Had a 2007 Elite Suite with that problem. I had hydraulic slides and we replaced all kinds of things (rams, solinoids etc). We spent months trying to track the problem down with various dealers with little success. We eventually traded in the trailer to a dealer who said he could easily fix the problem before resale. (he had tried twice unsuccessfully before we decided to trade it in) For about 2 months we wedged a 4X4 between the interior wall and the slide edge to keep the slide from moving out when travelling and lived with the slide constantly in as it would not fully deploy or return on its own. Good luck with your problem. Ours was a Lippert system and they were great suggesting areas to look at and sending parts but we never did resolve it.

I have not had this particular issue but have read about it on the Montana owners forum and recall it has something to do with the Lippert pumps. You might want to do a search over there and see what you come up with.

http://montanaadministrator.forumco.com/active.asp

 

Good Luck,

 

Phil

Steve and Dianne.

Further to the issue check this out on the MOC:

http://montanaadministrator.forumco.com/topic.asp?TOPIC_ID=39095&SearchTerms=slides

Looks like it is possible the check value in the pump.

Les

Since my last posting our sliders haven't creeped out so I didn't get anywhere as far as monitoring the hydraulic fluid level. We made a pit stop on our way back to Canada at Guaranty RV in Junction City Oregon, and their diagnosis is a faulty check valve in the pump. Unfortunately they didn't have one in stock so we will get that taken care of once we are back in B.C.
Apparently some pumps have a brake system in them that can fail but our pump doesn't have that feature.

Thanks again everyone for your suggestions and safe travels to all.

Steve

Thanks Les. We just arrived at the Tulalip Casino Resort in Marysville WA after 7 hours on the road and the sliders didn't creep out. Time will tell when I eventually get the pump changed out if that's what the problem is...don't know what else it could possibly be.

BTW I like your rig.

 

HHHhhhmmmmmm..........and I thought a slider was a new bar drink and we were going to have a party............bummer!!!

Finally...I have a somewhat long update.

On our return I contacted the only Montana dealer in the lower mainland (Vancouver BC area) Fraserway RV in Abbotsford. I asked them to order in the hydraulic pump as I already had a diagnoses from another RV dealer and that we have an extended warranty. I was told that if I didn't let them do their own diagnoses that I would be responsible for all costs if the problem turned out to be something other than the pump. Fair enough...so they also diagnosed a faulty pump. Of course it seems nobody stocks anything these days...we were given a delivery of 4-6 weeks. This would of meant that we would of had to cancel our trip to Alaska so at our cost $453.00 we had them ship it Air X.

When we returned on June 10th to pick up our repaired rig we saw that the bedroom slide was out about an inch. I was livid! They apologized and told us that at this point because we wanted to get on with our trip that there was nothing that they could do for us right away...go ahead with your trip and we will deal with it on your return. We were now having to stop every hour to put the slide back in. At least we were getting some exercise!

I decided to email Lippert the manufacturer of our system for their input. I also enquired as to whether it was possible that the new pump could of been defective and was told that that was unlikely. If you're mechanically inclined and have high pressure gauges they sent me the following info: Hydraulic Test

We dropped off our rig on September 19th after completing our Alaska trip and returned to our son's place in North Saanich. I got a call the next week that after spending many more hours and 18 pressure tests they determined that the hydraulic ram in the large slide was leaking. Apparently the leaks are normally internal. Again delivery is 4-6 weeks. I suggested that in all fairness to us that they should Air X this part as their first diagnoses was incorrect and we had already paid $453.00 for that. If we waited 4-6 weeks we could end up in dangerous snowy driving conditions crossing the two mountain passes heading south. The lady we were dealing with called back after checking with the service manager. He said no way...we already have too many unpaid hours into this. Okay then...No More Mr. Nice Guy...I'm going to the top.

I phoned for the general manager, however he was at an RV Show so I explained our situation to his assistant. She said that she would have the service manager call me. The squeaky wheel got the grease! The part was expedited by ground and arrived at the end of the following week. We then had a 3 day delay because of our Thanksgiving weekend. We picked our rig up earlier this week and so far so good...time will tell. Our bill was $0.00

-- Edited by dianneandsteve on Saturday 19th of October 2013 11:24:27 AM