Join Date: Sep 2013
Location: Eastern Arkansas
Liked: 3325 times
I've found it easiest to sit the cylinder in my lap, compress the rings with my fingers, and get the piston up into the cylinder. Then I slowly push the cylinder back out until the wrist pin hole is clear. It's VERY precise placement to get it there without pulling the piston out too far where the rings clear the cylinder and pop out, but if you get it just right you can then slide the cylinder and piston together down over the studs and slide the wrist pin in and push the cylinder down over the piston.
That works on a 500 and 420. Didn't work on my buddies Rincon so I just cussed and fought it for hours before I finally got it in place. That one I had to put the piston on the crank and try pinching the rings together and then push the cylinder down over the ring. An extra set of hands would probably have made it much easier.
You need oil, oil and more oil on piston and cylinder walls.