Powermatic 45 - Belt Adjustment and Headstock; Step Cone Belt Tensioning; Headstock Spindle Removal

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NTENANCE
I NSTR
UCT|OIJ,
cont,d
BELT ADJUSTMENT,
VARTABLE
SpEED
DRtVE.
cont,d
iable
speed
belt is
slightly
tight. Raise
the
bracket
about
1/1G"
and lock
in
place.
Adjust
the
adjusting
screw
in,
while
rotating
the
spindle
until
the
belt
shows
a tendency
to
move
in
from
the
outside
diameter
of
the upper
sheave.
Lock
the
adjusting
screw
in
place.
Adjust
the
motor
base with
its
adjusting
screw
to
tension
the vee
belt
between
the lower
variable
speed
countershaft
and
the motor'
lt may
be
necessary
to
raise
the motor
base
in
order
to raise
the lower
countershaft.
Belt
wear
or
stretch
will
make
belt
adjustment
necessary periodically.
To change
the variable
speed
belt,
the
headstock
spindle
must
be removed.
See
section
on Headstock
for
spindle
removal.
-l\
B
As
shown
in Figure
4,
the
belt
is released
and
ten,
sioned
through
use
of a
belt
tension
cam
operat-
ed from
the front
of
the
machine.
Open
the head-
stock
cover
and
cabinet
door
for
better
visability.
Swing
the lever
down
to
the lower
position.
Check
the belt
tension.
lf it
is
not
enough,
check in
what
hole
the
pin
is located
on
the
tension
arm.
lf it
is
in a
position
other
than
the
bottom
position,
pull
out
the
pin
and
allow
the motor
to drop
down.
Raise
the
tension
arm
until
the
pin
will
go
in
the
next
hole
and reinstall
the
pin.
Swing lever
to
lower
position
and
check for
proper
tightness
of
the
belt.
lf
the
pin
is in
the lower
hole,
the motor
base
pin
supports
will have
to be
lowered.
Loosen
the two
setscrews
holding
the
pins
allowing
them
to
slide down
lowering
the
motor.
Relock
the
two
setscrews.
NOTE:
When
a
new
belt
is installed,
it may
be necessary
to
raise
the
pin
supports for
the
motor
base
and move
the
pin
in
the
tension
arm.
When
replacing
a belt,
it
will be
necessary
to
par-
tially
remove
the headstock
spindle from
the head-
stock.
See
section
on Headstock
for
spindle
removal.
Fig.
4
T
HEAD
STOCK:
Figure
5
shows
a sectionalview
of the variable
speed
headstock
and
Figure
6 shows
the
same
view
of
the step
cone version.
FIG.5
VS.
Fis.
5
-.