1969 FORD MUSTANG ground clearance

02-02-39
Brake System

02-02-39

MAJOR REPAIR OPERATIONS

BRAKE DRUM REFINISHING

Minor scores on a brake drum can

be removed with sandpaper. A drum

that is excessively scored or shows a

total indicator runout of over 0.007

inch should be turned down. Remove

only enough stock to eliminate the

scores and true up the drum. The refi-

nished diameter must not exceed 0.060

inch oversize.

Check the inside diameter of the

brake drum with a brake drum mi-

crometer (Tool FRE-14^1).

If the drum diameter is less than

0.030 inch oversize after refinishing^

standard lining may be installed. If

the drum diameter is 0.030—0.060

inch oversize after refinishing, oversize

lining must be installed.

After a drum is turned down, wipe

the refinished surface with a cloth

soaked in clean denatured alcohol. If

one drum is turned down, the opposite

drum on the same axle should also be

cut down to the same size.

ROTOR REFINISHING

Rotunda Disc Brake Attachment,

FRE-2249-2, is the only recommended

tool to refinish the disc brake rotors.

The step-by-step resurfacing procedure

provided with the tool must be ad-

hered to.

The finished braking surfaces of the

rotor must be flat and parallel within

0.0007 inch; lateral runout must not

exceed 0.003 inch total indicator read-

ing, and the surface finish of the brak-

ing surfaces are to be 80/15 micro

inches. The minimum limiting dimen-

sions (Figs. 11 and 12, Part 2-1) from

the inboard bearing cup to the out-

board rotor face and from the inboard

bearing cup to the inboard rotor face

must be observed when removing ma-

terial from the rotor braking surfaces.

On all models except Lincoln Con-

tinental, the limiting dimensions are to

be measured with a ball and gage bar

(Rotunda Kit FRE-70160).

BRAKE SHOE RELINING

Brake linings that are worn to with-

in 1/32 inch of the rivet head or are

less than 0.030 inch thick (bonded lin-

ing) or have been contaminated with

brake fluid, grease or oil must be re-

placed. Failure to replace worn linings

will result in a scored drum. When it
is necessary to replace linings, they

must also be replaced on the wheel on

the opposite side of the vehicle.

Inspect brake shoes for distortion,

cracks, or looseness. If this condition

exists,
the shoe must be discarded. Do

not attempt to repair a defective brake

shoe.

1.
Wash the brake shoes thoroughly

in a clean solvent. Remove all burrs

or rough spots from the shoes.

2.
Check the inside diameter of the

brake drum with a brake drum mi-

crometer (tool FRE-1431). If the di-

ameter is less than 0.030 inches over-

size,
standard lining may be installed.

If the diameter is 0.030—0.060 inches

oversize, oversize lining should be in-

stalled.

3.
Position the new lining on the

shoe.
Starting in the center, insert and

secure the rivets, working alternately

towards each end. Replacement lin-

ings are ground and no further grind-

ing is required.

4.
Check the clearance between the

shoe and lining. The lining must seat

tightly against the shoe with not more

than 0.008 inch clearance between any

two rivets.

RETAINER - 2B245
DUAL MASTER CYLINDER

DISASSEMBLY

1.
Clean the outside of the master

cylinder and remove the filler cover

and diaphragm. Pour out any brake

fluid that remains in the cylinder. Dis-

card the old brake fluid.

2.*
Remove the secondary piston

stop bolt from the bottom of the cyl-

inder (Figs. 40 and 41).

3.
Remove the bleed screw, iL re-

quired.

4.
Depress the primary piston and

remove the snap ring from the retain-

ing groove at the rear of the master

cylinder bore (Fig. 42). Remove the

push rod and the primary piston as-

sembly from the master cylinder bore.

Do not remove the screw that retains

the primary return spring retainer, re-

turn spring, primary cup and protec-

tor on the primary piston. This assem-

bly is factory pre-adjusted and should

not be disassembled.

