slides moving

[lee_worsdell]

I have my trailer stored for winter and plugged in for a week at a time. Over that course of a week I noticed my back slide keeps creeping out about 3 inchs. Any ideas what it could be

[wvcampers]

My Cardinal did the same thing. If you have the Lippert hydraulic slide system, the problem is most likely a bad cylinder. The cylinder needs to hold pressure when the pump is not running. When one of them has a internal leak, it allows the pressure to leak off of the whole system. There will be no loss of fluid. You can find a troubleshooting guide on the net. I replaced the cylinder that was bypassing, and the slides all stay in now. I did replace the whole pump system first and it did not help. The cost of the cylinder was around $100.

[ACZL]

No idea on a cause for you, but our old coach did the same thing over the course of it's winter storage. Upon pulling it out of storage in April, cycled things and all okay till next spring.

[drwwicks]

On my motorhome with the HWH hydraulic slides, there are extend and retract valves by the pump. Generally speaking a creeping slide is a bad valve. There are trouble shooting guides to determine which one. But before replacing you can try "flushing" it. Open the relief valve on the expend or retract valve and actuate the pump. That will run fluid through the valve and IF it's some debris, it MAY wash it away back to the reservoir. Big IF and MAY.

If you have slide locks try and use them.

[thomas201]

If hydraulic, try a little purge before you go to the shop. Run out, hold for a 3 to 5 count, run in hold, out hold and back in. This has worked for me, and the slides stay in. If it does not work, you have lost nothing but a little time.

[laknox]

Another possibility is an internal ram leak, a$$-u-ming you have hydraulic slides. Bad o-rings or a scored cylinder, which can cut an o-ring, are the main causes for internal cylinder leaks. Valves, though, are usually the culprit, more often than not. Get one little piece of cr@p on the valve seat and you'll have a small leak. When you're dealing with high-pressure systems (3k psi and up) that leak will literally eat away the valve and/or seat over time. Amazing to see the damage a microscopic leak can turn into.

Lyle

[Halmfamily]

If there hydraulic it's probably a bad valve. Had to replace one on our fifth wheel. The slide was creeping out while driving down the road.