check oil FORD MUSTANG 1969 Volume One Chassis

04-02-19
Rear Axle — Removable Carrier Type
04-02-19

POINTER RESTING ON

PINION NUT

E 1505-B

FIG.
44
— End Play Indicator

Installation

pinion shaft as shown in Figs. 37 and

38.

2.
Slide the correct spacer over the

pinion shaft against the rear bearing.

3.
Position the bearing retainer and

cup assembly on the pinion shaft and

install the front bearing cone and rol-

ler. Press the front cone and roller

into position, as shown in Fig. 46.

4.
Lubricate a new O-ring with axle

lubricant and install it in the groove

provided in the pinion retainer. Be

careful not to twist the O-ring. Install

it by snapping it into place.

5.
Place the proper shim on the

carrier housing and install the pinion

and retainer assembly, being careful

not to pinch the O-ring (Fig. 41).

6. Install the pinion retainer bolts.

Torque the bolts to specification.

7.
Place the slinger over the pinion

shaft and against the front bearing.
Tool - 4858-
E

E 1197-D

FIG. 46—Installing
U-Joint
Flange

8. Install a seal in the bearing re-

tainer, (Fig. 47).

9. Start a new integral nut and

washer on the pinion shaft.

10.
Hold the companion flange with

the tool shown in Fig. 20 or 22 and

torque the pinion nut to specifications

(200 ft-lbs).

11.
With a new seal installed pin-

ion bearing preload should now read

17 to 32 in-lbs for new pinion bearings

and new seal, or 8 to 14 in-lbs for ori-

ginal bearings and a new seal.

ASSEMBLY AND

INSTALLATION OF

DIFFERENTIAL CASE

Conventional

Differential Case

1.
Place a side gear and thrust

washer in the differential case bore

E 1506-B

E 1629-A

FIG. 45— Checking Pinion End

Play
FIG. 47—Installing Oil Seal
(Fig. 48). Lubricate all differential

parts liberally with axle lubricant dur-

ing assembly.

2.
With a soft-faced hammer, drive

the differential pinion shaft into the

case only far enough to retain a pin-

ion thrust washer and pinion gear.

3.
Place the second pinion and

thrust washer in position, and drive

the pinion shaft into place. Carefully

line up the pinion shaft lock pin holes.

4.
Place the second side gear and

thrust washer in position (Fig. 48),

and install the cover on the differen-

tial case. Install the pinion shaft lock

pin. A pinion or axle shaft spline can

be inserted in the side gear spline to

check for free rotation of the differen-

tial gears.

5.
Insert two 7/16 (N.F.) bolts two

inches long through the differential

case flange, and thread them three or

four turns into the ring gear as a

guide in aligning the ring gear bolt

holes.
Press or tap the ring gear into

position.

6. Install and tighten the ring gear

bolts and washers evenly, and torque

them alternately across the gear to

specification.

7.
If the differential bearings have

been removed, press them on as

shown in Figs. 49 and 50.

8. Wipe a thin coating of lubricant

on the bearing bores so that the dif-

ferential bearing cups will move easily.

9. Place the cups on the bearings.

If the gear set is of the non-hunting or

partial non-hunting type, assemble the

differential case and ring gear assem-

bly in the carrier so that the marked

tooth on the pinion indexes between

the marked teeth on the ring gear as

shown in Fig. 51.

In almost every case of improper

assembly (gears assembled out of

time),
the noise level and probability

of failure will be higher than they

would be with properly assembled

gears.

When installing the hunting type

gear set (no timing marks), assemble

the differential case and ring gear as-

sembly in the carrier without regard

to the matching of any particular gear

teeth.

10.
Slide the assembly along the

bores until a slight amount of back-

lash is felt between the gear teeth.

11.
Set the adjusting nuts in the

bores so that they just contact the

bearing cups. The nuts should be en-

gaged about the same number of

threads on each side.

12.
Carefully position the bearing

caps on the carrier. Match the marks

made when the caps were removed.procarmanuals.com

04-03-04
Rear Axles — Integral Carrier Type

04-03-04

1.
Remove the wheel cover, wheel

and tire from the brake drum.

2.
Remove the Tinnerman nuts that

secure the brake drum to the axle

housing flange, and then remove the

drum from the flange.

3.
Working through the hole pro-

vided in each axle shaft flange, re-

move the nuts that secure the wheel

bearing retainer plate. Then pull the

axle shaft assembly out of the axle

housing (Fig. 2). The brake backing

plate must, not be dislodged. Install

one nut to hold the plate in place after

the axle shaft is removed.

4.
If the rear wheel bearing is to be

replaced, loosen the inner retainer

ring by nicking it deeply with a cold

chisel in several places (Fig. 3). It will

then slide off easily.

5.
Remove the bearing from the

axle shaft with the tool shown in Fig.

4 or 5. If the push-puller operation

shown in Fig. 5 is used, be sure that

the puller arms contact the flat sur-

face of the axle shaft flange rather

than the bolt heads. Also with this

method, be careful not to damage or

burr the oil seal journal as the bearing

breaks loose.

6. Whenever a rear axle shaft is re-

placed the oil seal must be replaced.

