glove box FORD MUSTANG 1969 Volume One Chassis

02-02-07
Brake System

02-02-07

ANTI-SKID CONTROL SYSTEM

RELEASE PAWL CAM PIN

RELEASE PAWL CAM LEVER

RELEASE CABLE

H
1636-
A

FIG. 10—Parking Brake Control Assembly

With Manual Release—Typical

power unit with mounting bracket is

riveted to the control assembly. The

vacuum actuated piston within the

unit is connected by a rod to the

upper end of the release lever (Fig. 9).

The lower end of the release lever ex-

tends out for alternate manual release
in the event of vacuum power failure

or for optional manual release at any

time.

Hoses connect the power unit and

the engine manifold to a vacuum re-

lease valve in the transmission neutral

safety switch.
The anti-skid control system con-

sists of three major components (Fig.

39).
Mechanically driven electromag-

netic sensors at each rear wheel; an

electronic control module mounted

under the glove box; a vacuum pow-

ered actuator attached to a bracket on

the inside of the right front frame rail

under the toe board.

The sensors consist of steel rings

having teeth on their outer diameters,

pressed on each axle shaft just out-

board of the wheel bearing. The teeth

rotate past corresponding teeth on the

inside diameter of stationary steel

rings mounted in the bearing retain-

ers.
Also mounted in the retainers, are

ring-shaped permanent magnets and

coils of wire. Two wires from each

sensor connect the sensors to the con-

trol module.

The control module consists of solid

state electronic components sealed in

a container. It is connected to the sen-

sors and to a solenoid on the actuator.

The actuator is similar to a vacuum

brake booster and consists of three

parts.
A chamber divided by a vacuum

suspended diaphragm; a hydraulic cyl-

inder connected to the diaphragm; and

a solenoid connected electrically to the

control module.

IN-VEHICLE ADJUSTMENTS AND REPAIRS

After any brake service work, ob-

tain a firm brake pedal before moving

the vehicle. Riding the brake pedal

(common on left foot application)

should be avoided when driving the

vehicle.

BRAKE SHOE ADJUSTMENTS—

DRUM BRAKES

The hydraulic drum brakes are

self-adjusting and require a manual

adjustment only after the brake shoes

have been relined, replaced, or when

the length of the adjusting screw has

been changed while performing some

other service operation. The manual

adjustment is performed with the

drums removed, using the tool and the

procedure detailed below.

When adjusting the rear brake

shoes,
check the parking brake cables

for proper adjustment. Make sure that

the equalizer operates freely.
To adjust the brake shoes:

1.
Use Rotunda Tool HRE 8650,

(Fig. 11) to determine the inside diam-

eter of the drum braking surface.

2.
Reverse the tool as shown in Fig.

11 and adjust the brake shoe diameter

to fit the gauge. Hold the automatic

adjusting lever out of engagement

while rotating the adjusting screw, to

prevent burring the screw slots. Make

sure the adjusting screw rotates freely.

If necessary, lubricate the adjusting

screw threads with a thin, uniform

coating of MIC-100-A.

3.
Rotate Tool HRE 8650 around

the brake shoes to be sure of the set-

ting.

4.
Apply a small quantity of high

temperature grease to the points

where the shoes contact the backing

plate, being careful not to get the lu-

bricant on the linings.

5. Install the drums. Install Tinner-

man nuts and tighten securely.

6. Install the wheels on the drums
and tighten the nuts to specification.

7.
Complete the adjustment by

applying the brakes several times with

a minimum of 50 lbs pressure on the

pedal while backing the vehicle. After

each stop the vehicle must be moved

forward.

8. After the brake shoes have been

properly adjusted, check the operation

of the brakes by making several stops

while operating in a forward direction.

