Pontiac FIREBIRD 1972 Service Manual page 945

7E-56 1972 PONTIAC SERVICE M A N U A L .
Fig. 7E-94 Driving Pin From Governor
gauge as shown by holding the governor weights
completely inward (Fig. 7E-94).
c. If less than .020" minimum opening is found,
governor assembly must be replaced.
FRONT SERVO
INSPECT (Fig. 7E-95)
1. Inspect servo pin for damage.
2 . Inspect servo piston and oil seal ring for damage. Do
not remove the teflon oil seal ring from the servo
piston unless the ring requires replacement. For ser-
vice, the oil seal ring will be aluminum.
3. Check fit of servo pin in piston.
REAR SERVO
DISASSEMBLE
1. Remove rear accumulator piston from rear servo pis-
ton (Fig. 7E-96).
2. Remove E-ring, retaining rear servo piston to band
apply pin (Fig. 7E-97).
Fig. 7E-95 Exploded View of Front Servo
Fig. 7E-96 Removing Accumulator Piston From Rear Servo
Piston
3. Remove rear servo piston and seal from band apply
(servo) pin (Fig. 7E-98).
4. Remove washer, spring and retainer.
INSPECT
1. Inspect the freeness of accumulator rings in piston
groove.
2. Inspect the fit of band apply (servo) pin in servo
piston.
3. Inspect the band apply (servo) pin for scores or
cracks.
4. Inspect accumulator and servo pistons for cracks or
porosity.
NOTE: Refer to Fig. 7E-98. Do not remove the
teffon oil seal nngs from the accummulatorpis-
ton unless the oil seal rings require replace-
ment.
If the teffon inner (small diameter) oil seal ring re-
SERVO PISTON
Fig. 7E-97 Removing E-Ring From Servo Pin