Mitsubishi 1989 Galant, Service Manual

Page: 762 / 1273

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AUTOMATIC TRANSAXLE Troubleshooting
Trouble symptom
6. Improper
reverse brake
pressure
Probable cause
a. O-ring between valve body and
transaxle damaged or missing
b. Looseness of valve body tighten-
ing part
c. Functional malfunction of the
valve body assembly
d. Malfunction of the D-ring of the
low-reverse brake piston or the
O-ring of the retainer (Refer to
the figure below.)
a. Sticking of the torque converter
clutch (TCC) solenoid or torque
converter clutch (TCC) control
valve.
b. Clogging or leaking of the oil
cooler and/or piping
c. Damaged seal ring of the input
shaft (Refer to the figure above.)
d. Malfunction of the
ter
7. Improper torque
converter pressure
D-ring
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 damage.
d.
Replace the torque converter.
ring
@O-ring
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