[Test-Equipment] Question regarding HP-8640B

[Barry]

Hi Brian,

That was it.  The oil had turned into a very sticky substance.  Clean and lube makes all the difference!

Now to figure out how to get the filter cams and the front panel switches synchronized....

And, I do have cracked gears so will be looking for the guy who has been making replacements.

Thanks again,
Barry - N4BUQ

> Aha, Barry,
> I've had exactly that problem. I opened up the box very carefully - you
> know, undo the Pozidriv screws as if you are removing the cylinder head
> ofan automotive engine - 1-7-3-9-5-2-8, etc. Remove the cover. Then you
> willsee the bearings at each end of the shaft. Mark the Oldham coupler and
> adjacent shafts outside the box, loosen the lock screws, slide the
> Oldhamcoupler to allow the actuating shaft to lift. Then split the bearing
> shells,add a drop of very fine lubricating oil to the bearings at each end,
> andthen reverse all the previous. End of problem!
> 73 de Brian, VK2GCE.
> 
> 
> "Barry" n4buq at knolo
>