This is easier. The keyed shaft and coupling are available from the Surplus Center in NE. The only machine work is the 1/2" hole through the coupling. What's not shown is the solid coupling at the front end of shaft. Match the shaft diameter size and one half of the flexible coupling to pump shaft, probably one inch. In fact, everything will probably be one inch except the front end of crankshaft which will be 1.375" (I think). Everything can be done without any tractor disassembly except driving out the crankshaft rollpin.
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Today's Featured Article - History of the Nuffield Tractor: Conclusion - by Anthony West. In the last piece I mentioned that Nuffield had reached the stage where they had chosen to drop the "Universal" from production. The two new models were given three figure numbers, instead of "three" and "four". Model numbers were introduced to help farmers and dealers instantly recognize the engine size and horsepower of the tractor, the 4/60 had a four cylinder diesel engine which developed 60 bhp at 2,000 rpm. The 3/42 had a 3 cylinder diesel engine which produced 42 bhp at 2,000 rpm. Th
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