Is there a write up that you know of on the forum for the procedure? I have the service manual but have never drained the coolant before. I read that one of the guys replaced a pump in a parking lot with minimal tools. It sounds like he did it without draining but I am only speculating. My concern is if I put the fluid back in, what is the procedure to ensure air doesn't get caught in the system to eventually cause an overheat? From what I understand in the service manual, the system should force any air into the coolant tank thus pressurizing. So long as I don't open the tank cover, all should be okay. Am I on the right track here?