Paragraphs 287-302A
ALLIS-CHALMERS
1.
Oil seal
2.
Brake drum
3.
Axle housing
4.
Ball bearinsr
5.
Axle shaft
6. Bearing collar
7.
Retaining set screw
9. Differential carrier
oil
Sfal
Fig,
ACl3^-Exploded view
of
O
rear axle shaft, housing and brake drum unit.
ing.
Remove brake pedal return spring
(3_Fig. AC130), and bolt from gas
tank support. Remove the four nuts
retaining axle housing to transmission
case and withdraw axle and housing
assembly. Reinstall in reverse order.
287.
AXLE SHAFT, BRAKE DRUM
OR BEARING. To renew shaft (5—
Fig.
AC131), oil seal (1), or bearing
(4),
first remove axle shaft and hous-
ing unit from tractor. After unit is
off tractor, remove the two axle shaft
bearing collar retaining screws (7).
With a suitable puller or press, re-
move axle shaft from brake drum (2)
and housing (3). Press or drive the
bearing collar (6) from axle shaft. At
this time, the axle shaft bearing (4)
and oil seal (1) may be pressed off of
the shaft and renewed. Install treated
leather oil seal with the lip facing the
bearing. Install new bearing with the
shielded side facing the differential
unit and lubricate with chassis lubri-
cant. Axle shaft is retained in the
housing by the two retaining screws
and the press fit of the bearing collar
to the axle shaft. For this reason it is
advisable to renew the collar when
same is removed for either oil seal or
bearing renewal.
BRAKES
Models
B-C
300.
To adjust brakes on later pro-
duction tractors, turn adjusting screws
with a screwdriver inserted through
the slot of the brake compartment
cover. On tractors prior to Number
B52714,
it is necessary to first remove
the brake compartment cover and then
turn the adjusting nut with a wrench.
To remove brake band assembly
(37—Fig. AC134), remove fender and
brake compartment cover. Remove
brake pin retainer (30), spring (42),
adjusting nut (41), toggle (32), and
toggle pins (33). Pull brake band out,
bolt end first. To remove a brake drum,
it is necessary to first remove the ap-
propriate final drive unit as described
in paragraph 269 after which the drum
can be pulled from the bull pinion
shaft.
Model
CA
301.
To take up on brakes, turn ad-
justing screw (4—Fig. AC135) in until
a slight drag is obtained when rotating
wheel; then back off
^A
to % of a turn.
Do the same to the other brake.
302. R&R PLATFORM AND BRAKE
BAND.
To remove either brake band,
it is necessary to first remove the trac-
tor platform as follows: Disconnect
left wheel guard tail light wire at
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 set screw in hub of left pedal and
moving both pedals toward left side ot
tractor. Disconnect and remove rods
from brake bands. Remove tractor seat,
seat bar and shock absorber unit. Re-
move hydraulic lift quadrant and final
41 33 42
37 36
K
12
7
Fig, AC134-Models
B, and C
brake band
and
brake drum Installation
in the
tractor
final drive unit. Brake drum (36)
is
located
on the
bull pinion shaft.
K. Brake drum key
4.
Oil seal
5.
Snap ring
7.
Bull pinion
9.
Shims
10.
Bearing retainer
12.
Final drive housing
30.
Brake pin retainer
31.
Brake lever
32.
Brake toggle
33.
Brake toggle pin
34.
Brftke fulcrum pin
35.
Set screw
36.
Brake drum
37.
Brake band
40.
Pinion shaft plug
41.
Adjusting nut
42.
Brake band spring
drive clutch lever. Remove remote
ram connection from platform, loosen
platform retaining nuts and lift off the
platform. Remove wheel guard sup-
port.
302A. Raise rear portion of tractor
so wheels can be rotated. Remove
spring (3) and loosen adjusting screw
(4) five or six turns. Remove hairpin
locks (1) from the brake band
anchor pins then, using a drift punch,
carefully push anchor pin out toward
wheel. While slowly withdrawing the
drift punch, carefully remove the band
centering washers (7). If a washer is
dropped into the housing, it may be
necessary to R&R the final drive unit
before it can be retrieved. Remove
12
fig.
AC13S-Model
CA
brake installation
in
left final drive unit. Brakes can
be
ad/ifsN
ecf without removing
the
tractor platform,
1.
Hairpin locks 6. Toggle
3.
Spring 7. Band centering washers
4.
Adjusting screw 12. Brake lock
80
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