1969 FORD MUSTANG light

03-12-05
Wheels
And
Tires

03-12-05

and sharp edges from valve hole
in

rim.

8. Mount first tire bead exercising

care
not to
pinch
air
container.

9. Start valve through hole
in rim.

Do
not
pull valve housing into place

at this time.

10.
Mount
the
second bead starting

just past
the
valve
so the
last portion

of
the
bead goes over
the rim at the

valve.

11.
Rotate
the
tire back
and
forth

to center
the
valve housing.

12.
Pull
the
valve housing into

place. Make certain that
the
rubber

valve ridge
is
visible around
thi
valve

housing
(Fig.
12).

13.
Tighten
the
core housing lightly

using pliers.

14.
Thread
the
Inflate-Chek adapt-

er onto
the
core housing.
15.
Inflate
the
inner chamber
to

seat
the
tire beads exercising care
not

to exceed
45 psi
pressure. Adjust this

inner chamber
air
pressure
to 15 psi

higher than
the
recommended tire

pressure.

F 1387
- A

FIG. 12—Valve Installation
16.
Remove
the
Inflate-Chek

adapter
and
adjust tire (outer cham-

ber) pressure
to the
recommended

pressure.

17.
Recheck inner chamber pres-

sure.

18.
Install valve
cap.

WHEEL
AND
TIRE

INSTALLATION

1.
Clean
all
dirt from
the hub and

drum.

2.
Position
the
wheel
and
tire
on

the
hub and
drum. Install
the
wheel

hub nuts
and
tighten them alternately

to draw
the
wheel evenly against
the

hub
and
drum.

3.
Lower
the
vehicle
to the
floor,

and torque
the hub
nuts
to
specifica-

tion.

MAJOR REPAIR OPERATIONS

HOISTING INSTRUCTIONS

Damage
to
steering linkage compo-

nents
and
front suspension struts
may

occur
if
care
is
not
exercised when
po-

sitioning
the
hoist adapters
of 2
post

hoists prior
to
lifting
the
vehicle.

If
a 2
post hoist
is
used
to
lift
the

vehicle, place
the
adapters under
the

lower arms
or the
No.
1
crossmember.

Do
not
allow
the
adapters
to
contact

the steering linkage.
If the
adapters

are placed under
the
crossmember,
a

piece
of
wood (2x4x16 inches) should

be placed
on the
hoist channel
be-

tween
the
adapters. This will prevent

the adapters from damaging
the
front

suspension struts.

FRONT WHEEL GREASE

SEAL
AND
BEARING

REPLACEMENT AND/OR

REPACKING

If bearing adjustment will
not
elimi-

nate looseness
or
rough
and
noisy
op-

eration,
the hub and
bearings should

be cleaned, inspected,
and
repacked

with specified wheel grease.
If the

bearing cups
or the
cone
and
roller

assemblies
are
worn
or
damaged, they

should
be
replaced.

DRUM BRAKES

1.
Raise
the
vehicle until
the
wheel

and tire clear
the
floor.

2.
Remove
the
wheel cover
or hub
cap.
Remove
the
grease
cap
from
the

hub.
Remove
the
cotter
pin,
nut
lock,

adjusting
nut, and
flat washer from

the spindjej, Remove
the
outer bearing

cone
and
roller assembly
(Fig.
1).

3.
Pull
the
wheel,
hub, and
drum

assembly
off the
wheel spindle.

4.
Remove
and
discard
the
grease

retainer. Remove
the
inner bearing

Too/-T69L-J102-A

F1476-A

FIG. 13—Removing Front Wheel

Bearing Cup—Except Lincoln

Continental
cone
and
roller assembly from
the hub

with Tool 1175AE.

5.
Clean
the
lubricant
off the
inner

and outer bearing cups with solvent

and inspect
the
cups
for
scratches,

pits,
excessive wear,
and
other
dam-

age.
If
the
cups
are
worn
or
damaged,

remove them with Tool T69L-1102-A

(Fig.
13).

6. Thoroughly clean
the
inner
and

outer bearing cone
and
roller assem-

blies with solvent
and dry
them thor-

oughly.
Do not
spin
the
bearings with

compressed
air.

Inspect
the
cone
and
roller assem-

blies
for
wear
or
damage,
and
replace

them
if
necessary.
The
cone
and
roller

assemblies
and the
bearing cups

should
be
replaced
as a
unit
if
damage

to either
is
encountered.

