TM 11-5826-225-35
(c) Remove four screws (20) and four
( 4 5 ) , and remove spur gear (43)
nuts (17) securing connector (21)
from shaft of helical gear (52).
Note. If setscrews (44) cannot be reached,
to retaining plate (8).
the tuning gear train must be disassembled
(d) Remove retaining plate (8).
(e above).
(f') L o o s e n setscrews (71) and (75)
(7) Loosen two setscrews ( 127) on collar
on collars (72) and (76), respec-
(128), and remove spur gears (121,
tively.
123) from the shaft of transmitter
(f) Pull out stop hub assembly (57),
synchro (156).
along with five stop washers (59,
(8) Remove collar (128).
61, 63, 65, and 67) and five flat
washers (58, 60, 62, 64, and 66),
(9) Loosen the three screws ( 155) located
from the rear of frame (136).
around transmitter synchro (156) at
(g) Remove two collars (72 and 76),
the shaft end.
flat washer (70), and worm gear
( l 0 ) O r i e n t three rim-clinching clamps
(73).
(153) to permit removal of trans-
(h) Loosen the two setscrews (78) in
mitter synchro (156) and remove the
collar (77), and remove the collar
transmitter synchro (156).
(77).
g. Removal of Dial Drum.
(i) Remove dial drum lever (81) from
(1) Set the range switch to 190-400.
the frame (136).
(2) Remove the front panel (a above).
(j) R e m o v e s p r i n g ( 5 5 ) f r o m t h e
(3) Remove two screws (132), two lock-
grooved pin in the frame (136).
w a s h e r s (131), two flat washers
(k) Remove detent follower (56) from
(134), and remove dial mask ( 135)
the frame (136).
from frame (136).
(1) Withdraw switch detent (82) from
(4) Loosen two setscrews (35) on collar
the rear of the frame (136).
(37).
i. Removal of Lanpholder for Dial Lamps
(5) R e m o v e spur gear assembly (30),
(DS307, DS308) .
load spring (31), spur gear (32), and
(1) Set the range switch to 190-400.
retaining ring (33) from the top of
(2) Loosen two Dzus fasteners (1) lo-
frame (136).
cated on the rear cover (2), and slide
(6) Remove dial drum (41) from frame
the rear cover (2) off the control unit.
(136) using care not to distort spring
(3) Remove wire clamp (147), terminal
(40).
lug (148), and lockwasher (149) by
h. Removal of Range Switch (S304).
removing screw (152).
(1) Remove the front panel (a above).
Note. Terminal stud (150) may be used in
(2) Remove two screws (87), two non-
place of screw (152) on some control units.
metallic screws (86), two lockwashers
(4) Remove two screws (34), and remove
(85), and remove switch section (84).
lamp bracket (29) from the frame
(136).
(3) Remove two spacers (83).
(5) Two lamps (27) are removed from
(4) If it is desired to remove switch de-
lamp bracket (29) by rotating elec-
tent (82) and detent followers (56),
trical clamp (26) around the tubular
perform the following procedure:
rivet (25).
(a) Remove three screws (5) and three
lockwashers (6) securing retain-
3 - 6 . Reassembly and Lubrication of Control
ing plate (8) to frame (136).
Unit
(b) Remove fixed resistor (12) from
r e t a i n i n g plate (8) by removing
a. General. Lubrication of the control unit
screw (7).
is included in the following reassembly pro-
3-13
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