Remove the seal with the tools shown

in Fig. 8. Soak new oil seals in SAE

10 oil for 1/2 hour before installing.

7.
Inspect the machined surfaces of

the axle shaft and the axle housing for

rough spots or other irregularities

which would affect the sealing action

of the oil seal. Check the axle shaft

splines for burrs, wear or damage.

Carefully remove any burrs or rough

spots.
Replace worn or damaged

parts.

8. Lightly coat wheel bearing bores

with axle lubricant.

9. Place the retainer plate on the

axle shaft, and press the new wheel

bearing on the shaft with the tool

shown in Fig. 4 or 5. The bearing

should seat firmly against the shaft

shoulder. Do not attempt to press on

both the bearing and the inner retain-

er ring at the same time.

10.
Using the bearing installation

tool, press the bearing inner retainer

ring on the shaft until the retainer

seats firmly against the bearing.

11.
Wipe all lubricant from the in-

side of the axle housing in the area of

the oil seal before installing the new

seal.

12.
Wipe a small amount of oil res-

istant sealer on the outer edge of the

seal before it is installed. Do not put

sealer on the sealing lip.

13.
Rear wheel oil seals with syn-
thetic sealing elements have been in-

corporated in production. However,

only leather seals will be used as re-

placements for the synthetic sealing

element seals. Install the new oil seal

with the tools shown in Fig. 8. Instal-

lation without use of the proper tool

will distort the seal and cause leakage.

Be sure the new seal has been soaked

in SAE 10 oil for 1/2 hour.

14.
Carefully slide the axle shaft

into the housing so that the rough

forging of the shaft will not damage

the oil seal. Start the axle splines into

the side gear, and push the shaft in

until the bearing bottoms in the housing.

15.
Install the bearing retainer plate

on the mounting bolts at the axle

housing, and install the attaching nuts.

Torque the nuts to specifications.

16.
Install the brake drum and the

drum retaining nuts.

17.
Install the wheel and tire on the

drum, and install the wheel cover.

REMOVAL AND REPLACEMENT

OF DRIVE PINION OIL SEAL

Synthetic seals must not be cleaned,

soaked or washed in cleaning solvent.

Replacement of the pinion oil seal

involves removal and installation of

only the pinion shaft nut and the uni-

versal joint flange. However, this op-

eration disturbs the pinion bearing
preload, and this preload must be

carefully reset when assembling.

1.
Raise the vehicle and install safe-

ty stands. Remove the rear wheels and

brake drums.

2.
Make scribe marks on the drive

shaft end yoke and the axle U-joint

flange to insure proper position of the

drive shaft at assembly (Fig. 14). Dis-

connect the drive shaft from the axle

U-joint flange. Be careful to avoid

dropping the loose universal joint

bearing cups. Hold the cups on the

spider with tape. Mark the cups so

that they will be in their original posi-

tion in relation to the flange when

they are assembled. Remove the drive

shaft from the transmission extension

housing. Install an oil seal replacer

tool in the transmission extension

housing to prevent transmission leak-

age.
Refer to the transmission group

for the appropriate tool.

3.
Install an in-lb torque wrench on

the pinion nut Fig. 6. Record the tor-

que required to maintain rotation of

the pinion shaft through several revo-

lutions. \

4.
While holding the flange with the

tool shown in Fig. 9, remove the inte-

gral pinion nut and washer.

5.
Clean the pinion bearing retainer

around the oil seal. Place a drain pan

under the seal, or raise the front of

the vehicle higher than the rear.

KJ
E
I582-A
Tool - 1175-AB

and T50T-100-A

^___ or
J
775-
AE

Torque Wrench

^ mm i e
icot
A

E 1681-A

FIG. 6—Checking Pinion FiG 7_Removing
pjnjon
Sea,

Bearing Preload

,Tool-T58L-101-A or U75-AE

Tool-T50T-100-A

REMOVAL
Tool-60K-1177-B

or 1177-BorC

INSTALLATION E1214-D

FIG. 8—Removing and Installing Axle Shaft Sealprocarmanuals.com

04-03-05
Rear Axles — Integral Carrier Type

04-03-05

6. Using the tool shown in Fig. 10,

remove the pinion U-joint flange.

7.
Using the tool shown in Fig. 7,

remove the drive pinion oil seal.

8. Clean the oil seal seat.

9. Pinion oil seals have pre-applied

oil resistant sealer. Install the seal in

the retainer using the tool shown in

Fig. 11.

10.
Check splines on the pinion

shaft to be sure they are free of burrs.

If burrs are evident, remove them by

using a fine crocus cloth, working in a

rotational motion. Wipe the pinion

shaft clean.

11.
Apply a small amount of lubri-

cant to the U-joint splines.

12.
Align the punch mark on the

U-joint flange with the mark on the

end of the pinion shaft, and install the

flange.

13.
Install a new integral nut and

washer on the pinion shaft. (Apply a

small amount of lubricant on the

washer side of the nut.)

14.
Hold the flange with the tool

shown in Fig. 9 while tightening the

nut.

