TM 11-5840-281-35/1
(17). Install cover (44) over four studs (43)
(12) Connect connector P107 from cable
using nuts (37) and lockwashers (38).
as- sembly W3501 (27) to connector J107 on receiver-
(18) Remove four nuts (45), screws (46),
transmitter group.
lockwashers (47), and flat washers (48).
(13) Connect connector P1003 from cable
(19) Remove azimuth antenna drive (49)
as- sembly W3502 (28) to connector J1003 on azimuth
from radar set group.
antenna drive.
b. Replacement. To replace azimuth Antenna
(14) Connect connector P108 from cable
Drive T-113/TPN-8, proceed as follows:
as- sembly W3502 (28) to connector J108 on receiver-
(1) Position azimuth antenna drive (49)
transmitter group.
against support tube and secure in place using four nuts
(45), screws (46), lockwashers (47), and flat washers
3-54. Removal and Replacement of Elevation Servo
(48).
Actuator
(2) Remove four nuts (37), lockwashers
(fig. 343)
(38), and cover (44) from studs (43).
a. Removal. To remove the elevation servo
NOTE
actuator, proceed as follows:
(1) Disconnect connector P1002/P504 from
Leave preformed packing (41) on open receiver-
J504 on elevation antenna drive.
transmitter group waveguide.
(2) Release two clamps holding elevation
servo actuator cable to elevation antenna yoke.
(3) Install dehydrator (42) in adapter (40).
(3) Remove pin holding elevation servo
(4) Attach adapter (40), preformed packing
actuator to elevation antenna.
(41), and directional coupler (39) to open receiver-
(4) Remove pin holding elevation servo
transmitter group waveguide using four nuts (37) and
actuator to elevation antenna yoke.
lockwashers (38).
(5) Remove elevation servo actuator (50)
from elevation antenna.
NOTE
b. Replacement. To replace the elevation servo
actuator, proceed as follows:
Wire rope assembly from cover (44) should be
(1) Position elevation servo actuator (50)
secured under one of the nuts (37).
between clevis on elevation antenna and clevis on
elevation antenna yoke.
(5) Attach flexible waveguide (35) and
(2) Secure elevation servo actuator (50) in
prefrrmed packing (36) to directional coupler (39) using
place with pins provided.
four screws (33) and lockwashers (34).
(3) Secure elevation servo actuator cable to
(6) Attach elbow waveguide (31) and pre-
elevation antenna yoke with two clamps provided.
formed packing (32) to flexible waveguide (35) using four
(4) Connect connector P1002/P504 from
screws (29) and lockwashers (30).
elevation servo actuator cable to connector J504 on
(7) Release waveguide coupler on azimuth
elevation antenna drive.
antenna drive and remove cover from waveguide.
3-55.
Removal and Replacement of Elevation
NOTE
Antenna AS-1291/TPN-8 and Yoke
(fig. 33)
Preformed packing should be left on waveguide
when cover is removed.
a. Removal. To remove elevation Antenna AS-
1291/TPN-8 and yoke, proceed as follows:
(8) Attach elbow waveguide (31) to azimuth
(1) Disconnect connector P505 from J505
antenna drive using waveguide coupler.
on elevation antenna drive.
(9) Remove connector covers from
(2) Release waveguide coupler at both
connectors J1001 and J1003 on azimuth antenna drive.
ends of waveguide (51).
(10) Remove connector covers from
connectors J107 and J108 on receiver-transmitter group.
(11) Connect connector P1001 from cable
as- sembly WS601 (27) to connector J1001 on azimuth
antenna drive.
3-58
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