Jeep UNIVERSAL CJ-2A - Use

N
REAR AX LE
N-1.
GENERAL
The rear ax le on a ll models discussed here is of t he
semi- floating type with the excep tion of the Mod el
Cj-2A built previous to Serial No. 13453. All
Model
CJ- 2A vehicles before this ser ial number are
equipped with the full-floating type.
Information for front and rear axle differentials is
covered
in this section. All models have full-floa ti ng
hypoid front axles.
For Powr-Lok differential, see th e special instruc -
tions at the end of this section.
Info r mation for axle shaft adjustment is given in
Section Q.
NOTE: Wh e nev er an ax le differential is inspected,
see if the ring gear lock straps are present. These
straps should be installed on those ax les without
them. See Fig . 238.
FIG . 23 4- RATIO AND POWR - LOK
DIFFERENTIAL IDENTIFI CAT ION
! - Rati o Tag 2- Po wr -Lok Tug
FIG. 235 - AXLE MODEL IDENTIFICATION
The axle model number is cast int o the axle housing
on or near one of the reinforcing we bs . See Fig. 235.
A
metal tag under one of the differential housing
cover sc rews is stampe d to identify the number
198
of teet h in the drive gear and pinion. See Fig. 234.
By dividing the larger number (ring gear teeth)
by the smaller n umber (pinion teet h) the axle
r atio can be dete rmined. Thus, 4 7/ 11 denotes a
4.27:1
ratio.
NOTE: E arly pr od uction CJ -3B, CJ-5, CJ-6,
models have a 5.38 axle ratio wit h a transmission
low-gear ratio of 2. 798. Late production models
have a 4.27 axle ratio, with a new transmission
having a low-gear ratio of 3.339. This transmission
can be identified by a threaded gear s hift lever for
the gear shift knob. B ot h early and late production
tra nsmissi ons are interchangeable.
N- 2. Remo v in g R ea r Axle A sse mbl y
Raise the r ea r of the vehicle with a hoist and
safely suppor t the frame ahead of the rear springs.
Remove t he wheels and disconnect the propeller
sha ft at the r ear universal joint compa ni on fl ange.
Di sconnect the shock absorbers at the axl e mount -
ing pads. D isconnect the brak e h ydra ulic hose at
the tee just forward of the tubing clipped to the
ax le. Support the ax le assembly on a jack, remove
the spring to ax le U - bolt clips and slide the as-
sembly from underneath the vehicle.
N- 3. Full Flo a ting Ax le Sh aft Remov al
• Early M ode l CJ -2 A.
To remove th e full-floating axle shaft, it is not
necessary to jack up the rear wheel. Removal
procedure:
a. Re m ove the six screws ho l ding the driving
flange to th e wheel hub.
b. Screw two flange screws into the threaded holes
in the axle flange to loosen the shaft. Remove the
shaft.
c. If shaft is broken, remove the oute r piece of t he
shaft . Then, loop a piece of stiff wire over the piece
of shaft r ema ining inside the housing. Pull the
wire to bind t he loop on the shaft piece and re -
move it.
d. Replace the shaft in reverse order. I nstall the
shaft carefully so the inner oil seal at the diffe ren -
tial is not kn ocked o ut.
N-4 . Se miflo a ting Rear Ax le Sh a ft Remov al
• Refer to Fig. 23 3.
To r emove axle shaft s from an axle fo ll ow the
sequence below:
a. Jack up th e wheel and rem ov e the hub cap.
b. Remove the axle shaft nut .
c. Use a puller (Tool C-319, Fig. 236 ), to remove
the wheel hu b.
d. Remove the screws attaching th e brake dust
shield, gr ease and bearing retainers, and brake
assembly. Remove the shield and retaine r.
e. Pull out the axle shaft with Tool C-63 7 using
care not to l ose the adjusting shims. Should
an axle shaft be broken, the inner end can usually
be drawn out of the housing with a wire loop after
the outer oil seal is removed. However, if the broken
en d is less than 8" [20,3 em. ] long it will us ually be
nece s sary to remo ve t he differ entia l.