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OAsontheroad · 01-15-2019, 03:17 AM

So here is the back story. I have a 2008 Nuwa Hitchhiker LSII.

Hydraulics worked well for me on the one weekend I used the RV last October.
While is storage, one side of the living room slides crept out about 3 inches. During winterizing I also removed the batteries to store in my garage.
After manually bringing slide back in, I noticed and took pictures of the Hydraulic Pump area and noticed what I perceive to be hydraulic oil or grime built up on the Hydraulic lines both in and out. If you look close, you can see what kind of appears to be seepage of oil through the coating or membrane of the line itself. Are they worn? or going bad?

The main question I have is: Should I just replace all the lines to new condition? I'm going full time later this coming summer and would rather not deal with a bad line or two of the road.
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twinboat · 01-15-2019, 05:09 AM

If those hoses were bad, oil would be spraying out while the slides were being moved. The pump will be generating 1000 PSI while running.

Spray it all down with a cleaner and hose them off. Run the slides in and out and then look near the fittings and connections, along with the fill cap for leaks.

Sweetbriar · 01-15-2019, 05:36 AM

You could replace the hoses for piece of mind but as Twinboat stated if there was a leak the compartment would look like someone chucked a bucket of oil in to it or there would be puddles on the floor of the compartment.

You might need to replace the seals in the hydraulic valves/solenoids to prevent slide creep. If there's a bit of dirt or such in a seal that could cause leak by and slide movement. Certainly wouldn't hurt to try a clean out with draining and fill as a preventative measure.

rollondown · 01-15-2019, 06:55 PM

It's worth changing out any of the lines that are weeping. With Hitchhiker still in business as Kansas RV Center, they probably have the hose in stock and the correct length.