Removal and replacement of ADU modules
99-145912-A Chapter 8: Service & maintenance 8-65
8.6.14 To replace the rotary joint
To remove the rotary joint do as follows:
1. Open the service hatch.
2. Switch off the power to the antenna on the service switch.
8.6.15 To replace a wire-rope isolator
Replacing a wire rope isolator is a critical operation for the ADU. Read
the instructions below carefully before starting the procedure. Do not
skip any steps.
You may want to read about inspecting the wire-rope isolators, see
Inspection of wire-rope isolators in the section Inspection of
mechanical components on page 8-69.
Figure 8-84: Rotary joint
Tools needed:
•TX20
• 4 x 150 mm Allen key
(located inside the service
door of the ADU)
Figure 8-85: Wire-rope isolator in good condition
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