5A-42 AUTOMATIC TRANSMISSION
Condition
No Drive in D
No Drive in Reverse
No engine braking in Manual 1
Engine braking in Manual 1 is OK
No drive in Drive and Reverse
SYMPTOM DIAGNOSIS
DRIVE FAULTS
Possible Causes
•
Insufficient auto transmission
fluid.
•
Blocked feed in C1/C2 cylinder.
•
'Z' link displaced.
•
Primary Regulator Valve (PRV)
jammed open.
•
Overdrive shaft or input shaft
seal rings failed.
•
3-4 or 1-2 One Way Clutch
(OWC) installed backwards or
failed.
•
C2 piston broken or cracked.
•
Rear band or servo faulty.
•
Failure in C3, C3 hub or C1/C2
cylinder.
•
Damaged input shaft sealing rings.
•
Jammed Primary Regulator
Valve (PRV).
•
Damaged/broken pump gears.
•
Dislodged output shaft snap ring.
Action
•
Check the fluid level. Top up as
necessary.
•
Inspect and clean C1/C2 feed.
•
Reinstall/renew the 'z' link.
•
Remove, clean and re-install the
PRV.
•
Inspect and replace as necessary.
•
Inspect and replace as necessary.
•
Inspect and replace as necessary.
•
Check servo adjustment or
replace rear band as necessary.
•
Check for failure in C3, C3 hub
or C1/C2 cylinder. Repair as
necessary.
•
Inspect and replace as necessary.
•
Inspect and clean PRV.
•
Inspect and replace pump
gears as necessary.
•
Inspect and repair as necessary.
SSANGYONG Y200