I had one exactly like that one for a while... Took the motors off and over to a local electric motor shop and the "big" motor I wasn't worried about so much, can be replaced with something newer (I had something in the attic at the time that would have been perfect) but the other motor that spins the valve itself was junk. It worked intermittent for me, biggest thing it needed (I thought ( was to dismantle it and completely clean out the years of buildup, a new cord and maybe some new brushes and bearings. All stuff that can be matched up once pulled apart. But when they came back with a quote for $400 to send the armature to somewhere in Wisconsin to be rewound, I said " forget it" so mine went across the scale unfortunately.
