I have some friends who just bought a used Bobcat 863 for use on their property. They are good folks but don't know anything about diesels, and I don't know anything about Bobcats. But I offered to do some maintenance on it for them. I have to change out the Alternator and Batt first thing. Any tips? And does the 863 have any oddball things to watch out for? I am not sure how many hours is has on it or how old it is.