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7A4-48
1977 PONTIAC SERVICE MANUAL
Fig. 7A4-96 Installing Forward Clutch Pack
9. Remove outer seal from piston.
10. Remove inner seal from piston.
Fig. 7A4-97 Air Checking Forward Clutch
SNAP RING
ig. 7A4-98 Removing or lnstalling Clutch Retainer Snap
Ring
check ball.
NOTE: The production built direct clutch piston will
be aluminum or stamped steel.
11. Remove center piston seal from direct clutch
housing.
INSPECT DIRECT CLUTCH AND
ROLLER
1. Inspect roller assembly for popped or loose rollers.
2. Inspect inner cam and outer race for scratches or
wear.
3. Inspect clutch housing for cracks, wear, proper
opening of oil passages or wear on clutch plate drive lugs.
4. Inspect composition faced and steel clutch plates for
sign of wear or burning.
5 ,
Inspect backing plate for scratches or other damage.
6. Inspect clutch piston for cracks.
7. Inspect springs for collapsed coils or signs of
distortion.
8. Inspect housing for free operation of check ball.
NOTE: The fourteen (14) direct clutch release springs
are not serviced. If one of more of these springs require
replacement, discard all of them and install the sixteen
(16) service direct clutch springs.
ASSEMBLE DIRECT CLUTCH AND
ROLLER
1. Install a new inner clutch piston seal on piston, with
lip facing away from spring pockets (Fig. 7A4-104).
NOTE:
Apply Hydra-Matic oil to all seals.
2. Install a new outer clutch piston seal with lip facing
away from spring pockets (Fig. 7A4-105).
C A U T I 0 N
:
Production built transmissions use a
direct clutch housing with a check ball (Fig.
7A4-
106). If the housing requires replacement and the
replacement housing does not contain a check bald
replace the direct clutch piston with the service
piston which has a check ball. EITHER THE
DIRECT CLUTCH HOUSING AND/OR THE
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