Chevrolet 1980 Light Duty Truck Repair Manual page 319

CHAMFER FOR
IDENTIFICATION
DIRECT CLUTCH HOUSING
FOR 4 OR 5 PLATE PACK
F ig . 7 A - 9 9 C ~ D i r e c t C l u t c h H o u s i n g I d e n t i f i c a t i o n
a groove in the face at the base o f the tower (Fig. 7A -
99C). Should replacement o f the direct clutch housing
becom e necessary, extrem e care m ust be taken in
obtaining the correct part for the m odel involved.
Production built transm issions use a direct clutch
housing w ith a check ball (See Fig. 7A -100C ). If the
housing requires replacem ent and the replacement
housing does not contain a check ball, replace the
direct clutch piston w ith the service piston w hich has
a check ball (M odels CB, C D and CL service piston
has 2 check balls). E IT H E R T H E D IR E C T C L U T C H
H O U S IN G A N D /O R
C O N T A IN A C H E C K BA L L(S).
4. Place seal protectors, T ools J-21362 Inner, J-21409
Outer, over hub and clutch housing and install clutch
piston, w ith a rotating m otion (Fig. 7A -101C ).
5. Install fourteen (14) springs into piston leaving two
pockets diagonally opposite w ith no springs.
CHECK BALL
DIRECT
CLUTCH
HO USING
Fig. 7A-100C--Direct Clutch Housing w ith Check Ball
FOR IDENTIFICATION—
DIRECT CLUTCH HOUSING
FOR 6 PLATE CLUTCH PACK
T H E P IST O N M U ST
A U T O M A T IC T R A N S M IS S IO N S
Fig . 7 A - 1 0 1 C —I n s t a l l i n g D i r e c t C l u t c h P is t o n
B L I N D
D IR EC T C L U T C H
F i g . 7 A - 1 0 2 C ~ F o r w a r d a n d D i r e c t C l u t c h P i s t o n I d e n t i f i c a t i o n
6. Place spring retainer and snap ring on retainer.
7. U sing an arbor press and T ool J-4670, w ith J-21664,
com press springs and install snap ring (Fig. 7A-94C ):
8. Install direct clutch plates. See Fig. 7A -103C .
a. For m odel CZ, start with one (1) waved steel plate,
Fig. 7 A -1 0 3 C - D ir e c t Clutch Assembly Exploded
(400)7A -33
H O L E S
F O R W A R D C L U T C H