Securing Front Housing To Arbor Press; Securing Rear Housing To Tools - Pontiac Grand Prix Service Manual

5D-8 1 5 x . 5 9 PONTIAC SERVICE MANUAL
PISTON ROD
RETAINER PLATE
FRONT HOUSING
RETURN .SPRING
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26. Apply light coat of talcum powder or silicone
lubricant to bead on O.D. of secondary diaphragm.
This will facilitate reassembly of front and rear
housings.
27. Place secondary diaphragm support ring on
secondary power piston assembly so that it rests on
edge of diaphragm.
28. Hold housing divider so that formed over flange
(that holds the primary diaphragm) of divider faces
down. Place secondary bearing: in I.D. of divider so
that extended lip of bearing facgs up.
29. Lubricate I.D. of secondary bearing with silicone
lubricant.
30. Position secondary bearing protector Tool J 23188
on threaded end of secondary power piston.
31. Hold housing divider with formed flange (that
holds the primary diaphragm) facing up. Press divider
down over tool and onto secondary power piston tube
where it will rest against diaphragm support ring (Fig.
5D-12). Remove Tool J 23188 from secondary power
piston, however, do not remove secondary power
piston subassembly from Tool J 23 10h.
32. Pick up primary power piston assembly and
position small end of air valve return spring on air
valve so that it contacts air valve retaining ring.
Fig. 50-13 Securing Front Housing to Arbor Press
33. Fold primary diaphragm away from O.D. of
primary support plate.
power piston contact stops on support plate. Fold
34. Position primary power piston on tubular portion
secondary diaphragm back into position
On
of secondary power piston, making sure that air valve
support plate- Leave the secondary Power piston
return spring seats down over raised center section of
assembly on Tool J 23 10 1 in vise.
secondary piston.
35. Grip edge of primary support plate with hands,
press down, and start threads on secondary power
piston into threaded portion of primary power piston
by rotating in a clockwise direction.
36. Continue to tighten primary power piston until it is
securely attached to secondary power piston.
37. Fold primary diaphragm back into position on
primary support plate and pull diaphragm O.D. over
formed flange of housing divider. Check that bead on
diaphragm is seated evenly around the complete
circumference. Remove assembly from tool.
38. Wipe thin film of silicone lubricant on O.D. of
piston rod retainer. Insert master cylinder piston rod
retainer into cavity in secondary power piston so that
flat end bottoms against rubber reaction disc in
bottom of cavity.
39. Place primary power piston bearing in rear housing
center hole so that formed flange of housing center
Fig. 50-14 Securing Rear Housing to Tools
hole fits into groove of primary power piston bearing.