Common Faults & Troubleshooting - Chery A21 2005 Service Manual

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