Preparing To Separate Primary And Secondary Pistons; Preparing To Remove Primary Support Plate; Removing Primary Power Piston; Removing Air Valve-Pushrod Assembly - Pontiac Grand Prix Service Manual

5D-4 1969
PONTIAC SERVICE MANUAL
Fig. 5D4 Preparing to Separate Primary and
Secondary Pistons
9. Remove
air
valve spring from end of air valve (if it
did not come off during disassembly of power piston).
10. Mount tool J 23101 in vise (with small diameter
end up). Position primary power piston so that the two
radial slots in piston fit over ears of tool. (Fig. 5D-6)
11. Remove power head silencer from neck of power
piston tube.
12.
Fold back primary diaphragm from support plate.
Grip edge of support plate with hands and rotate in a
counttrclockwise direction to unlock support plate
from power piston.
PRIMARY
SUPPORT
PLATE
Fig. 5D-6 Preparing to Remove Primary Support
Plate
13. Remove primary diaphragm from primary support
plate.
4
14. Remove air filter and pushrod limiter washer from
tubular section of primary piston.
15. Remove rubber reaction bumper from end of air
valve.
16. Using Truarc No. 2 pliers, remove retaining ring
from
air
valve.
17. Remove air valve-pushrod assembly from tube end
of primary piston. It is recommended that a round-
Fig. 5D-5 Removing Primary Power Piston
Fig. 5D-7 Removing Air Valve-Pushrod Assembly