Pontiac FIREBIRD 1972 Service Manual page 1100

76-62 1972 PONTIAC SERVICE MANUAL
.O20"
MUSIC WIRE CRIMPED
INTO COPPER TUBING
Fig. 7G-1 12 Installing Forward Clutch Piston
4. Install twenty-one (21) piston return springs and
spring seat into piston.
NOTE: Free length of springs is 1 1/16'' by
1/2" diameter and springs are violet in color.
5. Using Clutch Spring Compressor J 23327-1 in a
press, compress spring seat and install piston retain-
ing ring.
6. Remove tool and lubricate plates with transmission
fluid.
7. On V-8 models, install cushion spring and, starting
with a steel plate, alternately install five (5) steel and
five (5) faced plates into the forward clutch drum
(Fig. 7G-107).
Fig. 7G-1 1 3 Checking Free Back Height
I
Fig. 7G-1 14 Pressure Plate Identification
On 6 cylinder models, install cushion spring and,
starting with a steel plate, alternately install four (4)
steel and four (4) faced plates into the forward clutch
drum (Fig. 7G-107).
8. Install forward clutch pressure plate and its retaining
ring (Fig. 7G-108).
9. Using a feeler gage, check the free back height be-
tween the forward clutch pressure plate and faced
plate (Fig. 7G- 1 13).
The specifications of the transmission call for a free
back height of no less than .0105" and no more than
.082On.
NOTE:
There are three pressure plates of differ-
ent thickness that are available for service and
are identified by tangs adjacent to the source
identification mark (Fig. 7G- 114):
a. Pressure plate with no tangs is .245" to .255"
thick.
b. Pressure plate with 1 tang is .275" to .285"
thick.
c. Pressure plate with 2 tangs is .306" to .316"
thick.
10. a. If free back height checks out to be between .0105"
and .082OU, no change of pressure plate is needed.
b. If free back height checks out to be less than
.0105", remove the pressure plate, check for
thickness of pressure plate (use absence of or
number of tangs as indicated by NOTE above)
and install a thinner pressure plate that will a
clearance of .0105" to .O82OV.