Cadillac 60 Series 1963 Shop Manual page 171

8-6
BRAKES
5. Disconnect link at anchor and remove link,
secondary brake shoe retracting spring, and an-
chor plate.
6. Remove primary brake shoe hold-down cups,
spring and pin, and secondary brake shoe hold-
down pin, cup, spring, and sleeve.
7. Remove pawl return spring, actuating lever,
and pawl.
8. Disengage brake shoes from wheel cylinder
connecting links and parking brake strut rod. Re-
move strut rod and spring.
9. Disconnect parking brake cable from oper-
ating lever on secondary shoe and remove com-
plete shoe and lining assembly from brake backing
plate.
10. Remove star wheel adjuster and primary to
secondary connecting spring from shoe assembly.
11. Remove clip from pin on secondary brake
shoe and remove operating lever and pin
assembly.
12. Clean brake backing plate and all brake
parts.
CAUTION: To avoid the possibility of brake
"grab" and "pull" after brake service has been
performed, make certain that hands are clean
when handling brake parts and avoid handling
friction surfaces of drums and linings as much
as possible.
13. Tighten bolts that hold backing plate to rear
axle housing to 40 foot-pounds (70 foot-pounds on
commercial chassis).
14. Install operating lever and pin assembly on
replacement secondary brake shoe and secure
with clip.
15. Lubricate threads and socket of star wheel
adjuster and points of contact between brake and
other brake parts with special heat resistant lu-
bricant which should be used sparingly, especially
on brake shoe pads.
16. Thread star wheel adjusting screw com-
pletely into pivot nut to permit installation of
brake drum over replacement brake shoes.
17. Install star wheel adjuster and primary-to-
secondary connecting spring on brake shoes. Make
certain that star wheel rotates in proper direction.
NOTE: Red springs are used on both left
and right hand rear brake shoe assemblies.
These springs are interchangeable.
Star wheel adjusters with three wide grooves on
O.D. of pivot nut (left hand threads) are installed
on right side of car and those with three narrow
grooves on O.D. of pivot nut (right hand threads)
must be installed on left side. The three narrow
grooves on the socket are for manufacturer's
identification only. Sockets are interchangeable,
left and right.
18. Position shoe assembly on brake backing
plate and connect parking brake cable to operating
lever.
19. Install parking brake strut rod and spring
on brake shoe assembly.
NOTE: Spring tab must be positioned outside
of brake shoe web on left rear brake and inside
of web on right rear brake.
20. Engage shoes with wheel cylinder connect-
ing links and install hold-down pin, cups, and
spring on primary brake shoe.
NOTE: Red primary and blue secondary
hold-down springs are used on the rear brake
assembly.
21. Position actuating lever and pawl so that
actuating lever is on top of secondary brake shoe.
Secure with hold-down pin, sleeve, spring, and
cup.
22. Install anchor plate, link, and secondary
brake shoe retracting spring (yellow). For easiest
installation, first connect spring to link, then
install link on anchor, using brake Spring Remove
er and Installer, J-8049.
23. Install pawl return spring. Make certain
that star wheel engages pawl.
24. Install primary brake shoe retracting
spring (red) using Spring Installer, J-8049.
25. Install rear brake drums on rear axle shaft
flange and secure with two screws.
26. Perform preliminary service brake adjust-
ment as described in Note 1.
27. Install wheels on brake drums. Tighten
wheel mounting nuts to 105 foot-pounds.
28. Adjust parking brake as described in Note 2.
5. Machining Brake Drums
Brake drums should be carefully checked to see
if they have become warped or scored excessively.
If they appear salvable, they can be machined if
suitable equipment is available.
Drum machining is a precision operation and
equipment used for this purpose must be capable
of maintaining the close limits specified. Be sure
to install drum in the machining equipment cor-
rectly and to check runout of lathe spindle to in-
sure accuracy of final machining operation. Inside