Just got my Farmall C running after an overhaul, and its still in the shakedown stage. Had to keep adding oil to the hydraulics. Today, I cracked the top petcock, sure enough she's making oil. Took out about 3 quarts. When I had the engine apart, I bought a seal for the hydraulic pump, when I went to put it in, it wasn't the right one. The part number checked out to the right CIH number, so I think my pump must be another brand. Does anyone know what other brand(s) of pump could be on a Farmall C, so I have somewhere to start. When I had it apart, I saw no marks or brand identification, but it looks different than other IH pumps.