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Old 03-03-2021, 05:31 PM   #1
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Multiple Slides Controlled by One Switch

I recently purchased a new Sierra 321RL and am going through the normal learning curve. The RV has 3 slides -- one for the main living room, one for the kitchen, and one for the bedroom. The main living room and kitchen slides are both motor/gear driven. I'm not sure about the bedroom slide but guess its motor and gear driven as well.
My issue is that the main living room and kitchen slide both operate with the same switch on the control panel. When the button is pushed, the kitchen slide goes all the way out first, then the main living room slide. There is no way I can select only the main living room slide to open, or just the kitchen slide. The bedroom slide has its own button and operates independently.
The strange thing is that there are 3 buttons on the control panel available for slides; the third button doesn't do anything.
Is this normal? My previous Rockwood with 3 slides didn't work this way and I don't understand the logic of wiring the slides this way. I really don't want to tear into the control panel....Any ideas?
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Old 03-03-2021, 06:58 PM   #2
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Are you sure they are motor and driven? Do you have a hydraulic pump for the legs are leveling?

When I read about a situation like yours it is typically caused by using he hydraulic pump to extend a hydraulic ram on each slide. The two rams share the same output pressure from the pump. The slide that offers the least resistance moves first and when it is out the pump then moves the other slide out.

Our fifth wheel has three slides that all share the same pump.

If this is the case there is a way to operate only one slide. The output pressure from the pump will go into a manifold and from it there will be hose runs to the individual slides. The manifold has control valves the allow you close off pressure to an individual slide so that it will not move. But to be honest, these valves are for maintenance purposes and not for everyday operation.
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Old 03-04-2021, 06:29 AM   #3
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My Sanibel does the same thing. It’s just set up that way so not much we can do. Personally I think it’s bad design!
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Old 03-04-2021, 10:43 AM   #4
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Thanks for the replies. Chickdoe, what you say makes sense on the hydraulic pump. And I do have the hydraulic leveling legs.
I agree with the bad design, looks like I'll just have to get used to it.
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Old 03-04-2021, 03:02 PM   #5
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Not saying it would be easy, or even cheap, but if you found a semi-convenient, semi-hidden place to locate individual actuators you could have a hydraulics outfit plumb separate spring-loaded actuator levers for each slide. I used to operate bridge repair trucks that had multiple hydraulic features all operating off the same pump...needless to say you don't want the stabilizers backing off at the same time the bucket is coming down. Multiple hydraulic actuators operating off a single pump is totally normal in the construction industry. Wouldn't hurt to find a hydraulics shop and ask.
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Old 03-04-2021, 05:14 PM   #6
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I use he valves all the time...
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Old 03-04-2021, 05:30 PM   #7
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I have 2010 Sierra 355QBQ with 4 slides and they are the same set up. Just have to get used to it


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Old 03-04-2021, 06:01 PM   #8
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Thanks for the replies...I'll look for the hydraulic fluid manifold setup next time I'm over at the storage area. That might be the best solution for the few times when only one slide is needed.
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