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9N Hydraulic Adjustment


 
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Dale Klingbeil
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Joined: 20 May 2010
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PostPosted: Sat Dec 29, 2012 10:49 am    Post subject: 9N Hydraulic Adjustment Reply to specific post Reply with quote

I have installed a new flow control valve. I had the cylinder rebuilt. The touch control was adjusted and the top spring set finger tight as the repair manual states. The arms lift, but will not go down. I have tried to add a spacer to allow the spring to move the control lever fork more. I have not been able to move the quadrant as the manual states with an implement attached. Any ideas or information would be helpful
 
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JMOR
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PostPosted: Sat Dec 29, 2012 11:14 am    Post subject: Re: 9N Hydraulic Adjustment Reply to specific post Reply with quote

Dale Klingbeil wrote:
(quoted from post at 14:49:29 12/29/12) I have installed a new flow control valve. I had the cylinder rebuilt. The touch control was adjusted and the top spring set finger tight as the repair manual states. The arms lift, but will not go down. I have tried to add a spacer to allow the spring to move the control lever fork more. I have not been able to move the quadrant as the manual states with an implement attached. Any ideas or information would be helpful


These two statements are not in agreement with one another: The touch control was adjusted" and " I have not been able to move the quadrant ".
i.e, how else is there to adjust the touch control other than moving the quadrant??
Where is spacer that you added?
I expect that either quadrant needs to be moved forward, the valve is sticking in its bore, the spring from the fork to lift cylinder end is weak, or spring (maybe even fork) not connected to valve. Can you reach in through the side inspection port and move the control valve/fork rearward enough to cause lowering?
 
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old
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Location: Lake of the Ozarks area of MO

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PostPosted: Sat Dec 29, 2012 11:40 am    Post subject: Re: 9N Hydraulic Adjustment Reply to specific post Reply with quote

You do know the 3 point is hyd power up and gravity down so if all you have it the 2 arms sitting there they are not likely top go down on there own unless you have something on them to pull them down
 
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HCooke
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PostPosted: Sat Dec 29, 2012 3:48 pm    Post subject: Re: 9N Hydraulic Adjustment Reply to specific post Reply with quote

"I have tried to add a spacer to allow the spring to move the control lever fork more"

If wrong I apologize, but I think a tighter spring would cause the lift to raise, not lower. Try loosing the main control spring just a tad.
 
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Dale Klingbeil
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PostPosted: Sat Dec 29, 2012 7:32 pm    Post subject: Re: 9N Hydraulic Adjustment Reply to specific post Reply with quote

I did set the quadrant in the static state. However, the manual states that with an implement installed the touch control moved in the downward direction, that the lift arms should start to lower. I agree that I should try to observe the control lever fork while the implement is up and move the quadrant forward as you suggest. I believe that the control valve is free, but this is a good check as long as I have the cover off and can observe.
Thanks very much for the help and support.
 
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ZANE
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PostPosted: Sun Dec 30, 2012 7:38 am    Post subject: Re: 9N Hydraulic Adjustment Reply to specific post Reply with quote

There is a spring that goes between the end of the ram cylinder and the center/knee part of the two long control arms that go from top to bottom. If this spring has become too weak to move the control valve that couls be your problem. Remove the right side inspection plate and remove the spring and cut some of it off to make it stronger then replace it.

Zane
 
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