Heathkit AR-14 - Page 33

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( )
Mount the circuit board to the center panel
by inserting the tuner shaft through hole AJ.
Then fasten the circuit board to the center
panel and support panel with seven 4-40 x
1/ 4" self-tapping screws and #4 lock-
washers. Be careful not to overtighten these
screws; this Mtlld §tr1p the threads in
the panels.
Refer to Detail 17B for the following steps.
"-r ) Turn the assembly over and mount a #6
solder lug at AK. Use a #6 x 1/4" sheet
metal screw.
r-+--Mount a 4-lug terminal strip at AL with a
6-32 x 1/ 4" screw, two #6 lockwashers,
and a 6-32 nut.
Page 25
~6-32x1 / 4" SCREW
Detail 178
Refer to Detail 17C for the following steps.
( ) Locate the alignment plate, gear mounting
bracket, short shaft, and drive gear.
( ) Position the alignment plate over the tuner
shaft. Then fasten it at AN with a #6 x
1/4" sheet metal screw.
( ) Apply a small amount of silicone grease to
the following places: To the drive gear teeth,
around the shaft on each side of the gear,
and around the tuner shaft at the hole in the
alignment plate. See Detail 17C.
( ) Start an 8-32 x 3/16" setscrew in the
drive gear. Then slide the gear onto the
shaft. Position the gear 3/ 4" from the end
of the shaft and tighten the setscrew.
( ) Install the gear at AP. Then mount the
gear mounting bracket over the gear and
fasten it with #6 x 1/ 4" sheet metal screws
at AR. Position the gear bracket so the
gear is not tilted before tightening the
screws.
~
0 TUNER SHAFT
. LIGNMENT PLATE
APPLY SILICONE GREASE
, '. ti 6x1 / 4" SHEET
METAL SCREW
(.) 8 -3 2x3 / 16"
tJ:t~l? rr--- S E TS C R E W
X '~.,_ ----DRIVE GEAR
.......... <!N""~
~ ' - · ---_ \ SHORT SHAFT
APPLY - ------- , r<::, .
S~~IE\Ot/ --_.Y~"y~
~ I -~
~/1 /'<--.___~n6xl / 4" SHEET
I
GEAR MOUNTING
BRACKET
Detail 17C
-~ l(JIMETAL SCREW
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