1969 FORD MUSTANG air bleeding

02-01-01

02-01-01

GROUP

2

PART
2-1
PAGE

General Brake Service 02-01-01

PART
2-2

Brake System 02-02-01
PART
2-3

Specifications
PAGE

02-03-01

Part
2-1
General Brake Service

COMPONENT INDEX

ANTI SKID CONTROL SYSTEM

Tests

BRAKE BOOSTER

Adjustments

Cleaning
and
Inspection

Tests

BRAKE PEDAL

Free Height Test

Total Travel Test

DISC BRAKES

Cleaning
and
Inspection

Service Precautions

DRUM BRAKES

Cleaning
and
Inspection

HYDRAULIC SYSTEM BLEEDING

PARKING BRAKE CONTROL

Vacuum Release Test

PARKING BRAKE LINKAGE

Adjustment

PRESSURE DIFFERENTIAL VALVE

Adjustment (Centralize)
MODEL APPLICATION
All
Models

01-04

01-07

01-02

01-01

01-01

01-07

01-07

01-08

01-05

01-07
Ford
N/A

01-03

01-03
Mercury
N/A

01-03

01-03
Meteor
N/A

01-03

01-03
Cougar
N/A

N/A

01-03
Fairlane
N/A

N/A

01-03
F

alcon
N/A

N/A

01-03
Montego
N/A

N/A

01-03
Mustang
N/A

N/A

01-03
Lincoln-
Continental
N/A

01-03

01-04
Thunderbird
01-03

01-03

01-04
Continental-
Mark III
01-03

01-03

01-04

A page number indicates that the item
is for the
vehicle listed
at
the head
of the
column.

N/A indicates that the item
is not
applicable
to
the vehicle listed.

1 BRAKE SYSTEM TESTS

Always check
the
fluid level
in the

master cylinder before performing
the

test procedures.
If the
fluid level
is not

within
1/4
inch
of the top of the mas-

ter cylinder reservoirs,
add
Ford

Brake Fluid
—
Extra Heavy Duty —

Part Number C6AZ-19542-A
(ESA-

M6C25-A)
or
equivalent
for all
brake

applications.
The
extra heavy duty

brake fluid
is
colored blue
for
identifi-

cation purposes.
Do not mix low tem-

perature brake fluids with
the
speci-

fied brake fluid.

Should
one of the
wheel brakes
be

locked
and the
vehicle must
be
moved,

open
the
bleeder screw long enough
to

let
out a few
drops
of
brake fluid.

This bleeding operation will release

the brakes
but
will
not
correct
the

cause
of
trouble.
BRAKE PEDAL FREE

HEIGHT
AND
TRAVEL

MEASUREMENTS

With
the
engine running
for
full

power brake operation, measure
the

brake pedal free height,
and
check
the

brake pedal travel with
the use of the

Brake Pedal Pressure Gauge, Tool

WRE-5OO-5O
as
follows:

BRAKE PEDAL FREE HEIGHT

MEASUREMENT

1.
Insert
a
slender, sharp pointed

prod through
the
carpet
and
sound

deadener
to the
dash panel metal
and

measure
the
distance
to the
brake

pedal
(Fig. 1).

2.
If the
position
of the
pedal
is not

within specification, check
the
brake
pedal linkage
for
missing, worn,
or

damaged bushings,
or
loose attaching

bolts
and
replace them,
if
required.

3.
If the
pedal free height
is
still

out
of
specification, check
the
brake

pedal booster
or
master cylinder
to be

sure
the
correct parts
are
installed.

Replace
the
worn
or
damaged parts
as

necessary.

BRAKE PEDAL TRAVEL

MEASUREMENT

1.
Install
a
Brake Pedal Effort

Gauge
on the
brake pedal
pad
(Fig. 2).

2.
Hook
a
steel measuring tape
to

the brake pedal
as
shown
in Fig. 1.

