llanago
fully equipped rock polisher
Member since January 2004
Posts: 1,714
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Post by llanago on Jul 11, 2004 23:12:01 GMT -5
Today I degreased and cleaned one of the used 33B's I got off ebay really good. I put the motor back on and it just hummed along, but when I put a barrel on it, the barrel wobbled like crazy and the other roller didn't roll. It turns easily by hand. I figure I must have left something off that keeps the roller/barrel steady and in contact with the other roller. When I got the tumbler, the barrels didn't wobble, but only the roller connected to the motor turned. I thought it needed a new motor, then I read Skippers thread about cleaning and degreasing. Firgured I would do that before buying a new motor. I am now convinced that the motor is not the problem. Anybody know what caused the barrel to wobble and not make contact with the other roller and what I need to do to fix it? I really, really want to get these two 33B's rolling - too many rocks, not enough tumblers! llana
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WarrenA
fully equipped rock polisher
Member since November 2003
Posts: 1,530
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Post by WarrenA on Jul 11, 2004 23:31:25 GMT -5
both rollers need to turn I would say that is the problem check the bearing on the shafts and make sure they are good I had borrowed a tumbler when I first started and the bushings on the shaft were shot and the barrel would not turn easily and would stick
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Post by docone31 on Jul 11, 2004 23:44:46 GMT -5
I got into an issue with my 33B with the frame not being exactly level. The four rubber-dubbers touched the table but it was not level. The wobble could be the drum, not the rollers. The rollers however, they must not bind in the nylon bushings. Someone could have abused the top of the bbl., and it is out of round. I might look there.
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llanago
fully equipped rock polisher
Member since January 2004
Posts: 1,714
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Post by llanago on Jul 11, 2004 23:46:44 GMT -5
Thanks, Warren. Now, I just gotta figure out what a bushing is! LOL! I have a diagram of a OT66, which I assume is basically the same as a 33B but bigger, and there isn't a bushing shown in the diagram. Can you explain what the bushing looks like? I probably know what it is, I just don't know it't proper name. May be the thing I call a dofongy. llana
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llanago
fully equipped rock polisher
Member since January 2004
Posts: 1,714
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Post by llanago on Jul 11, 2004 23:53:00 GMT -5
Doc, now I know what a bushing is - the same thing as a dofongy! LOL! The roller turns real smooth when I turn it by hand, so I don't think it is binding up in the bushings. I tried a couple of barrels on it - both of which are fairly new and don't wobble on my new 33B. Can't say that it was level though. I had it on the carpet when I tested it. Will hook the motor back up, put the level on it and go from there and see what happens.
Thanks! llana
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Post by docone31 on Jul 11, 2004 23:56:54 GMT -5
Ok, here we go. On your 33B, there are two rollers. That you can see. At the ends of the two rollers are two C clips each. You can see the two at the open end easier than the pulley end. Between the frame, sheet metal, and the rollers, are two each bushings. These act as both thrust bearings, and main bearings for the rollers. The C clips are kept off the frame by the thrust bearing component of the bushing. That being said, the bushings look like on each end of the roller, a plastic washer with a slit on each one. You can see the inside of the bushing from inside the frame. You will see a plastic sleeve that goes into the frame outside the roller, inside the frame at each end. A dense petroleum lubricant is the order of the day. I use Vaseline and generic Vaseline. All that is is #6 fuel oil that has been bleached and put into a container. I used to work for the company that made Vaseline. To lube, run the roller and with a Q-tip, same company, dab some on the slit and the outside and inside of the roller at the bushing. If there are no bushings, Loretone sells replacement bushings and they are very cost effictive.
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llanago
fully equipped rock polisher
Member since January 2004
Posts: 1,714
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Post by llanago on Jul 12, 2004 0:24:31 GMT -5
Thanks Doc, that helps a bunch. Printing this out so I can have it in front of me tomorrow when I perform surgery on both the used tumblers. They both have the same problem, except the barrel doesn't wobble on the one I haven't taken apart. I will try this and see if it works. I haven't taken the rollers off yet - couldn't get those dang C clips off. Planned to try again tomorrow to get those off and really clean it. Now I will know exactly what to do when I get the rollers off, cleaned and go to put it back together.
llana
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Post by docone31 on Jul 12, 2004 0:34:55 GMT -5
Take a good look at the C clips. They will have either an hole, or a lip at the end. At your local friendly Auto parts store some poor underpaid but meaning well gentleperson can find for you a pair of C clip pliers. The set will come with two different jaws. One will work. Try to get ones that are close to the tip rather than the longer ones. They will significantly help get the C clips off and allow you to put them back on again. You will also need a small allen wrench set to remove the pulley. A set for 3/8" and down will do the trick, Both of these items are coupla dollar items. Good luck.
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Post by stoner on Jul 12, 2004 12:47:12 GMT -5
Oh yes, the C-clip. Also known as the "oh Sh*t clip", as it flies to parts unknown while removing it.
been there, Ed
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WarrenA
fully equipped rock polisher
Member since November 2003
Posts: 1,530
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Post by WarrenA on Jul 12, 2004 18:26:13 GMT -5
also known to a mechanic as a Jesus clip as that is what you say when it flies away NEVER to be seen again.
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llanago
fully equipped rock polisher
Member since January 2004
Posts: 1,714
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Post by llanago on Jul 13, 2004 18:00:21 GMT -5
Well, I never could get those darn C clips off, but I cleaned and degreased every visible part of those thumblers. The rollers on both of them would roll freely when I put a barrel on them and used my hand to turn them. So, I determined it just had to be the motors, even though they ran and sounded good. So, I took the motor off my new 33B and put in on one of the old 33B's, wired it up, plugged it in and put a couple of full barrels on it. Ran like my new one did - back before I took the motor out! LOL! So, gotta get myself to the rock shop and buy two new motors. Then I can get the other old 33B and my new 33B rollin'. After all this diagnostic work on these older 33Bs, I can rip out the motor and put it back in in a flash! Now, if I could just get the C clips off, I would consider myself a quite competent tumber repair woman!
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WarrenA
fully equipped rock polisher
Member since November 2003
Posts: 1,530
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Post by WarrenA on Jul 13, 2004 23:17:18 GMT -5
try a little screwdriver and gently pry up from the shaft near the center trying to keep 1 finger on the clip to keep it from flying sometimes if you have a big enough pliers you can get 1 of the jaws under the clip (where the open part of the clip is) and the other jaw on top of the shaft and kind of squeeze the jaw and twist the plier at the same time and the clip might go flying
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