The electric shut-off has no direct mechanical connection to the fuel metering-valve. It is the metering-valve that turns the injection-pump "on" or "off." So, even if solenoid and swing-arm is working, the metering-valve may be stuck. Just reach and move it by hand and if stuck - break it loose. It is on top of the pump and one of the first things to dry out.
More rare, but the main pump-plungers may be stuck. If so - sometimes you can just free them up with compressed air. Just hook an air-line to one of the injector-line ports, and rotate the pump. When the port in the rotor lines up with the port the air-line is hooked to, that 100-150 PSI will push on those plungers and sometimes free them. Note that cannot be stuck "out" because the cam-ring would push them back in when the pump rotates. So if stuck, they will be stuck "in" and compressed-air and sometimes push them out.
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Today's Featured Article - New Life for an Old Allis - by Tyler Woods. My friend Jon, has an old '39 Allis Chalmers B. He thought it a marginal tractor that had long since served its time. She smoked terribly and never had much power but he couldn't afford another so he was limping along with what he had. Jon's Allis has a small front loader and though it doesn't carry much, it serves his needs. It was the hard starting and low power that made him think it was time to replace the old girl. Jon called me to help him discover why his tractor wouldn't start
... [Read Article]
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