Reel lift cylinders on Gleaner platform header

I got air in the lines between the two reel lift cylinders. I have been trying to bleed it out per the book with the bleed screw on the single action cylinder (RH), but cannot get the two leveled out so that they are working together. The RH cylinder does not begin to work until the LH cylinder is halfway through its stroke. Is there still air in the line, or am I missing something else? The fluid coming out of the bleed screw doesn"t seem to be pushing air anymore.
 
Usually you just hold the reel valve until both cylinders are completly up and it corrects itself! When one is all the way up, continue holding valve and other one will come up!!
 
Do they work like the lift cylinders on an AC planter where you have one two way and one one way? If they do,do they have a valve that you close after you "charge the system"? On the planter I know,you just hold the lever til they're both up all the way,then close the valve before you try to lower it.
 
I had an E that would do the same thing, only not as bad as yours. I did like casecollectorsc said - hold the lever until both cylinders raise to full height, then lower to where I need the reel.
 
That's kinda odd. Not familiar with it,but I wonder how it works then? On the planter,the valve is before the two way. The way that one works is,it's only two way when the valve is open. After you close the valve,the oil from the top end of the two way is forced out when you raise it,it passes over to the bottom end of the one way and that's what raises the one way,not the oil from the pump. Then when you lower it,the oil returns to the top of the two way and is stored there.
 
We would just cycle it several times and it would work it out. We would also run the one all the way out, and bleed the other one until it came all the way out.
 
Here's how I used to do it, open the bleeder,hold the lift valve in the lift position expelling oil and bubbles (air) until no more bubbles, close the bleeder and hold the valve until both cyls fully extended. There is a bypass in the top of the primary cyl that allows oil to continue through primary to secondary at full extension, equalizing cyls. If they again get out of whack just raise to the top and hold.
 

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