Love my vacuumj. It just recently started making a vibration sound when vacuuming though. It seems to be coming from the rollers. I have manually inspected the roller and it is in good condition. the belt is not worn either. I am concerned that there may be a piece the should be on the metal rod that the other end of the belt connects to....? Right now the belt is just on the metal 'drive shaft' rod and then goes to the roller. The belt does get pretty hot. The rollers do spin I have watched them. I love my vacuum, can someone suggest something?
I don't think you need to worry about the belt going straight onto the motor spindle - this is usually the way they're meant to be. Similarly, belts tend to run a bit warm. You might like to try something to find out which bit of the mechanism is really making the noise. Remove the belt altogether. Grab the end of the motor spindle, and give it a little wobble. While it should be free to turn, you shouldn't expect to be able to move it along its axis by more than a couple of millimetres. There should be even less freedom to move across its axis. Unwanted motion here might suggest a problem with the motor bearings (probably your least desired outcome) If you spin the spindle, it should be free to turn with a gentle whirring noise, but there should be no nasty knocking sounds, and the spindle shouldn't appear bent. Knocking sounds probably mean something unwanted has got into the motor or (more likely) the fan impellor - and are best investigated by taking it all to bits slowly and carefully. If the motor feels and sounds right, reasssemble the machine without the belt and see what it sounds like when you run it. If it's still noisy, then you're back with a motor or fan problem - but one which is speed related. This too is a dismantle and inspect job - check for any evidence of parts rubbing against one another and pay particular attention to the impellor, looking for cracks in the blade roots (especially near the hub). If running the motor without the belt sounds OK, you've isolated the problem to the roller assembly or the belt. See if anything is fouling (ie getting in the way of) the roller. Take it out and check the bearings at either end spin equally freely. Have a quick look to make sure nothing large is missing making the whole thing horribly unbalanced. Finally, reassemble with a bew belt (they're dirt cheap, and it's surprising how many problems they cause even when they look OK). Unless you have to strip the motor and fan, this could all take less than ten minutes. A.
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