1993 DODGE TRUCK torque

•

FRONT
SUSPENSION
AND
AXLE
2 - 39

Fig.
59
Pinion
Height
Block
Against
Arbor
Fig.
60
Pinion
Gear Depth Measurement
(8) Place the depth shims in the pinion gear rear
bearing bore. Install the bearing cup (Fig. 61) with Installer D-145 and Handle C-4171.
Ensure the cup is correctly seated. (9) Install the pinion front bearing cup with In­
staller D-144 and Handle C-4171 (Fig. 62).
(10) Install the rear bearing (and slinger if used)
on the pinion gear with Installer W-262 until com­
pletely seated (Fig. 63).
(11) Assemble preload shims onto pinion and in­
stall the pinion gear in housing.
(12) Install pinion front bearing, oil slinger, yoke,
washer and nut. Install the yoke with Installer C-3718 and Wrench C-3281 (Fig. 64).
(13) Tighten the yoke nut to 271-298 N-m (200-220
ft. lbs.) torque. (14) Check bearing preload torque with an inch
pound torque wrench (Fig. 65). The torque necessary
to rotate the pinion gear should be;
• Original Bearings — 1 to 3 N*m (10 to 20 in. lbs.)
• New Bearings — 2 to 5 N*m (20 to 40 in. lbs.)
SPECIAL
TOOL

C-4171
J9202-95
Fig.
61
Pinion
Rear Bearing Cup
Installation
SPECIAL
TOOL
D-144
SPECIAL Fig.
62
Pinion
Front Bearing Cup
Installation

If the preload torque is not within the specified tol­
erance, correct the shim thickness accordingly (Fig.
66);

• Increase the preload torque, decrease the shim
thickness
• Decrease the preload torque, increase the shim
thickness
(15) Remove the pinion yoke nut and washer. Use
Remover C-452 and Wrench C-3281 to remove the
pinion yoke (Fig. 67).
(16) Apply a light coating of gear lubricant on the
lip of pinion seal. Install the new seal (Fig. 68) with
Installer W-147-E and Handle C-4171
(17) Install the yoke with Installer C-3718 and
Wrench C-3281 (Fig. 64). (18) Install a new yoke nut and tighten to 271 to
298 N-m (200 to 220 ft. lbs.) torque.

•

FRONT
SUSPENSION
AND
AXLE
2 - 41

SPECIAL
TOOL
D-145
Fig.
67
Pinion
Yoke
Removal
HANDLE
C-4171
SPECIAL

TOOL

C-4171
J9202-95 Fig.
69
Pinion
Rear Bearing Cup
Installation

SPECIAL
TOOL
D-144
SPECIAL

TOOL

C-4171

SPECIAL
TOOL

W-147-E
(J25104)

J9202-19
Fig.
68
Pinion
Seal
Installation
the separation distance. The required thickness
of the depth shim(s) is determined according to
the following information.
(4) Loosen the compression nut tool. Lubricate the
pinion gear front and rear bearings with gear lubri­ cant. Re-tighten the compression nut tool to 1 to 3
N«m (15 to 25 in. lbs.) torque. Rotate the pinion gear
several complete revolutions to align the bearing
rollers.
(5) Install Gauge Block SP-5260 at the end of SP-

526.
Install Cap Screw (SP-536) and tighten with
Wrench
SP-531.

(6) Position Crossbore Arbor (SP-5183) in the
dif­

ferential housing.
J9202-35
Fig.
70
Pinion
Front Bearing Cup
Installation
Center the arbor in cradles so equal space exists at
both ends. Position the bearing caps on the arbor
tool. Install the bolts. Tighten the cap bolts to 14 N*m (10 ft. lbs.) torque.
(7) Trial fit depth shim(s) or feeler gauge between
the crossbore arbor and gauge block (Fig. 72). The fit must be snug but not tight (drag friction of a
feeler gauge blade).
Depth shims are available in 0.001-inch incre­
ments from 0.020 inch to 0.038 inch.
(8) Note the etched number on the face of the drive
pinion gear (e.g., -0, -1, -2, +1, +2, etc.). The num­
bers represent thousands-of-an-inch deviation from
the standard. If the number is - (negative), add that value to the required thickness of the depth shim(s).
If the number is + (positive), subtract that value