Measure
and
record
the
distance from

the brake pedal free height position
to

the reference point, which
is at the six
procarmanuals.com

02-01-03
Brakes

02-01-03

vacuum system is operating, the pedal

will tend to fall away under foot pres-

sure and less pressure will be required

to hold the pedal in the applied posi-

tion. If no action is felt, the vacuum

booster system is not functioning.

If the brake pedal movement feels

spongy, bleed the hydraulic system to

remove air from the system. Refer to

Hydraulic System Bleeding, Part 1,

Section 2.

VACUUM TESTS—VACUUM

RELEASE PARKING BRAKES

Visually check the operation of the

brake linkage as the brake pedal is

depressed. Then, check the operation

of the brake linkage when the manual

release lever is activiated. These

checks should indicate whether the

manual parking brake control linkage

is operating properly or requires re-

pair or adjustment due to inability of

the parking brake to hold against

moderate vehicle movement. Perform

tests of the parking brake system and

controls after making certain the link-

age and manual controls operate

properly.

When testing a parking brake vacu-

um release system, a minimum of 10

inches of vacuum (Hg.) should be

available at all points where vacuum is

applied. This can be checked with a

Rotunda Fuel Pump Tester Gauge

(ARE345) and two Distributor Tester

hose adapters (Marked Q) connected

together with a coupling. This allows

the Fuel Pump Tester Gauge hose to
be adapted to any other vacuum hose

or rubber connector in the vacuum

systems.

Failure to maintain 10 inches of

vacuum (Hg.) during vacuum system

tests could be caused by a loose hose

connection, resulting in a vacuum

leak. When checking for vacuum be-

tween two points, trace the hose along

the entire routing to be sure it is not

crossed with another hose and con-

nected to the wrong connection.

All of the vacuum parking brake

control checks are to be performed

with the engine running at idle speed.

Leaks in the parking brake hoses or

a disconnected or improperly con-

nected hose can usually be found by

listening for a hissing sound along the

hose routings. Under no circumstances

should air pressure be applied to the

vacuum system as the actuator dia-

phragm in the parking brake vacuum

motor may be damaged.

1.
Start the engine and run it at

idle speed. With the transmission shift

control in neutral, depress the parking

brake pedal to apply the parking

brake. Move the transmission shift

control to D range and observe the

parking brake pedal to see that the

pedal moves upward and the parking

brake releases. If the parking brake

releases, the parking brake vacuum

control is working properly.

2.
If the parking brake does not re-

lease, test for vacuum at the steering

column neutral switch port in the

junction block, vacuum lines and the

parking brake release vacuum motor.

Use the Rotunda Vacuum and Fuel
Pump Tester 345. This can be accom-

plished by removing the hose from

each component and attaching it to

the vacuum gauge. Connect two dis-

tributor tester vacuum hose adapters

together with a coupling as a connec-

tor to attach the gauge. A minimum

of ten inches of vacuum is required to

actuate the parking brake vacuum

motor. Do not remove any of the vac-

uum hoses from the junction block

unless the junction block is being re-

placed, as the plastic nipples are thin

and very brittle and damage may re-

sult. If a minimum reading is not

present when checking each of the

aforementioned components, they

must be replaced.

ROAD TEST

A road test should be conducted

only when the operator is sure the

brakes will stop the vehicle.

If the road test reveals one or more

problem conditions, correct all mal-

functions of the vacuum system, brake

booster and hydraulic system prior to

removing brake drums, brake calipers,

brake shoes and linings or backing

plates.

ANTI-SKID CONTROL

SYSTEM TESTS

No adjustments or repairs are to be

performed on the skid control system.

Damaged or worn parts are to be re-

placed.

Refer to Ford Car and Truck Diag-

nosis Manual for Testing procedures.

COMMON ADJUSTMENTS AND REPAIRS

PARKING BRAKE LINKAGE

ADJUSTMENT

FORD, MERCURY, METEOR,

FAIRLANE, MONTEGO,

FALCON, MUSTANG

AND COUGAR

Check the parking brake cables

when the brakes are fully released. If1

the cables are loose, adjust them as

follows:

1.
Fully release the parking brake

pedal by pulling the release lever.

