Odd Shutter Speed on OM1 (1/15)

Hi,

My OM1 has developed an issue with the 1/15 speed, all other shutter speeds are correct (as far as I can tell) including the B setting, oddly though the 1/15 is now exactly the same speed as the 1/4 setting, does anyone have an idea on where to start looking, cleaning, or adjusting? I was thinking first to take the bottom plate off that covers the speed mechanism, check the 1/1000 setting is correct then maybe insert some lube into the slow speed mechanisim?

If anyone has some learned experience on where to start troubleshooting it would be appreciated.

Kind regards,

I've no specific knowledge of this but I'd make these observations:

"Check the 1/1000 setting is correct" - how would you do that? And why?

"Then maybe insert some lube into the slow speed mechanisim?" - this would almost certainly gum things up even more.

If it's only 1/15 that's playing up I'd be inclined to try and live with it. But hopefully someone will come in with a more informed reply.

If you know that IT IS ONLY 1/15, then just avoid using 1/15 sec.

You can try exercising the shutter speed, by shooting the camera, WITHOUT FILM, a few dozen times at that speed. With luck that will unstick the gummed/dried up lube, and get it moving again. However, that is only temporary, if the lube is gumming up, best to have the camera serviced with a CLA, to clean out the gummed up lube and relube it.

Unless you KNOW what you are doing, don't try to disassemble and lube a camera.

If you know that IT IS ONLY 1/15, then just avoid using 1/15 sec.

You can try exercising the shutter speed, by shooting the camera, WITHOUT FILM, a few dozen times at that speed. With luck that will unstick the gummed/dried up lube, and get it moving again. However, that is only temporary, if the lube is gumming up, best to have the camera serviced with a CLA, to clean out the gummed up lube and relube it.

 

Unless you KNOW what you are doing, don't try to disassemble and lube a camera.

Thanks gu

Thanks guys, I thought i'd share my findings as it may be useful to someone else, after reading through two Camera Craftsman publications onothe OM1 my investigations found that the high speed pallet control cam was very slightly out, and I mean slightly, basically the 1/15 setting still engages the high speed cam but due to to the cam being out the lever that follows this cam had dropped slightly triggering the slightly longer speed, since adjusting the cam so the lever sits just on the lip of the can the 1/15 is now perfect, all o can assume is that over time these parts do slip ever so slightly, one weak spot could be the the shutter selector ring under the lens mount is plastic and the teeth may very slightly wear over the years, either way pleased and my OCD is now in check!

Thanks for your replys

Kind regards

Steve

Thanks guys, I thought i'd share my findings as it may be useful to someone else, after reading through two Camera Craftsman publications onothe OM1 my investigations found that the high speed pallet control cam was very slightly out, and I mean slightly, basically the 1/15 setting still engages the high speed cam but due to to the cam being out the lever that follows this cam had dropped slightly triggering the slightly longer speed, since adjusting the cam so the lever sits just on the lip of the can the 1/15 is now perfect, all o can assume is that over time these parts do slip ever so slightly, one weak spot could be the the shutter selector ring under the lens mount is plastic and the teeth may very slightly wear over the years, either way pleased and my OCD is now in check!

 

Thanks for your replys

 

Kind regards

 

Steve

Man you are more brave than I am, to go into the camera.

cleaning and exercising are good ideas.

"lube" is NOT