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JD 7000 planter markers

J

jturbo10

Member
Question on marker cylinder hookup. I"m rebuilding a 1970s 4 row JD 7000 planter. Have everything replaced and working great except for the markers. Can't get them to properly lower and cycle sides. I have all the manuals (operators,technical, parts, delivery) and have worked though the troubleshooting sections but can't seems to find the solution to get them to work. I have not pulled the single action cylinder and actuator mechanism out of the attachment beam yet. On my planter the single action marker cylinder hose is connected to the right side of the large double action lowering/raising cylinder (facing the tractor). I noticed in one of the manuals that the single action hose was attached to the left side of the large cylinder. Does this make a difference since it is a single action cylinder and the cycling of marker is done internally in the square beam??? Just trying to do the simple corrective actions before tearing into the beam. Any thoughts or suggestions would be appreciated.
 
Pull the actuator out and clean the trash out.  Probable a mouse nest in there keeping it from switching.  Lube it good. Operator's manual gives procedure for pulling cylinder out of beam. 
 
Jturbo, you do probably need to fold back the right hand marker and slide out the actuator and clean it. They do attract mice and their nests. However, I do not lubricate the actuator other than with some dry graphite spray such as chain lube. If you lube it too much it will attract dirt and cause more trouble. One thing that many people do not realize on these planters is to keep the marker cables tight enough to where when the planter is raised each marker is tight against the leaf spring latch on each marker. It takes this slight tension to activate the actuator. If this tension is not present you will keep dropping the same marker over and over. Shorten your cables a little at a time at the turnbuckle until the leaf spring has tension on it and your markers will likely work much better. Hope this helps. Mike
 
If you run the marker with the lift cylinder, it has to be on the hose that lifts the planter. I've changed mine to be separate so I don't have to lift the planter to cycle the marker with the alternator misses. And so I can get the marker to the ground faster at the beginning of the row.

Gerald J.
 
Thanks for the great tips. I will definitely pull out the actuator guts and lube per the service manual. I suspect you guys are absolutely correct about the tension as mine acts as described. I would use a separate hydraulic system for the markers but I want to use my JD 3020 for the retro look but it only has a single hydraulic coupler. My JD 630, JD 850 and JD 50 also only have a single double action coupler. I could use my IH 3588 which has triple outlets but that would be overkill and I don't want to mix Red and Green implements in the neighborhood. It is a John Deere planter and deserves a Green tractor to pull it. LOL Thanks for the help. I'll try to take a couple of pictures of the setup and post them when I no-till my soybeans after getting the wheat combined. Have a nice weekend.
 
My JD 7000 hasn't complained yet about being pulled with my MF-135 toting my home make sprayer for putting down 32% along side the row. My JD4020 won't drive a straight line and takes lots of gas while the 135 loafs and I can drive it in a straight line. I just can't load the sprayer tank past half full.

I cheat and use a trailer ball hitch to keep the planter markers from steering the planter.

I'd show a picture but the management won't allow me. I have before.

Gerald J.
 
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