TM 11-5840-281-35/1
lockwasher (105), and flat washer (106).
freely when waveguide (10) is in place.
(43) Position bracket (90) on housing (110), making
Remove 0.002-inch laminations from
sure spur gear (81) meshes fully with sector gears on
spacers (11) as required to obtain
transitions (16 and 17).
proper clearances.
(44) Secure bracket (90) to housing (90) using two
screws (85), lockwashers (86), and flat washers (87).
(29) Reposition transitions (16 and 17) in linear
(45) Position linear limit cam (48) so it is aligned to
polarized mode and secure in place with setscrews (23).
actuate switches (65 and 66) but resting against its stop
(30) Attach dc motor (55) to bracket (90) using four
setscrew (61).
screws (52), lockwashers (53), and flat washers (54).
(46) Adjust stop setscrew (61) until straight side of
(31) Slide spur gear (57) on dc motor shaft and
linear limit cam (48) is parallel with lip on bracket (90),
secure with pin (56).
then tighten Camloc screw (46).
(32) Install retaining ring (77) on shaft (89).
(33) Slide spur gear (81), spacer (82), and idler
NOTE
gear (83) on shaft (89) and tie together using three
Camloc screw (46) will be accessible
screws (78), lockwashers (79), and flat washers (80).
through a hole in the lip of bracket (90).
(34) Slide spacers (84) on shaft (89).
(35) Insert shaft (89) into bracket (90) and secure
(47) Loosen screws (69) and adjust spacer (72) to
with two setscrews (88).
make switches (65 and 66) just actuate against cam
(48), then tighten screws (69).
NOTE
(48) Using feeler gauge for measurement, back off
Remove 0.002-inch laminations from
stop setscrew (61) for 0.020-inch clearance between
spacers (84) as required to provide
setscrew and cam, then tighten nut (58).
minimum end play of gears when idler
(49) Remove two setscrews (23) and rotate dc
gear (83) is fully meshed with spur gear
motor shaft clockwise so transitions (16 and 17) will
(57).
rotate clockwise.
(50) Look through holes where setscrews (23) were
(36) Install two setscrews (61) in bracket (90) and
removed and continue rotating dc motor shaft until
loosely lock in place with nuts (58), lockwashers (59),
indentations for circular polarized position are centered in
and flat washers (60).
holes.
(37) Attach spacer (72) to bracket (90) using two
(51) Secure transitions (16 and 17) in circular
screws (69), lockwashers (70), and flat washers (71).
polarized mode with setscrews (23).
(38) Attach adapter (64) and switches (65 and 66)
(52) Position circular limit cam (51) so it is aligned
to spacer (72) using two screws (62) and lockwashers
to actuate switches (67 and 68) but resting against its
(63).
stop setscrew (61).
(39) Attach spacer (76) to bracket (90) using two
(53) Adjust stop setscrew (61) until straight side of
screws (73), lockwashers (74), and flat washers (75).
circular limit cam (51) is parallel with lip on bracket (90),
(40) Attach adapter (64) and switches (67 and 68)
then tighten Camloc screw (49).
to spacer (76) using two screws (62) and lockwashers
(63).
NOTE
(41) Slide cams (51 and 48) on dc motor (55) shaft
Camloc screw (49) will be accessible
and loosely attach with screws (49 and 46) and lock-
through a hole in the lip of bracket (90).
washers (50 and 47).
(54) Loosen screws (73) and adjust spacer (76) to
NOTE
make switches (67 and 68) just actuate against cam
Do not tighten screws (49 and 46) at this
(51), then tighten screws (73).
time.
(55) Using feeler gauge for measurement, back off
stop setscrew (61) for 0.020-inch clearance between
(42) Position gasket (108) and cover plate (107) on
setscrew and cam (51), then tighten nut (58).
housing (110) and secure in place using screw (104),
5-21
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