Transmission In Holding Fixture; Removing Vacuum Modulator; Removing Extension Housing Lip Seal; Removing Governor Cover - Pontiac TRANS AM 1977 Service Manual

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TURBO HYDRA-MATIC 2 5 0 TRANSMISSION
7A2-17
Fig.
7A2-12
Removing Vacuum Modulator
REMOVAL OF EXTENSION,
SPEEDOMETER DRIVEN GEAR,
GOVERNOR, OIL PAN AND SCREEN
1. Remove four extension to case attaching bolts.
2. Remove extension from case and remove square cut
"0"
ring seal from extension housing.
3. Remove extension housing lip seal, using screw driver
(Fig. 7A2- 13).
4. Install speedometer drive gear remover Tool J 2 1427-
01 and J 9539 bolts with J 8105, or suitable puller, on output
shaft and remove speedometer drive gear. Remove retaining
clip.
5. Remove governor cover retainer with a screw driver.
6. Using a screwdriver and hammer, gently tap along
governor cover lip (Fig. 7A2- 14), remove governor cover and
"0"
ring seal (Fig. 7A2-15). Discard seal.
I
EXTENSION HOUSING
Fig.
7A2-13
Removing Extension Housing Lip Seal
Fig.
7A2-1 1
Transmission In Holding Fixture
Fig.
7A2-14
Removing Governor Cover
CAUTION: Do not attempt to pry screwdriver
between case and governor cover as this could
cause damage to case.
7. Withdraw governor assembly from case (Fig. 7A2-16)
and check governor bore and governor sleeve for scoring.
8. Remove oil pan attaching screws (Fig. 7A2-17), oil
pan and gasket. Discard gasket.
9. Remove oil pump suction screen (strainer) to valve
body attaching screws (Fig. 7A2- 18).
10. Remove oil pump screen (strainer) and gasket from
valve body.

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Firebird 1977

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