choochoorocks
starting to spend too much on rocks
Rock hounding
Member since April 2020
Posts: 181
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Post by choochoorocks on Apr 15, 2024 1:02:05 GMT -5
Hi guys, I just got a used Lortone Qt66. It seems to run fine for a while, but after a few hours starts to make a squeaking noise. Then after several more hours, it stops turning the barrels and just hums. Picking up one barrel, I see that the shaft driven by the motor isn't turning. Any suggestions on how to troubleshoot this?
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dillonf
fully equipped rock polisher
Hounding and tumbling
Member since February 2022
Posts: 1,622
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Post by dillonf on Apr 15, 2024 16:41:41 GMT -5
Did you try tightening the belt?
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Post by miket on Apr 15, 2024 20:04:23 GMT -5
Start with tightening the belt and clean off the shafts.
Lubricate with a little oil.
These are just places to start...
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Fossilman
Cave Dweller 
Member since January 2009
Posts: 20,726 
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Post by Fossilman on Apr 20, 2024 10:46:00 GMT -5
Might have to change out the plastic bearings on shafts, belt might be loose..
Has to be sitting on level table..
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choochoorocks
starting to spend too much on rocks
Rock hounding
Member since April 2020
Posts: 181
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Post by choochoorocks on May 5, 2024 16:22:20 GMT -5
Hm the belt seems fairly tight. It moves about a quarter of an inch when I press it. I'd oiled it too and it still stopped.
I'm not sure how to remove the bearings?
I also tightened the grub screws.
What else can I do?
Thanks!
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JR8675309
freely admits to licking rocks
Member since August 2019
Posts: 807
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Post by JR8675309 on May 15, 2024 6:58:28 GMT -5
How heavy are the tubs? Agree on the above, usually does the trick.
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