2.
Depress the parking brake pedal

until it is engaged in the first notch of

the control. On a vacuum release

brake, the first notch will be approxi-

mately two inches of pedal travel.

3.
Raise the vehicle. With the

transmission in neutral, turn the ad-

justing nut forward against the equal-

izer (Figs. 3 and 4) until there is 100
L.H. REAR WHEEL CABLE -2A809> 2A791 (2 REQUIRED)

EQUALIZER-TO-ACTUATOR CABLE-2A815

R.H. REAR WHEEL CABLE-2A635

ADJUSTING NUT-2A812

H 1537-C

FIG. 3—Parking Brake Adjustment—Ford, Mercury, Meteor,

Thunderbird and Continental Mark IIIprocarmanuals.com

02-01-05
Brakes

02-01-05

1.
Disconnect the master cylinder

from the booster assembly and secure

away from the booster without discon-

necting the brake tubes.

2.
Reinstall the air filter assembly

on the booster if it was removed with

the master cylinder (Fig. 8).

3.
Install and tighten the master

cylinder retaining nuts to retain the

air filter assembly securely against the

booster body and to seal the booster

bellows against air leaks.

4.
Place the gauge against the

master cylinder mounting surface of

the air filter assembly.

5.
Adjust the push rod screw to

provide a slight tension against the

inner edge of the adjustment gauge

slot. (Approximately 5 pounds of ten-

sion against the push rod is required

to assure that the push rod is firmly

seated in the booster assembly.)

6. Remove the retaining nuts from

the booster master cylinder mounting

studs.

7.
Install the master cylinder on the

brake booster and tighten the retain-

ing nuts to the specified torque.

The push rod length verification of

the Bendix power brake booster

assemblies is accomplished as follows:

1.
Disconnect the master cylinder

from the booster assembly and secure

away from the booster without discon-

necting the brake tubes.

2.
Adjust the push rod screw to

provide a slight tension against the

inner edge of the adjustment gauge

slot. (Approximately 5 pounds of ten-
sion against the push rod is required

to assure that the push rod is firmly

seated in the booster assembly.) See

Figure 8.

3.
Install the master cylinder on the

brake booster and tighten the retain-

ing nuts to the specified torque.

Do not set up side forces on the

push rod as it may break the valve

plunger.

This is an approximate adjustment

only. To verify the adjustment, look

through the make-up (rear) port of the

master cylinder when installing the

master cylinder to the booster. The

master cylinder piston should not

move more than 0.015 inch as it con-

tacts the push rod. No movement

(exact contact) is ideal.

HYDRAULIC SYSTEM BLEEDING

AND CENTRALIZING OF THE

DIFFERENTIAL VALVE

When any part of the hydraulic sys-

tem has been disconnected for repair

or replacement, air may enter the sys-

tem and cause spongy pedal action.

Bleed the hydraulic system after it has

been properly connected, to be sure

that all air is expelled.

MANUAL BLEEDING

The Lincoln Continental hydraulic

brake system is to be bled only with

pressure bleeding equipment.

The primary and secondary (front

MANIFOLD CHECK VALVE-2365 19-25 IN. LB.

TIGHTEN RETAINING NUTS

TO SECURE AIR FILTER

AGAINST BOOSTER BODY

AND BELLOWS

ADJUST PUSH ROD SCREW TO

PROVIDE A SLIGHT TENSION

(APPROXIMATELY 5 LBS.)

AGAINST THE GAUGE

PUSH ROD GAUGE
and rear) hydraulic brake systems are

individual systems and are bled separ-

ately. Bleed the longest line first on

the individual system being serviced.

During the complete bleeding opera-

tion,
DO NOT allow the reservoir to

run dry. Keep the master cylinder res-

ervoirs filled with Ford Fluid—Extra

Heavy Duty — Part Number C6AZ-

19542-A (ESA-M6C 25-A). The extra

heavy duty brake fluid is colored blue

for identification purposes. Do not

mix low temperature brake fluids with

the specified fluid during the bleeding

operations. Never re-use brake fluid

which has been drained from the hy-

draulic systems.

