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POWER
liRAIN -
Disc Brakes and Secondary Sheaves
4-1-5
You are now ready
to
remove the
right-t1and
secondary
shaft housing. Use
a
hammer
and soft punch to tap the
right-hand housing
back out of the
cl1ain
case.
After
the housing
is
forced
back, you will
have
to
slip
the
chain and drive
sprocket off the end of the shaft in
order
to
completely
remove
the housing
.
Once
the
housing has been tapped loose,
then the housing
and
secondary sheaves can be ren1oved as a con1plete
assembly.
The gear
can
be
separated
frorn
the chain
and
placed with
the assembly
just
removed. Care
shou
ld
be
taken to
avoid
dropping
the drive
shaft
spacers
and
sl1im
into the
chaincase.
If a
machine has
secondary
shaft
st1ims
{some do not) they
should be reinstalled
in
their
original
positions.
/ '
,,
?"
/ \
\'
I
~
Fig. 4-5
4-1-6
This illustration
shows
the
entire secondary sheave assem-
bly removed and
assembled on
the
bench.
Normally this
should be the
extent of
disassembly,
but
if a problem
arises
in the
secondary sheaves
themselves,
then additional break-
down will be required. This
will be accomplished
by
first
removing the
roll
pin at the right-hand
end of the shaft.
The spring seat will
slip off
the
end of
the
shaft once the
roll pin has been removed.
The
spring will
also
sl
ide
off
since it is
held in
place only
by the spring seat. This would
complete the final disassembly
of the secondary sheave
assembly.
-
Fig. 4-6
4-1-7
When instal I
ing
tt1e
secondary
slid i
119
sl1eave
on
tt1e
secondary
st1af
t, first
l1ook one end of
tl1e
secondary
spri
1
19
on
the sliding
sl1eave, and ther1
l1ook
tl1e
o
lher end on Ll1e
spring seat
.
Turn
the
spring
seat
two
turns
(correspondir1g
to
two
pitches of
t l1e sliding sl1eave
tl1reads) clockwise.
Ther1 ir1sert the ball pin
i11to
tl1e
sprir1g seat
so
tl1at
it
will
be
locked
to
tl1e secondary
sl1af
t.
Fig
.
4-7
/
---
t
Fig
.
4-8
-
Fig.
4-9
-38-
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