Re: bad bearing on kenmore whisperbelt beater brush.
I thought this was a free forum. I do not intend to hire a bunch of experts to find out if a bearing can be found for my vacuum cleaner when the entire brush assembly in $39.99.
This is a very tricky way to get unsuspecting people sucked into paying for something they thought was free.
Bad business, sorry.
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Shane: Unplug the machine and lay it on it's back with the handle release in the release position (the vacuum head should be laying flat also). Remove the foot plate from the vacuum head. Manually turn the brush roll (called a beater bar). The beater bar should turn fairly easily and the belt should turn the motor armature shaft (now would be a good time to check the inside surface of the belt for grooves or damaged spots which would cause the armature shaft to slip on the belt). If the beater bar has too much resistance to your turning it, I would suspect that the bearings at each end of the beater bar are fouled with hair, carpet fibers and string. Remove the beater bar from the machine and manually spin the motor armature shaft (where the belt contacts the motor) to see that the motor armature shaft spins freely. Remove the bearings from the end of the beater bar (they won't come off easily so you may have to use a prying tool such as a screwdriver). Try to spin the bearings. If they are fouled, dribble some rubbing alcohol into the bearing (I use a spray bottle... it's much neater) and turn the bearings while keeping them soaked with alcohol until they spin freely without ratcheting. Drop some 30 weight engine oil into the bearings until they are saturated, then clean the outsides of the bearings with a clean rag (no alcohol) until the outsides of the bearings are completely dry and no oil drips out of them (don't want the oil to attract dirt). You'll probably need to replace the belt. Reassemble the machine and it should work for you.
Unplug the vacuum and lay it upside down on some newspaper. Remove the sole plate (bottom plate) with a screwdriver. Pull straight up on the brushes (called a beater bar) and remove the beater bar and belt. Remove the end caps and bearings from the ends of the beater bar (it may take a 2-grunt pull, or CAREFULLY pry the end caps and bearings from the beater bar with a screwdriver) Don't stab your hand with the screwdriver... That HURTS! Once you have the bearings and end caps off, remove the hair, carpet fibers and other gunk from the ends of the beater bar, end caps and bearings. Dribble a little rubbing alcohol on the bearings in the end caps and spin the bearings to clean them... keep dribbling alcohol in the bearings until the alcohol draining from the bearings is clear. Dry the bearings until there is no alcohol in them. Now would be a good time to check the opening in the vacuum head and the hose going into the body of the vacuum for clogs. Reinstall the bearings and end caps on the beater bar and reinstall the beater bar with a new belt in the machine. Reinstall the sole plate. Your machine should run like new.
Turn the machine upside-down and see if you can turn the beater/brush bar with your hand. You should see the brush turning and feel the resistance from the motor. The brush/beater bar may be binding, and what you are smelling is the motor shaft spinning against the rubber belt. You can remove the base plate and check the brush/beater bar with the belt disconnected. If the brush/beater bar is difficult to turn, you need to remove the brush/beater bar and clean the bearings at each end, Remove any threads that are wound around the beater bar ends so that the bearings roll easily and smoothly. Check to see that your machine is not set too low for the surface that you are bacuuming. While you have the belt disconnected, check thi inside surface to see if the motor shaft has been spinning against the belt, you'll see the damage to the inside circumfrence of the belt.
the beater bar bearings are likely clogged with hair or carpet fuzz... without the belt the beater bar/brush shouuld rotate smoothly .. if it is hard to turn then remove it and unwind all the stuff wrapped around its bearings (at each end) ... make note of how it was mounted so you can replace it the same way ... sometimes it takes a little fiddling to get all the stuff out thats wrapped around the ends .. also remove all the stuff captured by the brushes .. a pocket knife helps a lot to do that ... once its all cleaned outl, make sure the end bearings work freely .. reassemble and it should work great ... if you have trouble doing that then you can look for a vacuum cleaner repair place near you ... its too bad not every area has such nice people as the one near here ..
More likely it is the beater brush which is jammed and not turning. Turn the machine over and remove the bottom plate. Unhook the drive belt, then try to turn the beater brush--it is likely bound up with string, thread, and hair. Try turning the machine on once--if the motor spins and makes vacuum, it is probably ok. Remove the brush assembly and clean it of debris. Clean the end bearings with a Q tip and WD40 oil, then wipe clean with another Q tip. Oil the bearings with 3-1 or other light oil. Check the belt for a badly burned area--replace if necessary. Slide the new belt over the brush and motor shaft, then drop the brush with bearings into the case, and check rotation. If ok, replace the plate and test on your floor. Hope this helps!
the string bound up the beater bar (brush), keeps the belt stationary, and the motor spindle is just rubbing against the belt and melting it. remove the belt guard, remove the brush, and the belt. clean off the brush bearings (at the ends of the brush) of the string and make sure the ends spin freely from the brush. replace the belt with a new one, and put it all back together.
Another potential problem for the increase in difficulty in turning the beater bar (drum) could stem from extremely dirty bearings, located at each end of the beater bar. I've seen hair knotted up to the point it chokes the bar and significantly reduces its ability tpo turn.