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Subject: Hydro Pump Casting

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Joel W    Posted 06-18-2017 at 09:47:57 [URL] [DELETE]        [Reply] [Email]  
  • Hydro Pump Casting
  • Image Above is a hydraulic pump casting that came off of 9N496. I find it unique because it has the part number stamped in to it 9N605-A2. Where the drain plug is, there is aprox 1" diameter and 1/4" thick circle that is casted into the cover. There is also a bunch of random numbers stamped into the casting.

    Has anyone seen another one like this? History? Legit hydraulic pump casting?


    Tim Daley(MI)    Posted 06-19-2017 at 07:05:24 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Hydro Pump Casting
  • Ford part number nomenclature for all vehicles categorizes each system within specific numbers. Thus, the tractor hydraulic pump begins with prefix 9N-600, or later an 8N prefix and ends ate #699. Any part with a 6xx number is related to the hydraulic pump excluding any standard or special fasteners. Any suffix after the part number, i.e. A2 defines it as an EC level change and/or optional supplier. That boss tag you show may have thee casting date code on it too -I can't read it. Many Ford parts will have the part number cast raised or cast recessed on them. Also, if a part did not go thru an EC revision, it would still retain its original part number classification. That is why you may see a 9N prefixed on an 8N tractor part. FYI: since there is no such thing as a '2N' prefixed tractor serial number (ALL 9Ns and 2Ns used the '9N" prefix) there are only a few parts that have a 2N prefix -the pressurized radiator for example has 2N cast on the shell. HTH clarify things somewhat...oh, yeah, forgot to mention that he hydraulic pump base and cover as you show are cast aluminum.

    Tim Daley(MI

    Randy(PA)    Posted 06-19-2017 at 23:45:16 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Hydro Pump Casting
  • It is interesting that the 9NBN-605-A1 and -A2 that were released in Sept 1940 used the A1 suffix for the cast aluminum part and the -A2 suffix for the cast iron version. The picture certainly looks like aluminum, though...

    don b    Posted 06-22-2017 at 11:54:28 [URL] [DELETE]        [Reply] [Email]  
  • Re: Hydro Pump Casting
  • Randy.....I will stick my foot in my mouth and say....that cover is NOT the 9NBN-605.I think the 9NBN-605 was a replacement plate,not a pump base. don b

    John in Mich    Posted 06-18-2017 at 14:08:54 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Hydro Pump Casting
  • I am not familiar whether or not that is a "legit" (original) casting but I would suspect that it is. My experiences in manufacturing processes would suggest that there are various stamps used to ID a machine operation, operator or quality
    inspection verification to be able to backtrack any time a problem occurred in the process and isolate others from the same group or batch of material. JMHO

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