81 crown. How do I turn off rear heater. Soon hot!

[HunteR0se]

So there is a radiant heater heated by coolant lines and forced with a fan in the rear. The fan is never on but the heater still gets hot as **** because the coolant is running through. I see a large bolt looking thing I line before the heater. Does this thing need to be turned just 90 degrees like a ball valve to stop the flow or does it need to be screwed In or out to stop it? I can't imagine I would have to reroute the lines to stop flow as it gets really hot back there and no one would make something that stayed on constantly like that


Heater model is a bergstrom

[crazycal]

Post a picture. Usually there is a valve coming from the engine. Sometimes it is near the engine, sometimes inside.

[Tango]

The rear heater on my old Bird had a fluid bypass/shutoff valve that would simply cut of the flow to that unit. Look underneath along the lines...you may or may not have one but worth a peek.

[jazty]

Yeh, I would look in the engine bay for some standard water valves inline with the smaller coolant lines. All buses that I've dealt with have them.