Robert: When I turn the spin pulley by hand (in the 'reverse' direction) the tub doesn't budge. However, when I first got this machine, I tried that as part of the machine inspection and I could not make the tub turn by spinning the pulley. When I spin it in the opposite direction, the tub indexes just ever so slightly (which is what happens when agitation engages).
Ben: there is no solenoid (that really makes me scratch my head). The motor doesn't really 'float' - the recoil of that spring mounted bracket seem to keep it in position and it will only move when pushed to the left (this will release the belt).
Joe: I need to get more familiar with the Maytag helical drive - there may be a similarity here! I'll take videos of the washer running in both agitation and spin directions, but I am still at a loss as to what the machine is supposed to do in each direction. Another set of 'eyes' here might help!!
Phil: That spring seems to play a big role, but again, I am not sure what. The spring on the agitator pulley makes me wonder if the whole mechanism is supposed to 'drop' for spin. When I turn the tub by hand I haven't been able to observe what happens under the tub. You are hereby summoned to Ogden... LOL
alr2903: Yes! That piece of metal that jammed the pump is a bracket to hold the water inlet flume in place. It must have worked loose in transit and dropped off after successive moves in and out of an operating 'slot' in the laundry room.
Actually, two pump-related issues preceded the spin issue and in both cases, the washer attempted to spin following the rinse; in both cases the outer tub of the washer was full of drain water from the wash cycle that did not drain out. I have a crazy idea that the excess weight (inner and outer tubs full of water) cause some thing to go out of alignment with the springs and supports. Again, SWAG here, but you never know!! About that yellow spring, I think it is definitely related to the operation of the spin cycle but with no technical or service information about the washer, I can't be sure if it's OK or not. It does look kinda stretched and the bright yellow reminds me of a spring from a farm implement (which, coincidentally, the Beatty Bros. Manfacturing Co who made the Dominion appliances also made).
Thanks for the input, all!! Canyon just stares at the washer and gives me one of those 'why aren't we outside playing' looks. Hubby is in South America, so at least I don't have any 'let's see what happens if we use it as a sled and run it down Miller's Hill' remarks... LOL