleeve(s) or tooth
cone surface(s) of gear junction
Replace
related
components
Gear jump
Improper gearshift transmission system
adjustment
Check and adjust
Loose gearshift transmission system
Overhauling
No gear
Loose gearshift arm of transmission
Repair
Metal impurities contained in transmission
oil
Replacement
Insufficient
lubrication
or
unqualified
transmission oil
Replacement
Abnormally
damaged
bearing(s)
Using of unqualified bearing(s)
Replacement
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Summary of Contents for A21 2005
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