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CLUTCH AND TRANSMISSIONS 7-40
pipes. If care is taken in removing control valve
body the six (6) check balls will stay in place above
the spacer plate.
CAUTION:
Do not drop manual valve.
5. Remove the governor pipes and manual valve from
control valve body.
Installation
Installation of the control valve body is the reverse of
the removal.
GOVERNOR
Removal
.
1. Remove governor cover attaching screws, cover, and
gasket.
2. Discard gasket.
3. Withdraw governor assembly from case.
Installation
Installation of the governor assembly is the reverse of
the removal. Use a new gasket under the governor
cover.
MODULATOR AND MODULATOR VALVE
Removal
1. Remove modulator assembly attaching screw and
retainer.
2. Remove modulator assembly from case. Discard
"O" ring seal.
3. Remove modulator valve from case.
Installation
Installation of the modulator assembly and modulator
valve is the reverse of the removal. Use a new "O" ring
seal on the modulator assembly.
PARKING LINKAGE
Removal
1. Remove bottom pan and oil strainer.
2. Unthread jam nut holding detent lever to manual
shaft.
3. Remove manual shaft retaining pin from case.
4. Remove manual shaft and jam nut from case.
NOTE:
DO NOT remove manual shaft seal un-
less replacement is required.
5. Remove parking actuator rod and detent lever as-
sembly.
6. Remove parking pawl bracket attaching screws and
bracket.
7. Remove parking pawl return spring.
NOTE:
The following steps should not be com-
pleted unless part replacement is required.
8. Remove parking pawl shaft retainer.
9. Remove parking pawl shaft, cup plug, parking pawl
shaft, and parking pawl.
Installation
Installation of the parking linkage is the reverse of the
removal. Use new seal and cup plug, if removed, and
new bottom pan gasket.
REAR SEAL
Removal
1. Remove propeller shaft.
2. Pry seal out with screw driver.
Installation
1. Using Tool J-5154 or J-21359 install new seal.
2. Re-install propeller shaft.
OTHER SERVICE WITH TRANSMISSION IN VEHICLE
The following operations when done as single opera-
tions and not as part of a general overhaul should, as a
practical matter, be performed with the transmission in
the. vehicle. Refer to the "Transmission Disassembly
and Reassembly" section of the Overhaul Manual for
service procedures.
a. Oil filler pipe and "O" ring seal.
b. Oil pan and gasket.
c. Down shift solenoid or connector.
d. Valve body spacer plate, gasket and check balls.
e. Front accumulator piston.
f. Rear servo and rear accumulator assembly.
g. Rear band apply checking with Tool J-21370.
Ji. Front servo assembly.
i. Speedo driven gear.
j . Case extension or gasket.
k. Strainer and "O" ring.
TRANSMISSION REPLACEMENT
Before raising the car, disconnect the battery and re-
lease the parking brake.
1. Remove propeller shaft.
8.
2. Disconnect speedometer cable, electrical lead to case
9.
connector, vacuum line at modulator, and oil cooler
10.
pipes.
3. Disconnect shift control linkage.
4. Support transmission with suitable transmission jack.
11.
5. Disconnect rear mount from frame crossmember.
6. Remove two bolts at each end of frame crossmember
12.
and remove crossmember.
7. Remove oil cooler lines, vacuum modulator line,
speedo cable, and detent solenoid connector wire at
transmission.
Remove converter under pan.
Remove converter to flywheel bolts.
Loosen exhaust pipe to manifold bolts approximately
1/4 inch, and lower transmission until jack is barely
supporting it.
Remove transmission to engine mounting bolts and
remove oil filler tube at transmission.
Raise transmission to its normal position, support
engine with jack and slide transmission rearward
from engine and lower it away from vehicle.
CHEVROLET CHASSIS SERVICE MANUAL
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