easy enough. you have to remove the rear fitting [it's the straight one in your pic] you also have to unscrew the eye from the cylinder end shaft. clean all the old paint off the shaft and everything will push out the end. What holds it together under pressure is when you install the lower pin through the cylinder.You'll understand once you get it apart. it might push out a little hard but it does come out the bottom end.the end cap has a o-ring around it,just make sure there's no burrs etc: on the inside of the cylinder tube where the pin goes through. Once you remove that fitting you free up the end cap.If you have any trouble let me know.
I just did the rear one on my modded 1650. At first I ordered the kit from parts tree. I ended up not using anything that was in there. What i did was measure the old ones, thickness and ID. I also measured the OD of the groove in which they went to make sure I had the correct ID of the Oring. I then bought mine from the "Oring store.com". I also bought backer rings. For less than $35 I got enough rings and such to do 4 cylinders. The rod seal/rod wiper was the most expensive part at $9 each I bought 2. They are just plan shaft seals. I plan on doing a write up soon with part numbers to. I also have to do my front/mid lift cylinder.
I stopped today at the hydraulic shop in Carroll and they set me up with everything i needed to do 4 of them all together for $31.50 I was amazed considering what they wanted just for 1 kit So thankful for the suggestions