Paragraph
313
ALLIS-CHALMERS
23
48 24
MS.
13.
15.
16.
17.
19.
20.
23.
24.
30.
35.
37.
40.
41.
42.
43.
44.
50.
51.
52.
,
Transmission mainshaft
Accessory units drive
gear shift lever
Accessory units drive
gear
Snap rinK
Roller bearing
Shims & gaskets
PTO shaft
Accessory units driven &
belt pulley drive gear
Shims
Bearing retainer
Snap ring
Snap ring
Washer
Detent ball
Detent spring
Seal
Shift finger
Oil seal
Detent retainer
Oiling tube
fig. ACI5I-Model CA accessory units housing showing power take-off
and
hydraulic pump
and belt pvllay drive shaft
ond
related parts.
21
33
53 54 31 31 34
22
36
55
45
fig.
AC 152—Model CA accessory units housing showing belt pulley shaft
and
related parts.
21.
Belt pulley shaft
22.
Shims
31.
Snap ring
32.
33.
34.
Belville washer
Oil seal
Oil slinger
36.
Pulley shaft gear
45.
Adjustins nut
46.
Retaininsnut
bearing
cup
shims
and
snap ring will
remain
in the
housing.
If
this
cup is
removed
for any
reason,
be
sure
to re-
tain
and
mark
the
shim
or
shims
lo-
cated between
the cup and the
snap
ring. Remove
nut
(45—Fig. AC152)
and shims from inner
end of
belt
pul-
ley shaft. Bump belt pulley shaft
out
through side
of
housing
and
with
it,
the
oil
seal
(33)
outer bearing cone
and shims
(22).
Bearing cups
can now
be removed from
the
housing.
313.
During reassembly, observe
the following points:
Belville spring washers
(32)
should
be assembled
to
belt pulley shaft with
cupped face
of
outer
one
facing
out-
ward
and
cupped face
of
inner washer
facing inward.
Belt pulley shaft bearings should
be
adjusted
by
means
of nut (45) to a
preload
of 7-10
inch pounds
to
rotate
shaft when
pto
shaft
is out of
housing.
Lip
of oil
seal should face inward.
If
pto
shaft front bearing
cup was
removed,
be
sure
to
reinstall
the
same
shims (24—Fig. AC151)
as
were
re-
moved from between
it and the
snap
ring.
After
pto
shaft bearings have been
adjusted
to
free rotation with zero
end
play, observe mesh position
of pto
bevel gear
in
relation
to
bevel gear
on belt pulley shaft.
The
heel faces
of
both should
be
flush with each other
within .006 when
the
backlash
of mat-
ing teeth
is
within
the
limits
of .004-
.007.
If
backlash
is
less than
.004, re-
move
a
shim
(24)
from
the
belt
pul-
ley shaft
or add a
shim
if
backlash
is
greater than .007.
If
heel faces
are not
within
.006 of
being flush with each
other after correct backlash
has
been
obtained,
it
will then
be
necessary
to
53.
Bearing (outer)
54.
Spacer
55.
Bearing (inner)
change
the
position
to the pto
gear
by
removing
or
adding shims
(24). If
this
must
be
done
do so by
removing
the
front bearing snap ring
(35) to
avoid
the longer
job of
disassembling
the
pto shaft.
POWER TAKE-OFF UNIT
Models RC-WC.WD-WD45.WF
This data applies only
to the
Power
Take-off unit Refer
to
paragraphs
310
and
310A for
repair data applying
to
Belt Pulley used
on
these models.
There
are
detailed differences
in the
construction
of the pto
used on
m,odels
RC, WC, and
WF,
as compared
to mod-
els
WD, and
WD45,
and
between
the
pto used
on
model WD prior
to
tractor
serial WD-2400
and
later WD tractors.
The accompanying illustrations. Figs.
AC154 & AC155, show
any
necessary
variations
in
repair procedure.
86
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