1.
If the master cylinder is

equipped with a bleed screw, loosen

the bleed screw. Push the brake pedal

down slowly through its full travel.

Close the bleeder fitting and return

the pedal to the fully released posi-

tion. Repeat this operation until fluid

is free of air bubbles, then tighten the

bleeder screw. Do not use the second-

ary piston stop screw, located on the

bottom of the master cylinder to bleed

the brake system. Loosening or re-

moving this screw could result in dam-

age to the secondary piston or stop

screw.

2.
To bleed the secondary (rear)

brake system, position a suitable 3/8

inch box wrench (Fig. 9) on the bleed-

er fitting on the brake wheel cylinder.

Attach a rubber drain tube to the

bleeder fitting. The end of the tube

should fit snugly around the bleeder

fitting.

APPROXIMATELY 45°

PUSH ROD ADJUSTMENT-MIDLAND-ROSS

FIG. 8—Brake Booster Push Rod Measurement
PUSH ROD ADJUSTMENT-BENDIX

H1589-A
H1300-B

. 9—Wrench for Bleeding

Brake Hydraulic System

3.
Submerge the free end of the

tube in a container partially filled with

clean brake fluid, and loosen the

bleeder fitting approximately 3/4 turn.

4.
Push the brake pedal down slow-

ly through its full travel. Close the

bleeder fitting, then return the pedal

to the full-released position. Repeat

this operation until air bubbles cease

to appear at the submerged end of the

bleeder tube.

5.
When the fluid is completely free

of air bubbles, close the bleeder fitting

and remove the bleeder tube.

6. Repeat this procedure at the

brake wheel cylinder on the oppositeprocarmanuals.com

02-01-06

Brakes

02-01-06

side.
Refill the master cylinder reser-

voir after each wheel cylinder is bled

and install the master cylinder cover

and gasket. Be sure the diaphragm

type gasket is properly positioned in

the master cylinder cover. When the

bleeding operation is completed, the

fluid level should be filled to within

1/4 inch of the top of the reservoirs.

7. If the primary (front brake) sys-

tem is to be bled. Repeat steps 2

through 6 at the right front brake cal-

iper or cylinder and ending at the left

front brake caliper or cylinder.

8. On disc brake equipped models

be sure that the front brake pistons

are returned to their normal positions

and that the shoe and lining assem-

blies are properly seated by depressing

the brake pedal several times until

normal pedal travel is established.

9. Centralize the pressure differen-

tial valve. Refer to the Centralizing

the Pressure Differential Valve proce-

dures which follow.

PRESSURE BLEEDING

The Lincoln Continental hydraulic

brake system is to be bled only with

pressure bleeding equipment.

Bleed the longest lines first. The

bleeder tank should contain enough

new Ford Brake Fluid to complete the

bleeding operation. Use Ford Brake

Fluid — Extra Heavy Duty — Part

Number C6AZ-19542-A (ESA-

M6C25-A) or equivalent for all brake

applications. The brake fluid is col-

ored blue for identification purposes.

Do not mix low temperature brake

fluid with the specified brake fluid

during the bleeding operations. Never

re-use brake fluid that has been

drained from the hydraulic system.

The tank should be charged with ap-

proximately 10 to 30 pounds of air

pressure. Never exceed 50 pounds

pressure.

1.
Clean all dirt from the master

cylinder reservoir cover.

2.
Remove the master cylinder res-

ervoir cover and rubber gasket, and

fill the master cylinder reservoir with

the specified brake fluid. Install the

pressure bleeder adapter tool to the

master cylinder, and attach the bleed-

er tank hose to the fittng on the

adapter.

Master cylinder pressure bleeder

adapter tools can be obtained from

the various manufacturers of pressure

bleeding equipment. Follow the in-

structions of the manufacturer when

installing the adapter.

3.
If the master cylinder is

equipped with a bleed screw, loosen
the bleed screw and bleed the master

cylinder until the fluid is free of air

bubbles; then, tighten the bleed screw.

