auxiliary pump switch

[Ralph L. Fullenwider]

rwi:

That switch is only needed in the winter mode to help push the coolant to
the heater cores (3) However, in the FC it
really is not needed, or at least I have not needed it in 8 years and no
problems with chassis heat. The pump is located on the drivers side rear,
mounted underneath the coach to the metal flooring. The Summer/Winter
switch pulls in a Sporlan valve to allow the coolant to flow or if not
pulled in, to short cut the flow only through your water heater.

One might argue that, in summer, on a hot day, pulling a 6 or 7 percent
grade, that your temp gauge rises, you can flip the switch to winter, turn
on the pump, move the chassis heat thermostat to call for heat, thus adding
the cooler coolant in the heater cores to your system and cool the temp
back down on a long grade.

Hope this helps,

Safe travels,

Ralph and Charolette Fullenwider


At 03:45 PM 7/21/2005 +0000, you wrote:
>dose this switch need to be on when the heat selector switch is on
>summer or winter.
>83 fc mich.
>
>

Safe travels,

Ralph and Charolette Fullenwider