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7-106
GROUP 7- AUTOMATIC TRANSMISSION
transm1sswn fluid pan is accessible
.
2. Drain the fluid from the trans-
mission by loosening the pan attach-
ing bolts starting at the rear of the
pan and working toward the front.
When most of the fluid has drained
from the
pan,
remove the remainder
of the attaching bolts. Remove the
pan and gasket. Discard the gasket. If
the same fluid is to be used again in
the transmission, filter the fluid
through a 100-mesh screen before
in-
stalling it in the transmission. Re-use
the fluid only if it is in good condi-
tion.
3. Disconnect the hose from the
vacuum diaphragm unit. Remove the
diaphragm unit using tool FC0-24.
Do not use any tools on the dia-
phragm housing, such as pliers, pipe
wrenches, etc. Do not allow solvents
to enter the diaphragm unit. Remove
the push rod
.
Remove the fluid screen
retaining clip and the screen.
4. Remove the fluid filter retaining
clip and the filter
.
S. Remove the small compensator
pressure tube
.
Remove the main pressure oil
tube by gently prying up the end that
connects to the main control valve as-
sembly first. Then, remove the other
end of the tube from the pressure re-
gulator. Be sure to remove the tube in
this manner. Failure to do so, could
kink or bend the tube causing exces-
sive transmission internal leakage.
6. Loosen the front servo attaching
bolts three
turns.
7. Remove the three control vaive
body attaching bolts, and lower the
valve body while pulling it off the
front servo tubes.
Be
careful not to
damage the 'alve body or the tubes.
8
.
Before installing the control
valve
body,
check for a bent manual
valve by rolling it on a flat surface.
9. Install the control valve body by
aligning the front servo tubes with the
holes in the valve body. Shift the man-
ual lever to the I detent, and place the
inner downshift
lever between
the
downshift lever stop and the downshift
valve
.
The manual valve must engage
the actuating pin in the manual detent
lever.
10. Install but do not tighten, the
control valve body attaching
bolts.
1). Move the control valve body
toward the center of the case until the
clearance is less than 0.050 inch, be-
tween the manual valve and the act-
uating pin on the manual detent lever.
12. Torque the attaching bolts to
specification. Be sure that the rear
fluid filter retaining clip is installed
under the valve .body bolt as shown in
Figure 35.
13. Install the main pressure oil
tube. Be sure to Install the end of the
tube that connects to the pressure re-
gulator first. Then, install the other
end of the tube into the main control
valve assembly by tapping it gently
with a soft hammer.
Install the compensator pres-
sure tube to the pressure regulator
and the control valve body.
14. Turn the manual valve one full
turn in each manual lever detent posi-
tion
.
If the manual valve binds against
the actuating pin in any detent
posi-
tion, loosen the valve body attaching
bolts and move the body away from
the center of the case
.
Move the valve
body only enough to relieve the bind-
ing.
Torque the attaching bolts and
recheck the manual valve for binding.
IS. Position the push rod in the
bore of the vacuum diaphragm unit.
Using the diaphragm unit as a guide,
insert the push rod into the threaded
opening of the case
.
Torque the dia-
phragm unit to specification
.
Connect
the vacuum hose.
16. Torque the front servo attach-
ing bolts to specification
.
17. Adjust the front band.
18. Install the fluid filter and the
filter retaining clip.
19. Position a new fluid pan gasket
on the bottom of the transmission
case, and install the pan
.
Torque the
pan screws to specification.
'
20. Adjust the rear band.
2 I. Fill the transmission with fluid.
If the fluid that was drained from the
transmission is to
.
be used again, filter
the fluid through a 100-mesh screen as
it is poured back into the transmis-
sion. Re-use the fluid only if it is in
good condition.
22. If the control valve body was
replaced, adjust the transmission con-
trol linkage.
PRESSURE REGULA TOR
REPLACEMENT
I. Drain the fluid from the trans-
mission, and remove the pan and fluid
filter
.
2. Remove the small compensator
pressure tube and the large control
pressure tube from the control valve
body and the pressure regulator.
Remove the main pressure oil
tube by gently prying up the end that
connects to the main control valve as-
sembly first. Then remove the other
end of the tube from the pressure re-
gulator
.
Be sure to remove
the tube in this manner. Failure to do
so, could kink or bend the tube caus.
ing excessive transmission internal
leakage.
3. Remove the pressure regulator
spring retainer, springs, and spacer.
Maintain pressure on the retainer to
prevent the springs from flying out.
4. Remove the pressure regulator
attaching bolts and washers, and re-
move the
regulator.
S.
Position the replacement regula-
tor body on the transmission case and
install the two attaching bolts. Torque
the bolts to
specification.
6. Check the converter pressure and
control pressure valves to be sure the
valves operate freely in the bores.
7. Install the valve springs, spacer,
and retainer.
8. Install the main pressure oil
tube.
Be sure to install the end of the
tube that connects to the pressure re-
gulator assembly first. Then, install
the other end of the tube into the
main control assembly by tapping
it
gently with ·a soft hammer.
Install the small compensator
pressure tube.
9. Install the fluid filter and the
pan, and fill the transmission to the
correct level with the specified fluid
.
FRONT SERVO REPLACEMENT
I. Drain the fluid from the trans-
mission, and remove the pan and fluid
filter.
2. Remove the vacuum diaphragm
unit.
3. Loosen the three control valve
body attaching bolts.
4. Remove the attaching bolts from
the front servo
(Fig.
35), hold the
strut with the fingers, and remove the
servo.
5. To install the front servo, posi-
tion the front band forward in the
case with the end of the band facing
downward. Make sure the front servo
anchor pin is in position in the case
web
.
Align the large end of the servo
strut with the servo actuating lever,
and align the small end with the band
end
.
6. Rotate the band,
strut,
and servo
to align the anchor end of the band
with the anchor in the case.
Push the servo body onto the con-
trol valve body tubes.
7. Install the attaching bolts and
torque to specification
.
8. Torque the control valve body
attaching bolts to specification
.
Check the clearance between the
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