Hi Eddie, from the CNH parts web site: http://www.caseih.com/parts/parts.aspx?navid=123&RL=ENNA
Unfortunately B250 is not listed but B275, BD144 and B414 are, so see below for part numbers and serial number ranges.
Is it possible that the shaft is shorter on B250 because it did not have an hour/tachometer on the dash? Hour meter was by injection pump. I know on B275 & B414 Diesels the hour/tachometer ran from an assembly that attached to the top of the oil pump drive shaft.
BD144 Engine: 3043131R93 PUMP PUMP ASSY., oil, Engine serial no. 17289 and above.
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Today's Featured Article - The 8N and the Fox - by Zane Sherman. Dec. 13 1998, Renfroe, Alabama. Last niht I dreamed about the day that I plowed the field of about 10 acres over on what Jimmy and Dandy called the Ledbetter field. I was driving the 1948 8N Ford tractor that Jimmy bought in 48 new This was prebably in about 1951 and maybe even befor the house was built. This would have made me to be about16 years old and I drove the tractor for nothing and would have paid to drive it if I had had any money which I didn't, but neit
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