TM 11-5840-281-35/1
gear on transition (80) with minimum backlash
(33) With gasket (17) in place and with gear (12)
and without binding.
and ring spacers (13), held in their ultimate position in
relation to gear (23), simultaneously press mounting
(18) Attach switch (31) and switch actuator (32)
plate (72) into position over bushing (19) and slide gear
to bracket (33) using two screws (27), lockwashers (28),
(12) and ring spacers (13) onto gearshaft (21).
flat washers (29), and locking strip (30).
(34) Secure mounting plate (72) to housing (99)
(19) Attach bracket (33) to bracket (58) using
using four screws (14), lockwashers (15), and flat
two screws (24), lockwashers (25), and flat washers (26).
washers (16).
(20) Attach switch (41) and switch actuator (42)
(35) Mesh gear (12) and gear (23), adjusting
to bracket (43) using two screws (37), lockwashers (38),
both gears along gear shafts until fully meshed with
flat washers (39), and locking strip (40).
minimum backlash and without binding.
(21) Attach bracket (43) to bracket (58) using
two screws (34), lockwashers (35), and flat washers (36).
NOTE
(22) Install two nuts (47), lockwashers (48), flat
Add or remove ring spacers (13) as necessary to
washers (49), and setscrews (50) on bracket (58).
obtain the desired mesh of gears (12 and 23).
(23) Attach motor (54) to bracket (58) using four
screws (51), lockwashers (52), and flat washers (53).
(36) Loosen setscrew (73) then remove collar
(24) Attach two cams (46) to motor shaft using
(74) and waveguide (75).
screws (44) and lockwashers (45).
(37) Using screwdriver inserted in gear end of
(25) Attach gear (23) to motor shaft using two
motor shaft, turn shaft so that transition (80) rotates in
setscrews (22).
ccw direction, as viewed from transition end toward horn
end, stopping when centerlines of longer rectangular
NOTE
dimension of transition (80) and horn (85) are aligned.
Cams (46) and gear (23) should be loose on
motor shaft.
NOTE
This alignment is critical. Use a straight edge
(26) Attach terminal board (67) to mounting plate
between the two points to check exact
(72) using two screws (64), lockwashers (65), and flat
alignment. This places the waveguide in the
washers (66).
linear polarized position.
(27) Attach terminal board (71) to mounting plate
(72) using two screws (68), lockwashers (69), and flat
(38) Determine which cam (46) and stop
washers (70).
setscrew (50) is associated with linear limit switch S9302
(28) Assemble terminals (60), bushing (61),
(41), then position cam on motor shaft until it rests firmly
connector (62), and cable (63) into cable assembly (59),
against setscrew.
if necessary.
(39) Adjust stop setscrew (50) until straight side
(29) Attach cable assembly (59) to mounting
of cam (46) is parallel with lip of bracket (58).
plate (72) with bushing (61).
(40) Tighten cam (46) at this position on motor
(30) Attach bracket (58) to mounting plate (72)
shaft using screw (44) and lockwasher (45).
using two screws (55), lockwashers (56), and flat
washers (57).
NOTE
(31) Refer to schematic for azimuth antenna,
The cam lock screw (44) will be accessible
and connect wires from cable assembly W9301 (59),
through a hole in the lip of bracket (58).
motor B9301 (54), switch S9301 (31), and switch S9302
(41) to terminal board TB9301 (67) and TB9302 (71).
(41) Adjust linear limit switch S9302 (41) by
(32) Loosen setscrews (11) and remove gear
moving switch bracket (43) until it just actuates against
(12) and ring spacers (13) from gearshaft (21).
cam (46).
5-11
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