Go BottomNew Holland 3Pt Hitch surge
 | SGTRanger
Join Date: Jun 2004 Posts: 9 WV 
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2004-09-16 96619
I have a 2000 New Holland TC35D. The 3 Pt hitch surges when tractor is running and drops when tractor is shut off. It seems to seep down a bit at full lift as well. I think the problem may be with the pressure adjustment to the hitch??
Can anyone tell me if this sounds right and if so, how and where do I adjust the settings.
Thanks!!!!!!
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley 
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2004-09-17 96658
It could be various things. If it cycles up and down at fairly regular intervals, a leaky poppet valve or improper 3ph linkage adjustment seems a good guess. If the surge or cycling goes away when the flow control valve is turned off then the poppet valve or adjustment is likely the problem. Replacing and adjusting a poppet valve isn't too difficult on most tractors but having a repair manual is a good idea.
A sticking system pressure relief valve can create surges but only during lifts. The valve likely is located in a manifold block on the side of the engine. A pressure gauge and manual procedure is needed for repair and adjustment. A faulty safety relief valve in the 3ph can create drops during lifts. ....
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