General Dynamics SATCOM Technologies KX 120, Руководство по эксплуатации и техническому обслуживанию

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600-1152A 5
2.12 Manual Operation of Drive Assemblies
The jack drive assemblies can be manually operated by means of a ratchet rotation or
an electric drill with a socket fitting on the end of the jack input shaft. It can also be
driven at the end of the motor shaft under the plug on the end of the fan shroud.
WARNING! LOCKOUT POWER TO SYSTEM PRIOR TO MANUALLY DRIVING
ANTENNA. REMOVE RATCHET/ELECTRIC DRILL FROM THE END
OF THE JACK INPUT SHAFT OR GEARMOTOR SHAFT BEFORE
RETURNING POWER. INJURY TO PERSONNEL AND/OR DAMAGE
TO THE EQUIPMENT MAY RESULT IF NOT REMOVED.
2.13 Azimuth Jack Assembly Repositioning Procedure
(Applies to 2-position antenna only)
When an azimuth look angle is desired which is outside the range of the existing jack
position, the following steps are the recommended repositioning procedures under calm
wind conditions (less than 10 mph / 16 km/h).
1. Clean the dirt and grease from the exposed portion of the azimuth jack screw.
2. Drive the reflector to its highest elevation look angle.
3. Disconnect azimuth limit switch.
4. Retract (or extend) the azimuth jack its full travel.
5. Secure antenna so that the pedestal cannot rotate in azimuth. This should be
done in a manner that will not damage the protective (paint or galvanizing) finish.
Note: One such securing method is to place a twelve-ton hydraulic jack
beneath the 1" thick plate on the bottom of the pedestal (the plate that
forms half the clevis for the azimuth jack trunnion), with a nominal 2"
wooden board between the jack and the pedestal bottom. Tighten the
jack until the wood shows some deformation, but avoid forcing the jack
until the wood splits.
6. Remove the six bolts securing the deadman pivot and azimuth jack to the
deadman base.
7. Extend (or retract) jack until the six bolt holes in the deadman pivot match the
corresponding holes in the deadman base in the adjacent position, rotating the
jack about its trunnion axis by hand.
8. Replace the six bolts, washers, and nuts that hold the deadman assembly
together with new hardware and tighten via turn-of-nut method.
9. Remove hydraulic jack or other means of securing method.
10. Connect and re-adjust limit switch, making sure limits are within travel range of
jack.
11. Recoat exposed jack screw with lubricant method mentioned in Section 3.5.