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So the washer tries to balance the cycle as much as it can. There is a sensor clipped onto the motor and if the motor is struggling too much it'll try to rebalance the load again. This feature stops the washer from tearing itself apart and the tub won't get so far out of balance that it's banging into the dispenser or whatnot, but shaking quite a bit or drifting it's really something it'll prevent. For those issue, either the shocks are wearing out and need to be replaced, or the washer isn't level and the feet need to be adjusted and locked to keep the washer level, or you the feet just don't grip well with your floor so it walks when it vibrates. Some surfaces are better than others for friction so if your washer is walking and the shocks don't seem to be a problem below the washer and the unit is level, then get some coarse sand paper like 40 grit with adhesive on the backside from your local hardware store. Cut 4 round 2" circles and stick them to the floor below each foot. This will stop the washer from walking.
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