What did you fix today? (part 2)

David R Williams said:

Our family had one of that very clock at our summer cottage in NW Ontario. Unfortunately, it went with the cottage (along with my summer stereo) when my parents sold it in the late '90's.

Nice to see a reminder of the clock.

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Helios 1984 said:

Here's the instructions I used, years ago.

I had to relubricate the helicoid and focus ring because they were so difficult to rotate that it hurt my fingers. The inner helicoid is easy, you remove the back, a few bits, and you can unscrew the unit from the front. Just make sure to note where it comes out or else you spend half an hour trying to find the correct position. Also, if the focus is smooth enough and the infinity focus is fine, I'd leave them alone. They're held together with a retainer ring instead of setscrews, and it's a finicky to re-tighten the ring without messing the focus.

Here's what I'm talking about.
On the picture, I'm pushing the outer helicoid counter-clockwise with a flat bladed screwdriver, as I'm tighting the retainer ring clockwise with a spanner wrench.

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