5.7
Elevation Motor and Belt
Replacement
The elevation motor is mounted to the inside of the support
frame. Machine screw/washer and stop nut sets hold the drive
motor in 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
nuts on the belt side. Figure 5-9 shows the arrangement of motor,
drive belt, and antenna pulley.
Replacing the Drive Belt
1. Using an
11
⁄
32
" nut driver, loosen the three #8-32
stop nuts until the motor is free to move upward.
Raise the motor to the top of the slots and
retighten the screws to hold it in place.
2. Roll the belt over the motor hub while slowly
moving the antenna reflector along its elevation
axis. 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.
54-0161
114
TracVision G6 Technical Manual
Figure 5-9
Elevation Drive Mechanism
Drive Belt
Pulley
Motor Screws, Washers
and Stop Nuts
Elevation Motor
Side View
Front View
Motor Hub