Do not use the secondary piston stop

screw, located on the bottom of the

master cylinder, to bleed the master

cylinder.

4.
If the rear wheel cylinders, the

secondary brake system, are to be

bled, position a 3/8 inch box wrench

(Fig. 9) on the bleeder fitting on the

right rear brake wheel cylinder. At-

tach a bleeder tube to the bleeder fit-

ting. The end of the tube should fit

snugly around the bleeder fitting.

5. Open the valve on the bleeder

tank to admit pressurized brake fluid

to the master cylinder reservoir.

6. Submerge the free end of the

tube in a container partially filled with

clean brake fluid, and loosen the

bleeder fitting.

7.
When air bubbles cease to ap-

pear in the fluid at the submerged end

of the bleeder tube, close the bleeder

fitting and remove the tube.

8. Repeat steps 3 through 7 at the

left rear wheel cylinder.

9. If the vehicle is equipped with

disc brakes, repeat steps 4 through 7,

starting at the right front disc caliper

and ending at the left front disc cali-

per.

On Lincoln Continental models the

front wheel and tire assemblies must
be removed to gain access to the

bleeder fittings on the calipers. Also

on Lincoln Continental models the

metering valve release rod must be

pulled outward and held a minimum

of 1/16 inch (Fig. 10) while bleeding

the primary brake system.

10.
If the vehicle contains drum-

type front brakes and the primary

(front) brake system is to be bled, re-

peat steps 4 through 7, starting at the

right front wheel cylinder ending at

the left front wheel cylinder.

11.
When the bleeding operation is

completed, close the bleeder tank

valve and remove the tank hose from

the adapter fitting.

12.
On disc brake equipped ve-

hicles,
be sure that the front brake

pistons are returned to their normal

positions and that the shoe and lining

assemblies are properly seated by dep-

ressing the brake pedal several times

until normal pedal travel is esta-

blished.

13.
Remove the Pressure Bleeder

Adapter Tool. Fill the master cylinder

reservoirs to within 1/4 inch of the

top.
Install the master cylinder cover

and gasket. Be sure the Diaphragm

type gasket is properly positioned in

the master cylinder cover.

14.
Centralize the pressure differen-

tial valve as follows.

METERING VALVE

BLEEDER RETAINER

SEE

VIEW A

RELEASE ROD

FIG. 10—Disc Brake Metering Valve—Lincoln Continental
HI 644-Aprocarmanuals.com

02-02-08
Brake System

02-02-08

Tool-HRE-8650

JUST SET TO DRUM

DIAMETER HERE . . .
FIND CORRECT BRAKE

SHOE DIAMETER HERE

H1416-A

FIG.
7
7—Adjusting Brake Shoes Using Tool HRE-8650

BOOT

BOOT

PISTON
. BLEEDER .

CYLINDER
SCREW RETURN SPRING PIST0N

H1385-B

FIG. 72—Brake Wheel Cylinder—Typical

DISASSEMBLY

1.
Remove the links and the rubber

boots from the ends of the brake cyl-

inder. Remove the pistons, cups, and

return spring from the cylinder bore

(Fig. 12).

2.
Remove the bleeder screw from

the cylinder.

INSPECTION

1.
Wash all parts in clean brake

fluid. Dry with compressed air.

2.
Replace scored pistons. Always

replace the rubber cups and dust

boots.
3.
Inspect the cylinder bore for

score marks or rust. If either condi-

tion is present the cylinder bore must

be honed. However, the cylinder

should not be honed more than 0.003

inch beyond its original diameter.

4.
Check the bleeder hole to be sure

that it is open.

ASSEMBLY

1.
Apply a light coating of heavy-

duty brake fluip! to all internal parts.

2.
Thread the bleeder screw into the

cylinder and tighten securely.

3.
Insert the return spring, cups,

and pistons into their respective posi-

tions in the cylinder bore (Fig. 12).
Place a boot over each end of the cyl-

inder. Bleed the brake system.

