Model 1200K/1210K - RCI SNG ANTENNA SYSTEM
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Operation and Maintenance Manual
SECTION 6 - MAINTENANCE
6.1 GENERAL
The AvL Model 1200K/1210K-RCI is designed such that any wear should never degrade performance
below specifications and essentially no maintenance will ever be required. However, since it is
impossible to ascertain or test for all possible environments, the following check up is recommended
each year. If any problems are observed, refer to the appropriate section.
6.2 ANNUAL INSPECTION
AZIMUTH
• Hand crank in azimuth the unit should hand crank easily.
• Check for unusual noise in azimuth bearing and azimuth gearbox.
• Run in azimuth and check for unusual noise in azimuth motor.
• Check position of azimuth drive cables on capstan at 0°az.
• Check drive cables for damage.
• Have someone run to both az limits and observe cable tracking.
• Check oil level in gearbox.
• Remove cable termination block covers and inspect cable terminations.
Tighten springs if more than .010 gap exists between spring sets. Tighten
With an open-end ¼” wrench and using Visegrip pliers holding stud.
• Inspect az stow switch.
• Inspect and confirm az potentiometer is seated properly and not damaged.
• Check az bearing screws, az gearbox bolts, az pot bracket, etc are tight.
ELEVATION
• Hand cranking in elevation the unit should hand crank easily.
• Unit should hand crank with approximately 50-75 in-lbs. torque.
• Check for unusual noise in elevation pivot bearings and elevation gearbox.
• Run in elevation and check for unusual noise in elevation motor. (Run to limits)
• Check position and tracking of elevation drive cables.
• Check drive cables for damage.
• Check oil level in gearbox.
• Remove backing structure covers and inspect cable terminations. Tighten
springs if more than .010 gap exists between spring sets. Tighten with an
open-end 7/16" wrench and using Visegrip pliers holding stud.
• Inspect elevation limit switches.
POLARIZATION
• Remove rear feed cover.
• Run in polarization and check for unusual noise in polarization gearing or motor.
• Inspect polarization potentiometer.
• Inspect wave-guide for any damage, dents, or cracks.
