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Ford 9N, 2N & 8N Discussion Forum
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naa hyd just stopped working

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ray

05-11-2004 06:45:02




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I rebuilt the hydraulic cylinder on my golden jubilee and the hydraulics was working great. After disking for about two hours the hyd lift just stopped and now after sitting overnight will not lift at all…the oil level full, the pump is pumping as good as it has in the past. Any ideals will be greatly appreciated




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Mike OH

05-12-2004 05:48:19




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 Re: naa hyd just stopped working in reply to ray, 05-11-2004 06:45:02  
Ray, I had the same problem after I rebuilt my hydraulics on my Jubilee about 10 years ago. I was disking a new yard for my neighbor and all of a sudden I couldn't lift my disk. Had to drag them all the way home. Took the top cover off under the seat and found the gasket had blown. Installed a new gasket and it has been working great ever since. Could be something else, but I would bet on the gasket.
Good luck.

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Steve IA

05-11-2004 12:25:49




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 Re: naa hyd just stopped working in reply to ray, 05-11-2004 06:45:02  
Is the little position control lever pointing up?
Steve NAA 111443



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Ray

05-11-2004 14:31:06




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 Re: Re: naa hyd just stopped working in reply to Steve IA, 05-11-2004 12:25:49  
yes...took the disk off and the arms will raise about 2 inches and stop...and system is full of oil



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souNdguy

05-11-2004 07:24:22




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 Re: naa hyd just stopped working in reply to ray, 05-11-2004 06:45:02  
Are you sure the pump is primed?

Try pulling an inspection cover and look for oil squirts and swirls.

Did ya change the oil during the repair?

Soundguy



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ray

05-11-2004 08:32:22




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 Re: Re: naa hyd just stopped working in reply to souNdguy, 05-11-2004 07:24:22  
yes pump is primed, no oil squirts at all, oil was passing by the lift piston that is why I rebuilt the system..yes changes the oil....this has got me



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souNdguy

05-11-2004 10:40:46




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 Re: Re: Re: naa hyd just stopped working in reply to ray, 05-11-2004 08:32:22  
Well.. if the pump is primed.. and there are no leaks.. then has to be an unloading valve problem I would think..

Soundguy



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