[bikestuff]

Frank,

I have a similar vintage coach and I fought coolant leaks for a couple of years before I bit the bullet and had Newell do the tank replacement.

There is a small chance that there is a leak that can be fixed without changing out the tank. The tube that goes from the tank out the top of the AH box can develop a leak. Roger Berke developed a sleeve that fit down over the pipe and holds a new cap that seals the leak. Rudy (Trainer) is an AH certified repairman. Ask him about this fix. He can give you more details.

In my case, I had the tube leak, but also a tank seam leak. It is a BIG job to take the AH unit out, take it apart and replace the tank. Newell is one of the very few places that are set up to do the job. It is expensive but in my case was a lot less money than replacing the entire unit. I believe that Rudy can also replace your whole unit with a rebuilt one.

My AH leaked when I got the coach and I suspect that the tank had frozen at some point causing the leak.

Good luck!
bill