Posted by Bob M on January 20, 2014 at 20:05:26 from (69.207.86.40):
In Reply to: Case IH Temp Gauge posted by DanMD on January 20, 2014 at 19:00:29:
Your gage calibration sounds about right.
Since the SMD has a 15 psi pressurized cooling system, the coolant is not considered "hot" until it reaches boiling temperature at operating pressure - about 225 deg or so with straight water, or about 240 with 50:50 antifreeze.
So for your gage a reading near at the right side of the "U" is about what I would expect with the bulb immersed in boiling water. (Your 962 ft altitude pressure is not enough to make a significant difference....)
Unfortunately the gage is recalibrated/sealed at the factory - it cannot be field adjusted.
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