Case 500 diesel in oil pan

Bill from Scotland · Jun 26, 2019

My Case 500 is leaking diesel into the oil pan and diluting the engine oil. Im guessing its a seal in the fuel injection pump. Is the a easy fix? Is anyone able to post a picture showing the part I need to replace or talk me through what needs done. Am I correct in assuming I should be able to get a replacement seal from a local seal supplier.
Many thanks
Bill

Dieseltech · Jun 26, 2019

I'm guessing you have the American Bosch PSB injection pump, if so the seal on the gear pump bolted on the side is where I'd start. Remove the pump, then snap ring and drive gear. The AB seal number is PK 7910. If it still gets fuel into the oil after that seal is changed there are three head O rings that can cause it too.

Case 500 diesel in oil pan

Bill from Scotland

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Dieseltech

Well-known Member

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