8mm Forum: How to replace a worm drive on a B&H 1695 projector

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Topic: How to replace a worm drive on a B&H 1695 projector

Mark L Barton
Jedi Master Film Handler

Posts: 621
From: Bristol, South Glos, England
Registered: Mar 2009

posted June 02, 2010 05:55 AM

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I knew it would happen eventually (like a head gasket going in a Landrover Freelander) yes...the worm drive has finally cracked in my Bell and Howell 1695 16mm projector. So the question guys is: How do you replace the wrom drive in a Bell and Howell 1695 projector" Any and all replies with advice greatly appreciated. Cheers, Mark

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Jean-Marc Toussaint
Film God

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From: France
Registered: Oct 2004

posted June 02, 2010 06:35 AM

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And the answer is : "with much difficulty".

Mark, do you have any experience in disassembling projectors? Changing a B&H worm gear can be a real pain. You may purchase a spare part from Classic Home Cinema and the complete service book of the TQIII/1695 can be downloaded from the Manuals sections. Good luck.

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The Grindcave Cinema Website

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James Wheeler
Junior
Posts: 14
From: Detroit, Michigan USA
Registered: Nov 2009

posted June 02, 2010 08:21 AM

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I think you have to tear down a good portion of the projector and have a special tool to remove and add the new worm gear. It cost around $300 to have this done, but the new gears are suppose to last a long time.

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Mark L Barton
Jedi Master Film Handler

Posts: 621
From: Bristol, South Glos, England
Registered: Mar 2009

posted June 02, 2010 10:10 AM

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Yep, thats what I thought. I may just list the projector on Ebay as spares or repair. Damn shame as it was such a good runner.

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Richard C Patchett
Master Film Handler

Posts: 424
From: Flint Mi 48506
Registered: Dec 2007

posted June 02, 2010 10:16 AM

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Greetings Is the projector still running?
If so just use it until it locks up.
Ive seen worm gears with many cracks that sill run. Some over a year.
Check out my web site on worm gears At
http://www.rcsclassic16mm.com
RC

--------------------
RC’s Classic Collection
16 mm Parts & Service
Elmo, Eiki, Bell & Howell +
http://www.rcsclassic16mm.com/

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted June 02, 2010 10:43 AM

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Mark
My service engineer would probably charge £150 "all in". But, as Richard says "use it until it gives you trouble", this is usually wow from the sound and the two stabilising rollers "bobbing up and down".
It is certainly not a job for D.I.Y.
I live near you. Send me a PM for details of my engineer.

--------------------
Maurice

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Mark L Barton
Jedi Master Film Handler

Posts: 621
From: Bristol, South Glos, England
Registered: Mar 2009

posted June 03, 2010 04:06 AM

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Thank you all, I think I may just sell it as spares and repairs, the fact being that the worm drive has fully detached from its metal inner.
Maurice, thank you for your offer of details of the engineer who might be able to repair the ol' girl. Can you post his details here or do you want to email me : mark dot barton at uwe dot ac dot uk....thanks to all again.

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Simon McConway
Phenomenal Film Handler

Posts: 1085
From: Doncaster, UK
Registered: Jun 2004

posted June 03, 2010 06:08 AM

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I am fortunate enough to have received training on the worm gear replacement process, from a retired B & H engineer living nearby. Until you see someone else do the job, you'll never quite get it right. The B & H service manual is useless, except for the exploded diagrams. People "think" they know everything about these machines, but until you've overhauled one fully, you haven't even touched the tip of the iceberg!

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Mark L Barton
Jedi Master Film Handler

Posts: 621
From: Bristol, South Glos, England
Registered: Mar 2009

posted June 03, 2010 07:13 AM

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I seem to remeber an engineer at McMillans (now ceased trading) who was B&H trained etc, he mentioned that it was'nt just replacing the worm drive but re setting the claw and other synchronised items, if set wrong the film might jump or break etc etc. I don't think I will be tackling that job, and will go ahead and list the projector as spares or repairs, look out for it on the UK site. Cheers and thanks again to all.

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Barry Johnson
Master Film Handler

Posts: 358
From: United Kingdom
Registered: Jul 2003

posted June 05, 2010 07:29 AM

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Try and buy an old Ampro [Wink]

[Wink]

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Standard8 rules!!

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted June 05, 2010 10:54 AM

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If you are suggesting something as old as an Ampro, why not the classic, built like a tank, Cinetechnic Debrie D16?

--------------------
Maurice

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David Kilderry
Jedi Master Film Handler

Posts: 963
From: Melbourne, Victoria, Australia
Registered: Feb 2006

posted June 07, 2010 04:11 AM

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I have worked with 16mm B & H for over 30 years and am also in contact with a former Bell and Howell technician; my advice? Use it until it stops, then buy another.

The prices of good used machines are cheap compared to the drama of a worm gear job. As Simon says, there is so much more to know about these projectors than you think. Try a charcoal case projector (don't touch grey or green unless you have to buy a 666) and you will get good worm gear life.

David

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Michael O'Regan
Film God

Posts: 3085
From: Essex, UK
Registered: Oct 2007

posted June 07, 2010 04:34 AM

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I've come across this advice before, David, and have always meant to ask -
Why are the green B&H'S best avoided?

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Barry Johnson
Master Film Handler

Posts: 358
From: United Kingdom
Registered: Jul 2003

posted June 07, 2010 05:59 AM

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Debrie,yes of course.A classis indeed and well worth considering.Old as an ampro??? My machine was only built in 1962!!! Only a baby compared to the Debrie! [Cool]

[Cool]

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Standard8 rules!!

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted June 07, 2010 02:55 PM

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Mike
The green Bell & Howell projectors are older than the later charcoal grey models.

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Maurice

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Michael O'Regan
Film God

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From: Essex, UK
Registered: Oct 2007

posted June 07, 2010 04:14 PM

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Ah, so they're undesireable from the aspect of the older worm gear?

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Maurice Leakey
Film God

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From: Bristol. United Kingdom
Registered: Oct 2007

posted June 08, 2010 01:47 AM

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I wouldn't call them undesirable other than the fact that they are older and so is their worm!

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Maurice

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