Airstream NTERSTATE Owner's Manual page 83

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.
Elevating Shaft Worm Gear Assembly Replacement Procedure
NOTE: It is not necessary to remove the rotating gear housing (11) from the base plate
(14) or remove the antenna from the roof to replace the shaft and gear assembly.
STEP 1: Lower antenna to travel position. Loosen set -screw on elevating crank (23);
remove crank, spring (20), and directional handle (19).
STEP 2: Remove top retaining ring (5) from top pin (4) holding top elevating tube in
rotating gear housing and remove pin.
STEP 3: Remove plug from top of rotating gear housing elevating gear (8) and remove
elevating shaft assembly (10).
ELECTRICAL SYSTEMS
STEP 4: Cut new shaft to same length as one removed.
STEP 5: Lubricate worm gear on new elevating shaft assembly with spray silicone
lubricant, make sure wave washer, flat washer and quad ring are on lower bearing and
insert assembly in housing.
STEP 6: Install plastic plug in top of housing, re-engage elevating gear in worm gear,
replace pin and retaining ring.
STEP 7: Replace directional handle, spring and elevating crank. Make sure setscrew
contacts flat on shaft before tightening.
See antenna owners manual for drawings and further instructions.
H - 8
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