Jeep UNIVERSAL CJ-2A - Page 206

'J ee p' UNIVERSAL and 'Jeep ' DIS P ATCHER
N
ins ta lling th e univ er sal joi nt fl ange . us e fl a ng e
ins ta lling To ol W -1 62 , Fi g. 255.
N-11. Adju st m ent of Differential Bearing
Pr e lo ad a nd Ring Gear Backlash
Numb er s in parent h eses r efer to Fig. 238 .
Th e a djus t ment of the di fferen tial bea rin gs is
maint a in ed by the us e of shim s pl aced be t ween
di ffere nti al c as e a nd the bear in g cone and roller.
To a djus t th e diff erenti al bea ring preload, fi r st
ins ta ll th e diffe r ent i al case and bea rin gs in the
car ri er without shim s and with the bea rin g cu ps
snug.
Ho
ldin g the r in g gear in contact with the pini on.
and usin g a sc r ewdr i ver blad e to move the b ear i ng
cups t owa rd the center, insert feel er ga uge in
be t ween bot h bear in g cups and the carrier. A fter
the s hi m pack for each bear i ng has been estab li shed,
remo ve the di fferent i al assem b ly, k eepi ng the
sh im pac ks s eparated. A dd an additional .0 I 5"
[0,0381 mm.] t hi ck ness of shims to the pack on
the toot h side of the ring gear .
T here
should be on ly .001 " to .002" [0 .0254 a
0,0508 mm. I backlash.
P lace the di fferential bearing shim packs on the
di
fferential case un der each bear ing.
Install the bear i ngs with Driver W -142 for m ode ls
23 and 25
ax les, d river W -188 for model 44 and
dr i ver C -3716 for model 27 axles .. as shown in
Fi g. 256.
Note : W hen ove rh a ulin g the fu ll - float i ng typ e
differen
tia l u sed on all front ax l es of these mode ls,
check the inn er axle oil seals to deter mi ne if th ey
are sat is factory. Sho u ld new sea ls be re qu ir ed
install th em wi th Too l W -128 as shown in Fi g. 257.
A
ttach the carr i er spr ea der tool W- 129, ins tall a
d i
al indicator, and spread the car rier a maxim um
of .020" [0,508 mm . ]. Remove the in di cator,
lu br i cate the bearings, and then place the di fferen-
tial asse m bly in the ca rri er. In the a bs en ce of
too l W -129. the ass e mbly may be in stalled by
coc ki ng the bear i ng cups sli ght ly wh en the di fferen-
tia l is pl aced in the ca r rier. See Fig . 258.
T
ap the unit ca r ef ully into place , making s ur e the
rin g gear tee th mesh wi th the pin ion teet h. Ins ta ll
bear i ng caps , m atching the ir ma rk in gs wi th those
on the carr i er . A pply sea l ing com po un d to the scr ew
threads . Torque the sc r ews 70 to 90 lb -f t. (9,68 a
12,45 kg-m.].
Ins tall in dicator to ch eck r in g gear bac k la sh.
S ee Fi g. 259. Ch eck bac klash at two po ints.
B ac klash mu st be he ld b etwee n .0 05" to . 01 0"
[0 ,13 a 0,25 mm.]. If bac k lash d oes n ot fall w ithin
sp ec i ficat ion s, s hi ms sh ou ld be in te rc hang ed be -
tween the two different i al b ea ring shim p ac ks
un til co rr ect bac kla sh is obta in ed .
Not e : Ch ang in g t he posi tion of a .005" [. 12 7 mm.]
shim fr om one sid e to t he ot h er will cha ng e the
amou nt of b ac kla sh approxim ate ly .003" [.076
mm.].
Che ck rin g g ear for run o ut. A r ea din g in excess
of .0 06" [0,1 52 mm.] indi cate s a sprun g di ffe ren t ial
cas e, dirt bet we en the ca se and the gear, or loos e
ring gear sc rew s.
In order to assist in dete rminin g wh et h er t he gears
ar e prop e rl y adjust ed, wh en th e Pin io n and Ring
G ea r Gau ge Se t No . W - 99B , is n ot availabl e,
p
ain t th e bevel gear t eeth wi th r ed lea d or prussian
b lu e and t urn th e bev el g ea r so t he pini on will
make an
im pre ssion on t he teeth . Th e co rrec t
FI G. 256 DIF F ERE NTI AL BEA RIN G DRIVER
- --
J
F IG . 257 -INNER OIL SEAL INSTALLER
pro ce dur e to follow in th e eve nt of an unsatis -
fac t or y t oo th co ntact is shown in Fig. 260. After
the diff ere nti al has been assemb l.e d and a djusted ,
th e pini on sh a ft oil seal should be inst alled :
Remove the sleeve previousl y ins t alled in plac e
of th e univ e rsal joint yoke and install th e oil seal
with Tool W - 14 7 shown in Fig . 261 .
Inst all th e universal joint yoke with Flang e In -
stalling Tool W -162 , as describ ed in Par. N-10 .
205