ES45T-R Reflector Assembly Step Feed Strut Assembly

ES45T-R Reflector Assembly

Step 9

Step 10

Step 11

Step 12

Step 13

Feed Strut Assembly

Step 1

Step 2

Shim each location as required to level the reflector (see Figure 31).

Continue to measure around antenna again, recording the height of each location mea- sured. As before, shim the low location points to be at the same elevation as the highest measured location.

Continue to measure, record, compare and shim any low temporary support location points until all (6) temporary location points are within 0.030 inches [0.75 mm] elevation from each other.

Recheck the shim stacks required for leveling the reflector to ensure they are properly positioned and are adequately supporting the reflector. Note: As work continues on the reflector it is essential that the shim stacks remain in position through out this process. Also ensure that diameter setting bands are taut and evenly tensioned. If not, check to ensure proper leveling of temporary supports.

With the reflector level, tighten joining plate (P/N 49425) hardware starting at the outer perimeter of match marked position A-A and continue this procedure around reflector in concentric circles while progressing inward toward reflector vertex. Note: Near vertex area, it may become necessary to push down on mounting ring hub to narrow segment gap before tightening hardware.

Figure 32

Installer underneath reflector should attach four of each feed strut brackets (P/N 49694/49695) as shown in Figure 32.

•Use A-325 ½ x 1-¼ in. bolts, flatwashers and nuts (see page 12).

•Insert bolts from concave sides of reflector

Pass feed struts (P/N 49703) to installer underneath for attachment to feed strut brackets (P/N 49694/49695).

•Use 3/8 x 2-¼ in. bolts, lockwashers and nuts

•Secure feed struts together after attachment to feed strut brackets as shown in Figure 32

You have now completed the assembly of the ES45T-R-1 or the ES45TDR reflector. The next step in the installation is the assembly of the back structure, which follows in the next section.

30	Installation Procedures