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Case Tractors Discussion Forum
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High Pressure 970

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rrbusb

07-05-2006 18:15:12




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Was spraying with 970 Diesel Powershift the other night, when it started hammering, I had noticed more blow-by earlier, but blamed that on still having winter fuel. Pulled to the end of the field and pulled fuel off. Shut down then boom, and smoke rolled under hood and into cab. It had built up pressure in crankcase and the boom was the dipstick blowing out, releasing pressure. Let her cool down, and sounds ok, but still seems to be building up pressure. Any ideas? Plugged oil galley? Help will be appreciated.

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Erik OK

07-06-2006 18:54:25




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 Re: High Pressure 970 in reply to rrbusb, 07-05-2006 18:15:12  
We had the same thing on our 2090 one time, had some broken rings allow pressure to build in the crankcase and boom, we couldnt find the dipstick.
We ended up replacing a sleeve and piston.



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Tim Pennell

07-05-2006 21:39:12




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 Re: High Pressure 970 in reply to rrbusb, 07-05-2006 18:15:12  
Is the crankcase ventilation system plugged perhaps? If not then it could be ugly :o(

Cheers
Tim



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John Saeli

07-05-2006 18:48:21




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 Re: High Pressure 970 in reply to rrbusb, 07-05-2006 18:15:12  
Don't sound good. Broken, or cracked Piston. We just went through it with an 1175. Cause was a faulty Injector.



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