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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

AC HD-5G losing oil pressure

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Dozerguy

07-11-2007 05:54:58




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My HD-5 starts great and has oil pressure of 40-50psi. After it warms up, it slowly drops to almost almost zero. I notice no noise change. This happens over a period of 20 minutes. The oil level is full and I notice no loss of oil. I have noticed this after reinstalling the oil bath air cleaner. Coincidental with this loss of oil pressure, the injectors seem to "flood". After shutting down and cooling down, all seems normal again.
Any thoughts about my GM 2-71?

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timg

07-12-2007 16:50:22




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 Re: AC HD-5G losing oil pressure in reply to Dozerguy, 07-11-2007 05:54:58  
Detroit 2-71 will run on 5 lbs of oil pressure. try straight 50 wt oil should run okay. you will need an oil pump and a rebuild in the future.



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hectorgemme

07-11-2007 10:22:52




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 Re: AC HD-5G losing oil pressure in reply to Dozerguy, 07-11-2007 05:54:58  
I am not sure but that should be the oil pump probleme.



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