[Boatanchors] Lubrication for Collins R-648

[WA5CAB--- via Boatanchors]

For the gear teeth, something like Lubriplate lithium base. For the 
bearings or bushings, straight SAE 20 or if the radio is routinely above 85 F SAE 
30. Don't use any detergent engine oil (which means pretty much any of the 
multi-grades readily available). On purpose of the detergents is to absorb 
moisture. As the bearing temperature probably never gets above 150 F, the 
bearings will quickly rust unless the relative humidity is very low. 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480

In a message dated 08/16/2015 22:09:31 PM Central Daylight Time, 
boatanchors at mailman.qth.net writes: 
> Hi:
> I have a R-648 that needs gear lube job.  I have the manual and it 
> specifies two lubricants:
> MIL-G-3278 (gear teeth)MIL-L-7870 ( bearings).
> What would I use for each?
> Many thanks,JohnK5ENQ