Hydraulic Cylinders

Here is the level it manual. See page 9 for maintenance.
Level it Manual

Never heard of a hydraulic cyl that had to be cleaned or lubed.
Mine get cleaned and lubed every time they go out and back in.
Been workin for 17 yrs.

Good cylinders are hard chromed and hard chrome is porous. So oil is contained in the plating itself.

Something that could help would be a bellows that would fit the cylinder, like seen on some some struts.

The cylinders on caterpillar equipment are exotic: Double wipers, multi seals including nylon and teflon

With a price to match :(

azdryheat wrote:
I spray mine with a silicon lube.

Per the Lippert manual