Here is the Repair Manual for the Maytag Neptune Front Load Washer and the matching Maytag Neptune Dryer that comes complete as a stack unit(Dryer is above the washer).
These seem to be good units, but I did have to change a few motors/motor controllers for the washer on these as well.
You can order the Repair Manual by clicking the link or the picture.
Maytag Neptune Stacked Washer/Dryer Repair Manual