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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Super 77 engine oil pump

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Randy in Minn

02-12-2005 16:01:59




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Does anyone have the wear specs for the vanes in the engine oil pump. Pulled the pump apart and they look good but looks can be deceiving.




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J. Schwiebert

02-12-2005 16:31:03




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 Re: Super 77 engine oil pump in reply to Randy in Minn, 02-12-2005 16:01:59  
Remember 15-20 psi is all they produce. I think there is a first time for everything, but I have never seen one that would provide the proper flow and volume. Also remember worn rod bearings do not affect oil pressure on those engines. Questions?



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Randy in Minn

02-12-2005 18:44:42




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 Re: Super 77 engine oil pump in reply to J. Schwiebert, 02-12-2005 16:31:03  
The engine has always carried good oil pressure. I have pulled the engine down for a overhaul. I cannot find specs as to the vane width to see how far these are worn. There is still a lot of chamfer on the outer edges left. I was curious if there is a spec on them.



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WFE

02-12-2005 19:44:42




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 Re: Super 77 engine oil pump in reply to Randy in Minn, 02-12-2005 18:44:42  
I've never seen a spec for wear on the vane pump for this series, or for any oil pump for that matter. Since the pump is the first thing to have oil, it should last for a number of overhauls. As long as the springs are okay and the vane housing isn't severely scratched, you should be fine. John brought up a good point, as the rod bearings are not pressure lubricated in these engines and so they don't carry the oil pressure you may be accustomed to with other engines.

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