Quote: CVPost-richard@lowenthal. (quoted from post at 16:28:20 03/13/23) NJ,
I'm hoping you can help a bit more - you are the only person I've come across who's done what I need to do.
Have you ever taken the rod out of one of these cylinders? It seems impossible to get out the C-Ring that holds the packing. It also seems like you have to do it to get the rod out.
With the amount of oil that is being held by the packing, the piston itself must be leaking a lot.
Pull the rod if you want, but I don't see you gaining anything by doing that. Because you have a single acting cylinder a piston with packing on it, is not needed. The cylinder rod extends as the pressurized oil fills the barrel, since the oil does not compress. The chevron packing under the gland nut does all the sealing.
If you look at the parts breakdown you will see you do not have a piston with packings on it. The cylinder rod (item key #1) has an oversize solid steel end welded to it. it goes into the barrel then the stop ring (item key #8) is inserted and the split ring (item key #6) is installed keeping the stop in the barrel, preventing the rod from coming out of the cylinder barrel. The O-ring (item key #7) seals the packing nut (item key #3).
I will say I am not sure on these Dearborn cylinders, but in some similarly built, the inner land of the groove the split ring (snap ring) is tapered so you can reach in with a punch and tap the ring down out the groove. Once they are a way below the groove, they can be tipped slightly. They can be worked passed the groove as long as you keep them tipped. If you pull them straight out, they will snap back in the groove.
This post was edited by Jim.ME on 03/13/2023 at 02:56 pm.
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