WHEEL CYLINDER REPAIR-

DRUM BRAKE

Wheel cylinders should not be di-

sassembled unless they are leaking or

unless new cups and boots are to be

installed. It is not necessary to remove

the brake cylinder from the backing

plate to disassemble, inspect, or hone

and overhaul the cylinder. Removal is

necessary only when the cylinder is

damaged or scored beyond repair.procarmanuals.com

02-02-36
Brake System

02-02-36

locating stripe on the cable is midway

between the retaining clips and tighten

all retaining clip screws.

4.
Position the left cable, retaining

clip and screw on the left lower sus-

pension arm. Compress the prongs on

the left cable and position the cable

through the frame side-member. The

prongs must be securely locked in

place.

5.
Insert the ball ends of the cables

into the equalizer assembly.

6. Install the rear drum(s) and

tighten the three Tinnerman nuts and

secure the drum. Install the wheel and

tire and the wheel cover.

7.
Adjust the parking brake linkage

as outlined in Part 2-1, Section 2. Ad-

just the rear brakes, as required (Part

2-1,
Section 2).

FAIRLANE, MONTEGO,

MUSTANG AND COUGAR—

EXCEPT STATION WAGON

Removal

1.
Remove the equalizer lock nut

and adjusting nut, equalizer, spring

and spring seat.

2.
With the cables slack, discon-

nect the ball-ends from the connector

(Figs.
35 and 36).

3.
Remove the cable from the re-

tainer hooks (station wagon models)

and the underbody guide (convertible

models) if required.

4.
Remove the hairpin lock retain-

ing the cable housing to the side rail

bracket.

5.
Remove the wheel cover, wheel

and tire and the rear brake drum as

outlined in Section 2.

6. Remove self-adjuster springs to

allow clearance to remove cable re-

tainer from the backing plate. Discon-

nect the rear end of the cable from the

parking brake lever on the brake shoe.

Disengage the cable housing retaining

grommet or steel-pronged Hi-Hat

from the backing plate and withdraw

the cable and housing from the in-

board side of the backing plate.

7.
Slide the cable and housing out

of the side rail bracket.

Installation

1.
Insert the rear end of the cable

through the side rail bracket and pull

the cable and housing into position.

2.
Insert the rear end of the cable

and housing through the hole in the

backing plate from the inboard side.

3.
Connect the cable to the parking
brake lever on the brake shoe and in-

stall the cable housing retaining grom-

met or steel-pronged Hi-Hat in the

backing plate.

4.
Install the self-adjuster springs.

Position the cable housing in the side

rail bracket and install the hairpin

type retainer.

5.
Install rear hub and drum as-

sembly, wheel and tire assemblies and

wheel cover as outlined in Section 2.

6. Position the cable retainer hooks

(station wagon models) in the under-

body guide (convertible models) and

install the connector, thus hooking the

two cables together.

7.
Insert the cable into the equaliz-

er and install the equalizer, spring

seat, spring, adjusting nut and lock

nut to the front, parking brake control

cable.

8. Adjust the parking brake^as di-

rected in Part 2-1, Section 2.

FAIRLANE AND MONTEGO

STATION WAGONS AND

FALCON PASSENGER

MODELS

Removal and Installation

Refer to Fig. 35.

Generally follow the procedure

given above, omitting separation of

the cables, since the parking brake

rear cable assemblies supplied for

these models is in one piece. Removal

and installation of both rear wheels,

tires and drums will also be required.

LINCOLN CONTINENTAL

Removal

1.
Raise the car. Remove the rear

wheel cover. Remove the wheel and

tire as an assembly.

2.
Remove the three Tinnerman

nuts that hold the brake drum in

place, and remove the drum.

3.
Remove the brake shoe retract-

ing springs.

4.
Loosen the equalizer rod adjust-

ing nut and disconnect the cable from

the equalizer (Fig. 38).

5.
Remove the hairpin-type retainer

clip that secures the cable housing to

the body bracket, and pull the cable

and housing out of the bracket (Fig.

38).

6. Remove the cable to underbody

clamp attaching nuts and the clamp.

