Mitsubishi 3000GT 1991 Service Manual page 492

AUTOMATIC TRANSAXLE - Troubleshooting
Symptom Possible cause
a. Plugged oil filter
are low (or high). b. Improperly adjusted regulator
NOTE:
Line pressures are
and @shown on
the Standard Oil
Pressure Table e. Improper oil pump delivery.
on the preceding
2. Improper reducing
a. Plugged reducing pressure
pressure
b. Improperly adjusted reducing
c. Defective valve body assembly
3. Improper K/D a. Defective seal ring @ and D-ring @
brake pressure of K/D servo piston and seal ring
(application)
a. Defective seal ring @ and D-ring @
brake pressure
of K/D servo piston and seal ring
(release)
b. Defective valve body assembly
a. Defective seal ring @and D-ring @
clutch pressure of K/D servo piston and seal ring
c. Worn front clutch piston and
retainer or defective D-ring @
or seal ring @
a. Defective D-ring @ of piston,
rear clutch seal ring @ of retainer,
pressure and seal ring @and D-ring @
of input shaft
a. Defective seal ring 0. D-ring 0,
end clutch
and oil seal (iJ of end clutch
pressure
b. Defective valve body assembly
8. Improper
a. Damaged O-ring between valve
low-reverse body and transmission
brake pressure
or O-ring @I of center support
3. Improper a. Sticking damper clutch control
torque converter solenoid valve (DCCSV) or damper
pressure clutch control valve
b. Plugged or leaky oil cooler and
pipings
c. Damaged seal ring @of input shaft
INADEQUATE OIL PRESSURE
valve line pressure
pressure
circuit filter (L-shaped)
pressure
TSB Revision
Remedy
a. Visually check oil filter and replace it if plugged.
sure) and readjust line pressure if it is
out of specifications.
Or, replace valve body assembly.
bolt to specification.
e. Check oil pump gear side clearance and
replace oil pump assembly as necessary.
a. Disassemble valve body assembly to check
filter and replace filter if it is plugged.
as necessary.
c. Replace valve body assembly.
a. Disassemble K/D servo and check seal ring
and D-ring for damage. Replace seal ring
or D-ring if damaged or scratched.
b. Replace valve body assembly.
a. Disassemble KID servo and check seal ring
and D-ring for damage. Replace seal ring
or D-ring if damaged or scratched.
a. Disassemble K/D servo and check seal ring
and D-ring for damage. Replace seal ring
or D-ring if damaged or scratched.
b. Replace valve body assembly.
piston and retainer for wear and D-ring and
seal ring for damage. Replace piston, retainer,
D-ring, or seal ring as necessary.
a. Disassemble rear clutch and check input shaft
D-ring, center support seal ring, and piston
D-ring; replace if damaged or scratched.
a. Disassemble the end clutch and check piston oil
seal, D-ring, and center support seal ring;
replace if damage or scratches are evident.
b. Replace valve body assembly.
a. Remove valve body assembly and check O-ring
on top of upper valve body; replace if damage
or scratches are evident.
c. Disassemble transaxle and check D-ring and
O-ring; replace if damage or scratches are eviden
a. Check damper clutch system and DCCSV
for operation.
b. Repair or replace cooler or pipings.
c. Disassemble transaxle and check seal ring;
replace if it is damaged.
d. Replace torque converter.
(KID brake pres-