7. Thoroughly clean
the
spindle
and

the inside
of the hub
with solvent
to

remove
all old
lubricant.

Cover
the
spindle with
a
clean

cloth,
and
brush
all
loose dust
and

dirt from
the
brake assembly.
To
pre-

vent getting dirt
on the
spindle, care-

fully remove
the
cloth from
the

spindle.

8.
If the
inner and/or outer bearing

cup(s) were removed, install
the re-

placement cup(s)
in the hub
with
the

tool shown
in Fig.
14.
Be
sure
to
seat

the cups properly
in the hub.

9. Pack
the
inside
of the hub
with

specified wheel bearing grease.
Add

lubricant
to the hub
only until
the

grease
is
flush with
the
inside diame-

ter
of
both bearing cups
(Fig.
15).procarmanuals.com

03-12-06

Wheels And Tires

03-12-06

Tool-T56P-1217-A

INNER CUP

INSTALLATION
OUTER CUP

INSTALLATION

F1464-A

FIG. ^.Installing Front Wheel

Drum Bearing Cups

LUBR

F1427. A

FIG. 75—Front Wheel Hub

Lubrication

10.
All old grease should be com-

pletely cleaned from the bearings and

surrounding surfaces before repacking

them with new grease (C1AZ-

19590-B). The new lithium base grease

is not compatible with sodium base

grease which may have been present

on the bearing surfaces. Pack the

bearing cone and roller assemblies

with wheel bearing grease. A bearing

packer is desirable for this operation.

If a packer is not available, work as

much lubricant as possible between

the rollers and cages. Lubricate the

cone surfaces with grease.

11.
Place the inner bearing cone

and roller assembly in the inner cup,

Apply a light film of grease to the

lip(s) of the grease retainer and install

the new grease retainer with the rev-

erse end of the tool shown in Fig. 6.
Be sure that the retainer is properly

seated.

12.
Adjust the brake shoes as out-

lined in Group 2.

13.
Install the wheel, hub, and

drum assembly on the wheel spindle.

Keep the hub centered on the spindle

to prevent damage to the grease re-

tainer or the spindle threads.

14.
Install the outer bearing cone

and roller assembly and the flat wash-

er on the spindle, then install the ad-

justing nut (Fig. 1).

15.
Adjust the wheel bearings as

outlined in Section 2, and install a

new cotter pin. Bend the ends of the

cotter pin around the castellations of

the nut lock to prevent interference

with the radio static collector in the

grease cap. Install the grease cap.

16.
Install the hub cap or wheel

cover.

DISC BRAKES

1.
Raise the vehicle until the wheel

and tire clear the floor.

2.
Remove the wheel cover or hub

cap from the wheel.

3.
Remove the wheel and tire from

the hub and rotor.

4.
Remove 2 bolts and washers that

attach the caliper to the spindle. Re-

move the caliper from the rotor and

wire it to the underbody to prevent

damage to the brake hose.

5.
Remove the grease cap from the

hub.
Remove the cotter pin, nut lock,

adjusting nut, and flat washer from

the spindle. Remove the outer bearing

cone and roller assembly (Fig. 2).

6. Pull the hub and rotor assembly

off the wheel spindle.

7.
Remove and discard the old

grease retainer and the inner bearing

cone and roller assembly from the

hub.
8. Clean the lubricant off the inner

and outer bearing cups with solvent

and inspect the cups for scratches,

pits,
excessive wear, and other dam-

age.
If the cups are worn or damaged,

remove them with Tool T69L-1102-A

(Fig. 13).

On Lincoln Continental models, re-

move worn or damaged cups with the

tools shown in Fig. 16.

9. Thoroughly clean the inner and

outer bearing cones and rollers with

computer solvent, and dry them

thoroughly. Do not spin the bearings

dry with compressed air.

Inspect the cones and rollers for

wear or damage, and replace them if

necessary. The cone and roller assem-

blies and the bearing cups should be

replaced as a set if damage to either is

encountered.

10.
Thoroughly clean the spindle

and the inside of the hub with solvent

to remove all old lubricant.

Cover the spindle with a clean

cloth, and brush all loose dust and

dirt from the dust shield. To prevent

getting dirt on the spindle carefully re-

move the cloth from the spindle.

11.
If the inner and/or outer bear-

ing cup(s) were removed, install the

replacement cup(s) in the hub with the

tools shown in Fig. 17. Be sure to seat

the cups properly in the hub.

