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Heathkit SB-220 - Page 31

Heathkit SB-220
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Page 26
LUG
OF
SLEEVI
NG
(4
Install a 5/16" rubber grommet
at
F.
(
r/i
Refer to Detail 4-1H and position the relay (#69-55)
with its lugs to the right as shown. Unsolder and
discard the black insulated wire between lug
7
and the
movable arm.
NOTE: When you solder the small metal braid in the
following steps, use the minimum amount of heat necessary
to secure a good connection.
IMPORTANT:
Disregard any lug numbers stamped on the
relays; refer to the steps and the illustrations for the correct
lug numbers.
(4
Replace the wire discarded in the previous step with a
3-114" length of small metal braid that
is
folded in the
middle and pushed through a
1" length of black
sleeving. Solder one end of the braid wires to relay lug
7
and the other end to the relay movable arm.
/
(4
Refer to Detail 4-1J and position the relay with its
lugs to the left. Unsolder and discard the black
insulated wire between lug
9
and the movable arm.
Replace the wire discarded in the previous step with a
4" length of small metal braid that
is
folded in the
middle and pushed through a
1-318" length of black
sleeving. Solder one end of the braid to lug
9
and the
other end to the movable arm.
Refer to Detail
4-1K and mount the relay through
grommet
F.
Use
a
6-32
x
11/16" screw and two
#6
fiber shoulder washers. Do not overtighten this screw.
The rubber grommet
is
used to provide resiliency.
f&#6'i.l BER SHOULDTR
I
WASHER
$f-32
x
111~6" SCREW
f
Detail
4-1
K
(
)
Inspect the relay to make sure that neither piece of
metal braid can possibly touch the metal frame of the
J
relay.
(
Refer to Detail 4-1
L
and mount the 4-screw terminal
strip
at
AE.
Use two 6-32
x
318" flat head screws, two
112" flat washers, two 6-32
x
314" tapped metal
spacers, and two 6-32
x
114" binder head screws.
9
6-32x114'' SCREW
TERMINAL STRIP

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