Disengage the cable housing from the

hook-type retainer at the spring U-

bolt.
7.
Working on the wheel side of the

backing plate (Fig. 38), compress the

prongs on the cable retainer so that it

can pass through the hole in the back-

ing plate. Draw the cable retainer out

of the hole.

8. With the spring tension off the

parking brake lever, lift the cable out

of the slot in the lever and remove it

through the backing plate hols.

Installation

1.
Pull enough of the cable through

the cable housing so that the end of

the cable may be inserted through the

backing plate hole from the inner side

and engage the cable end with the slot

in the parking brake lever.

2.
Pull the excess slack from the

cable and insert the cable housing into

the backing plate access hole (Fig.

38).
The prongs must be securely

locked in place.

3.
Install the brake shoe retracting

springs.

4.
Position the cable to the under-

body and install the retaining clamp

so that the cable conduit armor ex-

tends forward of the clamp as shown

in Fig. 38. Install the clamp retaining

nuts.

5.
Hook the cable housing to the

retainer at the spring U-bolt.

6. Engage the forward end of the

cable housing with the frame bracket

and secure it with the hairpin-type

clip.

7.
Insert the ball end of the cable

into the equalizer.

8. Make a preliminary brake ad-

justment with the use of Tool HRA-

8650 (Fig. 11).

9. Install the rear drum. Tighten

the three Tinnerman nuts that secure

the drum. Install the wheel and wheel

cover.

10.
Adjust the parking brake link-

age.

11.
Lower the vehicle.

ANTI-SKID CONTROL

ACTUATOR

REMOVAL

Refer to Fig. 39.

1.
Working in the passenger com-

partment, under the glove box, remove

the screw that attaches the forward

end of the control module retainer to

the support assembly. Lower the for-

ward end of the control module re-

tainer and remove the module assem-

bly.procarmanuals.com

FROM MASTER CYLINDER
ACTUATOR AIR FILTER

EXISTING SCREW

VIEW IN CIRCLE
W

SOLENOID

ACTUATOR TO REA

BRAKE TUBE

DIFFERENTIAL VALVE

UATORTUBE

VIEW IN CIRCLE T
FROM ACTUATOR

TO REAR BRAKES
GLOVE BOX

CONTROL MODULE

VIEW V

VIEW U

H1653-A

FIG. 39—Anti-Skid Control Systemprocarmanuals.com

02-02-38
Brake System

02-02-38

2.
Disconnect the actuator solenoid

and warning switch harness connectors

from the control module.

3.
Remove the two wiring harness

grommets from the dash panel and

push the wiring harness and connec-

tors through the openings in the dash

panel.

4.
Working in the engine compart-

ment loosen the hose clamp and re-

move the air hose from the air filter.

5.
Remove the engine air cleaner-

Loosen the hose clamp and remove

the vacuum hose from the vacuum

manifold fitting.

6. Raise the vehicle on a hoist.

7.
Disconnect the exhaust pipes

from the exhaust manifold and sup-

port with wire to provide access to the

actuator assembly.

8. Remove the bolt retaining the

actuator ground wire to the rear outer

corner of the engine right bank.

9. Loosen the tube nuts and discon-

nect the brake system hydraulic tubes

from the hydraulic valve housing.

10.
Remove the three nuts retaining

the actuator assembly to the actuator

support bracket.

11.
Remove the three bolts that re-

tain the actuator mounting bracket to

the side rail and remove the mounting

bracket.

12.
Remove the actuator assembly

from the vehicle and place it on a

bench.

13.
Remove the air and vacuum

hoses from the actuator.

INSTALLATION

1.
Install the air and vacuum hoses

on the new actuator.

2.
Place the actuator assembly into

position under the vehicle, routing the

air and vacuum hoses up between the

engine and fender apron and inserting

the solenoid leads through the holes in

the firewall.

3.
Position the ground wire to the

rear of the engine block and install re-

taining bolt.

4.
Position the actuator mounting

bracket to the frame side rail and in-

stall the three retaining bolts.

