ALLIS-CHALMERS
Paragraphs 203-206
bump shaft forward. As shaft and front
bearing cone and cup are withdrawn
from front of case, gears and rear
bearing cone can be removed through
side of case. Rear bearing cup is posi-
tioned in bore of case by snap ring
(27).
To remove rear bearing cup, re-
move oil cup (28) from rear of case
and bump bearing cup forward.
Reassembly is reverse of disassem-
bly. Insert mainshaft through front of
case and install gears on shaft as fol-
lows:
Third speed gear (20) with long
part of hub toward the rear; second
speed gear (21) with long part of hub
toward the front; then bearing spacer
(gear spacer) (25). Install rear bear-
ing cone in cup and hold in place with
first speed gear (26) installed with
long part of hub toward the front,
then push mainshaft through first
speed gear and rear bearing con^.
Select shims (10) between front bear-
ing retainer and case to permit shaft
to revolve freely with no play. Re-
moving shims reduces play.
203.
COUNTERSHAFT (BEVEL
PINION). The combination counter-
shaft and bevel pinion (29—Fig. AC88)
is supported on two tapered roller
bearings and is sold separately from
the mating bevel ring gear. Counter-
shaft can be removed after first dis-
connecting the torque tube from trans-
mission as outlined in paragraph
42
1
185,
and removing differential as out-
lined in paragraph 241. Remove bear-
ing cap (37) and bearing adjusting
nut (38). Bump countershaft rearward
into differential housing and withdraw
shaft from housing, gears through side
of transmission case and front bearing
cone from front of transmission case.
Front bearing cup is positioned in
bore of the case by snap ring (36) and
can be driven out through front of
case.
Rear bearing cup is positioned
in bOFe of case by snap ring (30) and
can be driven out through rear of case.
Reassembly is reverse of disassem-
bly. Install rear bearing cone on coun-
tershaft and insert countershaft
through rear of case and install gears
on shaft as follows: First and reverse
sliding gear (31) with groove toward
the front; second and third sliding
gear (32) with groove toward the
rear; third speed constant mesh gear
(loose gear) (33) with small diameter
teeth toward the rear; locating washer
(34) with oil grooves toward gear;
then spring washer (35). Install front
bearing cone and tighten bearing ad-
justing nut until shaft revolves freely
with no play. Lock bearing adjustment
by flattening side of nut into groove
in shaft.
204.
REVERSE IDLER GEAR
SHAFT (9) can be removed after dis-
connecting torque tube from transmis-
36
35
33 3940 B 32 6131
30
B
60
29 59 28
B
V 58
AC90^Modef
CA
transmission shafts, gears
and
related parts^exploded view.
Shims
(2)
control adjustment
of
main shaft bearings. Shims
(39)
control adjustment
of
bevel pinion shaft bearings. Refer
to Fig,
AC97
for
legend
to
calf-outs
I
through
42.
B.
Bevel pinion ahaft lst. 56. Snap ring 62. Bushing (not available
2nd,
3rd,
&
4th gear 57. Spacer (short) for service)
bushinscs.
59. Splined coupling collar 63. Reverse idler gear
P.
Bushing pin 60. Spacer 64. Idler gear shaft
39.
Shims 61.
Reverse gear splined collar
65. Idler shaft lock
sion and removing differential and
transmission mainshaft. Remove cap
screw and lock plate (5). Withdraw
shaft from the rear and remove gear
cluster (8) and straight roller bear-
ings through side of case. A drilled
passage in the shaft provides lubrica-
tion for the bearings and is sealed at
the rear end by plug (6).
Reassembly is reverse of disassem-
bly. Install idler gear cluster with
large gear toward the front.
Model
CA
205.
BASIC PROCEDURES. The
transmission shafts, differential unit,
final drive bevel pinitn, and ring gear
are carried in the one transmission and
differential housing, Fig. AC92. The
mesh position of the bevel pinion is
fixed and non adjustable. There are
infrequent instances where the failed
or worn transmission part is so lo-
cated that the repair can be completed
safely without complete disassembly
of the transmission. In effecting such
localized repairs, time will be saved
by observing the following as a general
guide:
Shifter Rails
and
Forks.
Shifter
rails and forks, which are located on
the transmission cover, are accessible
for overhaul after removing the trans-
mission cover.
Main Shaft. Main shaft bearings can
be adjusted with shims (2) located
between front face of transmission
housing and bearing retainer. Adjust-
ment can be made after detaching
transmission from torque tube as in
paragraph 185. Removal of main
shaft requires the additional work of
removing the PTO (accessory units)
housing from rear of transmission.
Bevel Pinion
Shaft.
Mesh position
of
bevel pinion shaft is non-adjustable.
Bevel pinion and shaft can be pur-
chased separately from the bevel ring
gear. To adjust the bearings or to re-
move the shaft, it is necessary to de-
tach the torque tube from the trans-
mission, and remove the differential
as outlined in paragraph 206.
Reverse Idler
And
Shaft.
Reverse
idler gear and shaft can be removed
after removing transmission cover and
detaching transmission housing from
torque tube. Bump shaft forward ana
out of transmission housing wall so
that the gear can be removed.
206.
R&R
TRANSMISSION.
Over-
haul of the complete transmission re-
quires the following: Drain transmis-
sion and differential compartments,
and accessory units housing. Block up
and support transmission housing and
torque tube separately. Disconnect left
fender tail light wire at the instru-
57
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