JD 7000 marker arm failure

Dave H (MI) · May 20, 2016

Just got done telling someone in an email that it is official...absolutely NOTHING works on this GD planter. Not turning out to be much of a bargain, but I have pretty much all of it working now.

So the left marker goes up and down every time you raise and lower the planter. The right marker never moves. Since I have small fields, worst case scenario I plant in a circle pattern, BUT, if anyone has some good insight as to what might need fixing in the actuator when I pull it tomorrow I would be grateful to hear it.

Tech 7 · May 20, 2016

Well the most obvious (maybe) is that the marker has not been unlocked?
More likely is the actuator has a mouse nest in it. You will need to disconnect the cables from both markers, tie a rope to the left cable end, then pull the actuator assembly out of the right end. Blow the dirt out of everything and lube up anything that moves. Stuff it back in, hook up the cables, plant like normal (no circles).

paul · May 20, 2016

What Tech 7 says. Mouse nest.

Paul

Mike Aylward · May 21, 2016

Yes, it could be a mouse nest. Once that is taken care of be sure your marker cables are short enough to put a little tension on the springs on the marker latches when the planter is raised. If there is no pressure the actuator won't switch the markers. Also, when you clean the actuator resist the temptation to lubricate it. They actually work better dry. Mike

rrlund · May 21, 2016

I don't know if that switch works the same as the one on my Allis or not,but mine will keep using the left one and not drop the right side if I hold the hydraulic lever for too long when I raise it. If I just pull the lever in the tractor back to the lock position,let it release by itself when the planter raises,even though the marker is still coming up by itself,it switches OK. If I hold it,or pull it again to try to get the marker up faster,it won't switch. The planter will settle back down just a little bit by doing it the way I do,but it must be the pressure in the planter lift cylinder that brings the marker up the rest of the way.

GordoSD · May 21, 2016

If it's bleeding a lot of fluid, it is a ruptured hose. Otherwise a mouse lives there. You'll need to make a six foot blow gun from some brake line.

Dave H (MI) · May 21, 2016

Well, that was a fairly easy fix once I got it apart. Usual rust issues getting the thing to open up the first time. Majority rules here, it was a big mouse nest right in the middle of the works. Also needed to hold the hydraulics a tad longer than I was doing to get let the cylinder do it's thing the first few tries. After that you could operate like normal. I had brushed it down, then cleaned it all with brake cleaner followed by a light oiling on the moving parts. Works every time now and I very much appreciate the help!

JD 7000 marker arm failure

Dave H (MI)

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Tech 7

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paul

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Mike Aylward

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rrlund

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GordoSD

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Dave H (MI)

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