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Restoration & Repair Tips Board

Hydraulics on my ford jubilee

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Ken whitehead

06-12-2012 11:51:16

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While raising the lift lever the lift arms raise smoothly, when you stop the lever the lift arms auto matically stop them abruptly fall several inches them raise back to the original stopping position very fast, vert violently over and over until you lower the lift lever ask way down to the down position. Can anyone tel me what is causing this.
Thanks ken

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06-12-2012 12:03:03

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 Re: Hydraulics on my ford jubilee in reply to Ken whitehead, 06-12-2012 11:51:16  
If you"re in Position Control mode on the lift, you most likely have a leak and the position control is trying to hold position so it keeps readjusting the lift. Fix the leak and the problem shoul go away. Most likely the lift cylinder is leaking( cracked cylinder, worn piston seal, scorecd cylinder, etc) or the relief valve has some stuff holding it part way open, etc. Open the side plate and look and see if the cylinder/piston is leaking when this occurs.

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Ken whitehead

06-12-2012 21:05:54

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 Re: Hydraulics on my ford jubilee in reply to Jerry/MT, 06-12-2012 12:03:03  
Thanks a lot, I'll check these out.
Really appreciate your help

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06-14-2012 10:54:11

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 Re: Hydraulics on my ford jubilee in reply to Ken whitehead, 06-12-2012 21:05:54  
i agree with jerry on both counts. post in ford, and you are seeing the bobbing or hunting lift endemic to circuit leakdown and regeneration

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06-13-2012 08:33:05

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 Re: Hydraulics on my ford jubilee in reply to Ken whitehead, 06-12-2012 21:05:54  
Ken if you have more questions the Ford Forum on this site is a better place to ask these questions.

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