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John Deere Tractors Discussion Forum
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J.D. 2840 hydraulics

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avresort

07-11-2005 07:47:50




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I have no hydraulic pressure on the remotes. Steering column gets very hot and the steering and three point get jerky. I have changed hyd. oil and filter and saw no change. I have put gauges on the remotes. Any info would be great. Thanks.




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cannonball

07-14-2005 05:26:09




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 Re: J.D. 2840 hydraulics in reply to avresort, 07-11-2005 07:47:50  
might not be the power steering, it might be getting hot cause of internal leak...had 2 that way one was in pto the other was cracked line which broke later...repaired both... use one everday and has over 10,000 hours on it never touched motor..now 4230 thats another story spent over 10,000 on trans work and cannot shift it right yet...they left rockshaft where it cannot be used..could not get anything done...oh well...have 4040 have spent less on than any.....have nice day may god bless

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timjdman

07-11-2005 08:12:31




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 Re: J.D. 2840 hydraulics in reply to avresort, 07-11-2005 07:47:50  
the hydraulic system is a closed center.steering gets priority if your hi system pressure drops below 1600 to 1800 psi.if the steering is hot you probably have an internal leak in you steering column. the reason you have no pressure on scv's is the pressure control valve is shutting off everything past the steering.there are 2 valves and 6 orings in the steering column that is probably taking all your hi pressure oil from the hyd pump and putting back to sump thus causing the oil to heat up at the steering column.

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