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2F-4 AXLES - FRONT HUBS
MODEL NUMBER
J42298
Fig. 2F-2 Model 44 Front Axle Code Number Location
On Model 30 front axles, the axle code number is cast
into the bottom surface of the differential Housing.
The axle build date and manufacturers build date are
stamped on the right-side axle tube adjacent to the axle
housing cover.
The axle build date is decoded as follows: The first
number represents the month, the second number the
day of the month, the third number the year, the letter
the shift, and the last number is the assembly line. If
there are two build dates, the latter date will indicate
when the brake components were installed.
The gear ratio tag attached to the left side of the axle
housing cover indicates the Jeep manufacturing refer
ence part number and the numerical tooth combination
of the ring and pinion gears.
Axle Ratio and Code Letter Chart
Differential
Gear
Code
Pinion-to-Drive
Type
Ratio
Letter
Gear Teeth
Standard
2.73
D
15/41
Trac-Lok
2.73
DD
15-41
Standard
3.31
B
13/43
Trac-Lok
3.31
CC
13/43
Standard
3.54
A
11/39
Trac-Lok
3.54
AA
11/39
Standard
3.73
GG
11/41
Trac-Lok
3.73
Q
11,41
Standard
4.10
C
10 41
Trac-Lok
4.10
CC
10 41
AXLE HOUSING SERVICE
81014
The front axle housing should be inspected period
ically for weld cracks or other damage that could cause
loss of lubricant, affect driving characteristics, or result
in front end misalignment.
NOTE: If the vehicle is driven through water that is
deep enough to cover the front hubs, steering knuckles
and brake components should be disassembled and in
spected for water-dirt contamination and water dam
age. All components should be cleaned thoroughly,
examined carefully, and lubricated as necessary before'"'
assembly. During the inspection, pay particular at ten-^
Hon to the axle bearings, spindle bearings and brake
components. Damaged or contaminated parts should be '
replaced.
—
FRONT WHEEL ALIGNMENT
Toe-in and caster are the only adjustable front align
ment angles. Camber is built into the axle during manu- "
facture and cannot be adjusted.
An alignment rack should be used to check the align
ment angles. The use of a rack will ensure more accurate -
readings and avoid the possibility of incorrect
adjustments.
Toe-in is adjusted by lengthening or shortening the -
steering tie rod. Caster is adjusted by installing tapered
shims between the front axle spring mounting pad and
front spring. Refer to Front Wheel Alignment in Chap- -»
ter 2M for measurement and adjustment procedures.
HIGH STEERING EFFORT
-
High steering effort or slow return of the steering -
mechanism after turns may be the result of excessive
steering knuckle ball stud preload. If this condition oc
curs and all other items affecting steering effort are —
functioning normally, ball stud preload should be
checked as follows:
Ball Stud Preload Measurement
(1) Raise vehicle.
(2) Remove front wheels.
(3) If vehicle
has steering damper, disconnect --
damper at tie rod and move damper aside.
(4) Unlock steering column.
(5) Disconnect steering connecting rod. On CJ mod- -
els, disconnect rod at right-side steering knuckle. On all
other models, disconnect connecting rod at right-side of
tie rod.
0m
(6) Remove cotter pin and retaining nut attaching
tie rod to right-side steering knuckle. Discard cotter pin.
(7) Rotate both steering knuckles through complete -
arc several times. Work from right-side of vehicle to
rotate knuckles.
(8) Assemble socket and 0-50 foot-pound (68 »m) itm
capacity torque wrench and install wrench on tie rod
retaining nut.
NOTE: The torque wrench must be positioned at a 90
degree angle to the steering knuckle arm to obtain an u
accurate reading.
(9) Rotate knuckles slowly and steadily through a
complete arc and measure torque required to rotate
knuckles.
(a) If reading is less than 25 foot-pounds (34
N#m), turning effort is within specifications and fault is
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