Cadillac 60 Series 1963 Shop Manual page 179

8-14
BRAKES
Adjusting Screw Push Rod
Push Rod
Height Gage
J-7723-01
Vacuum Cylinder
Fig. 8-15 Checking Push Rod Height (Bendix)
16. Remove power unit from master cylinder
and place unit on bench.
17. Apply special lubricant to piston end of
push rod and to entire surface of reaction disc.
18. Place reaction disc on push rod and insert
push rod and disc into diaphragm plate. Press
and twist rod to make certain disc and rod are
bottomed in plate.
NOTE: The push rod is designed with a self-
locking adjustment screw to provide the correct
relationship between vacuum piston and master
cylinder piston. This adjustment is very im-
portant because it assures the compensating
port being kept open while unit is in released
position. Adjustment screw is set to the correct
height at time of assembly and, under normal
service, will not require further adjustment.
When unit has been disassembled, however,
adjustment should be checked to assure proper
height.
19. Place Push Rod Height Gage, J-7723-01,
over push rod with legs of gage resting on front
shell of vacuum power unit, Fig. 8-15. Top of
screw should just touch gage.
20. If adjustment is necessary, hold push rod
with pliers at serrated end and turn adjusting
screw either in or out as required.
21. Install new seal ring in groove on hub of
master cylinder and attach master cylinder to
vacuum power unit with four lockwashers and
nuts. Tighten nuts to 17 foot-pounds.
Filler
Gasket
Master Cylinder Body
Check Valve Spring
Spring Stop
Secondary Spring
\
Retainer
Piston Seal
Protector Washer > .
Secondary Piston
Piston Seals
Retainer
Spring
Residual Check Valves /
Outlet Fitting
Spring Retainer
Adjusting Screw-
Check Valve Spring
'Gasket
Piston Seal
Protector Washer
Primary Piston
Piston Stop and Seal Assembly
Snap Ring
Fig. 8-16 Bendix Master Cylinder Disassembled