Chevrolet Chevelle 1977 Repair Manual page 351

Fig. 7 A - 9 8 C --ln s ta llin g Dir e ct Clu tch Center Seal
The direct clutch housing for models
CAUTION:
CB, CL and CS use the 6 plate tlutch assembly.
This housing can be identified by the
elimination o f the inside diameter chamfer on the
clutch plate end and/or a groove in the face at the
base o f the tower (Fig.
replacement o f the direct clutch housing become
necessary extreme care must be taken in obtaining
,
the correct part for the model involved.
Production built transmissions use a direct
clutch housing with a check ball (See Fig. 7A-
100C). I f the housing requires replacement and the
replacement housing does not contain a check ball,
replace the direct clutch piston with the service
piston which has a check ball (Models CL and CZ
service piston has 2 check balls). EITHER THE
D IREC T CLUTCH HOUSING AN D /O R THE
PISTON M UST CO NTAIN A CHECK BALL(S).
4. Place seal protectors, Tools J-2 1362 Inner, J-21409
C H A M F E R F O R
ID E N T IF IC A T IO N
D IR E C T C L U T C H H O U S IN G
F O R 4 O R 5 P LA TE P A C K
Fig. 7A-99C--Direct Clutch Housing Identification
AUTOMATIC TRANSMISSIONS
CLUTCH
CENTER SEAL
7A-99C). Should
F O R ID E N T IF IC A T IO N -
D IR E CT C LU T C H H O U S IN G
F O R 6 PLA TE C LU T C H P A C K
CHECK BALL
DIRECT
CLUTCH
HOUSING
Fig. 7 A - 1 0 0 C - D i r e c t C lu tch H ousin g w it h Ch e ck Ball
Fig. 7 A - 1 0 1 C -- ln s t a llin g Dir ect Clu tch Piston
BLIND HOLES
DIRECT CLUTCH
Fig. 7A-1 02 C -F orw a rd and Direct Clutch Piston Identification
(400)7A-31
J-21362
J-21409
FORWARD CLUTCH