Remedial Steps If Oil Pressure Is Not Normal - Mitsubishi 1989-1993 GALANT Service Manual

AUTOMATIC TRANSAXLE - Troubleshooting

Remedial Steps If Oil Pressure Is Not Normal

FWD A/T
Trouble symptom
Probable cause
a.
are all low (or high).
b.
NOTE
*"Line pressures"
refers to oil ress-
6
c.
oil pressure table"
on the previous
d.
2. Improper reducing
a.
pressure
d.
3. Improper kick- a.
down brake press-
ure
a.
clutch pressure
b.
c.
d.
a.
clutch pressure
b.
Clogging of oil filter
Improper adjustment of oil press-
valve
Sticking of regulator valve
Looseness of valve body tighten-
ing part
Improper oil pump dischange
pressure
Improper line pressure
Clogging of the filter (L-shaped
type) of the reducing-pressure cir-
Improper adjustment of the re-
Sticking of the reducing valve
Looseness of valve body tighten-
ing part
Malfunction of the D-ring or seal
ring of the sleeve or kickdown
servo piston.
Looseness of valve body tighten-
ing part
Functional malfunction of the
valve body assembly
Malfunction of the D-ring or seal
ring of the sleeve or kickdown
servo piston.
Looseness of valve body tighten-
ing part
Functional malfunction of the
valve body assembly
Wear of the front clutch piston or
retainer, or malfunction of the @
D-ring. @ seal ring.
Refer to the figure on the next
page.)
Malfunction of a D-ring @or oil
seal 0.0 of the end clutch or
O-ring 8 of the pipe (Refer to
the following figure.)
Looseness of valve body tighten-
ing part
Functional malfunction of the
valve body assembly
TSB Revision
Remedy
a. Visually inspect the oil filter; replace the oil filte
if it is cl,ogged.
Measure line pressure @ (kickdown brake
pressure); if the pressure is not the standard
value, readjust the line pressure, or, if neces-
Check the operation of the regulator valve;
repair if necessary, or replace the valve body
assembly.
d. Tighten the valve body tightening bolt and
installation bolt.
Check the side clearance of the oil pump gear;
replace the oil pump assembly if necessary.
a. Check the @ kickdown brake pressure /line
pressure); if the line pressure is not the
standard value, check as described in item 1
above.
b. Disassemble the valve body assembly and
check the filter; replace the filter if it is clogged.
c. Measure the @ reducing pressure; if it is not
the standard value, readjust, or replace the
valve body assembly.
Check the operation of the reducing valve; if
necessary, repair it, or replace the valve body
assembly.
Tighten the valve body tightening bolt and
installation bolt.
a. Disassemble the kickdown servo and check
whether the seal ring or D-ring is damaged.
If it is cut or has scratches, replace the seal ring
or D-ring.
b. Tighten the valve body tightening bolt and
installation bolt.
c. Replace the valve body assembly.
a. Disassemble the kickdown servo and check
whether the seal ring or D-ring is damaged.
If it is cut or has scratches, replace the seal ring
or D-ring.
b. Tighten the valve body tightening bolt and
installation bolt.
c. Replace the valve body assembly.
d. Disassemble the transaxle itself and check
whether or not there is wear of the front clutch
piston and retainer inner circumference, or
damage of the D-ring. If there is any wear or
damage, replace the piston, retainer, D-ring
a. Disassemble the end clutch and check the oil
seal, D-ring of the piston, seal ring of the
retainer, etc.; replace if there are cuts, scars,
scratches or damage.
b. Tighten the valve body tightening bolt and
installation bolt.
Replace the valve body
c. assembly.