HWH levelers

dougrainer wrote:

Mandalay Parr wrote:
Also may need to lube the cylinder shaft.

ANY lube is a band aid for the real problem. HWH jacks are immersed in ATF when retracted. Lubing will help for a few weeks and then the seals still cause the problem. Doug

Doug you have described many times how these seals go bad and need to be replaced. What actually happens, do the seals swell causing a tight condition preventing full retraction? What are the seals made from that cause this condition? Is there a different seal material that you know of that can be used to prevent this swelling if that is what is causing this problem? This seems to be more of a problem with the newer HWH systems I don't see this amount of posts on the older joy stick models. Where different seals used, or more clearance between the shaft and seals?