The cut-in is preset internally to the governor, something like 15 psi under the cut-out. All you need is a flat screwdriver and a good small crescent wrench. Once you find the air governor there is usually a rubber plug on the one end, it sticks onto the adjuster screw. Hold the screw with the screwdriver, stick the crescent on the jam nut and break it loose, turn the screw til you have it where you want it, tighten the jam nut back down. Which way is which as far as higher vs lower cut-out I don't know, I had to adjust a brand new air gov once, the jam nut wasn't tight, and about 500 miles down the road I noticed it was pushing 140PSI. But it seems to me that extra 20 psi was something like 1/4 to 3/8 or a turn of the screw.
As for checking your gauges, look around your truck for a misplaced valve stem. If you find one, check it with a known accurate air gauge.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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