GMC 1976 ZEO 6083 Maintenance Manual page 504

7- 5 6 TRANSMISSION
8. Inspect springs for collapsed coils or signs of
distortion .
NOTE :
The 14 direct clutch release springs are
not serviced individually . If one or more of these
springs require replacement, discard all of them
and install the 16 service direct clutch release
springs.
9. Inspect clutch housing for free operation of
check ball .
ASSEMBLY
1 . Lubricate new inner and outer clutch piston
seals with transmission fluid. Lubricate seal grooves
in direct clutch piston and install seals with lips fac-
ing away from spring pockets.
IMPORTANT :
1975 and 1976 transmissions now
use a direct clutch housing with a check ball, see
Figure 80 . If the housing requires replacement
and the replacement housing does not contain a
check ball, replace the direct clutch piston with
the service piston which as a check ball . EI-
THER THE DIRECT CLUTCH HOUSING
AND/OR THE PISTON MUST CONTAIN A
CHECK BALL .
2. Lubricate new center seal with transmission
fluid. Lubricate seal groove in direct clutch housing
and install seal in clutch housing with lip facing up .
3 . Place Forward and Direct Clutch Inner Seal
Protector, J-21362, over direct clutch hub. Install
clutch piston inside Forward and Direct Clutch Pis
ton Installer, J-21409, insert assembly in direct
Figure 80-Direct Clutch Housing
Figure 81-Installing Direct Clutch Piston
clutch housing Figure 81 and install clutch piston by
rotating it slightly, in a clockwise direction .
4. Install 14 clutch release springs into spring
pockets in clutch piston leaving two pockets directly
opposite with no springs.
5. Place spring retainer and snap ring over
springs.
6. Using Clutch Spring Compressor, J-4670,
Rear Clutch Spring Compressor, J-6129, or an arbor
press, and Adapter, J-21664, compress spring re
tainer, being careful that retainer does not get caught
in snap ring groove, and install snap ring with Snap
Ring Pliers, J-8059 or J-5586, Figure 79 . Remove
tools.
NOTE:
Make certain clutch release springs are
not leaning. If necessary, straighten springs with
a small screwdriver.
7. Lubricate the five flat and one waved (plate
with "U" notch) and steel and six composition
clutch plates with transmission fluid and install
clutch plates in direct clutch housing. Start with
waved steel plate and alternate composition and flat
steel clutch plates .
8 . Install direct clutch backing plate over clutch
plates and install backing plate snap ring .
9. Invert clutch housing and install one sprag
bushing, cup side up, around sprag inner race .
10 . Install sprag assembly into clutch outer race .