Caliper Removal; Removing Mounting Pins; Removing Or Installing Shoes; Mounting Sleeve - Pontiac TRANS AM 1977 Service Manual

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BRAKES
5-33
H SERIES
Caliper Removal
See warning on page 5-1.
1. Raise the car on a hoist and remove the wheel covers
and wheel assemblies.
It is not necessary to remove the hydraulic brake hose
when removing the caliper; however, do not let the caliper
hang from the suspension by the hydraulic brake hose. Lay
the caliper on the suspension members for support or hang
from wire.
Fig. 5-51 Removing or Installing Shoes
Fig. 5-50 Removing Mounting Pins
2. Remove snap rings and mounting pins.
3. Lift cali~er off the disc and remove inboard and
outboard shoes
by
sliding the shoes to the mounting sleeve
opening. See Fig. 5-51.
Mark disc pad position if pads are to be reused.
4. Remove the mounting sleeves and bushing assemblies.
Cleaning and Inspection
1. Examine the inside of the caliper for evidence of fluid
leakage. If leakage is noted, the caliper should be overhauled.
2. Wipe the inside of the caliper clean including the
exterior of the dust boot. Check the boot for cuts, cracks or
other damage.
C A U T I 0 N : Do not use compressed air to clean
the caliper. This could cause the dust boot to
become unseated.
3. Clean caliper sliding surfaces with a wire brush to
remove rust and other foreign material.
Installation
1. Install the new sleeves with bushings on the caliper
grooves. The "shouldered end" of the sleeve must be installed
toward the outside. See Fig. 5-52.
Fig. 5-52 Mounting Sleeve
2. Install the inner shoe to the caliper and slid the shoe
ears over the sleeve. Install the outer shoe in the same
manner.
CA U T I 0 N :
If pads are being re-used, they must
be installed in original position (as marked at
removal).
3. Mount the caliper to the vehicle.
It may be necessary to remove 1/2 of the brake fluid
from the master cylinder before installing new shoes. This is
especially true if replacing worn out shoes with new shoes.
C A U T I 0 N : When reinstalling caliper be sure you
haven 't turned it over, end over end. This would
cause a severe twist in the brake hose. After
positioning caliper on disc, observe brake hose
being sure it is not twisted.
4. Install the mounting pins in a direction from outside
to inside.

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Firebird 1977

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