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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum

2150 Oil pump pressure relief valve

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toddV8

01-07-2006 18:49:13

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Mr. Star are you sure about your earlier post? I did not open for as I did not have a gasket (ordered today). Upon looking at my Factory service manual Group B10-15-2, it looks like the oil pump probably has a two stage pressure relief. One on the oil pump and the second being the upper right port on this Regulator Valve block... Correct? Upper left being oil source coming from Oil cooler, lower left being Main oil gallery, lower right being piston cooling gallery. Upper right marked as oil pressure reg valve...This is the one you want me to make sure is 9/16" in diameter correct? Why would mine have something sandwhiched between block (crankcase and this alum Regulating valve block) Two gaskets needed. Is this an anti-drainback valve, used primarily before spin on oil filters were installed. I suspect my one NOS part that is milled out accomplished this. Thanks!

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