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CPeter
02-12-2003 12:01:21
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Re: FAMILY OF TRACTORS - M, 40, ETC, ETC.. in reply to Jerry J., 02-12-2003 10:46:22
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The 2 cylinder Dubuque tractors were M, MT 40, 420,430,435,440. All except 435 came in wheel and crawler versions. The 435 was a 430W with a Detroit 2-53 diesel eingine. The 440 was an industrial tractor. I stand corrected on this, but I think it is right. The 420 came in three phases. The first was basically an upgraded 40 which included a water pump, 5 more HP from a larger bore and on the crawler heavier track frames. Phase 2 changes included, different starter mount, two color paint, different centerframe housing which had two mounting points for the crawler side plates, and the option of a directional reverser, 5 speed transmission, and live PTO(?). Phase three has slanted steering wheels like the 430. The sheet metal on the 430 was very different.
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