Assembly Of Diaphragms And Plates In Front And Rear Shells; Installing Rear Shell Vacuum Seal; Master Cylinder Exploded View - Pontiac Grand Prix Service Manual

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-6
1969 PONTlAC SERVICE MANUAL
1. Snap Ring
2. Splash Shield Retainer
3. Splash Seal
4. Secondary Seal
5. Rear Piston and
String Assembly
6.
Pr~mary Cup
7. Secondary Seals
8. Front (Floating Piston)
9. Protector
10. Primary Cup
11. Retainer
12. Front Piston Return
Spring
13. Piston Stop Screw
and Seal
14. Tube Seak
15. Check Valves
16. Springs
17. Master Cylinder
Casting
18. Hermetic Diaphragm
19. Reservoir Cover
20. Bale-Type Retuiner
Fig. 5C-6 Master Cylinder
-
Exploded View
BEARING SEAL INSTALLER
J-22677
SEAL ASSEMBLY
Fig. 5C-8 Installing ~ente: plate
3. Install square ring seal fumly against shoulder of
front plate hub.
4. Apply power brake lubricant lightly to front and
rear bearing surfaces of valve plunger, being careful
NOT to get any lubricant on rubber grommet inside
plunger. Assemble valve plunger return spring on
valve plunger as shown and set spring and plunger in
recess of front plate hub, grommet side up.
5. Set rear plate, threaded bore down, over valve
plunger and, using hands only, screw rear plate onto
front plate hub. To tighten plates, place 1-1/16" hex
bar stock or tool J 22839 in vise and set plate assembly,
front plate down, on hex bhr. Using air channel slot or
rear plate edges, hand torque plates to 12 1/2 lb. ft.
6. Remove plate assembly from vise.
7. Install rear diaphragm on rear plate and over lip of
center plate. Asse-mble rear diap&agm spring retainer
over rear diaphragm and lip of center plate. Using
fingers, Dress retainer onto center plate until it seals
ag&st ihoulder of center plate.
ASSEMBLY OF DIAPHRAGMS AND PLATES I N
FRONT AND REAR SHELLS
1. Apply power brake lubricant liberally to bearing
seal in rear shell.
2. Apply power brake lubricant liberally to scalloped
Fig. 5C-7 Installing Rear Shell Vacuum Seal
cut-outs on edge of front shell.