kalvandian
off to a rocking start
Member since October 2009
Posts: 2
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Post by kalvandian on Oct 10, 2009 11:21:11 GMT -5
I have an old model 1.5E lortone rock tumbler and during the third phase of tumbling it started to slip on the bearings. Now it will not turn at all after I tried to sand paper the barrel and put some oil on the bearings. Please I need some advice!
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Post by frane on Oct 10, 2009 11:34:05 GMT -5
First question, is the motor running? Is the fan Turning and is the belt moving?
Sometimes the belts will stretch a little and you can unscrew the nut holding it and move it a little out to tighten it. I have had to go as far as putting plumbers tape (that white plastic stuff) on the wheel and then put the belt back on to give it a little more tightening.
You could have also ended up with some grit in the little plastic pieces that hold the rods that the barrel rests on. Just remove them and clean them out with a cotton swab. I have also found that I need to leave the faceplate off the motor area because it just gets too hot to run and stretches the belt out that way.
If it is running, you may just need a new belt and they have them at the rock shed for good prices and he ships fast.
If you do not hear the motor, it may have gone bad and may need to be replaced.
Good luck!
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Post by connrock on Oct 10, 2009 11:45:30 GMT -5
MAYDAY,MAYDAY!!!!!
There are a few things that will stop the barrel from turning.
If you get 1 drop of oil anywhere but exactly on the bearings it may get onto the pulley(s),belt or rollers.
Sometimes the belts stretch too or the pulley(s) can be loaded up with crap.
Clean both pulleys,the rollers and the belt with alcohol.Make SURE there is NO oil at all on the barrel itself.
Make sure the motor pulley isn't slipping on the motor shaft.If it is ,tighten the tiny set screw on the small diameter of the outside of the pulley.Make sure the 2 pulleys are lighned up before you tighten the set screw.
Another problem may be (but i doubt it) an over weight barrel.Too much weight for the unit.
If you checked all of the above and the barrel still slips you may be able to take some black electricians tape and wrap it as tight as you can around the "core" of the drive pulley(the pulley at the motor.A couple of wraps is fine.
Sometimes the rollers can get a "slick" on them or even a black film on them.Rough the rollers up a little with some 120 emery cloth or a wire brush.
If you oiled the bearings in the motor you may have got oil on the pulley and belt as well.
I can't think of anything else off the top of my head so good luck!
connrock
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Post by tkrueger3 on Oct 10, 2009 11:50:03 GMT -5
If you determine everything else is ok, but the belt is slipping, a new belt for that unit from the Rock Shed is $1.90 + shipping. I keep a couple spares around for this reason.
Tom
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kalvandian
off to a rocking start
Member since October 2009
Posts: 2
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Post by kalvandian on Oct 10, 2009 21:53:45 GMT -5
hey thanks guys, I decided to try to roughen the rollers up a bit first since that seemed to be the easiest suggestion and it worked! i am so happy its working again.
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Post by rocklicker on Oct 11, 2009 22:36:59 GMT -5
Glad to hear it's working again. I have had something like that happen to me. I got this one tumbler that loves to slip most times I change grits. It starts out sometimes slipping sometimes going, so now I put a shim under one side of the tumbler and it grips and goes. After a few minutes I remove the shim (usually a slab or something) and it keeps going. Go figure. I've tried everything and settled on the shim technique.
Steve
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