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ID motor numbers

Yesterday's Tractor Forums
J

jdchevy

Member
A friend of mine has a motor with these numbers. can anyone id them?
a122818.jpg
 
   The top digits "185 220B" is the Waukesha part number.
   The second line "1M100B" is the part number for the casting as it was cast in the Charles City Foundry.

   This crankcase is the earliest one used in the Super 77 tractor.  You will not find this part number in a parts book as it is for the bare casting.  After machining and the main bearing caps were installed and line bored and the front camshaft bearing was installed the part number changed to 1MAS100B.  The "AS" is for the assembly as above.
 
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