Specifications

GROUP 2-Brakes
2. Place a clamp over the ends of
the wheel cylinder as shown in Fig.
14).
3. Remove the brake shoe assem-
blies; following procedures outlined
in this section.
4. Disconnect the brake line from
the brake cylinder.
To disconnect the hose at a front
cylinder, remove the tube fitting that
connects the opposite end of the
hose to the brake tube at a bracket
on the side rail. Remove the horse-
shoe-type retaining clip from the
hose and bracket, disengage the hose
from the bracket, then unscrew the
entire hose assembly from the front
wheel cylinder.
At a rear cylinder, unscrew the
tube fitting that connects the tube
to the cylinder. Do not pull the
metal tube away from the cylinder.
Pulling the tube out of the cylinder
connection will bend the metal tube
and make installation difficult. The
tube will separate from the cylinder
when the cylinder is removed from
the backing plate.
5. Remove the wheel cylinder at-
taching bolts and lock washers and
remove the cylinder.
INSTALLATION
Wipe the
end(s) of the hydraulic
line to remove any foreign matter
before making connections.
1. To install a front cylinder:
a. Position the cylinder in place
against the backing plate. Install the
two lock washers and attaching bolts.
Torque them to specifications.
b. Install a new copper gasket
over the hose fitting. Thread the
hose assembly into the cylinder and
tighten it to specified torque (Figs.
20 and
21).
c. Engage the opposite end of the
hose to the bracket on the frame.
The stripe on the hose assembly must
show no evidence of twist. The brake
hose must not touch any other parts
during a turn, jounce or rebound.
Install the horseshoe-type retaining
clip, and connect the brake tube to
the hose with the tube fitting nut.
Tighten the nut to specifications with
Tool 1 1 12-144.
2. To install a rear cylinder:
a. Position the rear wheel cylinder
in place against the backing plate. En-
ter the tubing into the cylinder, and
start the tube fitting nut into the
threads of the cylinder.
b. Secure the cylinder to the car-
rier plate with the attaching bolts
and lock washers.
c. Tighten the tube fitting nut to
specifications.
3. Install the links in the ends of
the wheel cylinder (8-cylinder mod-
els only on Falcon, Mustang, Cougar
and all Comet and
Fairlane models).
4. Install the brake shoes as de-
tailed in this section.
5. Adjust the brakes as detailed in
Part 2-2, Section 2.
6. Install the brake drums and
wheels.
7. Bleed the brakes and centralize
the differential valve as detailed in
Part
2-1, Section 2.
BRAKE BACKING PLATE
REPLACEMENT
REMOVAL
1. Remove the wheel and brake
drum. Disconnect the brake line from
the brake cylinder.
2. Remove the brake shoe and ad-
juster assemblies and the wheel cyl-
inder as outlined in this section. On
the rear wheels, disconnect the park-
ing brake lever from the cable.
3. If the rear backing plate is be-
ing replaced, rotate the axle shaft so
that the hole in the axle shaft flange
lines up with the carrier plate retain-
ing nuts and remove the nuts. Pull
the axle shaft assembly out of the
housing with tool
4235-C and a
slide hammer (Part 4-2), then re-
move the backing plate. Use care to
prevent damage to the rear axle
bearing seal.
If the front backing plate is being
replaced, remove the bolts and nuts
that secure the plate to the front
wheel spindle and remove the plate.
INSTALLATION
1. Position a new rear backing
plate on the attaching bolts in the
axle housing flange. Insert the axle
shaft into the housing so that the
splines engage' the differential side
gear with the bearing retainer sliding
onto the retaining bolts and against
the backing plate. Use-care to pre-
vent damage to the rear axle bearing
seal. Install the attaching nuts through
the access hole in
.the axle shaft
flange.
Refer to Group 4, Part 4-2 for
the proper installation procedure.
Position a new front backing plate
to the wheel spindle and install the
attaching bolts and nuts.
2. Install the wheel cylinder and
connect the brake line as outlined in
this section.
3. Install the brake shoe and ad-
juster assemblies as outlined in this
section. On a rear brake, connect the
parking brake cable to the lever.
4. Adjust the brake shoes (Sec-
tion 2).
5. Install the brake drum and
wheel. Bleed the brake system and
centralize the differential valve as
outlined in Part 2-
1, Section 2.
HYDRAULIC LINES
Steel tubing is used throughout
the brake system with exception of
the flexible hoses at the front wheels
and at the rear axle housing brake
tube connector (Figs. 20 and 2
1).
Always bleed the applicable pri-
mary (front) or secondary (rear)
brake system after a primary or sec-
ondary brake system hose or line re-
placement. Centralize the differential
valve after bleeding the brake system
because vibration will cause tube fail-
ure. When bending brake tubing to
fit underbody or rear axle contours,
be careful not to
ki.nk or crack the
tube.
All brake tubing should be proper-
ly double-flared at both ends to
pre
vide good leak-proof connections.
Clean the brake tubing by flushing
with clean brake fluid before instal-
lation.
When connecting a tube to a hose.
tube connector, disc caliper, or brake
cylinder, tighten the tube fitting nut
to specified torque (Figs. 20 and 21)
with
Milbar tool 11 12-144 or equiva-
lent.
BRAKE HOSE REPLACEMENT
If the vehicle is equipped with disc
brakes on the front wheels, it will
be
necessary to remove the front wheel
cover,
wheel and tire to replace the
brake hose.
When installing a new front brake
hose, make certain it is replaced with
the proper hose assembly. Install
.a
new gasket over the hose fitting and
torque the hose assembly to the wheel
cylinder or caliper connection as noted
in Figs. 20 and 21. Install the hose
into the bracket on the side rail.
Make sure the stripe on the hose
shows no evidence of twist. Install
the retaining clip. Connect the tube
assembly to the hose, and torque the
connector to specification (Figs. 20
and 2
1).
A rear brake hose should be instal-
led so that it does not touch the muf-
fler outlet pipe or shock absorber.
Since the rear brake hose is inte-
gral with the rear brake tube connec-
tor, the'entire hose and connector is
replaced as an assembly. Mount the
connector to the rear axle housing
with the attaching bolt (axle vent)
and lock washer. Connect the two
rear wheel brake tubes to the con-
nector. Install the hose in the D slot
in
the rear hose bracket. Install clip.
Connect the tube assembly to the
hose, and torque the connector to
specification (Figs. 20 and 2
1).