5.
Remove the secondary piston as-

sembly. Do not remove the outlet tube

seats,
outlet check valves and outlet

SECONDARY SYSTEM

BRAKE OUTLET
COVER -2166

GASKET-2167

MASTER CYLINDER -2155

SNAP RING -7821

BOOT

PUSH ROD

PRIMARY PISTON

ASSEMBLY - 2169

tTUBE SEAT-

2B220
* SECONDARY PISTON

ASSEMBLY - 2A502

• NOT USED ON POWER BRAKE EQUIPPED VEHICLES

fNOT SERVICED

•REPLACE AS AN ASSEMBLY ONLY

H 1499-B

FIG. 40— Dual Master Cylinder Disassembled—Except Disc Brakesprocarmanuals.com

03-05-07

Steering Columns And Linkage
03-05-07

the steering column
(F in Fig. 8).

7.
Disconnect
the
transmission shift

rod
at the
shift tube.

8. Working under
the
hood, install

the aligning spacer (Fig.
9)
around
the

visible portion
of the
steering shaft

and slide
it up the
shaft into
the
steer-

ing column.
It may be
necessary
to

move
the
shaft back
and
forth
to
com-

pletely install
the
spacer.

9.
At
this point
the
steering column

assembly, being loose,
may
have

dropped toward
the
steering gear

grounding
the
steering shaft
on the

steering gear input shaft.
To
properly

establish
the
steering shaft
to
steering

gear clearance, insert
a 1/8
diameter

rod
or
drill through
the
opening
in the

upper half
of the
flex coupling.

10.
Tighten
to a
snug
fit
(approxi-

mately
2-3
ft-lb)
the
nuts retaining
the

toe plates
to the
dash panel
(B in Fig.

8).

11.
If the
aligning spacer cannot
be

rotated freely,
the
dash panel holes

must
be
filed
or
reamed
for
greater

travel
(as
mentioned
in the
second

paragraph
at the
beginning
of
this

procedure).

12.
Tighten
all
nuts
and
bolts

(noted
as C, D and E in
Fig.
8) in the

passenger compartment
to a
snug
fit

(approximately 2-3 ft-lb). Again check

aligning spacer
for
looseness. Perform

these tightening operations
in
alpha-

betical order.

13.
Tighten
the
lateral adjustment

bolt
(F in Fig. 8) to
snug
fit.
Again

check
the
aligning spacer
for
loose-

ness.

14.
Tighten
all
bolts and nuts
to the

proper torque value (listed
in Fig. 8)

in alphabetical order.

15.
Remove
the
steering shaft
al-

igning spacer.

16.
Remove
the 1/8
diameter
rod or

drill previously inserted
in the
flex

coupling.

17.
Reinstall
the
trim
at the
instru-

ment panel
to
steering column mount-

ing.

LINCOLN CONTINENTAL

If
a
condition
of
high shift
or
steer-

ing effort
is
experienced
it may be

caused
by
improper alignment
of the

energy absorbing steering column.
The

following procedures outline
the
steps

necessary
to
correctly realign either

fixed
or
tilt columns:

1.
Disconnect
the
battery.

2.
Loosen four
toe
plate attaching

nuts (Fig.
10).

3.
Loosen
one toe
plate
to
steering

column clamp bolt
and nut.
Check

alignment
of
steering shaft
to
shift
-HANDLE PORTION

2-3/4"
-*- 3/4"

BEND AROUND

STEERING SHAFT
DIMENSION
A:

STANDARD COLUMN 7/16"

TILT WHEEL COLUMN
1-1/8"

•2-3/4

FABRICATE ALIGNING SPACER OUT OF

PLASTIC SHIPPING COLLAR PROVIDED

ON SERVICE DRIVESHAFTS, OR OUT
OF

1/32"—1/16" CARDBOARD
STEERING SHAFT

ALIGNMENT SPACER-BEND AROUND

STEERING SHAFT (DIMENSION
A)
AND

SLIDE UP THE SHAFT INTO COLUMN

G1537-A

FIG. 9—Aligning Spacer Fabrication
and
Insertion

BRAKE PEDAL

SUPPORT BRACKET

PART

A-TOE PLATE

B-CLAMP

C-C0LUMN BRACKET

D-BRAKE PEDAL

SUPPORT BRACKET
TORQUE VALUE

8-12 FT. LB.

3-5 FT. LB.

10-15
FT.
LB.

