IRV2 does not allow old threads to be used to add commentary. Here is my question to the referenced thread:
2003 Alpine Coach dash heater core removal?
Thought I would bring this thread back up for another question. My dash heater no longer puts out hot air, so I assume the motor/water valve assembly needs to be replaced (4100663 Acme Water Valve Assembly on the referenced web site). Once again the nuts are not easily available on the inside. I am thinking I will just cut off the bolt heads and use wood screws to reinstall.
I am also thinking about just replacing the core at the same time. In looking at the hoses, they are reasonable flexible at the front of the coach, so I am thinking I may just replace sections at the engine, which I assume are brittle. Seems pretty difficult to run new hose from front to back. Anyone done this?