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Hydraulic top link

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laboiserie
Join Date: Jun 2007
Posts: 7 Durham, Maine
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2010-04-02          169694


I have a JD 2305 with a backhoe which means that In also have the power beyond installed. Can I use the power beyond to power a hydraulic top link. If yes, what would I need in terms of an actuator?
Depending on responses, I will have more questions.
Thanks. Bob.




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hardwood
Join Date: Dec 2002
Posts: 3583 iowa
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2010-04-03          169697


The Deere Power Beyond models I'm familliar with you have either a power beyond circut or power to the three point hitch lift arms, not both at the same time, you give up one for the other.
I don't have a power top link but they can be done with a split circut in one of your loader circuts or by adding another remote valve to the hyd. system. ....


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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
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2010-04-03          169702


I made my hydraulic top link--two versions. The first was nonpowered; used a ball valve between the two ports of the cylinder to keep fluid at one point or the other. Drawback is you have to raise or lower the 3 pt all the time then reach behind you and operate the valve. It worked ok for a season. Then I installed a rear remote which is the way to go. Later I routed the rear remote to two selector valves which allows me to control 3 other hydraulic circuits.

I think you could install a 4-way valve in between where the backhoe would normally be.

Be careful doing this because you need to determine if the lines to and from the backhoe control valve bank are open center or closed center. If they're open center that means if you install a closed center valve you'll deadhead the pump and blow it apart. Done this before lol ....


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laboiserie
Join Date: Jun 2007
Posts: 7 Durham, Maine
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2010-04-04          169732


Thanks for the replies.
How would I determine if my backhoe valve is open or closed center? ....


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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
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2010-04-04          169737


Quote:
Originally Posted by laboiserie | view 169732
Thanks for the replies.How would I determine if my backhoe valve is open or closed center?


I've read here on TP that you have to reconnect the 2 hoses that supply the backhoe otherwise other things won't work. If correct that indicates to me it's an open center as fluid has to circulate at all times. What happens if the hoses are not reconnected?

....


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kwschumm
Join Date: Feb 2003
Posts: 5764 NW Oregon
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2010-04-04          169738


I believe all compact JD machines are open center but the manual for yours should say so in the spec section. You don't want to run one without connecting that hose between the power beyond outlets. ....


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hardwood
Join Date: Dec 2002
Posts: 3583 iowa
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2010-04-04          169740


A power beyond circut simply takes the fluid supply that normaly operates the three point hitch arms and runs it thru the backhoe circut which has it's own pressure relief valve. When the backhoe is off the tractor the power beyond hoses are plugged back together. The fluid still goes thru them but now the fluid going thru them operates the three point arms, then the pressure relief valve is in the three point. The power beyond as it comes from Deere lets you have either the three point arms or the backhoe but not at the same time. If the power beyond hoses are not connected back together with the backhoe off the tractor you are dead heading the pump without a relief valve, the pump goes kabang, you need a new pump.
I have the third valve on my 4310 to operate a clam bucket on the loader when I use that bucket, other wise it would be the ideal way to power a top link. The outlets are on the rear of the right fender and the control lever is on the front of the right fender, about as handy as they can get. ....


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