Andrew ES73 manual Step

Step 9

Step 10

Step 11

Step 12

Step 13

Step 14

Prior to installing panels 15 and 16 station a man on top of the drum assembly enclo- sure to install panel seam hardware. Care must be taken not to apply heavy weight to surface of panel segments.

Note that there are 16 panel segments each with 21 bolt holes numbered 1-21 from the center out which form concentric rings around the inside of the reflector as shown in Figure 53. Beginning with the center flash panel (segment 1) tighten all panel seam hardware corresponding to bolt hole ring 11, located above reflector tee segment/back strut assembly connection. Continue tightening ring 11 reflector seam hardware working counterclockwise.

Figure 53

Tighten panel seam hardware along rings 10 and 12 simultaneously beginning with panel seam 1.

Tighten panel seam hardware along rings 9 and 13 simultaneously beginning with panel seam 1.

Tighten panel seam hardware along rings in pairs simultaneously beginning with rings 14 and 15 working toward the outside of the reflector to seam hardware ring 21.

Tighten panel seam hardware along rings in pairs simultaneously beginning with hard- ware rings 7 and 8 working toward the inside of the reflector down to seam hardware ring 1.

42 Installation Procedures