2
- 42
FRONT
SUSPENSION
AND
AXLE

DIFFERENTIAL HOUSING HAMMER
DRIVER
HANDLE
YOKE
HOLDING TOOL
C-3281

Fig.
71 Seating Pinion Bearings SPACER
J9002-91

DEPTH
SHIMS
HERE
REAR
PINION

BEARING

SHAFT

BEARING
CAP ARBOR
J9203-53

Fig.
72 Depth Shim(s) Selection from the thickness of the depth shim(s). If the num­
ber is 0, no change is necessary.
(9) Remove the tools from the differential housing.
(10) Remove the rear bearing cup from housing
(Fig. 73). Use Remover D-162 and Handle C-4171. (11) Position depth shims in housing rear bearing
cup bore.
(12) Install the pinion rear bearing cup (Fig. 70)
with Installer D-145 and Handle C-4171.
Ensure the cup is correctly seated. (13) If the depth of mesh has been followed accord­
ing to the instructions above, good gear teeth contact
should exist.
(14) Install the rear bearing (and slinger if used)
on the pinion gear with Installer W-262 until com­
pletely seated (Fig. 74).
(15) Install pinion in housing bore.
(16) Assemble preload shims onto pinion and in­
stall the pinion gear in housing. (17) Install pinion front bearing, oil slinger, yoke,
washer and nut. Install the yoke with Installer C-3718 and Wrench C-3281 (Fig. 75).
J9203-58

Fig.
73 Rear Bearing Cup
Removal
PRESS
•

DRIVE

PINION
GEAR

SHAFT

REAR BEARING
^
INSTALLATION
TOOL
DRIVE

PINION
GEAR
OIL

SUNGER

J9302-68

Fig.
74
Pinion
Rear Bearing
Installation
(18) Tighten the yoke nut to 271-298 N-m (200-220
ft. lbs.) torque.
(19) Check bearing preload torque with an inch
pound torque wrench (Fig. 76). The torque necessary to rotate the pinion gear should be;
• Original Bearings — 1 to 3 N-m (10 to 20 in. lbs.)
• New Bearings — 2 to 5 N-m (20 to 40 in. lbs.) If the preload torque is not within the specified tol­
erance, correct the shim thickness accordingly (Fig.
77);

FRONT SUSPENSION
AND
AXLE
2 43

SPECIAL
DIFFERENTIAL
TOOL
HOUSING J9103-21

Fig. 75 Pinion Yoke Installation
Fig. 76 Rotating Pinion Gear • Increase the preload torque, decrease the shim
thickness • Decrease the preload torque, increase the shim
thickness
(20) Remove the pinion yoke nut and washer. Use
Remover C-452 and Wrench C-3281 to remove the
pinion yoke (Fig. 78).
(21) Apply a light coating of gear lubricant on the
lip of pinion seal. Install the new seal (Fig. 79) with
Installer
W-147-E
and Handle C-4171.
(22) Install the yoke with Installer C-3718 and
Wrench C-3281 (Fig. 80).
(23) Install a new yoke nut and tighten to 271-298
N*m (200-220 ft. lbs.) torque.
REMOVE
SHIMS

SHIM
PACKS
RY660
Fig. 77 Shim Locations

C-452
J9102-31
Fig. 78 Pinion Yoke Removal
RING
GEAR BACKLASH
ADJUSTMENT

(1) Place Master Differential Bearing D-135
(D-345) on the case hubs.
(2) Install a pilot stud at the right side of housing.
Attach Dial Indicator C-3339 to the pilot stud. Load indicator plunger against the back of the ring gear (Fig. 81). Ensure ring and pinion gear teeth are
tightly meshed. Zero the indicator.
(3) Insert a small pry bar between the bearing cap
and left side of differential case. Pry the case as far
as possible to right side (Fig. 81). Zero the dial indi­
cator pointer.
(4) Repeat the measurement several times to check
consistency. Record the travel distance.

