I did figure it out. The shaft is hollow inside. When you rebuild the cylinder the last step you need to do is install the piston and shaft into the shell. Push it all the way down and then fill up the shell with hydraulic fluid. Then you install the cap. This is how they are dampening it. When you go up, the fluid is pushed into the shaft, then when you come down the fluid will come back out of the shaft and fill the top chamber up. I like the design of it. But it is the first for me.
thanks for all your help
Just curios on the mast style -I am assuming it's a Triple??????I may have a tech report on this.......Maybe....
the carriage stop may be contacting the second rail. sometimes the p/m tech's will overadjust the freelift chains and this exact problem occurs. eventually it will break the stop off of the rail. there was a problem with the 6 series units mast geometry and adjusting the forks to be off the floor when fully lowered required shimming the secondary cylinders. there is an old service bulletain on this issue. im sure you've already checked this but just in case.