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13. Using a 9/64-in
.
hex
wrench,
remove
the
socket-head cap screws securing the ramps
to the movable sheave.
Fig. 4·18
3.
Inspect the ramp sett
in
gs on
the
ins
id
e of
the
movab le sheave for
wear
and cracks.
4.
Inspect the spring
for proper compression
qualities. Spring
compression
must
be
within
the
range of 123-137
Ib
@
2.187 in.
5.
Inspect
the
ramps for any
uneven
wear pat-
tern.
6.
Inspect all threaded areas for any cracked or
stripped threads.
7.
Inspect the hex shaft; no burrs
or rough
edges
are
to be
evident. Use a fine fi le
to
remove any
burrs or rough edges. Thorough
ly
clean and
dry the hex
shaft if any
filing was done.
8.
Inspect bushing for any cracks
or
excess ive
A975
gouging.
II
NOTE: A complete set of ramps must be
in-
stalled even
if
only one ramp
is
worn or
damaged_
CLEANING
1.
2.
Us
ing
parts-cleaning
so lvent,
wash grease,
dirt,
and foreign matter off all parts. Dry the
parts with compressed air.
If
drive be
lt
dust
accumulatio
n
is present on
the stationary sheave or on the movable
sheave Duralon bushing, remove the ac-
cumulation using parts-cleaning
solvent
only
.
•
CAUTION
•
DO
NOT use
steel wool or a wire
brush
to clean
components
having
a
Ouralon bushing;
damage
will
result if
bushing
is
contacted with
the
steel
wool or a wire
brush.
INSPECTING
II
NOTE: Whenever a part
is
worn excessively,
cracked, defective, or damaged
in
any way,
replacement is
necessary_
1.
Inspect
stationary
sheave,
movable
sheave,
and
housing
for cracks
and
imperfectio
ns
in
the
castings.
2.
Inspect the
spider for cracks and imperfec-
tions in the casting. Arms, weights,
and
rol lers
must not be damaged or worn.
REPLACING BUSHINGS
Drive clutch bushings can
be rep
laced
using the
Bushing
Installation
Tool
(pIn 0644-006)
and
the
following
instructions:
Removing Outer Cover Bushing
1.
Using a 3/32 in. hex wrench, remove the three
set
screws that
lock
the hex bushing to
the
cover.
Fig. 4·19
2.
Turn
the clutch cover over
and set
it
into the
sleeve support.
3.
Using
the hex shaft driver,
drive or press
the
hex
bushing
down
and
out.
65
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