12.
Pack the inside of the hub with

the specified wheel bearing grease.

Add lubricant to the hub only until

the grease is flush with the inside di-

ameter of both bearing cups.

It is important that all old grease

be removed from the wheel bearings

and surrounding surfaces because the

new Lithium base grease C1AZ-

19590-B is not compatible with Sodi-

um base grease which may already be

present on the bearing surfaces.

F 1502-A

FIG. 16—Removing Front Wheel Bearing Cup—Lincoln Continentalprocarmanuals.com

03-12-07
Wheels And Tires

03-12-07

Tool - 7277- K

F 1263-A

FIG. 17—Installing Front Wheel Bearing Cup

13.
Pack the bearing cone and roll-

er assemblies with wheel bearing

grease. A bearing packer is desirable

for this operation. If a packer is not

available, work as much lubricant as

possible between the rollers and cages.

Lubricate the cone surfaces with

grease.

14.
Place the inner bearing cone

and roller assembly in the inner cup.

Apply a light film of grease to the lips

of the grease retainer and install the

new grease retainer with the tool

shown in Fig. 18. Be sure the retainer

is properly seated.

15.
Install the hub and rotor as-

sembly on the wheel spindle. Keep the

hub centered on the spindle to prevent

damage to the grease retainer or the

spindle threads.

16.
Install the outer bearing cone

and roller assembly and the flat wash-

er on the spindle, then install the ad-

justing nut.

17.
Adjust the wheel bearings as

outlined in Section 2, and install a

new cotter pin. Bend the ends of the

cotter pin around the castellations of

the nut lock to prevent interference

with the radio static collector in the

grease cap. Install the grease cap.

18.
Install the caliper to the spindle

and torque the attaching bolts to spe-

cifications as detailed in Group 2.

19.
Install the wheel and tire on the

hub.

20.
Install the hub cap or wheel

cover.

21.
Before driving the vehicle,

pump the brake pedal several times to

obtain normal brake lining to rotor

clearance and restore normal brake

pedal travel.
FRONT HUB AND DRUM

ASSEMBLY REPLACEMENT

When the hub and drum assembly

is replaced, new bearings and a grease

retainer must be installed in the new

assembly. The new grease retainer

should be soaked in light engine oil at

least 30 minutes before installation.

1.
Raise the vehicle until the wheel

and tire clears the floor. Pry off the

hub cap or wheel cover, and remove

the wheel and tire from the hub and

drum assembly.

2.
Remove the grease cap from the

hub.
Remove the cotter pin, nut lock

adjusting nut, and flat washer from

the spindle. Remove the outer bearing

cone and roller assembly (Fig. 1).

3.
Pull the hub and drum assembly

off the wheel spindle.

4.
Remuve the grease retainer and

the inner bearing cone and roller as-

sembly from the hub with Tool

1175AE.

5.
Remove the protective coating

from the new hub and drum with car-

buretor degreaser.

6. Pack the inside of the hub with

specified wheel bearing grease. Add

lubricant to the hub only until the

grease is flush with the inside diame-

ter of both bearing cups (Fig. 15).

7.
All old grease should be com-

pletely cleaned from the bearings be-

fore repacking them with new grease.

Pack the bearing cone and roller

assemblies with wheel bearing grease.

A bearing packer is desirable for this

operation. If a packer is not available,

work as much lubricant as possible

between the rollers and cages. Lubri-

cate the cone surfaces with grease.
8. Place the inner bearing cone and

roller assembly in the inner cup, and

install the new grease retainer with the

reverse end of the tool shown in Fig.

6. Be sure that the retainer is properly

seated.

9. Adjust the brake shoes as out-

lined in Group 2.

10.
Install the new hub and drum

assembly on the wheel spindle. Keep

the hub centered on the spindle to pre-

vent damage to the grease retainer.

11.
Install the outer bearing cone

and roller assembly and the flat wash-

er on the spindle; then, install the ad-

justing nut (Fig. 1).

12.
Position the wheel and tire on

the new hub and drum assembly. In-

stall the wheel hub nuts and tighten

them alternately in order to draw the

wheel evenly against the hub and

drum.

13.
Adjust the wheel bearings as

outlined in Section 2, and install a

new cotter pin. Bend the ends of the

cotter pin around the castellations of

the nut lock to prevent interference

with the radio static collector in the

grease cap. Install the grease cap.

