Paragraphs 237-239B
ALLIS-CHALMERS
Models WD after 127007
&
WD45
This unit
has a
curved lever
and
helical
cut gears.
237.
BASIC PROCEDURE. Trans-
mission shafts, differential unit and
final drive bevel pinion and ring gear
are carried in the one housing. Over-
haul of any of the transmission shafts,
except the main drive shaft (trans-
mission clutch or input shaft), re-
quires removal of transmission as out-
lined in paragraph 231.
238.
R&R TRANSMISSION. Follow
procedure as outlined for model WD
prior 127008 transmission in para-
graph 231.
OVERHAUL. Data on overhauling
the various components of this model
are outlined in the following para-
graphs.
239.
SHIFTER RAILS, FORKS.
Shifter forks and rails are contained
in the transmission top cover as shown
in Fig. AC105B. Transmission cover
can be removed after removing bat-
tery, battery carrier and cover re-
taining cap screws. Method of check-
ing and overhauling the shifter forks
and rails is conventional.
239A. MAIN DRIVE SHAFT. This
is also the transmission clutch shaft
or input shaft (23—Fig. AC105A). To
remove and overhaul this shaft, pro-
ceed as outlined for model WD prior
127008 transmission in paragraph 233.
239B.
BEVEL PINION. Bevel pin-
ion shaft and gear is removed before
removing the countershaft. Remove
transmission assembly from the trac-
tor as outlined in paragraph 231, and
bevel ring gear and differential as-
sembly as outlined in paragraph 251.
Remove main drive shaft as outlined
in paragraph 233, and shifter cover
assembly from top of transmission.
Working through the differential com-
partment, remove 6 cap screws retain-
ing bevel pinion shaft bearing retainer
(3.) to transmission housing. Working
through transmission housing top cov-
er opening, remove snap ring (21)
from forward end of bevel pinion
shaft. Bump (or preferably push with
a portable hydraulic jack) bevel pin-
ion shaft rearward, together with
bearing cup and cones (4), and remove
gears, bushings, washer and thrust
washer out through top of housing.
Caution: The
first,
second,
and third
gears rotate on hardened steel hush-
ings (llA, llB
&
17). Each
hushing
is
Fig ACT05A—Arrangemenf
of
shafts, gears
and
related parts
in
model
WD
after 127007
and
WD45 transmission (second type).
Nut
(7)
controls bevel pinion shaft bearings adfustment. Thickness
of
snap ring
(44)
controls countershaft bearings adjustmenr. Snap
rings
5, 21 and 44) are
available
in
various thicknesses. Model WD45
is
similar.
1.
Bevel pinion
&
shaft
2.
Cap screw
3.
Bear
in
IT
retainer
4.
Bearing cup
&
cones
6. Snap ring
6. Lock washer
7.
Adjuatinff nut
8. Snap ring
9.
Washer
10.
Bushinspin
llA.
Bushing (large)
llB.
Bushing (large)
12.
1st gear (40 teeth)
13.
1st
&
2nd gear splined
collar
14.
2nd
&
reverse sliding
gear
(34 teeth)
15.
2nd gear (35 teeth)
16.
Thrust washer
17.
Bushing (small)
18.
3rd gear (31 teeth)
19.
3rd & 4th gear splined
collar
20.
3rd
&
4th gear splined
coupling
21.
Snap ring
22.
Pinion shaft pilot bearing
23.
Main drive (4th) gear &
shaft
24.
Bearing
&
snap ring
25.
Snap ring
26.
Snap ring
27.
Bearing cup (rear)
28.
Bearing cone (rear)
29.
Countershaft
30.
Reverse shaft lock
31.
Reverse shaft
32.
Reverse gear bushing
33.
Reverse gear
34.
1st gear (16 teeth)
35.
Spacer
i.9t}<}
wide)
36.
Reverse gear (18 teeth)
37.
Spacer (.654 wide)
38.
2nd gear (22 teeth)
39.
3rd gear (26 teeth)
40.
Spacer
41.
Drive gear (37 teeth)
42.
Bearing cone (front)
43.
Bearing cup (front)
44.
Snap ring
66
To Next Page
Loading...
