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John Deere Tractors Discussion Forum
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6620 steering

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6620

10-17-2005 18:33:16




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Was picking corn today with 6620 turned at the end and steering locked have changed steering valve under cab still with hoses disconnected from steering cylinders can barely turn steering wheel all other hydraulics work fine any thoughts?




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G/MAN

10-18-2005 07:27:20




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 Re: 6620 steering in reply to 6620, 10-17-2005 18:33:16  
I don't do much hydraulic work on combines, but I imagine there's a priority valve to see that steering gets oil before any other function. There just about always is in a hydraulic system. I'd be interested to see if the problem is in that valve. If you have other functions, it's pretty likely that the pump is doing its job.



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lonzo

10-18-2005 00:38:10




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 Re: 6620 steering in reply to 6620, 10-17-2005 18:33:16  
when you loosen the small line on the hydraulic pump with the engin running does any oil fly out ? wondering if the pump is putting out any pressure?



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