The Ford Barn

ford38v8 · 11-09-2011, 02:14 AM

Bruce, Improper storage of a gage removed from a car will form air bubbles inside. (The head should always be higher than the sender.) I've tried several methods to remove the bubbles, and have found 37 Coupe's centrifical force method to be effective.

Look at the gage glass closely, and you will see a fine scratch on the glass. This is the factory calibration mark indicating 212º F. When you have removed all air bubbles, test the unit with boiling water to confirm calibration. Install with that mark opposite the 212º mark on the indacator.

11-09-2011, 02:14 AM	#5
ford38v8 Senior Member Join Date: Jul 2011 Location: SF Bay Area Posts: 7,639	Re: 39 Temp Gauge Calibration Bruce, Improper storage of a gage removed from a car will form air bubbles inside. (The head should always be higher than the sender.) I've tried several methods to remove the bubbles, and have found 37 Coupe's centrifical force method to be effective. Look at the gage glass closely, and you will see a fine scratch on the glass. This is the factory calibration mark indicating 212º F. When you have removed all air bubbles, test the unit with boiling water to confirm calibration. Install with that mark opposite the 212º mark on the indacator. __________________ Alan