Originally Posted by Fofo
Depending on your differential the pitman arm will have either a crush sleeve, shims, or a solid sleeve. With a crush sleeve you have one chance to set the back lash. This is one of the most difficult tasks that I found at mechanic school to get dead on even with training it's easy to screw up without a lot of practice and it's expensive if you do. My recommendation is price out an axle swap to having the work done.
I didn't know Diff's had pitman arms... this must be something new
If the diff is leaking at the gasket, there would be no need to do an axle swap. Why would you recommend an axle swap??? Not sure what school you went to but make no sense at all...
Also yes, you can get a gasket for the Diff's. Lubelocker makes a diff gasket that can be reused over and over. They can be bought thru most online aftermarket places like 4wd.com I've had mine for about 3yrs now and it's nice not having to mess with RTV and letting it sit/cure.