Airstream 390 - Manual (Page 82)

H
ELECTRICAL SYSTEM
H - 10
Maintenance
Lubrication
To lubricate the elevating gear apply a liberal amount of silicone spray lubricant to the
elevating gear with the lift in the down position, then run the lift up and down a few
times to distribute lubricant over gears.
Lubricating Rotating Gear Housing
In the event that rotating the antenna becomes difficult, lubricating the bearing surface
between the rotating gear housing and the base plate can restore normal operation.
Any spray type silicone lubricant may be used.
Elevate antenna and remove setscrew from rotating gear housing as shown. Spray lu-
bricant into hole and around edges of gear housing. Rotate gear housing until lubricant
coats bearing surfaces and antenna rotates freely.
For detail and diagrams in the antenna please read the antenna manual supplied in
the owner’s case.