Cadillac 60 Series 1963 Shop Manual page 177

8-12 BRAKES
Power Unit
Shell Separator J-9504
Fig. 8-11 Removing Bendix Power Unit Rear Shell
4. Install Power Unit Shell Separator, J-9504,
over mounting studs on rear shell and rotate rear
shell counterclockwise to disengage from front
shell, Fig. 8-11.
5. Disconnect vacuum pump and then work push
rod several times to empty master cylinder and
relieve vacuum in power unit.
6. Remove rear shell, power piston assembly,
and piston return spring, Fig. 8-12.
CAUTION: Be careful when removing Sepa-
rator Tool, as internal piston return spring may
cause rear shell to fly off when pressure is
released.
7. Remove dust guard and retainer from rear
shell.
8. Pry off filter retainer and remove silencer
and air filter from valve housing in diaphragm
plate, Fig. 8-12. Be careful not to scratch or chip
plastic housing.
9. Remove rear shell from diaphragm plate
assembly and remove power diaphragm from dia-
phragm plate.
Rear Shell
Fig. 8-13 Removing Bearing Seal From Rear Shell
10. Remove valve plunger lock and remove con-
trol valve and rod assembly.
11. Remove hydraulic push rod from diaphragm
plate.
12. Press rubber reaction disc out of dia-
phragm plate.
13. Remove front shell and master cylinder
from vise and remove vacuum check valve by
turning counterclockwise, then remove gasket.
Discard check valve and gasket.
14. Remove four nuts and lockwashers that re-
tain master cylinder to front shell and remove
master cylinder. Remove seal ring and discard.
15. Support rear shell on two wood blocks and
drive out bearing seal with screwdriver or punch,
Fig. 8-13. Discard bearing seal.
Control Valve
and Rod Assembly
Hydraulic Push Rod
Reaction Disc
Gasket
Filter Retainer Air Filter
Rear Shell
\
Bearing Seal
Dust Guard
Vacuum
Check Valve
Silencer
• Dust Guard Retainer
Front Shell
Piston Return Spring
Valve Plunger Lock
Diaphragm Plate
Power Diaphragm
Fig. 8-12 Bendix Power Unit Disassembled