Sorry no model no. About 5 yr old with the closed back except for the lower plastic access panel like on WMA. Pulley is plastic and held by hexagon head bolt. Old belt was a bit frayed, had popped it back on a few months ago and returned yesterday with new (pattern) part from M’pt. as customer had rung saying off again. Today got message saying the new belt had come off. It was an 1150 where the old one was 1158.
I had checked for a spider fracture and found none, bearings fine. Could the plastic pulley be distorted? Or is it perhaps a jumping motor due to a connection somewhere? It worked smoothly when I was there. Drains fine, too.
Mike.