PTO
HORSE
MOOEl
TECHNICAL
MANUAL
Page
5-8
4/90
SECTION
5:
PTO
Power
Unit
Transmission
thickness
as
the washer (8). Using
a shim that is the same thickness
as
the washer will prevent any
warping
of
the washer.
11.
Using a mallet, install a bear-
ing (7) flush with the right side
housing bore. Then use the pinion
bearing retaining plug (2)
as
a
driver and seat the bearing,
washer, and shim flush against the
fast speed pinion gear.
12.
Make sure the fast and slow
speed pinion gears are flush
against the worm gear.
13.
Make sure the bearings are
flush against their respective
gears.
14.
Line up the spirol pin hole on
the right side retaining plug with
the hole in the housing.
15.
Center the
worm
gear. Use
the drive shaft opening at the front
of the
PTa
power
unit
to
sight and
center the gear. If the gear
is
not
centered, tap the appropriate
retaining plug inward until the
gear
is
centered (hold the
oppo-
site plug
firmly
in place when driv-
ing a plug inward).
16.
Repeat the previous
two
steps until the
war
ar is cen-
tered
as
you
vie
it
hrough
the
opening in the fran
of
the
PTa
power unit.
17.
With the worm gear centered,
push inward on the
two
retaining
plugs and check
to
see if the
spiral holes in the plugs and the
housing are aligned. If a plug
is
not
seated deeply enough, tap it
in
until the holes are aligned. If a
plug
is
seated
too
deeply, remove
it and insert
one
or
more shims (4)
until the holes are aligned.
18.
Install
a-rings
(3)
on each
plug (2).
19.
Use #30 weight oil
to
lubri-
cate the
a-rings
and insert the
plugs on each side.
dr
·f(
13
~
+3 I
+ 2
1
Figure 5-7: Wheel Shaft Assembly. I
20.
Install the spiral pins
(1)
on
each side.
21.
With the wheel drive clutch in
neutral,
try
to
spin the bronze
worm gear. It should turn easily,
driving the
two
cast iron wheel
gears
as
it turns. If the gear does
not spin freely, strike the plugs
(2)
inward with a rubber hammer.
This should free-up the pinion
shaft assembly. If the gear still
does
not
spin freely, it is shimmed
too
tightly.
\.
Wheel Shaft
Assembly
These instructions describe
how
to
service the wheel shaft assem-
bly. For instructions on
how
to
remove the wheel shaft
without
disassembling the entire
PTa
power unit, see "Removing the
Wheel Shaft
Without
Disassem-
bling the Transmission" in
Section
7.
Use Figure 5-7 as a reference
for
part locations in these
instruc-
tions. '
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