I replaced the main drive belt when it slipped over the end of the motor shaft, but problem still persists. Is there a part that fits on the end of the shaft or is there a way to stop the belt from coming of the end of the motor shaft?
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Re: Belt Keeps slipping off shaft
If this is a new belt that keeps coming off, then if not catching something in the roller like a scatter rug, etc then the belt isn't tracking true. The pulley may have come loose for one thing, something has to be off to have the belt come off. Does it come off almost right away, or after some uasge?
The belt started to slip off the main drive belt to my U6420-900 this morning, and after reinstalling it a couple of times, it came off again.I tried a new one, but after approximately 7 minutes of operation, it also slipped off. After I read your similar problem with no solution, I started to check the alignment of the wheels, the roller, etc. then I noticed that the belts after a certain amount of use, they stretch, and become loose, I compared it to a new one and found a difference in size. My solution was very simple. I took the old belt and cut off a piece of approximately ¼ inch, and then I reattached the ends by using industrial glue (Ethyl Cyanoacrylate). After approximately half an hour I finished vacuuming my entire house the vacuum cleaner is still working.
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Hello! There is no other part that goes on the motor shaft after the belt is put on. The tension of the belt keeps the belt from slipping off. If you have a brand new belt that keeps slipping off you may not have the correct belt for the vacuum. Be sure you replace with a genuine Dirt Devil belt and the specified belt style for your particular unit. Hope this helps! If you still need assistance feel free to reach out to us here on Fixya, Facebook.com/dirtdevil, or Twitter @DirtDevil.
Hi There, Most likely 1 of 3 problems. 1. The belt is stretched and so is just slipping off Solution change the belt 2. THe brush roller has siezed bearings so brush cant turn properly so belt is slipping off the shaft. Solution - check see if roller turns easily by hand if not change the bearings. 3. THe motor has twisted in its body due to cracked housing or worn rubber seats. Solution- Depending on your skill and age of vacuum replace the housing or the vacuum.
It could be an old belt even if the upright is new. Check that the beater bar is not clogged with dust or threads and find a replacement belt for this vacuum and fit it to see if there is any difference. If not, then there's a problem with the vac and it should be returned.
- NO WAY AROUND THE END OF THE DRIVE SHAFT TO REMOVE DAMAGED BELT.
Following the belt replacement instructions in the manual, I removed the three screws, took off the base plate and removed the brush roll, slipping it out of the belt.
Up and somewhat inside the plastic housing I could see the other end of belt going around the drive shaft.
But the shaft had no gap around its end to allow removal or replacement of belts. It extended from the motor completely across the space and against the plastic housing.
I dismantled the housing until the end of the shaft was accessible and found that the problem wasn't the shaft moving out of position.
The problem was that the bushing mounted on the end of the shaft for the belt to ride on had slipped over.
I applied some LokTite green threadlocking adhesive (though neither the shaft nor the bushing are threaded) to the shaft, slipped the bushing all the way onto it and put it all aside to set up.
Finally I reassembled the machine with a new belt in place, plugged it in, crossed my fingers and hit the power switch.
It worked like new! FIXT! And I had only one screw left over. It was a small one too, so I doubt if it was important...heh.
Does your machine have a slipped bushing? You may be able to fix it without taking it apart any more than for a normal belt replacement. Try using a rubber or plastic-tipped forceps or pliers move the bushing back into position. Be careful not to mar the metal as it will chew any new belt to bits in seconds. If you are able to move it, put on a few drops of LokTite, epoxy or some other adhesive to keep it in place. You may be able to avoid sending your vac to the shop for costly repairs.
Your belt is slipping, it is probably stretched and slips trying to drive the brush roll. Take the bottom plate off, check the brush also, make sure the ends turn freely. The belt runs from the brush roll to the motor shaft. If you can't get to the motor shaft, then you will have to remove the top cover.