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740 heater valve question 700

posted by  Blue Horse on  Tue Jan 6 04:51 CST 2009
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last visit: Mon Apr 8 17:57 CST 2013
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I have three used heater valves from various year 740s with manual heater controls. On all of them, the vacuum capsule and actuating lever work properly, though counterintuitively--vacuum is applied to CLOSE the valve--but when the valve is closed, it is nowhere near air tight. Is this normal, or will it cause the heater to never turn off completely? I only suspect it might be normal because all three valves I have seem to be identical in this regard, and three identical failures would seem unlikely....






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New 740 heater valve question [700]
posted by  Blue Horse  on Tue Jan 6 04:51 CST 2009 >


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