ViaSat Series 8345, Руководство по установке

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Chapter 4 - Maintenance
5. Check the oil level in both the azimuth and elevation actuator gear boxes and
add Mobil SHC 634 oil, as required, to maintain a level of approximately half
full.
6. Inspect azimuth machine screw. If the screws are coated with grease and the
grease is in good condition, no further action is required. If either screw is not
adequately coated, or if the grease is dry, hard, or contaminated, the lubricant
must be renewed. Do not add grease to old grease of the screw. Clean the screw
of old grease using a solvent. Dry the screw with clean cloths. Apply a thin
uniform film coating of one of the following low-temperature greases.
CAUTION
If one of the following low-temperature greases is not used on
the actuator machine screw, damage to the screw or motor
could occur.
•
Texaco Low Temperature #2346
•
Shell Aeroshell #7
•
Mobil Low Temperature #28
7. Inspect azimuth and elevation boots. Replace as required.
8. The antenna rotates in azimuth on rollers rotating about the azimuth ring.
Inspect rollers and apply a thin uniform coationg of grease to the contact
surfaces of all rollers.
CAUTION
Do not over lubricate elevation actuator housing. Over
lubrication will result in damage to shaft seals.
9. Remove the grease fitting from the side of the elevation actuator housing.
Inspect internal grease and add as required. Do not over lubricate. Over
lubrication will damage shaft seals.
10. Locate two grease fittings, one at each end of azimuth actuator housing. Apply
one or two shots of grease to lubricate the lead support screw bearings.
42S199F 4-3