Paragraphs 273-276
8
S 10
fig.
ACII9-Moclef
CA
finol drive assembly-exploded
view.
The
final drive unit
on the
right side
of
PTO equipped models differs from
the
left side
in
that
it has a
two-piece
bull pinion (differential) shaft
(2)
(outer only shown)
the
pieces
of
wfiieh
are
connected
and disconnected
to
each other
by a
Lambert clutch. Right unit bull pinion shaft
for
models
not
equipped with PTO
is
similar
to the
left bull pinion shaft
(7),
1.
Woodruff key
3.
Oil
Beal (difT.
carrier)
4.
Oil seal
5.
Snap ring
9. Shims
&
gaskets
10.
Bearing retainer
11.
Pinion oil tube
12.
Final drive hsg.
13.
Dust
cap
14.
Cap Bcrew
15.
Washer
16.
Shims
18.
Snap ring
19.
Snap ring
20.
Bull gear
21.
Gear spacer
22.
Snap ring
24.
Oil seal
25.
Wheel axle shaft
273.
RENEW BULL PINION SHAFT,
BEARINGS.
OR
BRAKE DRUM.
The
final drive unit on the right side of
pto-equipped models differs from the
left side unit in that it has a two-
piece bull pinion shaft the halves of
which are connected and disconnected
to each other by a Lambert clutch.
This clutch, which disconnects the en-
gine from the final drive, permits pow-
er to be applied constantly to the pto
even when the tractor is motionless
with respect to the ground.
To remove right side or left side bull
pinion shaft, it is necessary to first
remove the appropriate final drive as
a unit, as outlined in paragraph 274.
With final drive unit off the tractor,
the overhaul procedure for the left side
unit of a pto-equipped tractor or for
either side of tractors not equipped
with pto is the same as on models B
and C, as outlined in paragraph 268A.
For the right side final drive, the
procedure when same is off the tractor
is as follows: Remove inner pinion
shaft (41—Fig. AC129) from final drive
clutch by withdrawing it with the
hands.
Remove snap ring (53) retain-
ing the clutch unit to the outer shaft
(2) and then press or pull the clutch
from the shaft. Remove the Woodruff
key (1) from the shaft; also the outer
bearing retainer (10—Fig. AC119) and
ALLIS-CHALMERS
shims (9). The outer shaft can now be
bumped out of the housing. The inner
bearing cup (6) and housing oil seal
(4) can now be renewed. Be sure tOj
renew the oil seal (3) located in the
differential carrier bearing housing on
the transmission, if inner shaft shows
oil leakage. The lip of this seal should
face inward; lip of the seal in final
drive housing should face outward.
When unit is reassembled, adjust the
bull pinion shaft bearings so that
shaft rotates freely without any per-
ceptible end play by varying the
shims,
(9) interposed between the final
drive housing and pinion shaft bear-
ing retainer.
274.
R&R
FINAL DRIVE UNIT.
To
remove one or both final drive units,
proceed as follows: Drain housing and
support rear portion of tractor under
the transmission housing. Disconnect
left wheel guard tail light wire at the
instrument box. Disconnect pedal shaft
by removing clevis pin from clevis on
left hand brake rod. Disconnect right
hand pedal from its linkage by loosen-
ing setserew in left pedal hub and
moving both pedals toward left side of
tractor. Disconnect and remove rods
from brake bands. Remove tractor seat,
seat bar, and shock absorber unit. Re-
move both wheel guards, rockshaft and
supports, and hydraulic lift control
quadrant. Remove platform and tire
and wheel unit. Disconnect hydraulic
ram from final drive housing which is
to be removed. Remove nuts retain-
ing final drive housing to transmission
housing and withdraw unit from trac-
tor.
Models RC-WC-WF
Some RC and WC tractors are
equipped with steel rear axle hous-
ings.
These tractors are designated by
a letter "S'* after the serial number
and can be identified by examining
the outer end of the axle tube. The
axle tube of a steel axle housing is
attached to the final drive or brake
housing by nuts (N) and cap screws,
as in Fig. AC
122,
whereas the axle
housing and final drive housings are
integral in the malleable iron type.
275. ADJUST WHEEL AXLE BEAR-
INGS.
Support tractor and remove hub
cap.
Turn adjusting nut (16—Fig.
AC123) in until all bearing play is
eliminated, but without binding the
bearings.
276.
RENEW WHEEL AXLE,
BEARINGS OR BULL GEAR. To re-
move bull gear (14), support tractor
under frame and remove rear wheel.
Cork seal (13) can be removed from
76
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