Heathkit SW-717 Assembly page 39

+
( )
Refer
to
Detail 24A and
place the
small metal pulley
on the
shaft
of
variable
capacitor
G with the
closed
face
of
the pulley toward the
subpanel
and
the
open
space
in the rim of
the pulley
at the six
o'clock
position.
Position
the pulley
so
its
hub
just
clears the
subpanel, and
tighten the
setscrew.
( )
Refer
to
Pictorial 24 and
wind the 17'3/8" dial cord
once around
the pulley
tongue so
that the tab at
one
end
of the dial cord
is
positioned at
S as
shown.
BANDSPREAD
IUNING
SPRING
8-32
x 3l]L6
SETSCRE!V
PICTORIAL
24
Refer
to Pictorial 24 for
the
following
steps.
( )
Rotate
the
variable capacitor clockwise
as
far
as
possible.
( )
Start
an 8-32
x
3/16"
setscrew
into
the tapped hole in
the hub of the
small
metal pullev.
Wind the other end
of the dial
cord3l4 turn
clockwise
around
the pulley
and
then up and over N
and
R.
Attach the end loops
of
the
bandspread
tuning spring
to
the
two dial cord
tabs,
()
()
( )
Turn the shaft
of
the
bandspread
tuning
capacitor
through its
range
with your
f
ingers.
The
two
dial cord
tabs should
just touch R
and S
at
each
end
of
the
range.
lf
necessary,
loosen
the
setscrew
in the pulley
and rotate
the
pulley to
adjust the travel
of the
dial
cord
tabs,
( )
Refer
to
Detail 24B and install the bandspread
tuning
pointer
on
the dial
cord. Then slide
the pointer to
the
left on the dial cord until the
edge
of the pointer
is
1/8" from
tlre
edEe
of the
pulleY.
FIRST
PASs
THE
tINE
CORD
THROUGH
THE
DIAL
POINTER
OPENING.
IHEI\ tOOP
THE
DIAt
CORD
ONCT AROUND
THE
DIAt
POINTTR AND
PASS
IT
THROUGH
THT
OPIIiING AGAII'I
OPE[] ING
D
I
AL
_--?
CORD
Detail 24B
NOTE:
lf
the pointer
does
not
stand up
straight,
it
is
because
the dial cord
is
twisted. Slide
the pointer
back
and
forth
along
the dial
cord
several
times
until
the position
is
corrected.
BANDSPREAD-
TUNING POIIiTtR
SA'1AtL
NIETAt
PULLEY
VARIABLI
CAPACIiOR
SHAFT
SMALL I\lTTAL
PULLEY
Detail 24A