Cable lift is the same set up as the earlier 7000 planters.

Mine is a 7200 standard planter originally the markers were tied into the wheel lift cylinder. Crossing waterways was a pain. Raise the planter the marker came up very quickly, cross waterway,stop, set planter down, wrong marker went down, lift planter and lower again to get correct marker to go down, then go. Lots of wasted time and motions crossing waterways and I did not want to plant through them.

So I removed the T from the lift cylinder and used a single separate hose to control the markers. This way you can raise the planter and leave the marker down through the waterway or cycle the markers independent of lifting the planter.

So basically it is a gravity down and power up function single acting with 1 hose.

Fitting on planter main frame that hose goes in is adjustable but only affects rate of drop not lift speed. Markers go down slow enough. Rate of drop valve on planter was clean and functioning correctly. Flow on 40 series JD outlet was turned clear down to turtle. Still whipped the marker up too quickly for my liking and was hard on the marker bumper stop and marker.

Asked on here and got a flow control valve from Surplus Center that works in one direction only to limit flow. Now marker comes up nice and easy and speed is fully adjustable.

Previous thread with additional links within it so be sure to check them all out.

http://talk.newagtalk.com/forums/thread-view.asp?tid=549000

Here is the flow control valve ordered 2 sizes as I was not sure about flow rate I would need. Smaller one works just fine kept the larger one for a spare.

Here is the valve mounted on planter.

Here is how the hoses get attached to the tractor with a 3 hose setup. 2 blue arrows are for planter lift, 1 red arrow is for single marker hose. ( This is for lever being pulled back for up and pushed forward for down in the cab)

Also the rate of drop fitting I mentioned above.