Paragraphs 246A-251
AUrS-CHALMERS
2
4 3 5 7 8
DISC.
AFTER
TR
we-67327
lWF-353
1
1.
Carrier case
cap
2.
Diflferential
carrier
S. Differential case
4.
Differential case
cap screw
5.
Differential spider
6. Thrust washer
7.
Diflferential
pinion
8. Main drive rin?
gear
9. Bearing adjust-
ing ring
10.
Thrust washer
11.
Diflferential side
gear
ON
TR
WC-6732e
1 lWF-354
fig, AC112-Madels
WC, and Wf
bevil ring gear
and
di0erenfial
vnif assembly-rear view,
($)
Nuts
A
studs retaining differential
carrier
to
rear axle
housing^
drive units. Remove the axle hous-
ing from the differential carrier as
follows: Support rear of tractor frame
and detach rear axle housing from the
end of each frame side rail by remov-
ing bolts (B). Remove steering support
brace on WC, or steering gear and
platform on WF, and roll rear axle and
torque tube assembly backwards as a
unit until it is clear of the transmis-
sion. Support the torque tube and re-
move nuts (S—Fig. AC112) and pull
axle housing away from differential
carrier. The carrier bearing adjusting
ring nuts (9) are now accessible.
248A. Adjust bearings and gear
backlash by following the procedure
for the RC as given in paragraph 245A.
249.
R&R AND
OVERHAUL,
To
remove the differential from its carrier
on models with malleable iron axle
housing, follow the procedure given
for the model RC in paragraph 246.
On models with steel axle housings,
follow the procedure given in para-
graph 248.
With axle housing moved away from
differential carrier remove the carrier
bearing caps and lift out the ring gear
and differential unit.
To disassemble the differential, re-
move cap screws (4—Fig. AC112) from
case (3). To renew the case or carrier
bearings or bevel ring gear, proceed as
given for the model RC in paragraph
246B.
After differential is reinstalled
to carrier, adjust the bearings and
backlash by following the procedure
given for the RC in paragraph 245A.
Models WD-WD45
250.
BEARINGS
AND
BACKLASH
ADJUSTMENT. To adjust bearings
and gear backlash, it is necessary to
first remove both final drive units as
outlined in paragraph 283. Refer to
Fig.
AC113A. After final drive units are
removed from transmission, adjust the
bearings and backlash as given for the
models B, C, and CA in paragraph
240A.
251.
R&R AND
OVERHAUL. Main
drive bevel ring gear and differential
unit are carried in the transmission
housing rear compartment. To remove
the differential unit, proceed as fol-
lows
:
Drain transmission and differen-
tial housing. Remove brake shoes. Re-
move both final drive units from trans-
mission by removing cap screws at
transmission end of units. Unbolt pow-
er take-off shaft bearing carrier, and
remove power lift arms and shaft as-
sembly. Remove transmission housing
rear cover. Support ring gear and dif-
case caps (1) and remove differential
assembly.
246A, To disassemble differential,
remove pinion shaft lock screw (4)
and pull pinion pin (5) from differen-
tial case (3). Pinion gears (7), pinion
gear thrust washers, side gears (11),
and side gear thrust washers can then
be removed from differential case.
246B.
Differential bearing cones can
be pressed off differential case. Ring
gear is retained to differential case
with either rivets or heat-treated bolts
and nuts. Don't use ordinary bolts.
Preferred method of removing old
rivets is by drilling them out. When
riveting a ring gear to the case, use
cold rivets, and be careful to avoid
distorting the gear or the case. Run-
out of differential unit checked at back
face of ring gear should not exceed
.003.
After unit is reinstalled to car-
rier, adjust bearings and backlash as
outlined in paragraph 245A.
Models WC-WF
247.
BEARINGS
AND
BACKLASH
ADJUSTMENT, MODELS WITH
MALLEABLE IRON AXLE HOUS-
INGS.
To adjust bearings and gear
backlash on these models (on which
the final drives are not detachable as
complete units from the axle housing),
follow the procedure as given for the
model RC in paragraphs 245 and 245A.
On the WF, it will be necessary to also
remove the platform and steering gear,
248. BEARINGS
AND
BACKLASH
ADJUSTMENT, MODELS WITH
STEEL AXLE HOUSINGS.
To
adjust
bearings and gear backlash on these
models (on which the final drives are
detachable
at
N—Fig. AC122 from
the fig.
ACII3A-Modef
WD
showing dinerential unit bearing carrier when left final drive
axle housing), first r«move both final
unit
is
removed. Model WD45
is
similar.
72
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