Re: Hydraulic Cylinder Seals for a Front Loader

Posted by janicholson on March 27, 2005 at 05:53:10 from (66.173.50.71):

In Reply to: Hydraulic Cylinder Seals for a Front Loader posted by Bill Healy on March 26, 2005 at 18:32:54:

If the cylinders are bypassing the pistons (leaking down) then one of two things arepossible. If your loader is equipped with single acting cyls (probable) then eventually the oil will start comming out of the piston rod seal at the "top" end of the cyl. These seals are designed to limit dirt intrusion into the mechanism. if they are two way the oil will stay inside but the loader will drop. The guilty party either way will be the piston seals (often leather) that trap hyd fluid under them and are similar to the leathers on a bicycle pump. If the leathers are worn (collapsed/stiff/or torn, I have had success finding them at water well repair supply businesses. If they are showing signs of abraision or scuffing, the finish on the cylinders may be pitted or scored (pitted comes from rust and non use). This must be repaired first or new leathers will be a waste. some situations are not repairable unless new barrel material is purchased , polished, and installed. If the tube is good new aluminum pistons with three oring grooves can be made (contact a local machine shop, or tech school! L O persistance.
JimN

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