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Mounting the radio
assembly on the feed
support tube
2. Apply silicone grease to the O-ring groove in the feed horn.
3. Place the O-ring (0.9-inch inside diameter) in the groove.
Note: The O-ring is shipped in a bag that contains seven
socket-head cap screws for attaching the feed horn. Six screws
are required; one is an extra part.
Make sure the O-ring remains in the O-ring groove.
Figure 35: O-ring in groove
Use the mounting adapter to attach the radio assembly to the feed
support tube. Refer to Figure 36 as you follow these instructions:
1. Place the mounting adapter and radio assembly onto the feed
support tube.
2. Align the mounting holes in the base of the radio assembly,
mounting adapter, and feed support tube.
There are six holes on the top surface of the feed support
tube. Use the oval slot at the end of the tube and the second
hole from the bend in the tube, as shown in Figure 36.
3. From below, insert two
⁄
5
-inch lock washer and flat washer on each bolt) through
16
the feed support tube, adapter, and base.
Chapter 5 • Installing a cradle-type radio assembly
O-ring
⁄
-18 × 2.25-inch hex bolts (using a
5
16
1037312-0001 Revision A
45
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