Pressing Turbine Shaft From Clutch Housing; Removing Or Installing Spring Retainer Shap Ring; Removing Or Installing Clutch Piston Seals; Removing Or Installing Clutch Housing Center Seal - Pontiac TRANS AM 1977 Service Manual

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TURBO HYDRA-MATIC 4 0 0 AUTOMATIC TRANSMISSION
7A4-47
Fig.
7A4-9 1
Pressing Turbine Shaft From Chtch Housing
amcH
OUTER
2665
Fig.
7A4-93
Removing or Installing Clutch Piston Seals
2. Remove clutch outer race and roller assembly.
3. Turn unit over and remove backing plate-to-direct
clutch housing snap ring (Fig. 7A4-99).
4. Remove the direct clutch backing plate.
Fig.
7A4-94
Removing or Installing Clutch Housing
Center Seal
Fig.
7A4-95
Installing Forward Clutch Piston
5. (Models PC, PD and OC)
-
Remove five (5)
composition-faced and five (5) flat steel clutch plates from the
direct clutch housing (Fig. 7A4-100).
(Models PA, PB and OB)
-
Remove four (4)
composition-faced and four (4) flat steel clutch plates from
the direct clutch housing (Fig. 7A4-100).
6. Using Compressors
J
4670,
J
6129 and Ring
J
8766,
compress spring retainer and remove snap ring (Fig. 7A4-
101).
7. Remove retainer and fourteen (14) piston release
springs.
C A U T I 0 N : Keep piston release spnngs separate
fiom forward clutch release springs.
8. Remove direct clutch piston (Fig. 7A4-102).
NOTE: The production built transmissions use a direct
clutch piston without a check ball. The forward and
direct clutch pistons look almost the same. Make sure
the direct clutch piston is identified during disassembly
so it will be re-assembled into the direct clutch housing.
The service replacement direct clutch piston contains a

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Firebird 1977

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