Peter, I am not sure what you mean by the heater quadrant. Perhaps you could enlighten me.
Neil
Assuming you Mog has its heater controls on the dashboard, and not underneath, the silver knob turns a toothed wheel that moves a segmented metal quadrant that serves to act as a lever to pull the bowden cable that opens and closes the water valve to the heater.
As you trun the silver knob it "clicks" through a number of stops, to a total of about 6. The quadrant, which is a segment of a what looks like a 3" disc, moves and it seems can rub on wires.