15.
Tighten the pinion shaft nut,

rotating the pinion occasionally to in-

sure proper bearing seating, and take

frequent preload readings (Fig. 6)

until the preload is at the original rec-

orded reading established in step 3.

16.
After original preload has been

reached, tighten the pinion nut slowly,

until an additional preload of 6 to 12

in-lbs has been added.

The preload should not exceed the

amount indicated above, or bearing

failure may result. Under no circum-

stances should the pinion nut be

backed-off to lessen preload. If this is

done, a new pinion bearing spacer

must be installed. In addition, the U-

joint flange must never be hammered

on, or power tools used.

17.
Remove the oil seal replacer

tool from the transmission extension

housing. Install the front end of the
drive shaft on the transmission output

shaft.

18.
Connect the rear end of the

drive shaft to the axle U-joint flange,

aligning the punch marks made on the

drive shaft end yoke and the axle U-

joint flange (Fig. 14).

19.
Check the lubricant level. Make

sure the axle is in running position.

Add whatever amount of specified lu-

bricant is required to reach the lower

edge of the filler plug hole, located in

the carrier casting or the housing

cover.

REMOVAL AND INSTALLATION

OF THE ORIGINAL U-JOINT

FLANGE

Use procedure as outlined under

drive pinion oil seal replacement.

Tool-T53T-4857-A

or
4851 -A

E1223-B

FIG. 10—Typical Drive Pinion

Flange Removal

El 906A
Tool-T55P-4676-A

or 4676-G

E1907A
INSTALLATION OF A NEW

UNIVERSAL JOINT FLANGE

1.
Raise the vehicle and install safe-

ty stands. Remove both rear wheels

and brake drums.

2.
Disconnect the drive shaft from

the axle U-joint flange. Be careful to

avoid dropping the loose universal

joint bearing cups. Hold the cups on

the spider with tape. Mark the cups so

that they will be in their original posi-

tion in relation to the flange when

they are assembled. Remove the drive

shaft from the transmission extension

housing. Install an oil seal replacer

tool in the transmission extension

housing to prevent transmission fluid

leakage. Refer to the transmission

group for the appropriate tool.

3.
Install an in-lb torque wrench on

the pinion nut Fig. 6. Record the tor-

que required to maintain rotation of

the pinion shaft through several revo-

lutions.

4.
While holding the flange with the

tool shown in Fig. 9, remove the inte-

gral pinion nut and washer.

5.
Clean the pinion bearing retainer

around the oil seal. Place a drain pan

under the seal, or raise the front of

the vehicle higher than the rear. Syn-

thetic seals must not be cleaned,

soaked or washed in cleaning solvents.

6. Using the tool shown in Fig. 10,

remove the U-joint flange.

7.
Check splines on the pinion shaft

to be sure they are free of burrs. If

burrs are evident, remove them by

using a fine crocus cloth, working in

rotational motion, then wipe clean.

Apply a small amount of lubricant

to U-joint splines.

8. Install the U-joint flange using

the tool shown in Fig. 12.

FIG. 9—Removing or Installing

Drive Pinion Nut
FIG.
11
— Typical Drive Pinion

Flange Seal Installation
FIG. 12—U-Joint Flange

Installationprocarmanuals.com

04-03-06

Rear Axles — Integral Carrier Type

04-03-06

9. Install a new integral nut and

ivasher on the pinion shaft. (Apply a

small amount of lubricant on the

washer side of the nut.)

10.
Hold the flange with the tool

shown in Fig. 9 while the nut is being

tightened.

11.
Tighten the pinion shaft nut,

rotating the pinion occasionally to in-

sure proper bearing seating, (Fig. 6)

and take frequent preload readings

until the preload is at the original rec-

orded reading established in step 3.

12.
After original preload has been

reached, tighten the pinion nut slowly,
until an additional preload of 6 to 12

in-lbs has been added.

The preload should not exceed the

amount shown above, or bearing fail-

ure may result.

Under no circumstances should the

pinion nut be backed off to lessen pre-

load. If this is done, a new pinion

bearing spacer must be installed. (In

addition, the U-joint flange must

never be hammered on, or pneumatic-

-tools used.)

13.
Remove the oil seal replacer

tool from the transmission extension
housing. Install the front end of the

drive shaft on the transmission output

shaft.

14.
Connect the rear end of the

drive shaft to the axle U-joint flange,

aligning the scribe marks made on the

drive shaft end yoke and the axle U-

joint flange (Fig. 14).

15.
Check the lubricant level. Make

sure the axle is in running position.

Add whatever amount of specified lu-

bricant is required to reach the lower

edge of the filler plug hole, located in

the carrier casting or housing cover.

REMOVAL AND INSTALLATION

REAR AXLE HOUSING

REMOVAL

1.
Raise the vehicle and support it

with safety stands under the rear

frame member.

2.
Drain the lubricant from the

axle.

3.
Make scribe marks on the drive

shaft end yoke and the axle U-joint

flange to insure proper position of the

drive shaft at assembly (Fig. 14). Dis-

connect the drive shaft at the drive

pinion flange.

4.
Disconnect the lower end of the

shock absorbers.

