Help! Canon rangefinder advance ratchet!

[darinwc]

I finally was able to disassemble my Canon rangefinder.
However I am at a loss as to where the ratchet mechanism is or is supposed to be.
This is a knob wind rangefinder Canon iid.
The knob will wind and stop but it will turn backwards and that is bad.

Hello me please!

 

[darinwc]

Ahha! So it is not a ratcheting device like I was thinking. It is a coiled spring tapped around the main shaft (in the picture the one on the right).
They're is a collar around the spring with a notch cut in it. The spring exits through this notch and attached to the little bar with two screws (far right).

The advance knob holds the shaft in place and I think someone had not reassembled it back together correctly. I had noticed it was loose. Because it was loose, the collar that held the spring in place had a gap, and the strong had worked out of the collar.

It was a pain to get it all back into place but it is done. The mechanism is now smooth as silk and I am putting the camera back together. Yay!

 

[Helios 1984]

*Thumbs up

Glad you managed to fix the 'ol gal. I was trying to find a service guide for your camera but couldn't find any, I noted tht the inside layout is quite similar to Leica iii tho.