Removal and replacement of ADU modules
8-36 Chapter 8: Service & maintenance 99-145912-A
8..6.7.1 To replace the Elevation Motor and Encoder
To remove the Elevation Motor and Encoder, do as follows:
1. Open the service hatch.Switch off the power to the antenna on the
service switch.
2. Rotate the Antenna Pedestal so motor assembly and elevation belt
faces the service hatch.
Tools needed:
•TX20
• 4 x 150 mm Allen key
(located inside the service
door of the ADU)
• Acoustic frequency meter
Figure 8-36: Elevation motor and encoder, loosen the belt tensioner