Removing Rear Seal; Rear Bearing And Rear Shell; Disassembly Of Power Brake Unit-All Except X Car; Installing Air Valve Plunger - Pontiac TRANS AM 1977 Service Manual

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1977 PONTIAC SERVICE MANUAL
Fig. 5 - 7 9 Removing Rear Seal
~ R E ~ ~ ~ ~ A R I N G AND VACUUM
Fig. 5-82 Seal Protector Tool J 2 2 7 3 3
REAR
SHELL
I
421 5
Fig. 5 - 8 0 Rear Bearing and Rear Shell
Fig. 5 - 8 3 Installing Air Valve Plunger
TOOL
J-22677
REAR BEARIN
AND VACUUM
SEAL
41 65
Fig. 5-8 1 Installing Rear Bearing and Vacuum Seal
5. Remove clevis pin retainer and pin at brake pedal.
6. Remove clevis and lock nut from push rod.
Disassembly of Power Brake Unit
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All Except X
Car
1. Scribe a mark on bottom center of front and rear
housings to facilitate reassembly.
Fig. 5 - 8 4 Installing Rear Diaphragm Retainer
2. Using holder J 22805-01 and Handle J 9504-01, rotate
rear housing counterclockwise to unlocked position. See
Figure 5-87. Loosen housing carefully as it is springloaded.
3. Lift rear housing and power piston assembly from
unit. Then remove return spring.
4. Remove clevis and jam nut from push rod. Remove
retaining ring on push rod that holds silencer in place on push
rod. Remove silencer.