14.
Install the hub cap or wheel

cover.

FRONT HUB AND ROTOR

ASSEMBLY REPLACEMENT

When the hub and rotor assembly is

replaced, new bearings and a grease

retainer must be installed in the new

assembly.

1.
Raise the vehicle until the wheel

and tire clear the floor. Pry off the

hub cap or wheel cover, and remove

the wheel and tire from the hub and

rotor assembly.

2.
Remove 2 bolts and washers that

attach the caliper to the spindle. Re-

move the caliper from the rotor and

wire it to the underbody to prevent

damage to the brake hose.

3.
Remove the grease cap from the

hub.
Remove the cotter pin, nut lock,

adjusting nut, and flat washer from

the spindle; then, remove the outer

bearing cone and roller assembly,

(Fig. 2).

4.
Pull the hub and rotor off the

spindle.

5.
Remove the protective coating

from the new hub and rotor with car-

buretor degreaser.

6. Grease and install the inner

bearing cone and roller assembly in

the inner bearing cup. Apply a light

film of grease on the grease retainerprocarmanuals.com

04-01-01
General Axle Service

04-01-01

GROUP

4

PART
4-1
PAGE

General Axle Service 04-01-01

PART 4-2

Rear Axle
—
Removable Carrier Type ... 04-02-01

PART
4-3

Rear Axle
—
Integral CarrierType

(Except Ford Light Duty WER) 04-03-01
PART 4-4

Rear Axle
—
Ford

Light-Duty (WER)

PART
4-5

Soecifications
PAGE

04-04-01

04-05-01

PART
4-1
General Axle Service

COMPONENT INDEX

ADJUSTING DIFFERENTIAL BEARING

PRELOAD AND BACKLASH

Locating Pinion-Integral Carrier

Locating Pinion-Removable Carrier

ADJUSTING PINION AND RING GEAR

TOOTH CONTACT

Integral Carrier

Removable Carrier

BEARING CONE AND ROLLER

ASSEMBLIES

Cleaning
and
Inspection

BEARING CUPS

Cleaning
and
Inspection

CARRIER HOUSING

Cleaning
and
Inspection

CHECKING GEAR TOOTH PATTERNS

CHECKING LIMITED SLIP
OR
TRACTION

LOK DIFFERENTIAL OPERATION

CHECKING REAR AXLE COMPANIOM

FLANGE RUNOUT

DIFFERENTIAL BEARING ADJUSTING

NUTS

Cleaning
and
Inspection

DIFFERENTIAL CASE

Cleaning
and
Inspection

GEARS (ALL)

Cleaning
and
Inspection

IDENTIFICATION

INSPECTION BEFORE DISASSEMBLY
OF

CARRIER

LIMITED SLIP AND TRACTION-LOK

DIFFERENTIAL PARTS

Cleaning
and
Inspection
MODEL APPLICATION
All
Models

01-07

01-08

01-07

01-07

01-10

01-10

01-10

01-10

01-09

01-09

01-03

01-02

01-10

01-10

01-10

01-10

01-09

01-09

01-02

01-09

01-10

01-10
Ford
01-08

01-07

01-05
Mercury
N/A

N/A

01-05
Meteor
01-08

01-07

01-05
Cougar
01-08

01-07

01-05
Fairlane
01-08

01-07

01-05
Falcon
01-08

01-07

01-05
Montego
01-08

01-07

01-05
Mustang
01-08

01-07

01-05
Lincoln-
Continental
N/A

N/A

01-05
Thunderbird
N/A

N/A

01-06
Continental-
Mark
III
N/A

N/A

01-06

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.
procarmanuals.com

04-01-05

General Axle Service

04-01-05

Integral Carrier Type Axle

1.
Thinner shim with
the
backlash

set
to
specifications moves
the
pinion

farther from
the
ring gear.

2.
Thicker shim with
the
backlash

set
to
specifications moves
the
pinion

closer
to the
ring gear.

If
the
patterns
are not
correct,

make
the
changes
as
indicated.
The

differential case
and
drive pinion will

have
to be
removed from
the
carrier

casting
to
change
a
shim. When
re-

installing
the
pinion
and
ring gear
of a

non-hunting
or
partial non-hunting

gear
set, be
sure that
the
marked

tooth
on the
pinion indexes between

the marked teeth
on the
ring gear

(Fig.
51,
Part
4-2).
Refer
to
Pinion

and Ring Gear Tooth Contact Adjust-

ment, Section
2.

