Older Amana washers which show leakage at the main seal require a certain amount of skill and special tools for repair. I would suggest against trying this yourself, if only because of the frustration factor and learning curve.
Newer Amana washers are rebranded Maytags, which are actually based on Norge a Norge design. These also require specialized tools.
Maytag wash purchased by Whirlpool recently. New Maytags, perhaps under its various brand names, will probably be badge engineered Whirlpool direct drive models. In other words, if you put the Amana, Maytag, Kenmore, and Whirlpool models side by side, the inherent platform and design will be the same, although styling and features will differ by model.