Feed Strut Assembly - Andrew ES45T Installation, Operation And Maintenance Manual

Andrew installation, operation and maintenance 4.5-meter earth station antenna es45t
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Step 2
Position white surface of center pad toward feed window and attach pad to center plate
using supplied ¼ x 1-½ in. nylon screw, flatwashers and nuts. Install flatwashers under
both screw head and corresponding nut as shown in Figure 64. Tighten mounting hard-
Feed Strut
ware allowing only slight compression (0.060" max.) of center pad material. Use remain-
Assembly
ing nylon nuts as locknuts and distort excess screw thread to prevent disassembly.
Step 1
Loosely attach corresponding feed strut brackets (P/N 49694/49695) to concave side of
reflector at points B, C, E, and F as shown in Figure 65.
Use A-325 ½ x 1-¼ in. bolts, flatwashers and nuts. (see page 12)
Insert bolts from concave side of reflector
Step 2
Pass feed struts (P/N 221491-1) to installer underneath for attachment to feed strut
brackets.
Use 3/8 x 2-¼ in. bolts, lockwashers and nuts
Secure feed struts together at center after attachment to feed strut brackets
You have now completed the assembly of the ES45T-T-1 reflector. The next step in the
installation is the assembly of the back structure, which begins in the next section.
ES45T-T Reflector Assembly
49694
Feed Strut
Bracket
49695
Feed Strut
Bracket
Feed Struts
(align over setting
54
Allen
Wrench
Feed
Strut
Feed
Struts
49694/49695
Feed Strut Brackets
B
C
Front View
Figure 65
Installation Procedures
3/8 x 2-1/4"
Bolt,
Lockwasher
Side View
49695
Feed Strut
Bracket
F
49694
Feed Strut
E
Bracket
Secure Feed
Struts Together

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