Heathkit HR-10B - Replacements

Page 28
2-1/2 TURNS
Detail 5A
( ) Locate the dial cord and tie a loop in one
end,
approximately 1" from the end. Place
this loop over the tab on the dial drum as
shown in Detail 5A.
( )
Referring to Detail 5A, finish stringing the
dial cord on the dial drum, dial back plate
assembly, dial drive shaft, and the dial pulley
assembly. Tie the dial cord spring on the
dial cord. Cut off any excess cord length.
Attach
the free end of the spring to the dial
drum.
( ) Install the large knob on the MAIN tuning
shaft. Rotate the MAIN TUNING capacitor
fully counterclockwis·e. Place the dial cord
through the fingers on the bottom of the
dial pointer. Holding the tuning capacitor
plates closed slide the pointer on the
dial cord until it is 1/8" to the left (as
viewed
from the front panel) of the 3. 5 me
calibrating mark. Secure the pointer to the
dial cord by squeezing the fingers on the
cord. Be careful not to cut the cord.
( ) Referring to Detail 5B, starttwo6-32x1/4"
screws in one of the shaft couplers. Place
one end of this coupler on the shaft of the
variable capacitor at FM. Tighten the set-
screw.
( ) Place one end of the 1-7/8" extension shaft
through the ANT TRIM hole in the front
panel and into the open end of the shaft
coupler. Tighten the setscrew. The e·hd of the
shaft should extend 3/8" beyond the front of
the panel.
( ) Start two 6-32 x 1/4" screws in the re-
maining shaft coupler and secure one end
to the variable capacitor shaft at FN. ·
Detail 5B