This is the standard Maytag Dependable care transmission...your problem is not in the brake, but most likely from seized tub bearings. If it were atranny problem, it would not agitate, so you can also rule that out. If there has been any sign of leaking under the machine, chances are the bearing is frozen. In 36 years of servicing this product, I have only had 1 brake failure, so this is not an issue. However, replacing the tub bearing and boot seal is a major teardown, requiring a spanner wrench to remove the basket and the boot stem to do the repairs. The large tub springs also have to be removed so the tub can be lifted out for the bearing replacement.
You can download the Dependable Care washer manual and see how this all works. I doubt you'll want to do this yourself, and be prepared to spend $250 or so to have someone else do it for you.