2
- 44
FRONT
SUSPENSION
AND
AXLE

Fig.
79
Pinion
Seal
Installation
SPECIAL
DIFFERENTIAL
TOOL
HOUSING

J9103-21

Fig.
80
Pinion
Yoke Installation The measurement shows shim thickness neces­
sary to eliminate ring gear backlash. Subtract
this thickness from case zero end-play shim
thickness. The shims must be placed at the ring gear side between the case and bearing.
(5) Remove indicator and pilot stud.
(6) Remove the differential case from housing.
(7) Remove the master bearing tools from the
dif­

ferential case hubs. •

Fig.
81
Ring
Gear
Backlash
Measurement (8) Position the backlash shims (with determined
thickness) on case hub (ring gear side). Install bear­ ing on the hub with Installer D-156 and Handle
C-4171 (Fig. 82).

Fig.
82
Differential
Bearing Installation
(9) Position the remaining zero end-play shims on
hub at opposite side of case. Include an additional 0.015-in (0.38-mm) thick shim on this hub. This will
provide the required differential bearing preload torque.

4
____________
(10) Install bearing
on hub
with Installer
D-156

and Handle C-4171
(Fig. 82).
(11) Install
new
axle shaft
oil
seal
in
differential
housing with Installer D-112-44. Apply lubricant
to
lip
of
seal. (12) Match each bearing
cup
with bearing (origi­

nal).
Install
the
cups
on the
bearings.
(13) Position Spreader W-129-A with
the
tool
dowel pins seated
in the
locating holes
(Fig. 83). In­

stall
the
holddown clamps
and
tighten
the
tool turn-
buckle finger-tight.

Fig.
83
Differential
Housing
Separation
(14) Install
a
pilot stud
at the
left side
of the dif­

ferential housing. Attach Dial Indicator
to
housing
pilot stud. Load
the
indicator plunger against
the op­
posite side
of the
housing
(Fig. 83) and
zero
the
indi­ cator.

CAUTION:
Do not
spread
over
the
specified
dis­

tance.
If the
housing
is
over-separated,
it
could
be
distorted
or
damaged.

(15) Separate
the
housing enough
to
install
the

case
in the
housing. Separate housing
a
maximum distance
of 0.38 mm
(0.015
in)
with
the
spreader
tool. Measure
the
distance with
the
dial indicator (Fig.
83).

(16) Remove
the
dial indicator.
(17) Install case
in the
housing. Ensure
the
differ­
ential bearings
are
fully seated. Remove
the
spreader.
(18) Observe
the
assembly reference marks
and po­

sition
the
bearing caps
at
their original locations (Fig.
84).
Tighten
the
bearing
cap
bolts
to
95-122
N-m (70-90
ft. lbs.)
torque.
(19) Rotate assembly several revolutions
to
seat
bearings. Measure backlash
at
three equally spaced locations with
a
dial indicator
(Fig. 85).
FRONT
SUSPENSION
AND
AXLE
2 - 45

Fig.
84
Differential
Bearing
Cap
Reference Letters
Fig.
85
Ring Gear
Backlash
Measurement
The ring gear backlash must
be
within 0.004
-

0.009 inch
(0.10 - 0.23 mm). It
cannot vary more
than 0.002 inch
(0.05 mm)
between
the
points checked.
(20) Excessive backlash
is
corrected
by
moving
the

ring gear teeth closer
to the
pinion gear teeth.
Insuf­

ficient backlash
is
corrected
by
moving
the
ring gear away from
the
pinion gear. Backlash correction
is ac­

complished
by
transferring shims from
one
side
to

the other.
If
the
mesh
and
backlash steps have been followed
in
the
procedures above, good gear teeth contact pat­
terns should exist.
RING
mMR
TEETH
CONTACT
PATTERN
ANALYSIS The ring gear teeth contact patterns will show
if

the pinion gear depth shim(s) have
the
correct thick­
ness.
It
will also show
if the
ring gear backlash
has

been adjusted correctly.
The
backlash must
be
main­ tained within
the
specified limits until
the
correct
teeth contact patterns
are
obtained.

2
- 48
FRONT
SUSPENSION
AND
AXLE

•
SPECIFICATIONS

MODEL
44 FRONT
AXLE

Axle
Type
Semi-floating, hypoid
Application
D-TRK
Ring
Gear
Diameter
8.50 in.
(21.59
cm)
Lubricants
MOPAR
Gear Lubricant or
equivalent
SAE
75W-90,

API
Grade
GL-5,
MIL-L-2105C

Disconnect
Type
Vacuum
operated

Lubricant Capacity 5.6 pts.
(2.65L)

Axle Model Dana M44F
Axle Ratio.. 3.54 To
1
3.92 4.09

Track
66.9 in.