5.
Remove the wheels, brake drums

and both axle shafts as outlined in the

foregoing Section 2.

6. Remove vent hose front vent

tube (Corbin clamp) and remove vent

tube from brake tube junction and

axle housing.

7.
Remove the hydraulic brake T-
fitting from the axle housing. Do not

open the hydraulic brake system lines.

Remove the hydraulic brake line from

its retaining clip on the axle housing.

8. Remove both axle shaft oil seals

with the tools shown in Fig. 8.

9. Remove both brake backing

plates from the axle housing and sus-

pend them above the housing with me-

chanic's wire. The hydraulic brake

SCRIBE MARKS

5/16-24

4 REQ'D.

12-15
LB.
FT.

U-BOLT - 4529 2 REQ'D.

E 1783-A

FIG. 14—Drive Shaft-to-Axle

U-Joint
Connection

El231-A

FIG. 73—Rear Axle Installation—Typical
lines and the parking brake cables are

still attached to the brake carrier

plates.

10.
Support the rear axle housing

on a jack, and then remove the spring

clip nuts. Remove the spring clip

plates (Fig. 13)

11.
Lower the axle housing and re-

move it from under the vehicle.

12.
If the axle housing is being re-

placed, transfer all the differential and

pinion parts to the new housing. See

Section 4, Major Repair Operations.

INSTALLATION

1.
Raise the axle housing into posi-

tion so that the spring clip plates can

be installed. On a Montego or Fair-

lane,
position the spring upper insula-

tors and retainers between the axle

housing and springs and install the

lower insulators. Torque the spring

clip nuts to specification.

2.
Place the brake backing plates in

their normal position on the axle

housing. Use new gaskets on each side

of the brake backing plates.

3.
Install new axle shaft oil seals

with the tool shown in Fig. 8. Soak

the new seals in light weight engine oil

(SAE 10) for 1/2 hour before install-

ing them. Installation without use of

the proper tool will distort the seal

and cause leakage. Coat the outside

edges of the new oil seal with a non-

hardening type of sealer such as Per-

matex No. 2 or its equivalent.

4.
Install the axle shafts, brake

drums and wheels as outlined in Sec-

tion 2.

5.
Attach the hydraulic brake line

T fitting to the axle housing, and se-

cure the hydraulic brake line in its re-

tainer on the axle housing.

6. Install vent tube to brake tubeprocarmanuals.com

04-03-10
Rear Axles
—
Integral Carrier Type

04-03-10

in
the
case. Drive
the
shaft into place

and install
the
lock
pin
(Fig.
21).

6. Place
the
ring gear
on the
differ-

ential case
and
install
the
bolts.
Tor-

que
the
bolts
to
specification.

7.
If the
differential bearings have

been removed, press them
on as

shown (Fig.
24).

INSTALLATION
OF
DRIVE

PINION
AND
DIFFERENTIAL

CASE

1.
Place
the
shim
and
pinion rear

bearing cone
on the
pinion shaft.

Press
the
bearing
and
shim firmly

against
the
pinion shaft shoulder (Fig.

19).

PRESS RAM

Tool T54P-3044-A

Detail
7
2.
Place
a new
pinion bearing
pre-

load spacer
on the
pinion shaft.

3.
Lubricate
the
pinion rear bearing

with axle lubricant.

4.
Lubricate
the
pinion front bear-

ing cone
and
place
it in the
housing.

5.
Install
a new
pinion
oil
seal
in

the carrier casting (Fig.
11).

6. Insert
the
drive pinion shaft

flange into
the
seal
and
hold
it
firmly

against
the
pinion front bearing cone.

From
the
rear
of the
carrier casting,

insert
the
pinion shaft into
the
flange.

7.
Start
a new
pinion shaft
nut.

Hold
the
flange with
the
tool shown
in

Fig.
9 and
tighten
the
pinion shaft

nut.
As the
pinion shaft
nut is
tight-

ened,
the
pinion shaft
is
pulled into

the front bearing cone
and
into
the

flange.

As
the
pinion shaft
is
pulled into

the front bearing cone, pinion shaft

end play
is
reduced. While there
is

still
end
play
in the
pinion shaft,
the

flange
and
cone will
be
felt
to
bottom.

This indicates that
the
bearing cone

and flange have bottomed
on the col-

lapsible spacer.

From this point,
a
much greater

torque must
be
applied
to
turn
the

pinion shaft
nut,
since
the
spacer must

be collapsed. From this point, also,

the
nut
should
be
tightened very slow-

ly
and the
pinion shaft
end
play

checked often,
so
that
the
pinion bear-

ing preload does
not
exceed
the
limits

(Fig.
6).

FIG. 24—Differential Bearing

Installation
If
the
pinion shaft
nut is
tightened

to
the
point that pinion bearing
pre-

load exceeds
the
limits,
the
pinion

shaft must
be
removed
and a
new
col-

lapsible spacer installed.
Do not de-

crease
the
preload
by
loosening
the

pinion shaft
nut.
This will remove
the

compression between
the
pinion front

and rear bearing cones
and the col-

lapsible spacer
and may
permit
the

front bearing cone
to
turn
on the pin-

ion shaft.