REAR AXLE COMPANION

FLANGE RUNOUT CHECK

ALL AXLES EXCEPT

THUNDERBIRD
AND

CONTINENTAL MARK
III

1.
Raise
the
vehicle
on a
hoist that

supports
the
rear axle (twin-post

hoist).

2.
Remove
the
driveshaft assembly

(Group
5).

3.
Check
the
companion flange

damage
to the
universal joint bearing

locating lugs.
If the
universal joint

bearing locating lugs
on the
compan-

ion flange
are
shaved (worn)
or dam-

aged, replace
the
companion flange

(Fig.
5).

PROPERLY SEATED
CUP SHAVES LUG

E 1621-A

FIG. 5—Checking Companion

Flange

4.
The
rear axle companion flange

runout
is
checked with
a
modified uni-

versal joint (checking tool)
a
dial indi-

cator with
1.000
inch minimum travel,
and
a
cup-shaped dial indicator adapt-

er tool
(Fig. 6). To
fabricate
the

checking tool, modify
a
universal joint

assembly
by
removing
two
bearing

cups that are opposite each other, and

cuttting
or
grinding
off
one
of
the uni-

versal joint bearing flanges (Fig. 6).

5.
Install
the
cup-shaped adapter
on

the dial indicator stem. Install
the
dial

indicator
on the
pinion retainer
or pi-

nion nose bumper bracket. Position

the indicator
to
allow
an
indication
at

the ends
of the
universal joint bearing

cups
and the
remaining exposed jour-

nal
of the
cross-shaft.

6. Turn
the
companion flange
so

that
the
dial indicator cup-type adapt-

er rests
on the
machined surface
of

the bearing
cup (Fig. 6).
Rotate
the

companion flange side-to-side slightly

to obtain
a
reading indicating that
the

bearing
cup
surface
is
perpendicular
to

the indicator cup-type adapter. This

will
be the
point
at
which
the
dial
in-

dicator
cup is
closest
to the
center
of

companion flange rotation.
It is
also

the point
at
which
the
dial indicator

hand will reverse direction
as
the com-

panion flange
is
turning.
Set the
dial

indicator
to
zero.

oo/-6565,
Used

'With Bracket From

Too!-4201-C

MOUNT HERE

Tool-4201-C

E
1622-
A

FIG. 6—Flange Bearing
Cup

Run-out Check—Typical
7.
Carefully retract
the
dial indica-

tor stem
and
rotate
the
companion

flange 180 degrees
to
position
the ma-

chined surface
of the
opposite univer-

sal bearing under
the
dial indicator

adapter tool. Again, slightly rotate
the

flange side-to-side
to
position
the

bearing perpendicular
to the
dial indi-

cator adapter. Again, this
is the
point

at which
the
indicator hand will
rev-

erse direction
as the
flange
is
rotated.

Record
the
flange bearing
cup
runout

reading obtained from
the
indicator

(Fig.
7).

