(4) Allow the antenna to rotate downward
handles in a closed position. Exercise
(slowly) until it comes to rest against the bumper on the
care to release the locking pins before
attempting to raise the handles.
(5) Unlock, release, and remove the quick-
release pins which hold the lower end of the actuator to
(4) Unlock, release, and remove the quick-
the front leg assembly. Remove the actuator.
release pin which secures the actuator support trailing
(6) Replace the actuator by performing steps
arm to the elevation drive ring.
(1) through (5) above in the reverse order.
b. Removal of the Cross-Elevation Actuator (fig.
Maintain control of the antenna and
actuator during this procedure to
prevent damage to the equipment.
Use two persons for this task, otherwise,
personal injury and/or damage to the
(5) Remove the quick-release pin which
equipment may result. Do not attempt
secures the other end of the actuator support trailing arm
this task if winds exceed 40 mph (64
to the inside of the right elevation gimbal shaft assembly.
(6) Remove the actuator (with attached
support trailing arm).
(1) Disconnect the cable from the actuator.
(7) Install the stow bar by attaching one end of
(2) Relieve any strain on the actuator by
it (using quick-release pin) to the bracket on the inside of
the right elevation gimbal shaft assembly.
(3) Unlock, release, and remove the quick-
(8) Replace the actuator by performing steps
release pin which holds the actuator rod end to the
(1) through (7) above in reverse order.
antenna center section. Maintain control of both the
c. Motor-Brake Tachometer Removal (fig. 5-27).
actuator it will be necessary to remove the actuator from
the antenna (refer to para a or b above). After the
actuator is removed proceed as follows to remove the
The quick-release pins are equipped
with automatic locking pins to hold the