D10-D12 numbering system?

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   How where the numbers on the D10-D12 tractors accomplished? Were they random from beginning to end?How were the engines numbered? Were they all D10 or D12 stamped ,or just D10 or just D12 stamped according to each tractor they went on?What serial number did live power start at? Thanks Tracy Martin

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Tracy Martin TN Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: Gallatin,TN Points: 10664	Post Options Post Reply Quote Tracy Martin TN Report Post Thanks(0) Quote Reply Topic: D10-D12 numbering system? Posted: 08 Jul 2010 at 7:41pm
	How where the numbers on the D10-D12 tractors accomplished? Were they random from beginning to end?How were the engines numbered? Were they all D10 or D12 stamped ,or just D10 or just D12 stamped according to each tractor they went on?What serial number did live power start at? Thanks Tracy Martin

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Bob in King NC Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 25 Sep 2009 Location: King NC Points: 2	Post Options Post Reply Quote Bob in King NC Report Post Thanks(0) Quote Reply Posted: 09 Jul 2010 at 7:32am
	Tracy. from many years of working with D10's. I have the same questions. I do know the D10 started at no. 1001 and ended at 10100, but Deans book says that 5304 were produced so ther had to be gaps in serial no's. I do know that the hyd pump was moved to the back of the tractor at serial no. 3501 so this is when so called live pto went into effect. Just my 2 cents. Bobby.

GregLawlerMinn Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Lawler, Mn Points: 1226	Post Options Post Reply Quote GregLawlerMinn Report Post Thanks(0) Quote Reply Posted: 09 Jul 2010 at 9:03am
	I understand that the D10/D12 used the same "block" of Serial Numbers and when a number was assigned to one model, it was not available to be used fro the other model; that is #2500 could be a D10 and #2501 could be a D12 (there would not be a D10-2500 and a D12-2500). From Norm Swinfords Book: Tractor Year S/N D10 1959-1960 1001-INA (Info not available) D12 1959-1960 1001-INA D10 1960-1961 1950-3262 D12 1960-1961 1950-2919 D10 1961-1962 3501-4511 D12 1961-1962 3001-3638 D10-II 1963-1964 6801-7850 D12-II 1963-1964 5501-6144 D10-III 1964-1968 9001-10100 D12-III 1964-1968 9001-10172 Live hyd power was available since the onset with the tractors that had the engine driven hydraulic pump (I have two D12's with this setup). Independent PTO became available in 1961.
	What this country needs is more unemployed politicians-and lawyers. Currently have: 1 D14 and a D15S2. With new owners: 2Bs,9CAs,1WD,2 D12s,5D14s,3D15S2s, 2D17SIVs,D17D,1D19D;1 Unstyled WC

Calvin Schmidt Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Ontario Can. Points: 4526	Post Options Post Reply Quote Calvin Schmidt Report Post Thanks(0) Quote Reply Posted: 09 Jul 2010 at 10:36am
	If you do the math from the chart above and assume the 1959 and 1960 production was continious, there were 4419 D-10's built. The torque tubes are stamped D-10 or D-12 so I'm sure that there could be D-10's and D-12's with the same serial number. What is confusing for some is the engine block flange is also stamped. If the engine number is 10-xxx it is 138cu.in. If it is 12-xxx its 149 cu.in. Some people think that the early D-12's have a D-10 engine because the engine number starts with a 10. I'm trying to figure out when in the 2000 serial number range the paint changed to PO#2 with cream grill and wheels. There are some factory painted bar grills that are correct in cream.
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