Couple truck problems at work years ago. 64 GMC 1 ton- very fast idle. Boss said "check it out'. Take off air cleaner to get at throttle linkage, idled right down, drove it around a bit, everything normal. Next morning after first load of freight uptown driver complained about same thing again. After 4 or 5 sessions of this, noticed scratches on bottom of air cleaner. First start in morning driver pulled the choke. When he pushed it back in, long tail on choke cable snagged on air cleaner, bent around, held choke partly closed & fast idle cam stayed on. Repair was to clip off excess end of cable. 64 IH truck tractor, 345 gas. When downshifting pulling a hill, the radio would cut out, finally couldn't move. Ran fine until try to start out, then die again. After calling for help discovered bad motor mount on left side. Torque roll starting out, or shifting pulling a hill, rolled motor to right, battery cable at starter hit frame, shorting everything out. To get moving wrapped leather glove around batt cable, then went to shop for motor mount replacement. MCI stagecoach, air operated aux step at door. Hit the switch it would extend part way & stop, but wouldn't retract from there either. Can't travel with step part way out. Mechanic found bad diaphram in control valve. Rebuilt valve, same thing. Replaced complete valve, still no change. Valve has 4 ports, supply, extend, retract, & exhaust (like return on hyd systems). I was scheduled to take that bus on a 15 day tour the next morning, so went to shop in evening to load my travel gear. Putting our heads together, found the problem. When the first valve failed, someone pinched off & tied the exhaust tube to stop the air leak & put a "do not use" tag on the switch. Open up the tube & everything normal. Willie
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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