ViaSat 8116 Series, Инструкция по установке и эксплуатации

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LOWER MOUNT INSTALLATION PROCEDURES
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42S183D
SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA
2-13
The leg assembly must be properly aligned and installed for all
assemblies to properly fit together. Install the legs and associated
frame assemblies in accordance with the following procedure. Leg Installation
WARNING
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The following assemblies weigh from 135 lbs
(61 kg) to 15355 lbs (16965 kg). Use extreme
care when hoisting these assemblies into position.
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1. Install one hex nut (item 100, Figure 2-3) on each of the 24 leg anchor
bolts (six sets of four) and one hex nut (item 104) on each of 38 skin
bottom angle anchor bolts. Locate top of the nut 1-inch above the pad.
2. Place one flat washer (items 101 or 103, Figure 2-3) on each hex nut.
3. Using hoist, lift leg (item 1) into position over one set of column anchor
bolts (weight = 2790 lbs, 1265 kg).
4. Align column bottom plate holes with anchor bolts so the column leans
inward toward center of mount and secure with four flat washers and
nuts (item 100 and 101). Hand tighten nuts.
5. Using ladder remove hoist from leg.
6. Install remaining 5 legs as described in steps 3 through 5.
7. Attach hoist to azimuth bearing ring assembly (item 2).
8. Lift azimuth bearing ring assembly to rest on top of 6 legs.
9. Align azimuth bearing ring assembly corner holes with holes in top
mounting plate of legs. (It may be necessary to lower some of the legs
using nuts on leg base in order to properly align the holes.)
10. Secure azimuth bearing ring assembly to top plate of legs with screw,
two flat washers, and nut (item 102, 103, and 104). Hand tighten.
11. Remove hoist from azimuth bearing ring assembly.
12. Torque azimuth bearing ring assembly bolts to 1100 ft-lbs
(1491 Nm). Azimuth bearing ring assembly bearing mounting surface
(top of item 2 in Figure 2-2) should be leveled now by adjusting leg
anchor nuts up or down as required.