Film-Tech Cinema Systems
Film-Tech Forum ARCHIVE


  
my profile | my password | search | faq & rules | forum home
  next oldest topic   next newest topic
» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Swollen Christie Payout Head

   
Author Topic: Swollen Christie Payout Head
Manny Knowles
"What are these things and WHY are they BLUE???"

Posts: 4247
From: Bloomington, IN, USA
Registered: Feb 2002


 - posted 05-03-2002 11:34 PM      Profile for Manny Knowles   Email Manny Knowles   Send New Private Message       Edit/Delete Post 
This week I discovered some payout heads in the Christie AW3/AW3R that were swollen in place.

First, I had a Dickens of a time getting them out. Had to "wiggle" them while firmly pulling upward. It was necessary to refasten some of the white guide posts that came loose as a result of the manhandling.

I noticed an inordinate amount of old, dirty lube on the shaft and in the axle. At first, I wondered whether this is what caused the problem or if this was done in an attempt to alleviate the problem.

Cleaning the axle and shaft did not solve the problem, so I ruled out the idea that the lube was causing the heads to become stuck. I figured that the shaft had somehow expanded - possibly a rust issue - so I took a strip of sandpaper and sanded one of the shafts down to size. Then I cleaned it off with alcohol to get rid of the metal filings. This worked out okay, so I did enough so that there could be at least one per platter system.

Anybody know what causes this? Also...is it dangerous to sand them down like that? What's your take on using lube on the shaft or in the axles?

I still have the other payouts to do. Awaiting advice.

------------------
And, hey! Let's be careful out there.

~Manny.


 |  IP: Logged

Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99


 - posted 05-03-2002 11:58 PM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
Here's a tip, 40 grit sandpaper! Works great. Do them once like you did (but not "just enough" to make it fit, do it a bit more) and then you can forget about it for several years. If you don't do this, you will end up cracking the joint between the base of the brain and the shaft during repeated attempts to remove them, and then the brains are useless.


 |  IP: Logged

Randy Stankey
Film God

Posts: 6539
From: Erie, Pennsylvania
Registered: Jun 99


 - posted 05-04-2002 12:13 AM      Profile for Randy Stankey   Email Randy Stankey   Send New Private Message       Edit/Delete Post 
I have two thoughts on this:

First, I have seen some of the bottom "posts" where it was miscast or badly machined so that there is a burr on it. It's just big enough to make the brain go in tight.

The second thing is that some people just bash the brains around and slam them into place. The don't try to line things up when they insert it. This causes small burrs to develop on the bottom of the brain and around the edge of the hole.

Take a file or sandpaper and remove the burrs. If, in your opinion, the brains have seen some abuse make noise about it! If you can't get people to change their ways you will have covered your ass.

 |  IP: Logged

Paul G. Thompson
The Weenie Man

Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000


 - posted 05-04-2002 02:58 AM      Profile for Paul G. Thompson   Email Paul G. Thompson   Send New Private Message       Edit/Delete Post 
I had some burrs on mine. A nice bastard mill file is what I used.

 |  IP: Logged

Manny Knowles
"What are these things and WHY are they BLUE???"

Posts: 4247
From: Bloomington, IN, USA
Registered: Feb 2002


 - posted 05-04-2002 02:59 PM      Profile for Manny Knowles   Email Manny Knowles   Send New Private Message       Edit/Delete Post 
Okay, thanks for the tips & tricks. I appreciate them.

Now, what about lubrication? I never used to lube them before and I didn't have problems with them. Is lubrication necessary?

------------------
And, hey! Let's be careful out there.

~Manny.

 |  IP: Logged

Randy Stankey
Film God

Posts: 6539
From: Erie, Pennsylvania
Registered: Jun 99


 - posted 05-04-2002 08:45 PM      Profile for Randy Stankey   Email Randy Stankey   Send New Private Message       Edit/Delete Post 
The only lubrication I would give a platter is a couple of small blobs of grease between the "donut" bearings underneath the deck.

The more lubrication you put on, the more dirt and junk get collected in it and the more problems you have with it down the road... Not to mention the mess you have when you go to make any repairs.

 |  IP: Logged



All times are Central (GMT -6:00)  
   Close Topic    Move Topic    Delete Topic    next oldest topic   next newest topic
 - Printer-friendly view of this topic
Hop To:



Powered by Infopop Corporation
UBB.classicTM 6.3.1.2

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.

© 1999-2020 Film-Tech Cinema Systems, LLC. All rights reserved.