I have a Linde E-18 purchased new in 2012. At 1300 hours (hours are accurate) it blew out an O-Ring in the manifold under the floor board. Once the repair on this was complete, a lift cylinder seal failed as well. This machine is operated in a clean environment and is not overloaded, or pushed to the max lift capacity.

Anyone have ideas why this is happening?
Lift cylinder has not been repaired, yet. How difficult is it to remove and put new seal in?

This was still under warranty period. However, I discovered that there is no warranty on hydraulics, drive train only.