8-12 FT. LB.

G1541-A

FIG. 10—Steering Column Alignment Locations
and
Torque

Specifications—Lincoln Continentalprocarmanuals.com

04-02-22

Rear Axle — Removable Carrier Type
04-02-22

Too/-T59L-4204-A

or
44211

and
44211-A

EH92-C

FIG. 56—Checking Differential

Torque

High Torque

a. Insufficient lubricant on the

clutch plates.

b.
A clutch plate wedged in be-

tween the case halves.

c. An improperly centered Belleville

spring.

Low Torque

a. Weak Belleville spring.
b.
Improper amount of clutch

plates installed.

Under no circumstances should the

Belleville spring be ground down to

reduce torque. The torque required to

keep the side gear turning with new

clutch plates is 155 to 195 ft-lbs. On

reused clutch plates, the torque re-

quired is 75 ft-lbs minimun.

7.
If the differential bearings have

been removed, press them on as

shown in Figs. 49 and 50.

8. Install the side bearings on the

differential case, and install the case

in the carrier as described in steps 7

through 16 under Assembly and In-

stallation of Conventional Differential

Case. Adjust and check backlash be-

tween the ring gear and pinion as di-

rected under Differential Bearing Pre-

load Adjustments.

ASSEMBLY OF

TRACTION-LOK

DIFFERENTIAL CASE

1.
Lubricate all parts with Ford

Hypoid Lubricant (Ford Part No.

C6AZ-19580-C), during assembly of

differential.

2.
Mount the differential case in a

soft jawed vise and place a side gear

thrust washer and side gear in the

counterbore of the case.

CENTER BLOCK

PRELOAD SPRINGS

PRELOAD PLATE

PINION GEAR

DIFFERENTIAL CASE

E1893-
A

. 57—Center Block and Pre-Load Springs Installation
3.
Install the pinion thrust washers

and place the pinion gears on the side

gear; aligning the holes in the washers

and gears with the holes in the case.

4.
Install the center block so that

the shaft holes are aligned with the

holes in the pinion gears and case.

The center block has two machined

sides and two rough sides.

5.
With a brass drift, drive in the

long pinion shaft from the outside of

the case aligning the lock pin holes in

the shaft with the holes in the case.

The center block should be positioned

so the long shaft is driven through the

rough side and short shafts driven

through the machined side (Fig. 57).

6. With a suitable drift, install the

shaft lock pins. Make sure the pinion

and side gears move freely.

7.
Place the four pre-load springs in

the holes provided in the center block.

8. Position a pre-load plate over the

four springs, making sure the springs

are properly seated. The pre-load

plate straddles the center block over

its narrower or machined width.

9. Mount the differential cover in a

soft jawed vise or holding fixture.

10.
Insert shim(s) of 0.050 total

thickness in the cover cavity.

11.
Install the composite plate (fric-

tion material on one side and steel on

the opposite) on the back side of the

clutch hub with the friction material

against the hub; next, install a friction

plate, then steel, friction, stee, fric-

tion, steel, friction, and lastily a steel

plate (Figures 3 and 58). When new

clutch plates are used, soak the plates

in Ford Hypoid Lubricant (Ford Part

No.
C6AZ-19580-C), or equivalent lu-

bricant, for approximately 30 minutes

before installation.

12.
Place the clutch hub with the

clutch plates into the clutch ear cavi-

ties in the differential cover. Make

sure that the splines on the last fric-

ion plate are engaged on the hub.

13.
Obtain locally a 5/8 inch x

2 1/2 inch or 9/16 inch x 2 1/2

inch bolt, nut and two I 1/2 inch

outside diameter flat washers approx.

1/8 inch in thickness. These parts are

required to compress the clutch pack

in order to obtain the proper shim

selection.

Install a flat washer on the bolt,

and place the bolt through the clutch

hub.
Hold the bolt in position and

turn the cover over. Place a flat wash-

er on the bolt and then install the nut.

Be sure the washers are centered, and

torque the nut 10 to 15 ft-lbs (Fig.

59).

14.
Place the shim template tool

(Ford Tool No. T68P-4946-A) in the

clutch hub. Some clearance should beprocarmanuals.com