Removing Locking Ring From Power Piston; Removing Reaction Retainer - Pontiac Grand Prix Service Manual

5A-8 1969
PONTIAC SERVICE MANUAL
Fig. 5A-8 Removing Locking Ring From Power Piston
The center section of the gage has two levels. The
piston rod end should always touch the longer section
of the gage which extends into the front housing. The
piston rod end should never touch the shorter section
of the gage.
NOTE: Any variation beyond these limits must be
compensated for by obtaining service adjustable push
rod and adpsting screw in end to match height of gage.
Variation beyond these limits can cause the primary cup
to overlap the compensating port of the master cylinder
which will trap fluid in the hydraulic system causing
brake drag.
2. Replace master cylinder on front housing studs.
Install attaching nuts on studs. Torque to 25 lb. ft.
3. Install vacuum check valve.
4. Tempest, Grand Prix and Firebird - install clevis
lock nut to push rod, finger tight. Attach clevis and
tighten clevis against lock nut to 90 lb. in.
NOTE: Do not omit lock nut or pedal height will be too
low.
5. Tempest, Grand Prix and Firebird - attach clevis pin
and retainer at brake pedal. Pontiac - attach push rod
eye to pivot pin on brake pedal and install retainer
clip.
Fig. 5A-9 Removing Reaction Retainer
6. Check stop light switch adjustment.