Mitsubishi 3000GT 1991, Руководство по обслуживанию

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