8mm Forum: Proud owner of a new faulty projector..

This is topic Proud owner of a new faulty projector.. in forum 16mm Forum at 8mm Forum.

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Posted by Ian Clegg (Member # 7160) on October 28, 2019, 05:01 PM:

Hi people I'm new here!! I bought a Bell & Howell TQIII Specialist 16mm projector so that I can view some movies belonging to a guy in our local history group. I didn't pay a lot for it, but i'm disappointed in that it won't run. Wonder if you have any ideas please? The lamp comes on, the worm gear moves a little if I switch from forward to reverse, but other than that nothing. I have uploaded some images. The worm gear looks in good shape. The motor spindle is turning okay. Is the belt too narrow? It is quite slack. What is the function of the large grey wheel that freely rotates to the left? Hope not too many questions..
Am I limited to just one photo per post?

Posted by Janice Glesser (Member # 2758) on October 28, 2019, 08:06 PM:

Welcome to the Forum Ian! Just from your brief description I would start by replacing the motor belt. If it is too loose it won't turn the pulleys or gears.

Posted by Steve Klare (Member # 12) on October 28, 2019, 08:19 PM:

I'd just have to tighten the grub screw on that pulley!

-and it's true, that belt and pulley were never meant for each other.

Posted by Maurice Leakey (Member # 916) on October 29, 2019, 04:08 AM:

I would suggest that the lubrication has dried out and the motor is unable to drive the mechanism, hence the belt looking in a decidedly odd position.

Posted by Brian Fretwell (Member # 4302) on October 29, 2019, 10:35 AM:

I am sure you can put at least 5 pictures in each post.

Posted by Joe Taffis (Member # 4) on October 29, 2019, 10:53 AM:

Ian, you may need to switch browsers to post multiple photos. I had to switch from Microsoft Edge to Internet Explorer to do it...

Posted by Ian Clegg (Member # 7160) on October 29, 2019, 12:45 PM:

Thanks for all your replies. The gears look very well lubricated although maybe dry in places I can't see. I saw a youtube video of the same machine and the belt looked wider. It looks too narrow for the pulley to me. I'm going to replace it as suggested and try again. Its a remarkable piece of equipment. Makes my other 8mm look like a toy! I'll keep you posted. Thanks again..

Posted by Clyde Miles (Member # 4032) on October 29, 2019, 01:46 PM:

ian, if you can locate the shutter blade. just infront of it is a felt cam wick. try putting a couple of drops of oil on it. this sometimes dries out completely.

Posted by Maurice Leakey (Member # 916) on October 29, 2019, 03:51 PM:

Ian
Your belt looks the correct size, but is not vertical as it should be.

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