User's Manual

Re place ment of Ro tat ing Joint (45-750-0034-001)
16 To replace the rotating joint, reverse the above procedure. Tighten and torque load the 12
antenna retaining bolts to 56 Nm and apply Loctite 222 on their threads during assembly.
Waterproof the coaxial joint to the antenna by sealing with a layer of greased plastic compound
such as Henleys compound or Denso-Tape.
Re moval of Gear box and Mo tor (55-100-0273-001)
17 To remove the gearbox, complete with motor, proceed as follows:
(1) Remove the antenna and rotating joint as described in paragraph 14.
(2) Remove and retain the six bolts securing the swing casting to the gearbox.
Remove and retain the swing casting.
(3) Using an Allen Key, remove and retain the six bolts securing the Mounting Disc
to the Gearbox and Motor. Remove and retain the Mounting Disc.
(4) Disconnect the electrical connections to the motor.
(5) Remove and retain the eight nuts securing the gearbox and motor to the enclosure
(these are located inside the enclosure under the gearbox.
(6) Lift the gearbox, complete with motor, from the casting.
Re place ment of Gear box and Mo tor (55-100-0273-001)
18 To replace the gearbox, reverse the above procedure.
Re moval of Az i muth En coder (GTX-A188)
19 To remove the azimuth encoder, proceed as follows:
(1) Unplug the rigid RF Coaxial cable from the transceiver. Remove and retain the
three bolts securing the rigid RF Coaxial cable to the rotating joint. Remove the
coaxial cable and the coupling element and retain. This allows the encoder to be
removed from the rotating joint.
(2) Unplug the Azimuth Encoder flying lead from the housing cableform (located in
the top of the housing).
(3) Remove and retain the three bolts securing the rotating joint to the RF coaxial
cable.
(4) Unscrew the flange from the base of the rotating joint.
(5) Remove and retain the two screws securing the Azimuth Encoder to the casting.
(6) Slacken the three grub screws securing the azimuth encoder to the gearbox and
carefully remove the Azimuth Encoder, ensuring the cable is not damaged.
Re place ment of Az i muth En coder (GTX-A188)
20 To replace the azimuth encoder, reverse the above procedure.
KH1262
Chap ter 6
Is sue 2 Page 6.13