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3.3.4 Installing the PSR/SSR Interface Mount (174050) to the top of the reflector.
Refer to Figure 3-6 and Table 3-8.
The SSR Mount is provided with 7/8" slotted mounting holes in the base to allow for an azimuth
adjustment of +1-1 degree. Along with the slotted holes there is a central azimuth pivot hole in the
base. Ensure that the elevation adjustment struts, pivot brackets and elevation turnbuckle (supplied
with the SSR) are installed on the SSR Mount.
Table 3-8
PSR/SSR Interface Mount and Tilt Scale Bracket Installation Materials (part of 174265 Hardware Kit)
Item Part Number Description Qty.
PSR/SSR Interface Mount Installation Materials
1. 174240-4 Bolt & Nut Assy. (7/8-9 x 3.0) 8
2. 9974-188 Washer, lock (7/8) 10
3. 517-0009-01 Washer, flat (7/8) 10
4. 9963-770 Bolt (2-13 x 2.5) 1
5. 9997-28 Washer, flat (2) 2
6. 9974-4 Washer, lock (2) 1
7. 9999-160 Nut, Hex (2-13) 1
8. 174240-1 Bolt & Nut Assy. (7/8-9x3.5) 2
Tilt Scale Bracket Installation Materials
9. 175157 Tilt Scale Bracket 1
10. 9963-75 Screw (1/4-20 x 3/4) 3
11. 9997-42 Washer, Flat (1/4) 3
12. 9974-15 Washer, Split (114) 3
13. 9999-57 Nut (1/4-20) 3
14. 9963-86 Screw (5/16-18 x 1-1/4) 2
15. 9997-74 Washer, Flat (5/16) 4
16. 9974-17 Washer, Split (5116) 2
17. 9999-59 Nut (5/16-18) 2
a. Using the crane, attach sling and tag lines to the PSR/SSR Interface and lift into
position on top of reflector using the azimuth pivot pin (item 4) to guide the structure into place.
Install the four outermost sets of 718" hardware (items 1, 2 & 3) but do not tighten at this time. The
hardware is not tightened until the SSR antenna is installed and the SSR boresight has been aligned
with respect to the PSR boresight. After alignment tighten the 7/8" hardware to 430 foot-pounds.
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