HYDRAULIC LINE REPAIR

Steel tubing is used throughout the

brake system with the exception of the

flexible hoses at the front wheels and

at the fear axle housing brake tube

connection (Figs. 17 thru 21).

Always bleed the applicable pri-

mary or secondary brake system after

primary or secondary brake system

hose or line replacement. Centralize

the pressure differential valve after

bleeding the system.

BRAKE TUBE

REPLACEMENT

If a section of the brake tubing be-

comes damaged, the entire section

should be replaced with tubing of the

same type, size, shape and length.

Copper tubing should not be used in a

hydraulic system. When bending

brake tubing to fit underbody or rear

axle contours, be careful not to kink

or crack the tube.

All brake tubing should be double

flared properly to provide good leak-

proof connections. Clean the brake

tubing by flushing with clean brake

fluid before installation.

When connecting a tube to a hose,

tube connector, or brake cylinder,

tighten the tube fitting nut to specified

torque with Milbar tool 1112-144 or

equivalent.

BRAKE HOSE

REPLACEMENT

A flexible brake hose should be re-

placed if it shows signs of softening,

cracking, or other damage.

When installing a new front brake

hose,
position the hose to avoid con-

tact with other chassis parts. Place a

new copper gasket over the hose fit-

ting and thread the hose assembly into

the front wheel cylinder. Engage the

opposite end of the hose to the brack-

et on the frame. Install the horsesho-

e-type retaining clip, and connect the

tube to the hose with the tube fitting

nut (Figs. 17 thru 21).

A rear brake hose should be in-

stalled so that it does not touch the

muffler outlet pipe or shock absorber.

Thread the hose into the rear brake

tube connector. Engage the front end

of the hose to the bracket on the

frame. Install the horseshoe-type re-

taining clip, and connect the tube to

the hose with the tube fitting nut.procarmanuals.com

02-02-20
Brake System

02-02-20

1.
Disconnect the stoplight switch

wires at the connector. Remove the

spring retainer. Slide the stop light

switch off the brake pedal pin just far

enough to clear the end of the pin,

then liftfthe switch straight upward

from the pin. Use care to avoid switch

damage during removal.

2.
Slide the master cylinder push

rod and the nylon washers and bush-

ings off the brake pedal pin.

3.
Remove the brake tube from the

primary and secondary outlet ports of

the master cylinder.

4.
Remove the cap screws and lock-

washers that secure the master cylin-

der to the dirSh panel and lift the cyl-

inder forward and upward from the

vehicle.

Installation

1.
Position the boot on the push

rod and secure the boot to the master

cylinder. Carefully insert the master

cylinder push rod and boot through

the dash panel opening and position

the master cylinder on the panel.

2.
Install the cap screws at the dash

panel and torque them to specifica-

tion.

3.
Coat the nylon bushings with

SAE 10W oil. Install the nylon wash-

er and bushing on the brake pedal pin.

4.
Position the stop light switch on

the brake pedal pin, install the nylon

bushing and washer and secure them

in position with the spring retainer.

5.
Connect the wires at the stop

light switch connector.

6. Connect the brake lines to the

master cylinder leaving the brake line

fittings loose.

7.
Fill the master cylinder with the

specified brake fluid to within 1/4

inch of the top of the dual reservoirs.

Use Ford Brake Fluid— Extra Heavy

Duty-Part Number C6AZ-19542-A

(ESA-M6C25-A) or equivalent for all

drum brake applications. The extra

heavy duty brake system fluid is col-

ored blue for identification. Do not

mix low temperature brake fluids with

the specified fluid for the power disc

brake system.

8. Bleed the dual-master cylinder

and the primary and secondary brake

systems. Centralize the pressure dif-

ferential valve. Refer to Hydraulic

System Bleeding and Centralizing of

the Differential Valve, Part 2-1, Sec-

tion 2 for proper procedure.

9. Operate the brakes several times,

then check for external hydraulic

leaks.
FAIRLANE, MONTEGO,

FALCON, MUSTANG AND

COUGAR

Removal

Refer to Figs. 27 and 28.

