Removal and replacement of ADU modules
99-145912-A Chapter 8: Service & maintenance 8-39
6. Loosen the 15x4 mm Allen screws (the 3 Allen screws on top are
longer than the rest) on the cover over the azimuth drive modules,
and remove the cover (lift and slide).
7. Loosen the belt tension device by loosening the 4x4 mm Allen screws
(thread size M5).
Figure 8-41: Azimuth motor, remove cover
Figure 8-42: Azimuth motor, loosen the belt tensioner