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Re: Select-O-Speed (SOS) Quick ID, ORC vs DDC

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Author  [Modern View]

04-11-2013 19:31:15

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Read Sean's first post again. I think you're still confusing a part number

and its meaning with the casting number.

Other than that I can't help much. I bought my first SOS last fall.

It does seem that I heard something about a different shape in the case,

might find something on that in the archives too.

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04-12-2013 06:51:23

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 Re: Select-O-Speed (SOS) Quick ID, ORC vs DDC in reply to Royse, 04-11-2013 19:31:15  
Hello Royse , It does not make any difference between Part Numbers and Casting Numbers they both are identified the same way . The prefix c0nn means 1960 tractor , c3nn means 1963 tractor , b9nn means 1959 tractor NN is always tractor the first two are the year always . 7006 is transmission in car , truck , tractor it makes no difference . 6015 is engine block in car , truck , tractor it is always engine block . Example D2NL6015J IS A 1972 INDUSTRIAL 172 4 CYLINDER ENGINE BLOCK CASTING NUMBER . Thanks Tony

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Sean in PA

04-12-2013 14:15:33

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 Re: Select-O-Speed (SOS) Quick ID, ORC vs DDC in reply to TONY JACOBS, 04-12-2013 06:51:23  
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Tony, You have a lot of knowledge, and have helped me and many others, but I think you've got the information about the casting codes incorrect. If a casting code of C0NN means a 1960 tractor, then why do the 1962 S-O-S tractors have a casting code of C0NN on their transmissions? Shouldn't the casting coed on those be C2NN then? You just got through explaining that the C0NN transmissions were used on 1962 tractors didn't you?
My 1973 4000 has casting codes of various years and even a couple of different decades on all of the different major components. My transmission, which has the same 1973 serial number and production code stamped into it as the number on the foil sticker under the hood, has a C7NN casting code, while my engine has a D0NN casting code, yet my tractor is a 1973, and the transmission and engine are both original. The production codes stamped into every major component match the numbers on the foil sticker, yet the casting codes on the various components indicate different years.

I have seen explanations on the web from former Ford engineers that the first 2 characters in the casting codes designate the decade and year within that decade that a particular casting was designed, not when a particular machine was made or when a particular part was cast. A particular casting design might have been used for many years in a row, so it will show up as the same casting number on machines of many different years.

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04-13-2013 07:45:46

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 Re: Select-O-Speed (SOS) Quick ID, ORC vs DDC in reply to Sean in PA, 04-12-2013 14:15:33  
Hello Sean , Thank You , but the casting number and part number info is correct . The C0NN code was used because there was no update or revision until after 1962 . There could be some C2NN codes on other parts less visible then the common blocks , trans. , rear axles we speak of most often but every piece has a casting number(there is C0NN, C3NN, &C5NN casting on Sherman parts)Yes C0NN codes are on the 1962 Blue and Gray tractors but not the Red and Gray ones . If you look at the 310835 and 310837 4 speed and 5 speed trans. cases for the 01 series tractors there is no change from 1958 - 1965 , yet 801 rear axle center housings go from 310363 to 312480 to C0NN4024F , and I know the 310 to 312 was a Metal change from Pearlitic to a Malleable Steel as were 24" wheel centers going from 311701 to a B9NN1036A casting number were steel related because of cracking problems as were the rear axle housings . Casting numbers changed when a casting was revised or updated for some reason . Sometimes the revision was the same year as the original casting or not until two or three years later , so sometimes the prefix changes and sometimes only the suffix changes . Example the C0NN7006B DDC Trans. case has no drain underneath the case but C3NN7006B does have a drain plug under the case , without having all of the original Ford Blueprints I don't know of any other differences but there may be . Example B9NN6015B Block gas or diesel 1959 tractor factory installed spin oil filter adapter , C0NN6015C block gas or diesel 1960 tractor factory installed spin on oil filter adapter , C0NN6015J Block gas or diesel block is now cast for spin on oil filter and used past the end of tractor production in Dec. 1965 . Finally the rest of what you said is also correct which is just what I trying to explain . Thanks Tony

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