Well I cannot get your exact model number to come up, but with these models Maytag has had a lot of transmission problems, and they have built a new high torque transmission for them.

I think the problem could be in your brakes, but whatever the problem I do not think repairing it is worth the cost and effort. There are good prices on new machines that should be comparable in size and features to your model, and a lot more reliable, so I would suggest you take the money you would have spent on a repair and use it towards a new machine. You will be poorer in the short term but much happier in the long term.