Paragraphs 309B-310A
309B.
BEVEL DRIVE GEAR
AND
HOUSING.
To
renew
the
bevel gear,
Fig. AC147, which drives
the
pulley
shaft gear,
or to
overhaul
any
part
of
the drive shaft,
it is
necessary
to re-
move
the
drive (larger) housing from
the tractor clutch housing. Removal
is
accomplished
by
disconnecting
the hy-
draulic unit hose lines
and
external
control linkage,
and
unscrewing
the
12
3 4
5
6 7
1.
Snap rins
2.
Pulley carrier tube
3.
Set screw
4.
Main frame •
5.
Belt pulley
6. Ball bearing (outer)
7.
Oil seal
8. Pulley retaining nut
9.
Snap ring
10.
Tube cover
11.
Tube seal
12.
Belt pulley shaft
14.
Snap ring
15,
Ball bearing (inner)
15
14 13 12 11
10
9 8
Fig. ACI48-A1ode/ WO belt pulley assembly. Models RC, WC, WD45 * Wf or*
Mimilar.
13
21
B6
35 2425
23
34
fig.
AC149A-Model CA acc«ssory unitg fbe/f
pulhy,
power
toke-oW,
and hydraulic Hit
pump)
housing,
which is attached to the rear face of the transmission
housing.
BG.
Main drive bevel ring gear
& differential unit
MS.
Transmission main shaft
TH,
Transmission housing
13.
Accessory units drive gear
shift lever
14.
Hydraulic lift punip
15.
Accessory units drive gear
16.
Snap ring
17.
Roller bearing
18.
Snap ring
19.
Shims
20.
PTO shaft
21.
Belt pulley shaft
22.
Shims
23.
Accessory units driven &
belt pulley drive gear
24.
Shims
25.
Differential unit
&
bull
pinion shaft
30.
Bearing retainer
31.
Snap ring
32.
Belville washer
83.
Oil seal
34.
Oil slinger
35.
Snap ring
S6.
Pulley shaft gear
ALLIS-CHALMERS
cap screws which retain
the
housing
to
the
clutch housing.
OVERHAUL. Procedure
for
disas-
sembly
of the
removed unit
is as fol-
lows:
Remove pulley
and
shaft unit,
and pump body
(20)
retaining
cap
screws. Remove pump gears (25 &
34)
and gear key from drive shaft (7).
Re-
move shifter lever detent spring
(28)
and ball
(31).
Remove drive shaft
bearing
cap (1) and
shaft
nut (3).
Working through housing opening,
bump ball bearing
(4) out of
housing
and
off
shaft. Remove shifter collar
(5)
and
pins
(6) out
through bearing
opening. Move shaft
and
gears toward
bearing opening until opposite
end is
freed from roller bearing
(8). Tip
shaft slightly
and
withdraw through
mounting face opening. Roller bear-
ing
(8) can now be
removed from
housing.
Helical drive gear
(22)
rotates
on a
presized bronze bushing
(17),
which
should
be
renewed when
the
running
clearance exceeds
.006.
When reinstalling
the
drive shaft
housing unit
to the
tractor clutch
housing, check backlash
of
drive heli-
cal gear with
its
driving gear
in
clutch
housing.
If
backlash
is not
within
lim-
its
of
.004-.007, vary
the
thickness
of
the gasket
(16) to
obtain this desired
backlash.
To overhaul
the
hydraulic pump
at
this time, refer
to
paragraph
328 for
procedure.
Models RC-WC-WD-WD45-WF
The data
in
paragraphs
310 and
310A apply
to
only
the
Belt Pulley,
Refer
to
paragraphs 314 through 314B
for repair data applying
to the
Power
Takeoff used
on
these models.
310.
GEAR ADJUSTMENT.
A
series
of radial holes (13—Fig. AC148)
pro-
vides
a
means
of
obtaining
the
recom-
mended .005-.011
(Vs
inch movement
of pulley
rim)
bevel drive gear back-
lash. Rotate belt pulley tube counter-
clockwise
to
reduce backlash.
310A. OVERHAUL.
To
remove belt
pulley unit, loosen
set
screw (located
on clutch housing)
and
withdraw unit.
To disassemble belt pulley unit,
re-
move pulley retaining
nut (8) and
pulley. Remove snap ring
(1)
from
gear
end of
belt pulley tube,
and
bump shaft
out of
tube.
Install
new oil
seal
(7) of
treated
leather with
the lip
facing
the
gear.
The inner ball bearing
(15)
which
takes thrust should
be
installed
in
one
of the
following ways: Install
bearings which
are
stamped
"THRUST"
on
inner race
so
that
the
mark faces
the
gear; install bearings
84
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