Andrew ES73 manual 221345 X 2-1/4 57 mm

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Step 7

Step 8

Step 9

Attach 221345 azimuth pivot assembly to 201408 beam assembly with a line of RTV around the plate and four 7/8 x 2-1/4 in (57 mm) holts inserted from pivot assembly to beam assembly as shown in Figure 33. Note: Use one 7/8 by 2-3/4 inch (70 mm) bolt, flat washer and nut for later attachment of grounding cable.

221345

7/8 x 2-1/4”

(57 mm)

Figure 33

Note: If optional motor drive system is included, install motors at this point. Refer to installation instructions provided with motor kits.

Refer to Figure 34. Position hoisting ropes on motor/jack assembly so jack will not roll when hoisted. Attach one rope to large motor frame next to gearbox to balance assem- bly; do not attach rope to small motor. Tie up loose conduit before lifting jack.

Figure 34

Raise 221923/223180 azimuth jackscrew and attach 221738 pivot assembly to 201273 joint assembly with 1 x 2-1/2 in (63 mm) hardware. Note: Mounting position of azimuth pivot jackscrew assembly is dependent upon azimuth range requirements and corre- sponds with mounting position of 201488 outrigger plate or extension assembly.

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Installation Procedures

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Contents Meter ESA Table of Contents Meter Earth Station Antenna IntroductionProprietary Data Information and Assistance Technical Call From Call To Telephone FaxOverview Content How to Use This ManualOverview Getting StartedRecommended Tools Tool Size QuantityGetting Started Returning Equipment Step Installation Procedures Overview Foundation PreparationTensioning Step 1b A-325 Tensioning For bolts over four diametersTripod Ground Mount Assembly Azimuth Beam Step Support Legs Assembly Step 201315 Supports Step Panning Frame Assembly Step Step 201316 Supports 201487 201488 Panning Frame Outrigger Plate Support 201488 Outrigger Plate Step 301772 Tripod Tube Weldment 300026 Tripod Channel Legs Elevation Jackscrew Assembly Step 301771/301736 Elevation Jackscrew Azimuth Jackscrew Assembly Step Mount Assembly Step 201327A 201313A Step 221345 X 2-1/4 57 mm Upper Lower Collars Installation Procedures Step Horn Assembly Shown for Step 201065A Waveguide Support Equipment Enclosure Step Reflector Backstructure Assembly Step Step Center portion Andrew Flash logo Step Step Step Step Quadrapod Subreflector Strut Assembly Step Installation Procedures Step Step Reflector to Ground Mount Assembly Step Installation Procedures Subreflector Assembly Adjustment Step Step Cross-Axis Grounding Kit Step Step Overview Acquiring a Satellite OperationStep Polarization at 45 degrees from Optimum Setting Maximizing Odd Transponders Subreflector Adjustment Overview General Cleaning Electrical Parts Preventive MaintenancePreventive Maintenance Antenna Preventive Maintenance Drive System Voltage Current Checks Step Step Preventive Maintenance Jackscrews/Motors Gear Motor/Housing Fill Drain Requirements Lubrication Chart High-Speed Antenna Lubrication Points Medium-Speed Antenna Lubrication Points