TM 11-5826-225-35
ends of load spring (122) into the
(124) through the front of the bear-
ing located on the lower left edge of
retaining holes in spur gears (121 and
frame (136) as viewed from the
123) .
front.
(6) Place collar (128) on the shank of
spur gear (123), and tighten two set-
(7) Continue to insert the shaft of switch
screws (127) only as much as neces-
detent (124) through the shaft slots
sary to retain collar (128) on the
of switch sections (139 and 140). Seat
the shank of spur gear (123).
switch detent (124) against the bear-
ing on frame (136).
(7) With collar (128) towards frame
(136), slide the two spur gears (121
(8) Place the notch of detent follower
and 123) onto the shaft of transmit-
(125) on the lower left-hand grooved
ter synchro (156) only as far as nec-
pin on frame (136) with notch open-
essary to engage spur gear (121) with
ing facing left, as viewed from the
spur gear (120).
front.
(8) As viewed from the bottom of frame
(9) With the wheel of detent follower
(136), rotate spur gear (123) eleven
(125) in a detent of switch detent
teeth clockwise and engage spur gear
(124), connect spring (126) between
(123) with spur gear (120).
rivet of detent follower (125) and the
grooved pin on the front of frame
(9) Tighten two setscrews (127).
(136).
(lo) If there are not other parts to be re-
( l o ) Slide spring tension washer (145)
placed, perform alignment procedures
over the shaft of spur gear assembly
(146).
f. Replacement of Function Switch (S302).
(11) Insert the shaft of spur gear assembly
(1) Orient switch section (139) so the
(146) as far as possible through the
side with the X mark is facing the
bearing and the shaft of switch detent
same direction as the front of frame
(124) from the rear of frame (136).
(136), and the X mark is towards the
(12) Place retaining ring (141) in the slot
top. The notch in the shaft slot of
around the shaft of spur gear assem-
switch section (139) should be at the
bly (146).
left as viewed from the front.
g. Replacement of Attenuator (R301).
(2) Orient switch section (140) the same
as switch section (139) is oriented.
(1) If the function switch is removed, re-
place it (f above).
(3) Use two spacers (137) to separate
switch sections (139, 140) from each
(2) If variable attenuator (166) is not
other, and two spacers (138) to sepa-
connected to leads, make the connec-
rate switch sections (139 and 140)
tions now.
from frame (136).
(3) Place lockwasher (165) on mounting
(4) Use two screws (142), two lockwash-
shank of variable attenuator (166),
ers (143), and two nonmetallic
and insert the shank of variable atten-
washers (144) to secure switch sec-
u a t o r (166) through the mounting
tions (139 and 140) and spacers (137
hole in frame (136).
and 138) to frame (136).
(4) Secure variable attenuator (166) to
(5) A p p l y a small amount of MIL-L-
frame (136) with lockwasher (164)
7870 oil to the inner surface of the
and nut ( 163).
bearing located on the lower left edge
(5) Place crown gear (162) on the shaft
of frame (136) as viewed from the
of variable attenuator (166) so crown
front.
gear (162) meshes with the spur gear
on spur gear assembly (146).
(6) I n s e r t the shaft of switch detent
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