Worm Gear Replacement.

#1 by Robert Crewdson ( deleted ) , Wed Sep 02, 2015 7:39 pm

Someone posted an 18 minute video on how to replace a worm gear; interesting, but not something I would want to try while there are still professionals out there.
https://www.youtube.com/watch?v=znCTbFE2bgI



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Last edited Wed Sep 02, 2015 7:40 pm | Top

RE: Worm Gear Replacement.

#2 by Hugh Thompson Scott ( deleted ) , Wed Sep 02, 2015 7:45 pm

Totally agree there Robert, best to leave that kind of job to someone who knows what they're doing.



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RE: Worm Gear Replacement.

#3 by Clyde Miles , Wed Sep 02, 2015 9:57 pm

thats very interesting. might have a go at that myself, being mechanically minded.


 
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RE: Worm Gear Replacement.

#4 by Steve Bales , Wed Sep 02, 2015 11:20 pm

I would use a camera and record everything you do when taking the projector apart so you can go back and watch each part you took off and where it go's back.. theres so many parts you have to remove that it would be easy to get lost after tearing the projector down.


 
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RE: Worm Gear Replacement.

#5 by Clyde Miles , Wed Sep 02, 2015 11:30 pm

yes thanks steve i was going to do that, now i know the procedure, i'm looking forward to it. trial and error with shuttle adjustments, but i've done this before with good results.


 
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RE: Worm Gear Replacement.

#6 by Robert Crewdson ( deleted ) , Wed Sep 02, 2015 11:44 pm

It's something we might be forced into doing in the future.



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RE: Worm Gear Replacement.

#7 by David Hardy ( deleted ) , Thu Sep 03, 2015 1:08 am

A job not for the faint hearted or of a nervous state !


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RE: Worm Gear Replacement.

#8 by Clyde Miles , Thu Sep 03, 2015 10:54 pm

ok new worm gear in the post. i have one of my tq3's that has a couple of small cracks, think i'll do this one and let you guys know how i get on, nothing to lose.


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RE: Worm Gear Replacement.

#9 by Vidar Olavesen , Thu Sep 03, 2015 11:04 pm

Good luck and tell us if the video helped


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RE: Worm Gear Replacement.

#10 by Mats Abelli , Thu Sep 03, 2015 11:23 pm

Good Luck Clyde. I am shure that you will make it. I know a former photo store owner who replaced a couple of wormgears, without earlier experience. He is just a handy man. Myself I have a bunch of untested B&H, so this can be very interesting.



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Last edited 09.03.2015 | Top

RE: Worm Gear Replacement.

#11 by Tom Photiou , Thu Sep 03, 2015 11:38 pm

i love these sort of videos, very well done,clear and easy to follow, more more



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RE: Worm Gear Replacement.

#12 by Douglas Warren , Thu Sep 03, 2015 11:57 pm

Good luck Clyde and let us know how it goes.I have a Bell & Howell 2585 that needs a worm gear replacement as well.



 
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RE: Worm Gear Replacement.

#13 by Robert Crewdson ( deleted ) , Fri Sep 04, 2015 12:18 am

You see a lot of worm gears for sale, Ebay and other places. Just one thing you need to know. Kevin Brown told me some of these worm gears sold on the internet can be 10,000th of an inch too large; it may not sound much, but he says they swell, and when showing a 1600ft reel, they could seize up. He has a supply of animation wormgears, I haven't used the animation facility, but he said he won't use non animation wormgears while he still has stock. I think Gordon Ogbourne has wormgears made from metal.



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RE: Worm Gear Replacement.

#14 by Douglas Warren , Sat Sep 05, 2015 5:51 pm

I recently picked up a Bell & Howell 2585 projector but it has the dreaded worm gear issue that most of these machines tend to suffer from.A shame considering that overall it's in very nice condition.



 
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RE: Worm Gear Replacement.

#15 by Robert Crewdson ( deleted ) , Sat Sep 05, 2015 6:18 pm

It's worth the money to get it serviced Douglas, you will then have a great machine that will give you years of service. I know of someone who can do that job in the States.



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RE: Worm Gear Replacement.

#16 by Hugh Thompson Scott ( deleted ) , Sat Sep 05, 2015 6:32 pm

Seriously, these videos etc make it sound easy, They fail to mention the special tools and tolerances of springs etc on
various parts, I doubt very much that the aspiring amateur has half of what is needed, a stout heart and a set
of screw drivers may not be enough. Rather than take a chance, I would put the job into the hands of someone versed in these
"seemingly simple" repairs, as Robert rightly states, a projector that's repaired properly will last for years. No offence intended, but
I would hate to see it go wrong Clyde.



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Last edited Sat Sep 05, 2015 6:36 pm | Top

RE: Worm Gear Replacement.

#17 by Robert Crewdson ( deleted ) , Sat Sep 05, 2015 6:55 pm

When I had my Worm Gear replaced the servicer said there were a few other issues to sort out, the fast film rewind button didn't engage properly, he said the auto threading mechanism needed adjustment, and there was a dry joint connected to the amplifier. The service may cost you more than you paid for the projector Douglas, but you have a modern machine, with lamps easily available.



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RE: Worm Gear Replacement.

#18 by Clyde Miles , Thu Sep 10, 2015 11:16 pm

ok, worm gear replaced this morning. took me about six hours. all unknown territory, but now i've done it and now the procedure, i am confident to do more when the need arises. encountered no real problems stripping and rebuilding, she now runs nice and quiet and purrs like a cat. ran projector for an hour with no film, then ran an hour and half feature with no problems. i am a very happy man!


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RE: Worm Gear Replacement.

#19 by Andrew Woodcock , Thu Sep 10, 2015 11:35 pm

Well done Clyde!!

There is no greater feeling than knowing you have the ability to keep your valued machines running just as they should.

I hope your post has inspired many others to take the plunge as and when necessary.


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RE: Worm Gear Replacement.

#20 by Robert Crewdson ( deleted ) , Fri Sep 11, 2015 10:43 am

That's brilliant Clyde; probably the biggest job you could undertake on a projector. This will give you the confidence to tackle anything else that arises yourself. Well done, it took a brave man to do that.



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RE: Worm Gear Replacement.

#21 by David Hardy ( deleted ) , Fri Sep 11, 2015 11:14 am

Congratulations Clyde. You deserve an Oscar for sheer courage and engineering skills.


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RE: Worm Gear Replacement.

#22 by Clyde Miles , Fri Sep 11, 2015 11:51 pm

thank you all, got a tq2 to do next.



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RE: Worm Gear Replacement.

#23 by Douglas Warren , Sat Sep 12, 2015 2:14 am

Clyde,
What make of projector did you do the worm gear replacement on?



 
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RE: Worm Gear Replacement.

#24 by Clyde Miles , Sat Sep 12, 2015 10:22 am

bell and howell tq3 model 1695


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RE: Worm Gear Replacement.

#25 by Douglas Warren , Sat Sep 12, 2015 2:55 pm

Thanks Clyde,as I was curious which model number it was.Hopefully I can get my Bell and Howell 2585 fixed due to its own worm gear issue.



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