Heathkit SB-1000 - Page 39

Heathkit
NOTE: Handle the variable capacitors in the nexttwo 1’)
steps carefully. Be careful not to bend the plates.
/
()' Refer to Detail 6-6A and use 10-32 brass nuts to
mount #10 solder lugs onto the indicated studs of
the load variable capacitor at CJ and CK. Be sure to
position each solder lug as shown before you
tighten the nut. NOTE: This capacitor has more
closely-spaced plates than the other variable
J capacitor.
/
a y C31: Refer again to Detail 6-6A and mount the load
variable capacitor to the center panel. Use 6-32 x
5/8" hardware at CD and 6-32 x 3/8" hardware at
CE. Tighten the hardware only finger tight at this
, time.
() Refer to Detail 6-6B and use a 10-32 brass nut to
mount a #10 solder lug onto the indicated stud of
the plate variable capacitor at CN. Be sure to
position the solder lug as shown before you
tighten the nut.
y Refer to the inset drawing on Detail 6-6B and use
the following procedure to prepare a spade bolt/
wire lug combination:
ly Refer to Part 1 and carefully break off the flat
portion of a 6-32 spade bolt.
2. Refer to Part 2 and remove the sleeve froma
Y #10 wire lug. NOTE: You may have to use a
vise, or something similar to hold the lug
while you cut off the sleeve.
vy Push the threaded portion of the spade bolt
through the wire lug as shown. Then solder
the bolt to the lug.
() Refer again to Detail 6-6B and use a 10-32 brass nut
2 to mount the spade bolt/wire lug combination to
theindicated stud of the plate variable capacitor at
CR. Be sure to position the lug as shown before
you tighten the nut.
id C26: Refer again to Detail 6-6B and turn a 6-32 nut
as far as possible onto the end of the 6-32 spade
NY bolt. Then slide a #6 lockwasher onto the bolt and
use a 170 pF doorknob capacitor to secure it.
Finally, use a 6-32 x 3/16" screw to mount a #6
solder lug onto the doorknob capacitor as shown.
ancuesy 2
Page 41
(C27: Refer again to Detail 6-6B and use 6-32 x 3/8"
hardware to mount the plate variable capacitor
and a 4-lug terminal strip to the panel at CB, and
only 6-32 x 3/8" hardware at CC. Tighten the
hardware only finger tight at this time.
Set the center panel assembly aside until it is called for
ina step.
FRONT SUBPANEL
Refer to Pictorial 6-7 while you perform the following
steps.
Y “ Position the front subpanel as shown in the Pic-
_ torial.
/
77) Position a lamp clip so the end tabs are toward the
left as shown at SA in the Pictorial. Then refer to
Detail 6-7A and start the longer tabs into subpancl
holes SA. Use pliers to bend the tabs toward each
other and down against the panel enough to hold
the clip in place.
w Similarly install lamp clips at SB, SC, and SD. Be
sure the end tabs of each clip are positioned as
shown in the Pictorial.
NOTE: Be sure to mount the solder lugs in the next three
steps so the bent portion is toward the front subpancl.
These solder lugs will be used to hold the meters in place
later.
§) _ Refer to Detail 6-7B and use 6-32 x 5/8" hardware
and a 5/16" spacer to mount a #6 solder lug to the
subpanel at SE. Be sure to position the solder lug as
shown in the Pictorial before you tighten the
hardware.
i Similarly use 6-32 x 5/8" hardware and a 5/16"
spacer to mount a #6 solder lug to the subpanel at
SF.
Refer to Detail 6-7C and use 6-32 x 5/8" hardware
and a 5/16" spacer to mount two #6 solder lugs
anda 1-lug terminal strip to the subpanel at SG. Be
sure to position the solder lugs and the terminal
strip as shown in the Pictorial before you tighten
the hardware.