Pontiac tempest 1968 Service Manual page 175

5-10
1968 r O N T I A C SERVICE MANUAL
Fig. 5-11 Master Cylinder •
1. Clevis
15.
2. Clevis N u t
16.
3. Boot
16.
4. Push Rod Retainer
17.
5. Push Rod
17.
6. Snap Ring
18.
7. Secondary Seal
19.
8. Primary Piston
20.
(Rear)
9. Protector Washer
21.
10. Primary Cup
1 1 .
Spring Retainer
22.
12. Primary Piston 23.
Spring
24.
13. Secondary Piston 25.
Stop
26.
14. Piston Extension
27.
Sc rew
28.
Secondary Seal
Secondary Piston
(Front)
Primary Seal
Protector
Primary Seal
Spring Retainer
Secondary Piston
Spring
Master Cylinder
Casting
Stop Bolt
Reservoir Diaphragm
Reservoir Cover
Reservoir Retaining BaiI
Check Valves Springs
Check Valves
Tube Seat Inserts
FACE. INSTALL THE PRIMARY HOLD-DOWN
SPRING.
10. On rear brakes, install the parking brake cable
on the parking brake lever.
11. Install the primary and secondary brake shoe
return springs.
NO TE: New brake shoe return springs should be
installed if old springs have been overheated or
strength is doubtful. Overheated springs may be
indicated by burned paint, end coils opened up, or
failure of shoes to return to anchor pin.
12. Sand linings lightly to remove any trace of
dirt.
13. When new shoes or linings have been installed,
shorten adjusting screw until drum can slide freely
over shoes. Check to see that adjuster lever can
turn adjusting screw star wheel with minimum of
effort.
14. Install drums, observing instructions for front
wheel bearing adjustment as outlined in section 3 of
this manual.
15. If wheel cylinder has been replaced or re­
paired, or hydraulic line has been replaced, bleed
brakes as described in this section on BLEEDING
BRAKES.
16. Connect parking brake front cable and adjust
as outlined under PARKING BRAKE-ADJUSTMENT.
17. Check fluid level in master cylinder as shown
in Fig. 5-6).
18. Adjust brake shoes as described in this section
on ADJUSTMENT.
19. Install wheels. Tighten nuts (Pontiac) 75 lb.ft.
(Tempest and Firebird) 70 lb. ft. torque.
20. Check brake pedal travel to be sure it is with-
in specifications, then road test car for proper op­
eration of the brake system.
CAUTION: New linings must be protected from
severe usage for several hundred miles. This
should be conveyed to owner, along with instruc­
tions to follow proper burnishing procedure as
outlined in Owner's Manual.
HYDRAULIC SYSTEM
(PONTIAC) OR 4 (TEMPEST AND FIREBIRD)
STAMPED ON THE OUTER FACE. THE REAR
BRAKE RETAINING PINS ARE IDENTIFIED WITH
THE NUMERAL 8 (PONTIAC) OR 2 (TEMPEST
AND FIREBIRD) STAMPED ON THE OUTER
BLEEDING BRAKES
Depressing the pedal with a low fluid level in mas­
ter cylinder reservoir or disconnecting any part of
the hydraulic system permits air to enter the system.