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Restoration & Repair Tips Board

2N hydrolics

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Ryan Hanson

05-06-2008 14:55:50




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I have a 46 2N and i am having problems getting my three point to go down. When i engage the pto it goes all the way up no matter where the lever is. I had taken the pump out and looked everything over and nothing is plugged up. It almost looks like the fork that pushes the control valve does not push far enough, but do not know enough about it to be sure. I have also heard of the relief valve not working but again do not know enough about how it works to get to deep into it. It did work as of a year ago but just got it back out to start restoring it. If anyone has any hints or leads i would greatly appreciate it. Thanks, Ryan

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Ryan Hanson

05-07-2008 13:41:22




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 Re: 2N hydrolics in reply to Ryan Hanson, 05-06-2008 14:55:50  
Sean, my lever does go all the way up and down as far as it supposed to and i even went as far as to slide the arm block forward to see if that would do anything. Soundguy, I had taken the cover off both sides and when i moved the lever it did move the fork but it just does not seem to be pushing that control valve enough. As far as i can tell there is no adjustment for it. Nothing is cracked on the pump. It brings the 3pt up as soon as i engage the pto. It just will not release the pressure on the cylinder to make it go down. I also have had the pump all the way out and cleaned it up. Thanks for the comments though guys!

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soundguy

05-08-2008 07:34:21




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 Re: 2N hydrolics in reply to Ryan Hanson, 05-07-2008 13:41:22  
If the valve is not moving smoothly.. that is the problem.. it has to close the intake and open the exhaust valve.. evidentally it ain't.

it's a super simple pump design.

soundguy



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sean mcdonnell

05-07-2008 08:02:49




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 Re: 2N hydrolics in reply to Ryan Hanson, 05-06-2008 14:55:50  
You might want to check that you're getting full movement out of the hand lever. Mine had a screw that someone had added before I bought it and I had the same problem. The screw kept the lever from moving all the way to the bottom. Removed the screw and everything is fine now. Just a thought.



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soundguy

05-07-2008 05:08:27




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 Re: 2N hydrolics in reply to Ryan Hanson, 05-06-2008 14:55:50  
You might have actually had some answers by now if you had posted this in the ford 9n2N8n forum.

in any case, remove the right side round dipstick cover.. move the 3pt lever thru it's motions, and see if the control fork does indeed move the t-handle correctly to operate the control valve.. sometimes they get sticky from grit or gunk.

Relief valve bad? A relief valve fails in about 3 ways..

1, fails open... thus you have no pressure and no lift at all... or very little, and weak, if the valve is partially cracked open. You didn't report this

2, fails closed.. and you have no relief.. shock and overloads cause gaskets to blow out or crack pumps.. etc. You havn't reported this circumstance.

3, fails by being weak and opening too soon. Lift can operate.. but has less power as the relief opens too soon. You didn't report this

My bet is the sticky control valve / linkage problem.. etc.

soundguy

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