ALLIS-CHALMERS
Paragraphs 277-279
gear cover at this time by removing
retaining nuts. Remove gear cover
(11),
hub cap, and bearing adjusting
nut (16). Slide gear and hub bearings
off wheel axle shaft (9). Wheel axle
shaft can be driven out of rear axle
housing (7) after removing lockscrew
(8).
Hub bearing cups can be driven
out of drive (bull) gear hub. Seal jour-
nal on gear hub is provided with re-
verse threads to assist in retaining
lubricant. Do not interchange left and
right gears as threads will then cause
leakage of lubricant.
fig, AC122--Models RC, WC,
and WF
differential
and
final drive housing construction.
Top view-One-piece malleable iron differential
and
final drive housing. Bottom
view--
One-piece stamped steel differential
housing
to
which the final drive
housings
are
bolted
on
the
outer ends.
Tractors
equipped with steel type
housings
have
a
letter "$" follow-
ing
the
tractor serial number, liefer
to
Figs,
AC 123
&
AC 124.
11
277.
RENEW BULL PINION SHAFT,
BEARINGS,
OR
BRAKE DRUM.
To
remove bull pinion shaft, support trac-
tor under frame and remove bull gear
as outlined in paragraph 276. (On
shafts having a removable pinion (15—
Fig. AC123), same can be pulled from
the shaft after removing the retaining
nut.) Remove gear cover back plate
(10) and brake housing cover (1—Fig.
AC138). Loosen brake band adjusting
nut (2) and extract shaft by prying
outward with a bar placed between
brake drum and brake compartment
wall. The brake drum can be pressed
or driven off the shaft after removing
set screw (13). Remove brake drum
key (5) and bearing cage (2—Fig.
AC123). Bull pinion shaft bearing can
be pressed or driven off the shaft after
removing snap ring (3).
278.
R&R
FINAL DRIVE UNIT.
On
tractors with malleable iron rear axle
housing, the final drive is not remov-
able as a unit. On models with steel
rear axle housing, remove nuts and
cap screws (N—Fig. AC124) attaching
the brake housing to the rear axle tube
and remove the entire unit from rear
axle housing.
Models WD.WD45
279.
ADJUST WHEEL AXLE BEAR-
INGS. Adjust bearings to a .002 pre-
load with shims (15—Fig. AC125) in-
terposed between wheel axle shaft re-
taining cap screw washer (14) and
inner end of shaft.
16
18
Fig, AC123-Models RC, WC, and WF equipped with
a
final drive
assembly
of the
malleable iron type. Refer
to
Fig, AC 124
for
steel type final drive construction,
1.
Bearing retainer
6.
Bull pinion
&
shaft
2.
Pmion shaft bearing
7.
Final drive hag.
„ cage
8.
Axle lock screw
8. Snap ring
9,
Wheel axle shaft
4.
Oil seal (outer)
10.
G€ar cover back plate
6.
on
seal (inner)
13
Fig, ACI24-Fjnol drive assembly
of
tractors equipped with
a
stamped steel type differential
housing,
"N"
is
one
of
the nuts
attaching
the
final drive
housing
to
the differential housing,
II-
2r^^
^"^^^.
16-
Bull gear retaining nut
12.
Hub oil seal retainer
17.
Hub cap
J3.
Seal
19.
Pinion gear key
14.
Bull gear
&
wheel hub
18.
Wheel
15.
Bull pinion
20.
Bearing spacer
21.
Spring washer
77
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