Rotate
the
companion flange
90

degrees
and
position
the
dial indicator

adapter
on the
machined
end of the

exposed journal
(Fig. 8). Be
sure
the

end surface
of the
exposed journal
is

perpendicular
to the
indicator
cup-

type adapter. This requires that
the

cross-shaft
be
moved fore
and aft on

the flange bearing cups. Note
the

point
at
which
the
indicator hand rev-

erses direction. Rotate
the
flange
as-

sembly side-to-side until
the
cross-

shaft
is
perpendicular
to the
pinion

shaft axis,
and the
indicator hand
re-

verses direction. Zero the dial indicator

and check the zero point again by

Tool-6565, Used

With Bracket
Fro

Tool-4201 -C
MOUNT HERE —

Too/-4207-C

E 1624-A

FIG. 8—Cross Shaft Runout

Check—Typical

INDICATOR

READING

1

2

3

Average
FLANGE

BEARING CUP

RUNOUT—INCH

0.C04

0.002

0.003

0.003
DRIVESHAFT UNIVERSAL

CROSS-SHAFT

RUNOUT—INCH

0.005

0.004

0.003

0.004

FIG. 7—Flange Bearing
Cup and
Cross Shaft Runout Averaging

Chart—Typical Readingsprocarmanuals.com

04-01-06
General Axle Service

04-01-06

FLANGE BEARING

CUP RUNOUT

0.000

0.001

0.002

0.003

0.004

0.005

0.006

0.007

0.008
DRIVE SHAFT UNIVERSAL CROSS-SHAFT RUNOUT-INCH

0.000

0.000

0.001

0.002

0.003

0.004

0.005

0.006

0.007

0.008
0.001

0.001

0.0013

0.0022

0.0032

0.0042

0.0051

0.0061

0.0071

0.0081
0.002

0.002

0.0022

0.0027

0.0036

0.0045

0.0053

0.0062

0.0073

0.0082
0.003

0.003

0.0032

0.0037

0.0042

0.005

0.0058

0.0068

0.0075

0.0087
0.004

0.004

0.0042

0.0045

0.005

0.0057

0.0063

0.0072

0.0081

0.009
0.005

0.005

0.0051

0.0053

0.0058

0.0064

0.0071

0.0078

0.0087

0.0094
0.006

0.006

0.0061

0.0062

0.0067

0.0072

0.0078

0.0085

0.0093

0.010
0.007

0.007

0.0071

0.0072

0.0077

0.0081

0.0087

0.0092

0.0099

0.0104
0.008

0.008

0.0081

0.0082

0.0085

0.009

0.0094

0.010

0.0103

0.011

The total (combined) companion flange runout
is
located
in the
square where
the
columns containing
the
flange bearing cup runout

and universal cross shaft runout readings intersect.

FIG. 9—Companion Flange Combined Runout Chart

slightly moving the cross-shaft fore

and aft, then rotate the companion

flange from side-to-side.

8. With the indicator at zero, care-

fully retract the dial stem and rotate

the flange 180 degrees. Rotate the

cross-shaft 180 degrees on the flange

bearing cups to position the exposed

journal under the dial indicator adapt-

er. Rock the cross-shaft fore and aft

and the companion flange side-to-side

to establish the point at which the in-

dicator hand reverses direction. This

will determine the driveshaft universal

cross-shaft run-out. Record this read-

ing (Fig. 8).

9. Repeat steps 5 through 8 at least

three times and average the indicator

readings obtained (Fig. 7).

10.
To determine the total (com-

bined) companion flange runout, it

will be necessary to use the combined

runout chart (Fig. 9). Position a

straight edge at the amount of flange

bearing cup runout indicated on the

left hand column of the chart. Posi-

tion another straight edge vertically at

the amount of driveshaft universal

cross-shaft runout indicated on the top

of the chart. The point at which the

straight edges cross the chart indicates

the combined rear axle flange runout.

For example:

With an indicated 0.003 inch flange

bearing cup runout and an indicated

0.004 inch universal cross-shaft runout

(Fig. 9), the combined companion

flange runout will be 0.005 inch as in-

dicated in the square on the chart

(Fig. 9).

11.
If the reading obtained in Step

10 exceeds specifications, reposition

the companion flange 180 degrees on

the pinion shaft and repeat steps 1

through 10.

12.
If the repeat readings still ex-

ceed specifications, re-position the

flange an additional 90 degrees on the
pinion shaft and check the runout

(Steps 4 through 10).

13.
If the runout is still excessive,

replace the companion flange and

check the runout. If necessary, rotate

the new flange on the pinion shaft

until an acceptable runout is obtained.

If excessive runout is still evident

after replacement of the companion

flange, it will be necessary to replace

the ring and pinion gear, and repeat

the above checks until runout is within

specifications.

14.
Install the driveshaft assembly

(Group 5). Make sure the universal

joint bearing cups are properly posi-

tioned between the companion flange

lugs.

15.
Lower the vehicle. Road test

the vehicle. If drive shaft vibrations

are evident during the road test, re-

move the driveshaft from the compan-

ion flange and rotate it 180 degrees.

Road test the vehicle again.
THUNDERBIRD AND

CONTINENTAL MARK III

1.
Raise the vehicle on a hoist that

supports the rear axle (twin-post

hoist).

2.
Remove the driveshaft assembly

(Group 5).

3.
Check the companion flange for

damage.

4.
To check radial runout, set up

dial indicator as shown in Fig. 10.

5.
Rotate the companion flange

with the dial indicator in place. If the

runout exceeds specifications, remove

the flange and reinstall it 180 degrees

from original position. Follow the

procedure in Part 4-2 for companion

flange installation.

6. If the runout is still excessive, re-

move and reinstall the flange an addi-

tional 90 degrees and recheck runout.

