Grease recommendations for worm gear?

[GanjaTron]

Hi John,

thanks for the info. Actually, I think the screech comes from the worm gear gnashing into the gear. ;^)
Btw, any idea what's in RS's multipurpose gel?

I think I intentionally didn't fully tighten the screws when I first refurbed the card reader as I ran into exactly the same issue; motor jams when fully tightened.

Just to clarify: by pushing the gear wheel by hand, do you mean with the worm gear installed or without? There is no way you can push the wheel in the former case, and I assume this is by design.

Dumb question: has anyone here lubed the motor itself, and is this advisable/necessary? I assume its bearing must be dry after all these decades, but not sure how to even access them.

I've refurbed the card readers in my two HP-97's and opted not to lube them. So far so good, but one now also screeches, so might have to go this route next time round.

--Roland