5.
Position the actuator assembly

to the mounting bracket and install

the three retaining nuts.

6. Connect the hydraulic tubes to

the hydraulic valve assembly and

tighten the tube nuts to specifications.

7.
Connect the exhaust pipes to the

exhaust manifolds.

8. Lower the vehicle.

9. Pull the actuator solenoid and

brake warning switch wiring harness
through the two holes in the dash

panel from inside the car. Seat the

wiring harness grommets in the dash

panel.

10.
Connect the actuator solenoid

and brake warning switch wiring har-

ness connectors to the control mo-

dules.
'

11.
Position the control module in

the bracket under the glove box and

install the retaining screw.

12.
In the engine compartment con-

nect the air hose to the air filter and

position the hose clamp.

13.
Connect the vacuum hose to the

engine vacuum manifold fitting. In-

stall the engine air cleaner.

14.
Bleed the rear brake system and

centralize the pressure differential

valve.

15.
Raise the rear wheels. Apply

the brakes with the rear wheels turn-

ing to verify proper operation of the

anti-skid control system.

ANTI-SKID CONTROL MODULE

REMOVAL

Refer to Fig. 39.

1.
Remove the retaining strap hold-

ing the harnesses.

2.
Remove the screw that attaches

the forward end of the control module

retainer to the support assembly.

3.
Lower the forward end of the

control module and retainer from the

support assembly; move the module

and retainer forward slightly until the

flange clears the slot in the support

assembly.

4.
Disconnect the five wiring har-

ness plugs from the control module.

5.
Remove the control module from

the vehicle.

INSTALLATION

1.
Connect the five wiring harness

plugs to the control module. Only one

arrangement is possible.

2.
Position the control module in

the retainer, orienting the module per

the markings on it, and insert the re-

tainer flange into the slot at the rear

of the support assembly.

3.
Pivot the retainer and control

module upward and align the screw

hole in the forward end of the retainer

with the hole in the support bracket

assembly. Install the retaining screw.

4.
Test the vehicle on the hoist to

verify correct operation of the skid

control system.
5.-
Secure the wiring to the module

support extension with the retaining

strap.

ANTI-SKID CONTROL SENSOR

REMOVAL

Refer to Fig. 39.

1.
Raise the vehicle on a hoist.

2.
Remove the rear wheel and tire

assembly.

3.
Remove the three Tinnerman

nuts (3) and remove the brake drum.

4.
Disconnect the sensor lead from

the rear wiring harness.

5.
Unseat the sensor lead grommet

pushing it to the inside of the brake

assembly.

6. Remove the four nuts that retain

the sensor to the backing plate and

pull the axle shaft, sensor assembly

and wheel bearing assembly from the

axle housing.

7.
Press the wheel bearing retainer

and wheel bearing off the axle shaft

(Refer to Part 4-2).

8. Remove the sensor assembly and

press the rotor off the shaft with tool

T69P-2B384-A Detail 2 and TOOL

1225-DA.

INSTALLATION

1.
Press a new rotor onto the axle

shaft. Install a new sensor assembly

on the shaft with tool T69P-

2B384-ADetail 1 and TOOL 1225-

DA, and press the bearing and bear-

ing retainer onto the shaft (Refer to

Part 4-2).

2.
Insert the axle shaft assembly in

the rear axle housing onto the four

backing plate retaining bolts, feeding

the sensor lead through the hole in the

backing plate.

3.
Seat the sensor lead grommet in

the backing plate.

4.
Install the four nuts on the re-

taining bolts and tighten to specifica-

tions.

5.
Connect the sensor lead to the

rear wiring harness and install two re-

taining straps.

6. Install the rear brake drum and

retain with the Tinnerrhan drum re-

taining nuts.

7.
Install the rear wheel and tire as-

sembly and tighten the wheel nuts to

specifications.

8. Test the vehicle on the hoist to

verify proper operation of the skid

control system.procarmanuals.com