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Should the lift arms be linear with the control lever?

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Robert

03-07-2002 20:26:12




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I have just rebuilt my hydraulic pump (8N) and also the cylinder. I replaced the piston with the Naa 530 piston. The lift works (lifts) alot better than it did before the repairs. But I have a slight problem though. The lift arms aren't linear with the control lever. I have adjusted the quardrant. There is only a small part of the control lever that will move the arms. I left the inspection cover off on the right side and when I move the control lever (checking the rod that is connected to the control valve) it only moves a small portion which is why the arms are doing like they are. Could the control lever be stripped or worn so that when the lever is moved that the rod only moves a little . I am not sure if the valve is getting a full stroke or not. I also noticed that when letting the lever down that there was a spot that the lift arm would go down real fast or steady and if I moved the control lever down more, the arms would slow down and sorta jump just a little but still continue to go down.It seems like to me that when the control lever is moved, the linkage rod should also move. I wonder if the thang is stripped. Anyway maybe someone on this diss. board will read this and can help me out. Thanks in advance


Robert

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Arne - Mine too

03-08-2002 08:28:20




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 Re: Should the lift arms be linear with the control lever? in reply to Robert, 03-07-2002 20:26:12  
My 8N does this too. The lift operates (lifts from full bottom to full top) in about the first 25% of the lever's travel. I also wondered if this is normal and if adjustment is required. ?????

Arne



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Arne - Clarification

03-08-2002 08:29:50




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 Re: Re: Should the lift arms be linear with the control lever? in reply to Arne - Mine too, 03-08-2002 08:28:20  
I should have said the top 25% of the lever's travel.

Arne



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bg

03-07-2002 20:53:26




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 Re: Should the lift arms be linear with the control lever? in reply to Robert, 03-07-2002 20:26:12  
The control arm only moves a little bit. If the touch control handle is not responsive in position control(selector lever vertical), then I'd be looking at the cam follower pin and the position control linkage and spring adjustment inside. there's nothing to be stripped. The control arm ball end fits in the little socket on the control valve. Assuming the control arm is straight, then that leaves the linkage, cam pin, and the valve itself. It could be sticking, or worn, or the seat could be eroded. I'd vote for the cam follower and draft control and position control mechanism. Manually move the control arm and see if it makes a difference in response. A random thought: did you get the woodruff key back in the touch control shaft?

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rasputen

03-07-2002 20:33:21




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 Re: Should the lift arms be linear with the control lever? in reply to Robert, 03-07-2002 20:26:12  
Robert, No offence intended if you checked all this.
Did you: check & replace the cam follower pin? Is the "little" lever in the position control or draft mode? Is the control rod straight? 'Bout all I can think of right now.
From your description it sounds like you may have checked all this, but you never know?
Good luck,
bd



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The lift arms are moving full length(Robert) Thanks Guys

03-07-2002 20:30:50




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 Re: Should the lift arms be linear with the control lever? in reply to Robert, 03-07-2002 20:26:12  
The lift arms are moving full length. ( Robert)



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what was the problem?

03-07-2002 21:41:56




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 Re: Re: Should the lift arms be linear with the control lever? in reply to The lift arms are moving full length(Robert) Thanks Guys, 03-07-2002 20:30:50  
Just wondered?
bd



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I need som of you older hands to help me with this one PLEASE THANKS GUYS

03-07-2002 20:38:16




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 Re: Re: Should the lift arms be linear with the control lever? in reply to The lift arms are moving full length(Robert) Thanks Guys, 03-07-2002 20:30:50  
THANKS



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