Hyd. oil into crankcase

There are 2 cover seal rings ( 0 rings ) under the cover bearing spring under the cover bearings. There is an oval O ring which serves as the body seal ring. There are also two O rings that are at the hose connection. It sounds like these are the O rings that you replaced.

Where the drive gear shaft exits the pump body is a seal. This is where my leak was, consistant with what you have already been told. IH used pumps with two different types of drive shaft seals. One type used a pressed in seal. Mine on the other hand had an O ring in pump cover. The O ring seals around the drive shaft and is located in a slot cut in the hole of cover. I did not see it the first 3 times I looked for the seal.

My local IH dealer had a complete kit with instruction for under $20.00. It did not take very long to fix and it works fine.

Hope this helps.

My C is doing the same thing, and I came here to search the archives for info on how to service the pump. But first I thought I'd peruse any new forum posts.. thanks for all the info guys.

-- Ken