If you’re contemplating taking on this repair, welcome to HELL! Some wise appliance techs (hey, is that an oxymoron?) discuss their experiences with this trial-by-fire in this topic and this one at the Samurai Appliance Repair Forum.
You’ll need the hub seal kit, which you can buy here. It comes with complete instructions. The Amana washer service manual is a highly recommended job aid. And an extra pint of blood.
On the world-famous SUDS-o-meter, this job is off the scale.
To learn more about your washing machine, or to order parts, click here.