65: Slight squeaks from the card reader

[teenix]

(01-08-2020 08:09 PM)Dave Britten Wrote:  The card reader in my 65 (thanks Don!) is working just fine, but it's developed a little bit of a squeak. I'm not shy about opening it up to clean/lubricate parts, but I don't really know where to begin with the mechanics of it all. I know there's some kind of clutch that could be slipping, plus a worm gear driving a gear wheel on the card transport roller. The actual card transport speed seems normal and steady, so it's not having any obvious difficulty advancing the cards. And it reads and writes perfectly fine.

Any tips on what I should try? My fear is that the squeak indicates something might be subjected to more wear than it should be from normal use.

It is more likely that the aging motor has worn rotor shaft bearings which can "rattle" when in use. The motor spins at 10,000 or so RPM so that rattle manifests itself as a high frequency squeal.

I don't know if it is fixable other than motor replacement.

cheers

Tony