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BRAKES
REPLACEMENTS
8-17
"
SECTION 8-D
BRAKE REPLACEMENT AND REPAIR PROCEDURES
CONTENTS OF SECTION 8-D
Paragraph
Subject
Page
8-16
Replace or Reline Brake Shoes.. 8-17
8-17
Inspecting and Reconditioning
Brake Drums
.
. .
.
.
. . .
. . . . . . . .. 8-19
Paragraph
Subject
Page
8-18
Brake Wheel Cylinder Overhaul.
.
8-20
8-19
Brake Master Cylinder Overhaul. 8-21
SERVICE BULLETIN REFERENCE
Bulletin No.
Page No.
SUBJECT
8-16 REPLACE OR RELINE BRAKE SHOES
The most satisfactory method of replacing
brake lining is to install new shoe and lining
assemblies. This insures brake shoes that are
not distorted through use, and linings properly
riveted to shoes and ground to correct radius
by accurate factory machinery.
Each brake shoe and lining set listed under
Group 5.017 contains two primary and two
secondary shoe and lining assemblies, enough
for two wheels. Sets are available in standard
size and also in .030" oversize for use where
brake drums have been rebored.
Use brake shoe lining sets listed under
Group 5.018 if the old brake shoes are to be
relined. Each lining set contains two primary
and two secondary linings, .enough for two
wheels. Linings are shaped, drilled, and ground
to correct thickness and radius, and are pack-
aged with enough rivets for installation on
shoes. Linings sets are available in standard
and .030" oversizes.
Several optional types of lining have been
approved for primary shoes and are furnished
for service replacement. It is not possible to
distinguish between different types of primary
lining by inspection; however, only one type of
lining will be found in each carton containing
a shoe and lining set or a lining set. Only one
type of secondary shoe lining is used.
In order to insure equal braking action it is
recommended that only primary shoes or
linings from the same carton be installed in
left and right brake assemblies at either the
front or rear wheels. In any case where pri-
mary shoes or lining are replaced, both right
and left sides should be replaced whether the
opposite primary shoe lining is excessively
worn or not. It is not necessary, however, that
primary linings are of the same material on
front and rear wheels.
The following procedure covers replacement
of shoe and lining assemblies aild also relining
of old shoes at anyone wheel. Additional op-
erations are specified where inspection may in-
dicate their need. Each additional operation
is identified by an asterisk
(*)
preceding the
reference to paragraph number covering the
operation.
a. Removal and Inspection
1. Jack up car in a safe manner, remove
wheel, then remove brake drum (rear) or
drum and hub assembly (front). NOTE: Since
stops are located on brake backing plate to pre-
vent pistons from leaving wheel cylinder, it is
not necessary to install wheel cylinder clamps
when drums are removed;
however,
brake
pedal must not be operated while drum is re-
moved.
2. Unhook shoe return springs from anchor
pin, using large pliers and being careful not to
nick or distort springs. Remove shoe hold down
springs, spread shoes to clear wheel cylinder
connecting links, remove parking brake strut
(rear only), and remove shoes from backing
plate. Disconnect cable from parking brake
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