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GENERAL
Remedial Steps If Oil Pressure Is Not Normal
Trouble symptom
Probable cause
Remedy
a. Visually inspect the oil filter; replace
the oil filter if it is clogged.
Measure line pressure 2 (kickdown
brake pressure); if the pressure is not
the standard value, readjust the line
pressure, or, if necessary, replace the
valve body assembly.
c. 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.
e. Check the side clearance of the oil
pump gear; replace the oil pump
assembly if necessary.
a. Clogging of oil filter
d. Looseness of valve body tightening
part
e. Improper oil pump dischange pressure
c. Sticking of regulator valve
b. Improper adjustment of oil pressure
b.
(line pressure) of regulator valve
1. *Line pressures
are all low (or high).
NOTE
*"Line pressures"
refers to oil press-
ures 2, 3, 4 and
5 in the "Standard
oil pressure table"
on the previous
page.
e. Looseness of valve body tightening
e.
b. Clogging of the filter (L-shaped type) of
b.
the reducing-pressure circuit
2. Improper reducing
pressure
a. Improper line pressure
c. Improper adjustment of the reducing
pressure
d. Sticking of the reducing valve
part
a. Check the 2 kickdown brake pressure
(line pressure); if the line pressure is
not the standard value, check as
described in item 1 above.
Disassemble the valve body assembly
and check the filter; replace the filter
if it is clogged.
c. Measure the 1 reducing pressure; if
it is not the standard value, readjust,
or replace the valve body assembly.
d. 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.
b. Looseness of valve body tightening
b.
part
c. Functional malfunction of the valve
c.
body assembly
3. Improper kick-down
brake pressure
a. Malfunction of the O-ring or seal ring
of the
sleeve or kickdown
servo
piston.
a. Disassemble the kickdown servo and
check whether the seal ring or O-ring
is damaged.
If it is cut or has scratches, replace
the seal ring or O-ring.
Tighten the valve body tightening bolt
and installation bolt.
Replace the valve body assembly.
45-33
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