1.
Working from inside the vehicle

below the instrument panel, disconnect

the master cylinder push rod from the

brake pedal assembly. The push rod

cannot be removed from the master

cylinder.

2.
Disconnect the stoplight switch

wires at the connector. Remove the

hairpin retainer. Slide the stop light

switch off the brake pedal pin just far

enough to clear the end of the pin,

then lift the switch straight upward

from the pin. Use care to avoid switch

damage during removal.

3.
Slide the master cylinder push

rod and the nylon washers and bush-

ings off the brake pedal pin.

4.
Remove the brake tubes from

the primary and secondary outlet

ports of the master cylinder.

5.
Remove the lock nuts or cap

screw and lockwashers that secure the

master cylinder to the dash panel and

lift the cylinder forward and upward

from the car.
Installation

Refer to Figs. 27 and 28.

1.
Position the boot on tie push

rod and secure the boot to the master

cylinder. Carefully insert the master

cylinder push rod and boot through

the dash panel opening.

2.
On Fairlane, Falcon or Montego

models, position the gasket and mas-

ter cylinder on the mounting studs on

the dash panel. Install the lock nuts

on the studs at the dash panel and

torque them to specification.

3.
On Mustang or Cougar models,

position the gasket and master cylin-

der on the dash panel. Install the re-

taining screws and torque them to

specification. Coat the nylon bushings

with SAE 10W oil. Install the nylon

washer and bushing on the brake

pedal pin.

4.
Position the stop light switch on

the brake pedal pin, install the nylon

bushing and washer and secure them

in position with the spring retainer.

5.
Connect the wires at the stop

light switch connector.

6. Connect the brake lines to the

master cylinder and tighten to speci-

fied torque.

7.
Fill the master cylinder with the

specified brake fluid to within 1/4

MASTER CYLINDER

IDENTIFICATION
UPPER STUD

SHAFT (AUTOf/lATIC

TRANSMISSION)

CLIP

BRAKE PEDAL

BUSHING SUPPORT

TUBE-2B253

TUBE-2A040
CLUTCH

PEDA_

LOWER STUD
STOP LITE

SWITCH

/ 13480

MASTER CYLINDER

PUSH ROD
BRAKE PEDAL

H 1556-C

FIG. 27—Dual Master Cylinder Installation—Non Power Brake

Fairlane, Montego, and Falconprocarmanuals.com

02-02-21
Brake System

02-02-21

INSTALLATION

CLUTCH ASSIST

SPRING

MASTER CYLINDER

2140

FIG. 28 —Dual Master Cylinder Installation—

Non Power Brake—Mustang and Cougar

inch of the top of the dual reservoirs.

Use Ford Brake Fluid- Extra Heavy

Duty-Part Number C6AZ-19542-A

for all brake applications. The brake

fluid is colored blue for identification.

Do not mix low temperature brake

fluids with the specified fluid for the

brake system.

8. Bleed the dual-master cylinder

and the primary and secondary brake

systems. Centralize the pressure dif-

ferential valve. Refer to Hydraulic

System Bleeding and Centralizing of

the Differential Valve, Part 2-1, Sec-

tion 2 for the proper procedure.

9. Operate the brakes several times,

then check for external hydraulic

leaks.

DUAL MASTER CYLINDER-

POWER BRAKES

REMOVAL

1.
Remove the brake tubes from

the primary and secondary outlet

ports of the master cylinder (Figs. 29

thru 33).

2.
Remove the two nuts and two

lock washers attaching the master cyl-

inder to the brake booster assembly.

3.
Slide the master cylinder forward

and upward from the vehicle.
SHAFT

AUTOMATIC

TRANSMISSION

CLUTCH PEDAL

BUMPER STOP
H1638-A
1.
Before installing the mater cyl-

inder, check the distance t; m the

outer end of the booster ass;. ,ihi\

push rod to the master .>',nder

mounting surface. Turn the nu->h rod

adjusting screw in or out as required

to obtain the specified length. Refer to

Part 2-1, Section 2. Power Brake

Master Cylinder Push Rod Adjust-

ment for the proper procedure.

