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Topic: Vacuum pump, what is it? (Read 1567 times) previous topic - next topic

Re: Vacuum pump, what is it?

Reply #20 –
Quote from: MT Ted –
What part of Montana are you headed? In my coach, theres an auxiliary pump switch by the dock light and over ride switches. I have to turn that little pump on when shes cold. It pumps hot coolant to the front. I turn it on for a minute or two and the heater works fine. Without that little pump it will stay cold.

We're headed to Hungry Horse for the summer.

On the drawing we have, it shows one of relays in  isolator board area to be for the aux pump but that it's only applicable to the U300 series.