Lube for Bilora Bella shutter? [video]

[skorpiius]

So I got a Bilora Bella 44

(file photo)

And the shutter wouldn't trip.
I took it apart and it appears that either the lube is bad/dry, or the +-spring is weak, so that it sometimes recocks slowly, or not at all.

Video:
[video=youtube;hiVPWpX4KwE]https://www.youtube.com/watch?v=hiVPWpX4KwE[/video]


Any suggestions as to whether I should lube or replace the spring, or both? Any idea what lube I should use?

Thanks

EDIT: I put less than a drop of light mineral oil on the back of the pivot point which initially made things much better, but after a few mins had degraded.

 

[summicron1]

Hmmmm. If it were me I'd try just cleaning it first, get the pivot for the shutter as clean and dry as you can so it swings freely.

let me know, I have one of those that has the same problem. Never tried to shoot it.

 

[bernard_L]

IMO adding lubricant is the last thing to do. Before you should:
- clean in suitable solvent, e.g. naphta, not acetone!
- if that does not work, and after you understand the role of each part, look for a part that has, maybe, worn out in a particular spot, developing a burr or similar; if that is the case, gentle rubbing with very fine sandpaper (600 and up) might restore normal operation