Hughes AN6-098P General instructions for assembling the antenna, Fastener, Maximum, torque

General instructions for assembling the antenna

In this manual, installation software refers to installation, pointing, and commissioning software accessed through the IDU, which works in conjunction with SBC.

Before proceeding, use the installation software to determine the initial values to use for setting azimuth, elevation, and polarization. Record these values and keep them handy for reference as you install and point the antenna. To use the installation software, follow the instructions in the IDU installation manual for commissioning the IDU.

Before you assemble the antenna, read these important instructions:

•Mast – The mast must be installed before you can install the antenna. For information on antenna mounting methods, see the HN System Antenna Site Preparation and Mount Installation Guide (1035678-0001). The mast must have an outside diameter of 2-3⁄8inches (2.375 inches).

•Sequence of steps – When you assemble the antenna, follow the instructions in this chapter in the order they are presented.

•Tightening hardware– Do not tighten any nuts or other hardware until you are instructed to do so. (See also the next item, Torque.)

•Torque – To ensure successful installation of the antenna, you must tighten all nuts and socket-head cap screws to the maximum torque values shown in Table 6. This is a critical requirement.

Table 6: Torque specifications

Fastener	Maximum
	torque

¼-inch bolts	6 ft-lb
5/16-inch bolts	15 ft-lb
¼-20 thread-cutting screws used to	10 ft-lb
secure reflector bracket to reflector
No. 6-32 and M4 socket-head cap	15 inch-lb
screws

For bolts that use a split lock washer, tighten the bolt until the washer is flattened, but do not tighten the bolt further. When the washer is flattened, this indicates that sufficient torque has been applied.

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Chapter 3 • Assembling the antenna 1037312-0001 Revision A