Jeep UNIVERSAL CJ-2A - Page 209

N
REAR AXLE
Note that Fig. 265 shows one side only and the
opposite side would be the reverse order when the
ref erence arrow A is pointing toward the case in
the opposite direction.
N-1 7. Application
T he Powr -L ok differential can be installed in the
axle assembly of some models which did not have
Powr -L ok as original equ ipment . On other models,
a complete axle assemb ly or other r elated parts
will be re quired to co nvert to P o wr -L ok.
No te: Wh en converting a standard axle to a
P
owr-Lok axle, if possible fashion a metal tag
marked with the letter T and install as des cribed
under Identification above.
a. All vehicles with M odel 44 rear axle can be
converted by ins talling the proper Powr-Lok dif -
ferential in place of the standard differential if the
original axle shafts have involute splines. If not,
the proper involut e splined shafts for the vehicle
will have to be installed.
b. M odel 23, 25 and 27 axles may be con ve rted by
installing the prop er Powr -L ok differential.
c. Th e axle shaft spacer and axle shaft spa cer roll
pin shown in F ig. 264 are used only with a semi -
floating axle. Th ese parts are not present on a
Po wr -L ok full-flo at ing axle. Thi s means that th e
sp acer a nd roll pin will be foun d in the rear Pow r
L
ok a xl e differential but not in the front Powr
Lok axle differential.
N-18. Servicing Powr-Lok
Wh enever a replacement or conversion Powr - Lok
di fferential assembly is to be inst a lled in an axle
which has been previously in servic e and acquired
mileag e, be sure to record the amount of backlash
betwe en the ring gear and pinion at the time of
disassembly. Wh en the axle is again assembled the
rin g gear and pi nion must be set to thi s sam e
amo u nt of backlash .
No te : Parts are not available for any cone typ e
P
owr-Lok differ ential. If repai r of these differentials
is necessa r y, the complete unit must be repl aced.
115 64
Not e : The only lubricant sp ecified for Powr -L ok
differ ent i al s is Je ep Powr-L ok Differen tial Oil,
P art No. 94557, furnished in pint ca ns. O rdinary
multipurpose gear lu br icant must no t be us ed.
N-19 . Powr-Lok Diffe r entia l Overhaul
Th e procedu re for overha ulin g disc type Powr - Lok
diff erent ials is as follows:
a . R em
ove t he Powr - Lok di fferenti al case assembly
fr om the axle. Do not remov e the ring gear or bea r-
i ng cones unless replacement is to be made. M ark
the bearing cups so they may later be reass embled
with the same bearing cones . M ark the diff erential
case halves for correct alignment at reass embly .
E
ach pini on mat e cross shaft should also be marked
so t h at eac h pin ca m surface will match with the
sam e V -ramp in the case when r eassemb l ed.
b. S eparate the case halves.
c. Remove clutch friction discs and plates. Car e
should be taken to see how the friction pl ates and
fri ction discs and dish ed plates are asse mbl ed. Th e
illu
stration (Fig. 265) shows the a rrang ement of
plates and discs used for current production model
Powr - Lok differentials . E ar li er production dif -
ferentials will hav e a di fferent arrangement, and
a differen t number, of plates and discs. If the plates
and dis cs are n ot to be replaced, th ey are to be rein-
stalled in their or ig in al a rran gement. If the rlates
and discs are to be replaced, the new plates and
d1scs are to be installed with the a rr angement
sh own in Fig . 265.
Impor ta nt - Wh en installing a new plat e a nd
disc set (with dished plates) in a Model 25 dif-
ferential which did not have dished plates as
original equipment the
1
11
;" dead plate must be
rem oved (See Fi g. 264). In such cases, if ther e is
any indi cation of differential case wear, complete
differential replacement r ather than attempted
repair is recommend ed.
d. R emove the pinion mate cr oss shafts, bevel
pinion mate gears, bevel side gears and sid e gear
rings.
FIG . 264- POWR-LOK DIFFERENTIAL-CJ-38, Cj - 5, CJ-6, Dj-3A
1- DiiTcrcntial Case Flange Holf
2- Diac ond Plate Set
3- Side Gear Differential Rin~
208
~-Side G cor and Pinion Mot e Gcnr Set
5- Cro ss Pin io n Mote Shaft
6 - 0iffcrentiol Co•e But ton H olf
7- Axle Sh nft Space r
8-
Axle Shaft S pa cer Ro ll Pi n