Finally fixed a squeaky aperture ring that had me stumped for 3 days
Turns out the tiny grease port on a 1987 Canon FD was clogged with old lubricant that had turned to paste, I spent 2 hours flushing it with naphtha instead of just replacing the whole assembly. Anyone else run into this on older lenses, or am I the only one who skipped the obvious fix?
Old grease is the worst. Had a similar thing with a Nikon 50mm from the 70s, except the focus ring just locked up completely one winter. Took the whole thing apart on my kitchen table, tiny springs everywhere. Still finding them in the rug months later. Naphtha sounds smart though. I just used lighter fluid and prayed a lot. The fix worked but my wife still gives me side-eye about the smell.