Slide creeping out while traveling.... again

[cfisher523]

So two seasons ago I had to have the hydro cylinder on the main living slide replaced because the inner seal failed and the slide would creep out while traveling. Now the problem seems to have returned. Any ideas why I would be chewing through hydro cylinders ever 18 months or so?

[dieselguy]

If you have more than one hydraulic slideout ... due to all slides being hydraulically connected together ... any one cylinder's failed ram seals can make the slide with the least resistance work its way out. There is a check valve in the pump unit itself that can go bad as well. Unfortunately only a new pump assy cures that.

[Sierra360PDEK]

I had a 2012 366FL that the dining room slide would creep out. The dealer couldn't figure it out after replacing several parts. A FR tech traced the issue to a bad valve in the bedroom slide. Once replaced never had the issue again. It was a little disconcerting seeing the slide creeping out while going down the road.

[cfisher523]

Suspected culprit... bad hydraulic line. I was able to inspect all the lines today and the one line on the slide that was misbehaving was leaking around the fitting. New line, we'll see how it goes next time out.