&
As
soon
as
there
is
preload
on

the bearings, turn
the
pinion shaft
in

both directions several times
to set the

bearing rollers.

9. Adjust
the
bearing preload
to

specification. Measure
the
preload

with
the
tool shown
in Fig. 6.

10.
Apply
a
thin coating
of
lubri-

cant
on the
bearing bores
so
that
the

differential bearing cups will move

easily.

11.
Place
the
cups
on the
bearings

and
set the
differential case assembly

in
the
carrier casting (Fig.
17).

If
the
gear
set is of the
non-hunting

or partial non-hunting type, assemble

the differential case
and
ring gear
as-

sembly
in the
carrier
so
that
the

marked tooth
on the
pinion indexes

between
the
marked teeth
on the
ring

gear
as
shown
in Fig. 25.

In almost every case
of
improper

assembly (gears assembled
out of

time),
the
noise level
and
probability

of failure will
be
higher than they

would
be
with properly assembled

gears.

When installing
the
hunting type

gear
set (no
timing marks), assemble

the differential case
and
ring gear
as-

sembly
in the
carrier without regard

to
the
matching
of any
particular gear

teeth.

12.
Slide
the
case assembly along

the bores until
a
slight amount
of

backlash
is
felt between
the
gear teeth.

Hold
the
differential case
in
place.

13.
Set the
adjusting nuts
in the

PAINT MARKING INDICATES POSITION
IN
WHICH GEARS WERE LAPPED

E 1335-B

FIG. 25—Typical Gear
Set
Timing Marks
7oo/—T60K-4067-A or 4067 E

E1916A

FIG. 26—Backlash
and
Bearing

Pre-Load Adjustmentprocarmanuals.com

04-04-02
Rear Axle
—
Ford Light-Duty (WER)
04-04-02

DIFFERENTIAL

PINION-4215
RING GEAR
-

4209
LEFT AXLE

SHAFT
-
4235

1

DRIVE PINION
-

4209

SEAL
-
4676

FLANGE-4851

DEFLECTOR -4859

SEAL-
1177

f\G.
7
—Rear Axle Assembly—Light Duty
(WER)
Axle
E 1632-A

IN-VEHICLE ADJUSTMENTS AND REPAIRS

REAR AXLE SHAFT, WHEEL

BEARING
AND OIL
SEAL

REPLACEMENT

REMOVAL

Synthetic wheel bearing seals
are

used
for
production
and as
service
re-

placements. Removal
and
insertion
of

rear axle shafts must
be
performed

with caution.
The
entire length
of the

shaft (including spline)
up to the
seal

journal must pass through
the
seal

without contact.
Any
roughing
or cut-

ting
of the
seal element during axle

removal
or
installation will result
in

early seal failure.

1.
Raise
the
vehicle
on a
hoist.
2.
Remove
the
wheel(s)
and
tire(s)

from
the
brake drum(s).

3.
Position
a
drain
pan and
loosen

the cover
to
differential housing
re-

taining bolts. Drain
the
housing.

4.
Remove
the
attaching (Tinner-

man) nuts that secure
the
brake

drum(s)
to the
axle shaft flange(s),

and then remove
the
drum(s).

5.
Remove
the
differential housing

cover bolts, cover
and
gasket. Discard

the gasket. Remove
the
drain
pan.

6. Position safety stands under
the

rear frame member. Lower
the
hoist

and allow
the
axle
to
lower
as far as

possible.

7.
Working through
the
differential

case opening, remove
the
pinion shaft
lock bolt
and the
pinion shaft
(Fig. 2).

8. Push
the
axle shaft(s) inward

toward
the
center
of the
axle housing.

Remove
the
C-lock(s)
(Fig. 3)
from

the inner
end of the
axle(s). Remove

the axle shaft(s) from
the
housing.
Ex-

treme care must
be
used
to
avoid
con-

tact
of the
axle shaft seal
lip
with
any

portion
of the
axle shaft except
the

seal journal.

9. Remove
the
bearing
and oil
seal

from
the
housing
as
shown
in Fig. 4.

10.
Inspect
the
machined surface
of

the axle shaft
and the
axle housing
for

rough spots
or
other irregularities

which would affect
the
sealing action

of
the oil
seal. Check
the
axle shaft

splines
for
burrs, wear
or
damage.procarmanuals.com

04-04-07
Rear Axle — Ford Light-Duty (WER)
04-04-07

RUNOUT CHECK

E 1573-A

FIG. 70—Checking Backlash and Runout—Light-Duty (WER) Axle

All service operations on the differ-

ential case assembly can be performed

with the axle housing in the vehicle.

1.
Raise the vehicle on a hoist.

2.
Position the drain pan under the

axle housing. Loosen the housing

cover attaching bolts. Drain the lubri-

cant from the housing.

3.
Make scribe marks on the drive

shaft end yoke and the rear axle shaft

companion flange to insure proper po-

sition of the drive shaft at assembly.

