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7A2-16
1977 PONTIAC SERVICE MANUAL
UNIT REPAIR
2. Position spring, "0" ring seal and cover in place.
3. Press in cover with J 23069, install retaining ring,
remove tool and install oil pan bolts, torquing to 130 lb. in.
VALVE BODY ASSEMBLY
Removal
1. Referiring to draining procedures, drain transmission
fluid from oil pan.
2. Remove oil pan and strainer. Discard gaskets.
3. Remove detent spring and roller assembly from valve
body and remove valve body-to-case bolts.
4. Remove valve body assembly while disconnecting
manual control valve link from range selector inner lever and
removing detent control valve link from the detent actuating
lever.
5.
Remove manual valve and link assembly from valve
body assembly.
Installation
Installation of valve body assemlby is the reverse of
REMOVAL. Install new gaskets to strainer and oil pan and
adjust fluid level.
MANUAL SHAFT, RANGE SELECTOR
INNER LEVER A N D PARKING LINKAGE
Removal
1. Referring to draining procedures, drain transmission
fluid from oil pan.
2. Remove oil pan, strainer and valve body assembly.
Discard gaskets.
3. Remove manual shaft-to-case reatiner and unthread
jam nut holding range selector inner lever to manual shaft.
4. Remove jam nut and removal manual shaft from range
selector inner lever and case.
NOTE: Do not remove manual shaft lip oil seal unless
replacement is required.
5.
Remove parking pawl actuating rod and range
selector inner lever from case.
6. Remove bolts and parking lock bracket.
7. Remove parking pawl disengaging spring and, if
necessary to replace park pawl or shaft, clean up bore in case
and remove parking pawl shaft retaining plug, park pawl
shaft and pawl.
lnstallation
Installation of parking linkage, selector lever and manual
shaft is the reverse of REMOVAL. Install new plug (if
required), new lip oil seal (if required) and new gaskets.
Adjust fluid level.
REMOVE TRANSMISSION
1. Before raising vehicle, disconnect negative battery
cable, detent downshift cable at carburetor and release
parking brake.
2. Raise vehicle on hoist.
3. Remove propeller shaft.
4. Disconnect speedometer cable, detent downshift cable
and modulator vacuum line at transmission.
5.
Disconnect shift control linkage.
6. Support transmission with suitable transmission jack.
7. Disconnect transmission rear mount from frame
crossmember.
8. Remove two bolts at each end of frame crossmember.
Remove crossmember.
9. Remove converter under pan.
10. Remove converter to flywheel bolts.
11. Lower transmission until jack is barely supporting
it.
12. Remove transmission to engine mounting bolts and
remove oil filler tube at transmission.
13. Raise transmission to its normal position, support
engine with jack and slide transmission rearward from the
engine and lower it away from vehicle.
C AUTI 0 N
:
Use suitable con verter holding tool
when lowering transmission or keep rear of
transmiision lower than front so as not to lose
con verter.
REMOVAL OF CONVERTER AND
V A C U U M MODULATOR
1. Install Holding Fixture J 8763-01 on transmission and
place into Holding Tool base J 3289-14 with converter facing
up (Fig. 7A2-11).
NOTE: Cleanliness is an important factor in the
overhaul of transmission. Before attempting any
disassembly operation, exterior of case should be
thoroughly cleaned and prevent the possibility of dirt
entering the transmission internal mechanism. During
disassembly, all parts should be thoroughly cleaned in
cleaning fluid and then air dried. Wiping cloths or rags
should not be used to dry parts.
CAUTION: Do not use solvents which should
damage rubber seals or clutch facings.
2. With transmission in holding fixture, remove torque
converter assembly.
3. Remove vacuum modulator assembly attaching bolt
and retainer.
4. Remove vacuum modulator,
"0"
ring seal, and
modulator valve from case (Fig. 7A2-12). Discard "0" ring.
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