8mm Forum: Projector threading problem

This is topic Projector threading problem in forum 8mm Forum at 8mm Forum.

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Posted by Alan Rik (Member # 73) on March 24, 2016, 11:03 PM:

I have a Bauer where the threading isn't working and all evidence points to a seized linkage. What can I use to "unseized" the linkage? I have heard someone use Svitol which broke down the gunk so the piece would move freely again but we don't have Svitol here. Any suggestions?
Thanks!

Arrow is the part that should move freely but is stuck.

Posted by Thijs de Kort (Member # 4897) on March 25, 2016, 03:48 AM:

Hello Alan,
The part that should be moving is stuck on the axis (see picture for exact axis) personally i fix it with a hairdryer WD40 and some more solid lubricant, Heat the part up and add some WD40 on the axis. let it stand for about 15 minutes and heat it up again.
After that (while its still warm) add the other lubricant and let it "walk" over the axis, keep moving the main knob so the axis is moving.

Hope this helps.

Also i know that andrew has completely dismounted his to get to this part but in my experience this works perfectly as well and is a whole less amount of work.

Posted by Andrew Woodcock (Member # 3260) on March 25, 2016, 04:55 AM:

It's definitely the lower black plastic curved guide that is mainly responsible for allowing the film to thread successfully into the sound head section without any concertina effect to the film.

It should have 3 different positions depending on switch position between 0, thread and run lamp positions.

The bind on this mechanism and linkages can occur from a few different places or if a spring is missing etc.
Try Thijs excellent suggestion without using excessive heat and if that doesn't work, let me know and we can investigate further by comparing photos from your mechanism to a known good one.

I'm out today and tomorrow but in at the evenings.

Good luck with it Alan.

Btw I would always recommend fine machine oil like mineral oil or 3 in 1 oil as its known here in the UK.
Great stuff on sewing machine mechanisms! Ha ha.

The issue I have with WD40 is it dries out after a while so it's lubrication properties are limited. Great for car starting issues but not necessarily the best for projectors or sewing machines! [Big Grin]

Posted by Thijs de Kort (Member # 4897) on March 25, 2016, 06:58 AM:

quote:
The issue I have with WD40 is it dries out after a while so it's lubrication properties are limited. Great for car starting issues but not necessarily the best for projectors or sewing machines!

This is absolutely true.

I didnt explain myself correctly it seems. What i meant to say is to use the WD40 to clean the bearing of any possible dust and other things that could jam the bearing. WD40 does an absolutely marvelous job of removing it.
Afterwards (as Andrew mentioned) use an actual lubricant for the long term.
Good luck with it! [Smile]

Posted by Alan Rik (Member # 73) on March 25, 2016, 08:42 AM:

I will try all your suggestions. Thanks!

Posted by Alan Rik (Member # 73) on March 25, 2016, 10:50 PM:

Machine all fixed and unseized! Many thanks to everyone who replied, Thijs for confirming the problem and the great solution, Mr. Woodcock for pointing out the initial diagnosis which was correct, and the great Mr. Moderator Doug who had a FaceTime chat with me while we compared Bauer T610 linkage movements!
Thank you thank you thank you!
And also to WD40, 3 in one Oil, and white lithium grease. My Bauer is even quieter now than it was before.

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