Disconnect the driveshaft from the

rear axle companion flange. Be care-

ful to avoid dropping the loose univer-

sal joint bearing cups. Hold the cups

on the spider with tape. Mark the

cups so that they will be in their origi-

nal position in relation to the flange

when they are reassembled. Remove

the drive shaft from the transmission

extension housing. Install an oil seal

replacer tool in the transmission ex-

tension housing to prevent transmis-

sion leakage. Refer to the transmis-

sion group for the appropriate tool.

4.
Raise the vehicle and place

jack-type stands under the rear frame

crossmember. Lower the vehicle on a

hoist and allow the axle to lower as

far as possible.

5.
Remove the axle housing cover

and gasket. Discard the gasket.

6. Perform the Inspection Before

Disassembly of Carrier procedure.

Refer to Part 4-1, Section 3 of this

Shop Manual.

7.
Remove the attaching (Tinner-

man) nuts that secure the rear brake

drums to the axle shaft flanges, and

then remove the drums.

8. Working through the differential

case opening, remove the pinion shaft

lock bolt and pinion shaft (Fig. 2).

9. Push the axle shafts inward

toward the center of the axle housing.

Remove the C-locks (Fig. 3) from the

inner ends of the rear axles. Remove

the axle shafts from the housing. Ex-

treme care must be used to avoid con-

tacting the axle shaft seal lip with any
portion of the axle shaft except the

seal journal.

10.
Remove the bearings and oil

seals from the axle housing as shown

in Fig. 4.

11.
Remove the pinion side gears

and the side gear thrust washers.

12.
Remove both side bearing ad-

justing nut locks (bolts).

13.
Install a dial indicator (Fig. 10),

and check and record the backlash

and ring gear runout.

14.
Mark one differential bearing

cap and the case to help in positioning

the parts properly during assembly.

15.
Remove the bearing cap retain-

ing bolts. Remove the bearing caps,

cups,
adjusting nuts and case assem-

bly.

16.
Hold the drive pinion flange

and remove the pinion nut (Fig. 11).

Discard the nut.

17.
Remove the pinion flange (Fig.

12).

18.
Drive the pinion out of the

front bearing cone and remove it from

the carrier housing. Remove and dis-

card the bearing spacer.

19.
With a hammer and drift re-

move the pinion shaft oil seal out

through the front of the carrier hous-

ing.

20.
Remove the pinion rear bearing

from the drive pinion shaft (Fig. 13).

21.
Measure the shim which is

found under the bearing cone with a

Tool-T57L-485T-A

or 4851-K

El 906A
Tool
-
T6SL-485UA
\

E 1574-A

FIG. 12—Drive Pinion Flange

Removal

1575-A

FIG. 13—Pinion Rear Bearing

Removal

00/
- T57L-4220-A

FIG. 11—Typical Drive Pinion

Shaft Nut Removal
E 1576-A

FIG. 14—Differential Bearing

Removal

micrometer. Record the thickness of

the shim.

DISASSEMBLY OF

DIFFERENTIAL CASE

1.
If the 2 differential side bearings

are to be removed from the differen-

tial case, use the tool shown in Fig.

14.procarmanuals.com

04-04-09
Rear Axle — Ford Light-Duty (WER)
04-04-09

case several revolutions in each direc-

tion while the bearings are loaded to

seat the bearings in their cups. This

step is important.

5. Again loosen the right nut to re-

lease the preload. Check to see that

the left nut contacts the bearing cup.

Using the dial indicator set-up shown

in Fig. 13, Part 4-1, adjust the preload

to 0.008 to 0.012 case spread for new

bearings or 0.005 to 0.008 for the

original bearings, if re-used.

6. Check the runout of the differen-

tial case flange with a dial indicator.

If the runout does not now exceed

specifications, install a new ring gear,

if the runout still exceeds specifica-

tions,
the ring gear is true and the

trouble is due to either a defective

casting or worn bearings.

7.
Remove the differential case

from the carrier and remove the side

bearings from the case.

8. Install new bearings on the case

hubs,
and again install the differential

assembly in the carrier without the

ring gear.

9. Check the case runout again with

the new bearings. If the runout is now

within limits, the old bearings were

excessively worn. Use the new bear-

ings for assembly. If the runout is still

excessive, the case is defective and

should be replaced.

ASSEMBLY OF AXLE

Refer to Part 4-1 of this Shop

Manual for Cleaning and Inspection

procedures before starting assembly

operations.

ASSEMBLY OF

DIFFERENTIAL CASE

1.
Place the ring gear on the differ-

ential case. Install the retaining bolts

and torque them to specification.

2.
If the differential bearings were

removed, press them on as shown in

Fig. 17.

3.
Insert the pinion gear shaft lock

bolt into the case (loosely).

INSTALLATION OF DRIVE

PINION AND

DIFFERENTIAL CASE

1.
Place the shim(s) and pinion rear

bearing cone on the pinion shaft.

Press the bearing and shim(s) firmly

against the pinion shaft shoulder (Fig.

18).

2.
Place a new pinion bearing pre-

load (collapsible) spacer on the pinion

shaft.
REAR BEARING

CONE AND

ROLLER
Press Ram

FIG. 18—Drive Pinion Bearing

Installation

3.
Lubricate the pinion rear bearing

with axle lubricant.

