[GreenKeys] NOS bearings

[John, W9DDD]

I must confess to having made the assumption that the section on 
lubrication would call for grease.  Guess what, 2 drop of oil is what 
they call for.

On the other hand for motors they say to not oil even though there's 
places to do it.  They say packet with grease at the factory.  I wonder 
if they had sleeve bearings originally and switched to ball.  Probably 
used up the end bells with the oiling provision before switching to the 
no oil holes version I've seen in some motors.

John, W9DDD
Ich habe dreimal abgeschnitten uns jetzt zu kurtz. (I cut it off 3 times 
and it's still too short.)

On 8/23/2019 2:07 PM, Nick England wrote:
> I confess to squirting things like this with some WD-40 to loosen up the 
> old gunk and getting the bearing to turn freely by hand. Then stuffing 
> some Red-N-Tacky grease into it and declaring victory.
> I dunno - Not like I am running anything 24/7.
> 
> Nick England K4NYW
> www.navy-radio.com <http://www.navy-radio.com>
> 
> 
> On Fri, Aug 23, 2019 at 2:47 PM John, W9DDD <w9ddd at tapr.org 
> <mailto:w9ddd at tapr.org>> wrote:
> 
>     I have this NOS intermediate assembly that likely has been in storage
>     since before 1980.
> 
>     I can see grease in the bearings, and it doesn't look hard or old.  But
>     I don't want to start running it hard and then have a problem.  (hard
>     being a few hours a day?)
> 
>     Bank in the last century the motor bench guy used to flush the bearings
>     with a solvent (kerosene?) and then repack them with fresh grease.  But
>     this would have been after many hours of use or maybe even years for
>     25-250 HP motors.
> 
>     Should i go to that extreme?  Or maybe a drop or two of oil to loosen
>     things up?
>