Hi, your 544 has a German D-239 Diesel engine. The Bosch pump has no bleed screws, just loosen one of the injector lines at the rear of the pump and start engine. Becareful not to come in contact with the high pressure Diesel fuel from the injector line. If after re-tightening the injector line, engine is still not running properly, check fuel flow from tank to fuel filters, then filters to injection pump. Some models had a steel braided fuel line between the injection pump inlet and the last fuel filter. This line can collapse inside and restrict fuel flow to pump. Another problem can be a blocked return fuel line.
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Today's Featured Article - Gatherin of the Orange - by Rick Nikolich. In July of 1998 I was talking to fellow Allis Chalmers collector Mike Schilling about the annual "Gathering of The Orange" AC show coming up in August of 1999. He got this wild idea that we should get a convoy of AC tractors and drive them from Charlotte, Michigan 105 miles to LaGrange, Indiana.
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