Mitsubishi 1989-1993 GALANT Service Manual page 762

23-56
Probable cause
Trouble symptom
a.
6. Improper low-
reverse brake
pressure
b.
c.
d.
a.
7. Improper torque
converter pressure
b.
c.
d.
AUTOMATIC TRANSAXLE - Troubleshooting
O-ring between valve body and
transaxle damaged or missing
Looseness of valve body tighten-
ing part
Functional malfunction of the
valve body assembly
Malfunction of the D-ring 0 of the
low-reverse brake piston or the
O-ring 0 of the retainer (Refer to
the figure below.)
Sticking of the torque converter
clutch (TCC) solenoid or torque
converter clutch (TCC) control
valve.
Clogging or leaking of the oil
cooler and/or piping
Damaged seal ring Q of the input
shaft (Refer to the figure above.)
Malfunction of the torque'conver-
ter
TSB Revision
Remedy
a.
Remove the valve body assembly and check to
be sure that the O-ring at the upper surface of
the upper valve body is not missing or dam-
aged; install or replace the O-ring if necessary.
b.
Tighten the valve body tightening bolt and
installation bolt.
c. Replace the valve body assembly.
d. Disassemble the transaxle itself and check the
O-ring for damage; replace if there are cuts,
scars, scratches or damage.
a. Check the operation of the torque converter
clutch system and the TCC solenoid.
Repair or replace, as necessary, the cooler
and/or piping.
Disassemble the transaxle itself and check for
damage of the seal ring; replace the seal ring if
there 7s damage.
d.
Replace the torque converter.
@O-ring