Servicing waste gate valves ( Greay and black water valves)

You should be able to do the change yourself in less than an hour...both valves. That said, there is a "O" ring that needs to be kept in place while putting the valves in. If one gets sideways, you'll be pulling it off and redoing it, which can be a pain. I put some vaseline on the rings to hold them in place while I slid the valve in and replaced the screws. Worked well....BOL...Dennis