I have a 2009 Sierra by Forest River 335QBQ. It has 4 slides. The slide out on the fifth wheel end (bedroom) drifts open while the camper is just sitting there. It is connected to power. The slide outs do not work independent of each other. As one reaches it's final position the next starts to move. It's not like a could block a valve to the affected slide and stop it.Any ideas????Thanks

Sounds like a hydraulic check valve is letting fluid seep by and allowing the slide to extend. The quick fix is to get a pair of these locking poles to keep the slide closed.Our last Terry came from the factory with these poles to take the pressure off the mechanism keeping the slide closed when going down the road. Just have to remember to remove them prior to opening the slide.

A previous 5th wheel trailer we had would creep out. Didn't notice it sitting till the 1st trip when I checked the outside mirror. Lordy it was out about 10" or so. I broke the wife's broom stick off to the right length where it would wedge in at the top/center inside the trailer and hold the slide in. After the trip I made a better pogo stick. Years back many 5er trailers with a slide or tip out came with a pogo stick from the factory to keep the slide out in while traveling.

We use two pogo sticks to keep the slide in even tho it is electric.

JIMNLIN wrote:A previous 5th wheel trailer we had would creep out. Didn't notice it sitting till the 1st trip when I checked the outside mirror. Lordy it was out about 10" or so. I broke the wife's broom stick off to the right length where it would wedge in at the top/center inside the trailer and hold the slide in. After the trip I made a better pogo stick. Years back many 5er trailers with a slide or tip out came with a pogo stick from the factory to keep the slide out in while traveling.We had a 1998 Holiday Rambler Alumalite that came with 2 slide out enforcing bars that had a tensioner built in.There was a piece of steel plate on the backside of the slide room that these set on

BurbMan wrote:Sounds like a hydraulic check valve is letting fluid seep by and allowing the slide to extend. The quick fix is to get a pair of these locking poles to keep the slide closed.Our last Terry came from the factory with these poles to take the pressure off the mechanism keeping the slide closed when going down the road. Just have to remember to remove them prior to opening the slide.Are you saying the residual pressure is causing it to move? Seems like the pressure would equalize at some point and movement would stop.I agree locking poles, Pogo sticks or some other type of pole will stop movement. it did not do this when we first bought it. The rear slide (2) is a bunkhouse so there is no way to get back there once slides are pulled in.I've never had any trouble with it moving while traveling.

Slide out drifts open | Good Sam Community

ChuckSteed
Explorer
Jan 07, 2021
Page 6 of this manual from Lippert will help your further.

https://lci-support-doc.s3.amazonaws.com/manuals/slideouts/ccd_0001617.pdf
jaycocamprs
Explorer
Jan 09, 2021
todd j wrote:

Thanks for your reply. I'll try purging air out this weekend. I know it's not an external leak on cylinder because no sign of fluid anywhere. Could be an internal leak. I'll see what happens after I cycle the slides in and out a few times.

That's what our was internal on the bedroom. But they both would creep out
94-D2
Explorer
Jan 09, 2021
My trailer has coroplast closing off the undercarriage. If you are insulated, any fluid leak could be masked or absorbed by the insulation batting. There is a feed and return line for each cylinder with 3 threaded fittings for each. So that is 6 per cylinder. If only 1 slide is slipping, then that is a starting point. Also, in a sealed system, if you are low on fluid, it is going someplace, indicating a certain leak. Remember to check the level with everything retracted, including your hydraulic landing gear. Shouldn’t be any air in an already operating system unless it was opened, or a worn part/seal. Good luck!

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