Bob,
I took the wheel motor into a hydraulic shop last week. It took them a week to getting around opening it up. They also had a hard time getting the hub off so it wasn't just me!
They said it did not look too worn and just needs a new seal.
Problem is, they can't find the exact specs in order to get the correct seal kit. Does anyone know the model # of the wheel motors used on a 425 built in 2002?