My beater bar v-belt doesn't seem to get tight enough when engaged. The beater bar slows or stops when it contacts the carpet, and as a result the flat drive belt spins slower than the motor and friction causes it to overheat and smell like burning rubber. I cleaned out all obstructions so the bar spins freely when not engaged. It seems the belt should be about 1/8 " shorter than it already is. Any ideas ?
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Per owner's manual
1. Make sure the brush control is set on carpet mode.
2. The brush will only spin when the handle is reclined.
The belt has worn out and needs replaced. Although it appears okay, stretching is possible, which would result in too loose a grip to turn the bar.
If the belt was replaced, it may not have been pulled tight enough to turn the bar. To tighten on many vacuums, simply loosen the screws on each end of the brush, pull toward the front of the power head and hold while tightening the screws.
Hello, W/D here. Since the brush will not spin, but the motor works, either the belt has come off of the motor shaft, the belt is worn past it's useful life, or the beater bar has seized. 1. Turn off the power (unplug). 2. Remove the bottom plate. With the plate off, use your finger to test the tension of the belt. It should be tight, and roll when you roll the beater bar by hand. 3. Remove the beater bar and belt. Inspect the beater bar, particularly by the bearings. Remove any twine, hair, etc. 4. Inspect the belt for abnormal wear. If there is any significant wear in the belt, replace it. 5. Reassembly is in the reverse order. Place the belt on the beater bar. While holding the beater bar close to it's position, place the belt on the motor shaft. Rotate the beater bar bearings to their proper position and install the beater bar. Replace the cover plate.
The belt is supposed to be tight, but the beater bar bearings are probably full of string, hair, and thread. Remove the bar, remove, clean, and oil the bearings (3-1 or similar). Leave the belt off for a moment, and install just the bar. Spin it with your fingers--it should revolve freely--if not, redo the clean/lube process again making sure to clean the inside of the bearings with a Q-tip swab. Once the bar spins freely, remove it to slide on the belt and reinstall. Hope this helps!
try ajusting the height if the beater bar also check the belt and motor
somtimes **** gets stuck in the end bearings and add resistance to the beater bar slowing it down remove beater bar abd check assemby for thread and **** build up
Provided that the motor isn't loose, the belt should fit tightly. If you had reassembled the beater bar back in the vacuum improperly, the belt would be tighter, rather than looser. If you are sure that the motor isn't loose and the beater bar was reinstalled correctly, then either tha belt slipped back off the motor shaft, or they sold you the wrong replacement belt.
If the Dyson model has a brush bar control roller at the left hand side of the top hood then it won't be able to be repaired unless its by a Dyson call out or someone who repairs Dyson models with brush control protection.
If the model doesn't have a brush control dial then you will have to change the drive belt:
Easy to do if you flip the machine over with the beater bar looking upwards. Locate the three/two screw heads and undo with a coin. When the roller section is revealed by taking off the floor head you should replace the belt with a new one and be careful putting the beater bar in the right way on both ends. The belt will be tight brand new so expect some tension in it. If this works for you please rate Fixya! Thanks.
on the bottom take out 2 screws they are closer to the back wheels pull off cover there is a plastic cover over the beater bar take off there is a belt if it broke or wore out change the belt that should fix your problem
when you removed the beater brush did you clean all the lint and threads off the ends of the brush? you can unscrew one end of the beater brush plate to clean the crap off it. Inside the beater brush are two ball bearings. Use a light machine oil to lube these two bearings. re-assemble the rod and end nut. then put your brush back in the machine and note which direction the belt needs to be installed. there'll be an arrow on the motor housing.