GAWR
3500
lbs.
Differential
Bearing
Preload Shim 0.015 in. 0.38 mm

Differential
Side

Gear-to-Case
Clearance..
0.000-0.007
in.
0.00-0.18
mm

Ring
Gear
Backlash
0.005-0.008
in.
0.12-0.20
mm

Drive
Pinion Gearshaft Bearing Break-Away Preload
Torque

Original
Bearings
10-20 in. lbs.
1
-2 N»m Replacement
Bearings
20-40
in. lbs. 2-5 N»m

Drive
Pinion Gear Depth Select
shims
Standard
Setting
2.625
in. 66.6 mm

Side
Gear Clearance (max.)...
0.006
in. 0.15 mm

Case
Runout
(max.)
0.006
in. 0.15 mm
J9202-106

FRONT
SUSPENSION
AND
AXLE
2 - 51

LUBRICANT

Multi-purpose API GL 5 quality hypoid gear lubri­
cant should be used for Model 60 axles. MOPAR Hy­
poid Gear Lubricant conforms to these specifications and is recommended.

CAUTION:
If a front axle is
submerged
in
water,
the
axle lubricant
must
be replaced immediately.

DRAIN AND REFILL
(1) Drive the vehicle until the gear lubricant
reaches normal operating temperature. (2) Raise and support the vehicle.
(3) Remove the lubricant fill hole plug from the
differential housing cover. (4) Remove the differential housing cover. Allow
the original lubricant to completely drain from the
housing and axle shaft tubes. (5) With standard differential, clean the differen­
tial and the housing cavity with a flushing oil (or light engine oil). This will remove the residual lubri­cant and foreign matter. Do not use water, steam,
kerosene or gasoline for flushing. (6) Scrape the residual gasket from the housing
and cover mating surfaces. Clean the mating sur­
faces with mineral spirits. Install a new cover gas­
ket. Apply a bead of MOPAR® Silicone Rubber Sealant on the housing cover (Fig. 2). Allow the
sealant to cure for a few minutes.

SEALING

SURFACE
CONTOUR
OF
BEAD
BEAD

THICKNESS

6.35mm (1/4
J9302-30

Fig.
2 Sealant On
Housing
Cover

Install the housing cover within 5 minutes af­
ter applying the sealant. If not installed the seal­ ant must be removed and another bead applied. (7) Install the cover on the differential with the

bolts.
Install the identification tag. Tighten the cover
bolts to 47 Nnn (35 ft. lbs.) torque.

CAUTION:
Overfilling the
differential
can result in
the lubricant
foaming
and overheating.
(8) Refill the differential housing with the speci­
fied quantity of MOPAR® Hypoid Gear Lubricant. (9) Install the fill hole plug and tighten to 34 N«m
(25 ft. lbs.) torque. (10) Road test the vehicle.

PINION
SHAFT
SEAL

REMOVAL (1) Raise and support the vehicle.
(2) Mark the drive shaft yoke and pinion yoke for
installation alignment reference.
(3) Remove the drive shaft from the yoke.
(4) Rotate the pinion gear three or four times.
(5) Remove the pinion yoke nut and washer. Use
Remover C-452 and Wrench C-3281 to remove the
pinion yoke (Fig. 3).
(6) Mark the positions of the yoke and pinion gear
for installation alignment reference.

SPECIAL
TOOL
C-3281

SPECIAL
TOOL
C-452
J9102-31

Fig.
3
Pinion
Yoke
Removal

(7) Use Remover C-748 to remove the pinion gear
seal (Fig. 4).

INSTALLATION
(1) Apply a light coating of gear lubricant on the
lip of pinion seal. Install the new seal (Fig. 5) use In­
staller C-3719-A and Handle C-4735
(2) Align the installation reference marks and po­
sition the yoke on the pinion gear.
(3) Install the pinion yoke, washer, and nut on
shaft. Tighten the nut to 339-366 N-m (250-270 ft.
lbs.) torque (Fig. 6).
(4) Align the installation reference marks and at­
tach the drive shaft to the yoke. (5) Add API grade GL 5 hypoid gear lubricant to