7.
To check lateral (face) runout,

set up the dial indicator as shown in

Fig. 11. Repeat steps 5 and 6.

FLANGE
MOUNT HERE

Too/-4207-C

Too/-6565 USED WITH BRACKET FROM Tool-4201

FIG. 10—Checking Companion Flange Radial Runout—

Thunderbird and Continental Mark III
E1697-Aprocarmanuals.com

04-01-07
General Axle Service

04-01-07

Tool-4201-
C

Tool-6565 USED WITH BRACKET

FROM Too/^*207-C

FLANGE

E1743-A
procedure under Backlash and Differ-

ential Bearing Preload Adjustments.

If the tooth pattern indicates a change

in shim thickness, follow the proce-

dure under Pinion Location.

REMOVABLE CARRIER

TYPE AXLE

The shim location for the removable

carrier type axle is between the pinion

retainer and the carrier (Fig. 13).

When adjusting this type carrier re-

ducing shim thickness will move the

pinion toward the ring gear; increas-

ing shim thickness will move the pi-

nion away from the ring gear (Fig.

13).

FIG. 11—Checking Companion Flange Lateral Runout—

Thunderbird and Continental Mark III
INTEGRAL CARRIER

TYPE AXLE

8. If the runout is still excessive, re-

place the companion flange and check

the runout. If necessary, rotate the

new flange on the pinion shaft until an

acceptable runout is obtained.

If excessive runout is still evident

after replacement of the companion

flange, it will be necessary to replace

the ring and pinion gear, and repeat

the above checks until runout is within

specifications.

9. Install the driveshaft assembly

(Group 5).

PINION LOCATION

ADJUSTMENT

BACKLASH

ADJUSTMENT,

LEFT

ADJUSTING

NUT

E1476-A

FIG. 12—Pinion and Ring Gear

Tooth Contact Adjustment
—

Integral Carrier Type Axles
PINION AND RING GEAR

TOOTH CONTACT

ADJUSTMENT

Two separate adjustments affect pin-

ion and ring gear tooth contact.

They are pinion location and backlash

(Figs.
12 and 13).

Individual differences in matching

the differential housing and the gear

set require the use of shims to locate

the pinion for correct contact with the

ring gear.

When adjusting either type axle,

shim thickness should be increased or

reduced only as indicated by the tooth

pattern check described in the fore-

going Section 1.

If the tooth pattern check indicates

a change in backlash only, follow the

PINION

LOCATION

ADJUSTMENT

SHIMS

LEFT

ADJUSTING

NUT
RIGHT

ADJUSTING

BACKLASH NUT

ADJUSTMENT El 409-A

FIG. 13—Pinion and Ring Gear

Tooth Contact Adjustment—

Removable Carrier Axles
The shim location for the integral

carrier type axle, is between the pi-

nion gear and the pinion rear bearing

cone (Fig. 12). When adjusting this

type axle, increasing shim thickness

moves the pinion toward the ring

gear; reducing shim thickness moves

the pinion away from the ring gear

(Fig. 12).

BACKLASH AND DIFFERENTIAL

BEARING PRELOAD

ADJUSTMENTS (ALL AXLES)

On a Light-Duty (WER) Axle, it is

necessary to remove the rear axle

shafts prior to performing the adjust-

ment procedures. Refer to Rear Axle

Shaft Wheel Bearing and Oil Seal Re-

placement—Light-Duty (WER), Axle,

Part 4-4, Section 2.

To secure a more uniform control

of differential side bearing preload in

service repairs, a dial indicator set-up

such as shown in Fig. 12 is used.

In both types of axle (Fig. 11 and

12),
the ring gear is moved away from

or toward the pinion as described in

the following procedure.

1.
Remove the adjusting nut locks,

loosen the differential bearing cap

bolts,
then torque the bolts to 15 ft-lbs

on integral carrier type axle; 20 ft-lbs

on removable carrier type axles before

making adjustments.

2.
The left adjusting nut is on the

ring gear side of the carrier. The right

nut is on the pinion side. Loosen the

right nut until it is away from the cup.

Tighten the left nut until the ring gear

is just forced into the pinion with

0.000 backlash then rotate the pinion

several revolutions to be sure no bind-

ing is evident. (Recheck the right nutprocarmanuals.com

04-01-10
General Axle Service

04-01-10

The pattern taken during disassem-

bly should be helpful in judging if

gears can be re-used. Worn gears can-

not be rebuilt to correct a noisy condi-

tion. Gear scoring is the result of ex-

cessive shock loading or the use of an

incorrect lubricant. Scored gears can-

not be re-used.