2.
Position the master cylinder as-

sembly over the booster push rod and

onto the two studs on the booster as-

sembly (Figs. 29 thru 37).

3.
Install the attaching nuts and

lock washers and torque them to spec-

ifications.

4.
Install the front and rear brake

tubes to the master cylinder outlet fit-

tings.

5.
Fill the master cylinder with the

specified brake fluid to within 1/4

inch of the top o\ the dual reservoirs.

Use Ford Brake Fluid Fxtra Heavy

Duty Part Number C6AZ-19542-A

(ESA-M6C25-A) for all brake appli-

cations. The extra htaw duty brake

fluid is colored blue for identification.

Do not mix low temperature brake

fluids with the specified fluids for the

disc brake svstem.

CLIP

W
'0 AIR CONDITIONING

BUSHING

SHAFT

BUSHING

BRAKE PEDAL

SPACER

H 1642-A

FIG. 29—Master Cylinder Installation-

Ford,
Mercury and Meteor
-Power Brake-procarmanuals.com

02-02-22
Brake System

02-02-22

BRAKE VACUUM BOOSTER -2005

AUTOMATIC I

TRANSMISSION

HAIR PIN RETAINER

330699-S2

SPACER

STOP LIGHT SWITCH-13480

STANDARD

TRANSMISSION
BUSHING
BUSHING

PUSH ROD

BRAKE PEDAL ASSEMBLY
CLUTCH

PEDAL

ASSEMBLY

H 1557-C

FIG. 30—Master Cylinder Installation—Power Brake-

Fairlane, Montego and Falcon

ASSIST

SPRING BRACKET CLUTCH ASSIST

\ SPRING

BRAKE PEDAL

SHAFT

CLUTCH

PEDAL

CLUTCH PEDAL

TO EQUALIZER ROD

HI643-
A

FIG. 31—Master Cylinder Installation-

Power Brake—Mustang and Cougar
6. Bleed the dual-master cylinder

and the primary and secondary brake

systems. Centralize the pressure dif-

ferential valve. Refer to H>draulic

System Bleeding and Centralizing of

the Differential Valve, Part 2-1, Sec-

tion 2 for the proper procedure.

7.
Operate the brakes several times,

then check for external hydraulic

leaks.

PRESSURE DIFFERENTIAL

VALVE AND PROPORTIONING

VALVE ASSEMBLY

REMOVAL

1.
Disconnect the brake warning

light wire from the pressure differen-

tial valve assembly switch (Figs. 17

thru 21). To prevent damage to the

brake warning switch wire connector,

expand the plastic lugs to allow re-

moval of the shellwire connector from

the switch body.

2.
Loosen the tube nuts connecting

the primary and secondary inlet and

outlet tubes at the pressure differential

valve assembly and remove the tubes.

3.
Remove the screw or screws re-

taining the pressure differential valve

assembly to the chassis and remove

the valve assembly.

4.
On disc brake equipped vehicles,

place the pressure differential valve

assembly and mounting bracket in a

vise.
Loosen the proportioning valve

tube nuts at the differential valve and

at the proportioning valve. Remove

the proportioning valve from the

mounting bracket.

5.
If the differential valve is to be

replaced, remove the brake warning

lamp switch and install the switch in

the new differential valve. The pres-

sure differential valve assembly, the

brake warning lamp switch, and the

proportioning valve are separate units

and each is serviced as a separate as-

sembly only.

INSTALLATION

1.
On disc brake equipped vehicles,

connect the proportioning valve inlet

and outlet tubes to the proportioning

valve and differential valve bodies.

Tighten the tube nuts to specification.

2.
Mount the pressure differential

valve assembly on the chassis and in-

stall the attaching screw or screws.

3.
Connect the primary and second-

ary inlet and outlet tubes to the pres-

sure differential valve assembly and

tighten the tube nuts to specifications.procarmanuals.com