These vacs use Ametek motors which are practically designed to fail.Frequent complaints are a burning smell and louder than usual noise in the canister.The problem is the poor quality bearings Ametek uses in the motors in the units. They have low-end ball bearings with a nylon "crown" that breaks up and gums up the bearing.Further the fan end of the motor is a bear to get to because of poor (intentionally?) design. With great difficulty I WAS able to remove the fan and housing and inspect the bearing.Since finding a replacement is too much trouble or impossible, I cleaned up the ball bearings and switched the bearings on the two ends moving the remaining good one from the brush end to the fan end where I assume the load is. I packed the damaged one with grease. Now the motor runs smoothly. I doubt however this jury rig will last very long. It is very irritating to toss a $80-$120 motor because of a failed bearing.Kenmore and Ametek should be embarassed but I'm sure they are NOT!
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