Examine the teeth and thrust surfa-

ces of the differential gears. Wear on

the hub of the differential gear can

cause a chucking noise known as

chuckle when the vehicle is driven at

low speeds. Wear of splines, thrust

surfaces, or thrust washers, can con-

tribute to excessive drive line back-

lash.

BEARING CUPS AND

CONE AND ROLLER

ASSEMBLIES

Check bearing cups for rings,

scores, galling, or excessively worn

wear patterns. Pinion cups must be

solidly seated. Check by attempting to

insert a 0.0015-inch feeler between

these cups and the bottoms of their

bores.

When operated in the cups, cone

and roller assemblies must turn with-

out roughness. Examine the roller

ends for wear. Step-wear on the roller

ends indicates the bearings were not

preloaded properly, or the rollers were

slightly misaligned.

If inspection reveals either a defec-

tive cup or a defective cone and roller

assembly, both parts should be re-

placed to avoid early failure.

DIFFERENTIAL BEARING

ADJUSTING NUTS

Temporarily install the bearing caps

and test the fit of the adjusting nuts in

their threads. The nuts should turn

easily when the caps are tightened to

25 ft-lbs. The faces of the nuts that

contact the bearing cups must be

smooth and square. Replace the nuts

or examine the threads in the carrier
if their fit is not proper. Be sure that

the bearing caps and adjusting nuts

are on the side they were machined to

fit. Observe the punch marks and

scribe marks made during disassem-

bly.

U-JOINT FLANGE

Be sure that the eai» of the flange

have not been damaged in removing

the drive shaft or in removing the

flange from the axle. The end of the

flange that contacts the front pinion

bearing inner race as well as the flat

surface of the pinion nut counterbore

must be smooth. Polish these surfaces

if necessary. Roughness aggravates

backlash noises and causes wear of

the flange and pinion nut with a resul-

tant loss in pinion bearing preload.

PINION RETAINER

Be sure that the pinion bearing cups

are seated. Remove any chips or burrs

from the mounting flange. Clean the

groove for the O-ring seal and all lu-

bricant passages. If the cups were re-

moved, examine the bores carefully.

Any nicks or burrs in these bores

must be removed to permit proper

seating of the cups.

CARRIER HOUSING

Make sure that the differential

bearing bores are smooth and the

threads are not damaged. Remove any

nicks or burrs from the mounting sur-

faces of the carrier housing.

DIFFERENTIAL CASE

Make sure that the hubs where the

bearings mount are smooth. Carefully

examine the differential case bearing

shoulders, which may have been dam-

aged when the bearings were removed.

The bearing assemblies will fail if they

do not seat firmly against the shoul-

ders.
Check the fit (free rotation) of
the differential side gears in their

counterbores. Be sure that the mating

surfaces of the two parts of the case

are smooth and free from nicks or

burrs.

LIMITED SLIP AND

TRACTION-LOK

DIFFERENTIAL PARTS

Inspect the clutch plates for uneven

or extreme wear. The dog-eared clutch

plates must be free from burrs, nicks

or scratches which could cause excess-

ive or erratic wear to the bonding ma-

terial of the internally splined clutch

plates.
The internally splined clutch

plates should be inspected for condi-

tion of the bond, bonding material,

and wear. Replace the bonded plates

if their thickness is less than 0.085

inch or if the bonded material is

scored or badly worn. Inspect the

bonded plate internal teeth for wear.

Replace them, if excessive wear is evi-

dent. Bonded plates should be re-

placed as a set only

Examine all thrust surfaces and

hubs for wear. Abnormal wear on

these surfaces can contribute to a

noisy axle.

Inspect the Belleville spring (limited

slip) for proper free height of 1/4

inch.

LUBRICANT LEVEL

The lubricant level should be

checked every 6000 miles with the ve-

hicle in normal curb attitude. The lu-

bricant level should be at the lower

edge of the filler plug hole located in

either the carrier casting or housing

cover. It is unnecessary to periodically

drain the axle lubricant. The factory

fill should remain in the housing for

the life of the vehicle, except when re-

pairs are made. The specified lubri-

cant should be installed when the axle

is overhauled.procarmanuals.com