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Discussion Forum

D-17 hydraulic problem

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06-20-2000 07:37:15

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I just pulled out my D17 after about 6 years in the shed. Everything is working fine exept the hydraulics on the rear lift arms. When I start the tractor the blade comes up on it's own and will not go down until I shut the tractor off and then it bleeds down slowly. This is a series IV if that makes any difference. Any recomendations on what to do would be appreciated.

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06-23-2000 14:50:00

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 Re: D-17 hydraulic problem in reply to Scootyd, 06-20-2000 07:37:15  
Thank you all. The arm that pushes the valve for implement depth/ traction boost, was stuck. I found this by following the instructions you all offered. After a thourough cleaning / greasing it is good as new. I appreciate your time and help. Thank You.

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Gordon Chance

06-20-2000 18:58:48

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 Re: D-17 hydraulic problem in reply to Scootyd, 06-20-2000 07:37:15  

Karl is right on the cause of your problem. The linkage that controls the traction booster valve is probably frozen from not being used. To get the lift arms to work, push both the traction booster and position control levers all the way ahead, use a 3/16" allen wrench to remove the cover at the rear of the valve and tap the valve spool into the valve body. Just be careful and don't get caught in the lift arm or the blade when it comes down. If you need the traction boost or position control, then you will have to free the linkage with penetrating oil or take the linkage apart if the penetrating oil doesn't work. If you don't need these features, just leave the control levers ahead and the lift will work. I hope that this helps.


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Karl in MD

06-20-2000 18:04:36

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 Re: D-17 hydraulic problem in reply to Scootyd, 06-20-2000 07:37:15  
I think what you have is a stuck position/traction booster valve. If you look up under the hydraulic lever console you will see four valves stacked together. The first two are your remotes, the third your rockshaft, and the fourth valve has no linkage. It gets pushed in by the position or traction booster linkage and is spring returned. I have a 180 allis that had never had it's draft control used, and mine sticks in the lift position if you try to use it. I wish I had a remedy, but I just don't use the draft control. Hope this helps, sorry so windy, Karl

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Jared Smith

06-20-2000 14:06:40

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 Re: D-17 hydraulic problem in reply to Scootyd, 06-20-2000 07:37:15  
hmmm don't know that much about the series IV systems but on mine (series III) the only time the lift comes up and stays up is when the traction booster lever is set all the way up.

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