4.
Lubricate the pinion front bear-

ing with axle lubricant. Lubricate the

pinion front bearing cone and place it

in the carrier housing.

5.
Install a new oil seal in the car-

rier casting (Fig. 19).

6. Insert the drive pinion shaft (U-

joint) flange into the pinion seal and

hold it firmly against the pinion front

bearing cone. From the rear of the

carrier casting, insert the pinion shaft

into the flange.

7.
Apply a small amount of lubri-

cant to the washer side of the flange

nut and start the nut. Use a new nut.

Hold the flange with the tool shown in

Fig. 12 and tighten the pinion shaft

nut. As the pinion shaft nut is tight-

ened, the pinion shaft is pulled into

the front bearing cone and into the

flange.

As the pinion shaft is pulled into

the front bearing cone, pinion shaft

end play is reduced. While there is

still end play in the pinion shaft, the

flange and cone will be felt to bottom.

This indicates that the bearing cone

and flange have bottomed on the col-

lapsible spacer.

From this point, a much greater

torque must be applied to turn the

pinion shaft nut, since the spacer must

be collapsed. From this point, also,

the nut should be tightened very slow-

ly and the pinion bearing preload play

checked often, so that the pinion bear-

ing preload does not exceed the speci-

fied limits.

If the pinion shaft nut is tightened

to the point that pinion bearing pre-

load exceeds the limits, the pinion

shaft must be removed and a new col-

lapsible spacer installed. Do not de-

crease the preload by loosening the
/
Tool
-
T58L-4676-A

/ E
1581-A

FIG. 19—Installing Pinion Seal

E 1582-A

FIG. 20—Checking Pinion Bearing

Preload

pinion shaft nut. This will remove the

compression between the pinion front

and rear bearing cones and the col-

lapsible spacer and may permit the

front bearing cone to turn on the pin-

ion shaft.

8. As soon as there is preload on

the bearings, turn the pinion shaft in

both directions several times to seat

the bearing rollers.

9. Adjust the bearing preload to

specification. Measure the preload

with the tool shown in Fig. 20.

10.
Apply a thin coating of lubri-

cant on the bearing bores so that the

differential bearing cups will move

easily.

11.
Place the cups on the bearings

and set the differential case assembly

in the carrier casting.

If the gear set is of the non-hunting

or partial non-hunting type, assemble

the differential case and ring gear as-

sembly in the carrier so that the

marked tooth on the pinion indexes

between the marked teeth on the ring

gear as shown in Fig. 49, Part 4-2.

In almost every case of improper

assembly (gears assembled out of

time),
the noise level and probability

of failure will be higher than they

would be with properly assembled

gears.

When installing the hunting type

gear set (no timing marks), assembleprocarmanuals.com

04-05-03
Specifications

04-05-03

SHIM PACK THICKNESS CHART TRACTION-LOK DIFFERENTIAL

Feeler

Gauge

Reading

0.001

0.002

0.003

0.004

0.005

0.006

0.007

0.008

0.009

0.010

0.011

0.012

0.013

0.014

0.015

0.016

0.017

0.018

0.019

0.020

0.021

0.022

0.023

0.024

0.025

0.026

0.027
Remove Shim(s)

From

Nominal

None

0.005

0.010

0.015

0.020

0.025
Total Req'd

Shim Pack

Thickness®

0.050

0.045

0.040

0.035

0.030

0.025
Feeler

Gauge

Reading

0.028

0.029

0.030

0.031

0.032

0.033

0.034

0.035

0.036

0.037

0.038

0.039

0.040

0.041

0.042

0.043

0.044

0.045

0.046

0.047

0.048

0.049

0.050
Remove Shim(s)

From

Nominal

0.030

0.035

0.040

0.045

0.050
Total Req'd

Shim Pack

Thickness ®

0.020

0.015

0.010

0.005

0.000

©Service Shims are available in 0.010" and 0.005" Thicknesses.

ADJUSTMENT TORQUE SPECIFICATION -(BY AXLE RING GEAR DIAMETERS

Description

Minimum torque required to tighten

pinion flange nut to obtain

correct pinion bearing preload

7 1/4" & 8 1/2"

8", 8 3/4" & 9"

9 3/8"

Pinion Bearing Preload-

collapsible spacer)®

Original Bearings 7 1/4"

8", 8 1/2", 8 3/4", 9"

New Bearings 7 1/4"

8", 8 1/2", 8 3/4", 9"

Pinion Bearing Preload-

(Solid Spacer) 9 3/8" Only
Torque

Lbs.
In.

6-12

8-14

17-32

22-32

15-35
. Lbs. Ft.

140®

175®

180-220
Description

Lockers Only • Minimum rotating

Torque required to turn axle

shaft and side gear with one

wheel on ground:

Limited Slip 7 1/4"

All other R. G. Sizes

Traction-Lok-All

Lockers only-Rotating Torques

required during bench check

after assembly:

Original Clutch Plates-

Limited Slip 71/4",

All other R. G. Sizes

Traction-Lok-(All)

New Clutch Plates-

Limited Slip 7 1/4"

All other R. G. Sizes

Traction-Lok-All
Torque

Lbs.
In.
Lbs.
Ft.

