Pontiac FIREBIRD 1972 Service Manual page 503

5E-8 1972 PONTIAC SERVICE MANUAL
Fig. 5E-8 Exploded View of Caliper
Using a suitable lever, move caliper outboard as far
CLEANING AND INSPECTION
as possible by prying against the-back of the caliper
(Fig. 10-1 1). This will push the piston to the bottom
of the piston bore.
Remove the two mounting bolts which attach the
caliper to the support bracket or steering knuckle
(Fig. 5E-7).
NOTE:
It is not necessary to disconnect the
brake hose for shoe lining replacement.
Lift the caliper off the rotor using equal force on each
end to prevent it from binding at the mounting
bracket flanges. Do not force caliper if it becomes
cocked. Dislodge both shoes and position the caliper
on the front suspension arm so that the brake hose
does not support the weight of the caliper.
Transfer the inboard shoe anti-rattle spring to the
new shoe and lining assembly.
Using hand pressure, push the sleeves from the in-
board ears of the caliper. Next, remove the rubber
bushings from the grooves in each of the four caliper
ears (Fig. 5E-8). Discard these parts, new ones are
provided with new linings.
Thoroughly clean the holes and the bushing grooves in the
caliper ears. Wipe all dirt from the mounting bolts. Do not
use abrasives on the bolts since this will damage the plat-
ing. If the bolts are corroded or damaged, they must be
replaced.
Examine the piston boot for evidence of fluid leakage. If
leakage is noted, the caliper should be overhauled. (See
Caliper
-
Overhaul.) Wipe the inside of the caliper clean,
including the exterior of the dust boot. Check the boot for
cuts, cracks or other damage. Make sure that the boot is
properly engaged in the groove in the piston and also in
the caliper counter-bore (Fig. 5E-9).
CAUTION: Do not use compressed air to clean
the inside of the calker since this may cause the
dust boot to become unseated.
If the vehicle has a brake problem and diagnosis points to
the rotor, it should be inspected and checked for runout
and parallelism at this time (See Rotor Service).
INSTALL
1. Using a high quality silicon lubricant, lubricate the