There are three heads available for the Dpa 3 cyl. One has six drilled and tapped ports. Three are plugged. Second is the Roto Diesel version used on small John Deere German built tractors. These heads are hard to come by and priced like wise. The ports are turned 30 degrees from the Ford version. The last is of coarse the Ford style. I learned this the hard way by buying a ford 3 cyl. pump core and putting the head in a John Deere Roto Diesel pump. I built it, tested it, and shipped it off. Then I got a call from the owner saying he couldnt get the lines to fit. So I then had to find the correct head and build him another pump. So now I am smarter, and have Two Ford 3 Cyl. pumps here rebuilt and ready to go if some one needs one,,,, or Two!! Check n see. You may have the JD style head in your housing . They both are clock wise and work the same except port location. Good luck,, Al
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Today's Featured Article - Tractor Profile: Allis-Chalmers WD45 (Gas Version) - by Staff. Beginning production in 1953, the WD45 had the same general look as the WD tractor which was produced earlier - but was much more powerful. This was due to the new 4-cylinder "Power Crater" gasoline engine with a 4 x 4-1/2 inch bore and stroke. Some people feel this was one of the most significant tractors offered by Allis-Chalmers in those days. Nothing in its weight or power class could match its performance. In 1954 they began offering the WD45 with the new "Snap-Coupler&quo
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