50

75

40

50 Min.

75 Min.

40 Min.

100-125

155-195

100-250G

©If pinion bearing preload exceeds specification before this torque is obtained, install a new spacer.

©With Oil Seal.

©Rotating torque may fluctuate up to 40 Lbs. Ft.procarmanuals.com

04-05-04
Specifications

04-05-04

ATTACHING TORQUE SPECIFICATIONS -(By Axle Ring Gear Diameter)

Description

Differential Bearing Cap Bolt- 7 1/4"

8"

All Others

Differential Bearing Adjusting

Nut Lock Bolts

Carrier
to
Housing Stud Nuts-

8", 8 3/4", 9" 8 3/8"

Pinion Retainer
to
Carrier Bolts-

8", 8 3/4", 9" 9 3/8"

Ring Gear Attaching Bolts-

7 1/4"

All Others

Differential Pinion Shaft

Lock Pin
•
8 1/2" Only
Torque Lbs.
Ft.

40-55

55-70

70-85

12-25

25-40

30-45

40-55

65-80

15-22
Description

Rear Cover Screw and Washer

Assemblies
-8
1/4" &
8
1/2

Only

Oil Filler Plug

Rear Axle Shaft Bearing Retainer

Bolt Nuts:

Falcon,
Fairlane, Montego,

Mustang and Cougar (All)

Ford & Meteor (Exc.
8 1/2" R.G.)

Mercury,
T
Bird

Lincoln Continental (All)

Brake Backing Plate Bolt Nuts-

Ford & Meteor
8
1/2" Only
Torque Lbs.
Ft.

25-35

25-50

20-40

50-75

30-55

20-40

LUBRICANT
CAPACITIES
AND CHECKING PROCEDURES®

Vehicle

Falcon,
Mustang

Cougar, Fairlane, Falcon

Montego, Mustang

Ford,
Meteor

Ford,
Meteor

Cougar, Fairlane, Falcon, Ford,

Mercury, Meteor, Montego, Mustang

Lincoln,
Thunderbird
Engine

(C.I.D.)

170,
200

250,
302

240,
302

240,
302

351,
390,

428,
429

429,
460
Axle

Ratio

All

All

2.80:1,
3.10:1

All Except

2.80:1,
3.10:1

All

All
U.S. Measure

Capacity® (Pints)

2.5

4.0

4.0

5.0

5.0

5.0©
Imperial

Capacity
CD
(Pints)

2

31/5

3 1/5

4.0

4.0

4.0©

©All limited slip and Traction-Lok axles use ESW-M2C-104-A lubricant (C6AZ-19580-C).

All conventional axles use ESW-M2C-105-A lubricant (C6AZ-19580-B).

©Approximate refill capacity-Actual lubricant capacities are determined
by
filling
to
bottom
of
filler hole.

©To check these axles, the plug should be backed
out
slowly.
If
seepage occurs around the threads, the plug should
be
turned back
in

immediately to avoid any drainage. This indicates that the specified amount
of
lubricant
is
present
in
the axle.

SPECIAL TOOLS

FORD,
MERCURY, METEOR

Ford Tool No.

T66L-4204-L

T57L-500-A

T50T-100-A

TOOL-4235-C

T00L-4621-A

TOOL-1225-D

T00L42344

TOOL-1177

TOOL-U75-AB

T57L4220-A

T00L4221-AE

T00L-4221-AF

T66P-4220-P

TOOL-4851-K
Former No.

42211 or

42211-A

6005-M

6005-MS

B-160

4235C

—

—

4234-A

4245-B

1175-AB

—

4221-AF

T57L-4851-A

4851-K
Description

Limited-Slip Differential Check

Bench Fixture

Impact Hammer

Axle Shaft Remover

Drive Pinion Bearing and

Rear Wheel Bear Replacer

Rear Wheel Bearing Remover

Rear Wheel Bearing Installer

Rear Wheel Bearing Oil Seal Installer

Rear Wheel Bearing Oil Seal Remover

Differential Bearing Remover

Differential Bearing Remover

U-Joint
Flange Holder
Ford Tool No.

T53T4851-A

T00L4858-D

T57L4614-A

T00L4621-K

T53L-200-A

T57L-4625-A or

T00L4625-K

T57L4616-A or

T00L4615-D

T58L-101-A

T55P4616-A2

T57L4621-B or

T00L4621-L

T58L4676-A

T00L4858-E
Former No.

4851-A, D

—

4614

4621-K

—

4625-K

—

—

—

—

4676-F

4858-E
Description

U-Joint
Flange Remover

U-Joint
Flange Remover

Drive Pinion Retainer Support

Pinion Rear Bearing Cone Remover

Handle Adapter

Pinion Pilot Bearing Remover and

Installer

Pinion Front Bearing Cup Remover

and Replacer

Puller Attachment—For Bearing

Cup Removal

Pinion Rear Bearing Cup Remover

and Replacer

Pinion Rear Bearing Cone Installer

Drive Pinion Oil Seal Replacer

U-Joint
Flange and Pinion Bearing

Replacerprocarmanuals.com