12. Verify that the response has the correct
parameters.
13. Type
ZAP
to restart/reinitialize the system.
4.6
Elevation Motor and Belt
Replacement
The elevation motor is mounted to the inside of the elevation
drive assembly support frame. Machine screw/washer sets hold
the drive motor in proper position to maintain proper tension on
the toothed drive belt. When adjusting belt tension or changing
the belt, do not remove the screws from the motor side, only
loosen the external screws on the belt side. Figure 4-8 shows the
arrangement of motor, drive belt, and antenna pulley.
4.6.1 Drive Belt Removal and Replacement
1. Loosen (2) #8-32 x
5
⁄
8
" screws until the motor is free
to move upward. Raise the motor to the top of the
slots and retighten the screws to hold it there.
2. Roll the belt over the motor hub while slowly
moving the antenna reflector through its vertical
travel. Work the belt out from between the antenna
pulley and reflector.
3. Carefully work the new belt in between the
antenna pulley and the reflector. Ensure that the
teeth are on the inside of the belt. Feed the belt
over the motor hub. Once the belt is in place, work
it back and forth to ensure that the belt is aligned
and the teeth are engaged with the motor pulley.
4-9
Maintenance
54-0150 Rev. E
Figure 4-8
Elevation Drive Mechanism
Motor Screws
Drive Belt
Drive Motor
Pulley
