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  1. #1
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    Both slides pop out.

    I have a technical question. Not sure if this the correct place or not. Yesterday i hooked up to my 351M. I retracted both middle slides, hit the “hitch height” on the leveling controller. Once it went through the process of retracting the jacks, both middle slide popped out about 6”. I went inside and retracted again. Then I hooked up my truck and retracted the front landing gear. The slides popped out a second time. This is the first time this has happened to me. Only owned this for about 2 months. Any ideas what is happening. Seems like it could be a valve that needs adjusting. Thanks.

  2. #2
    Site Team Second Chance's Avatar
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    That is definitely not normal. I would give your dealer, GD Customer Service, or Lippert a call.

    BTW - a belated welcome to the forum. You can create a signature block with your RV and tow vehicle information (see mine below). That way you won't have to repeat that information whenever you post or ask a question - and others won't have to ask. You can create a signature by going to:

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    Rob
    U.S. Army Retired
    2012 F350 DRW CC LB Lariat PS 6.7
    2020 Solitude 310GK-R, MORryde IS, disc brakes,
    Sailun LRG tires, solar, DP windows, W/D
    (Previously in a Reflection 337RLS)
    Full time since 08/2015

  3. #3
    Site Team Ynot4me2's Avatar
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    I agree with Rob, that is not normal.

    Sent from my SM-P610 using Tapatalk
    Steph & Lise
    2019 F150 Lariat 2.7 EB
    2020 Imagine XLS 22MLE

  4. #4
    Seasoned Camper Cannon07's Avatar
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    My 2021 351m does that sometime after I hitch but only about one to one and a half inches. I close them and they stay after that. Does not do that every time.
    2021 351MR
    2017 Jayco 377rlbh (sold)

  5. #5
    Commercial Member huntr70's Avatar
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    There is a leaking check valve somewhere, or, there is air in the lines.
    Steve- Inventory Manager at Tom Schaeffer's RV, Shoemakersville, PA www.tomschaeffers.com
    [email protected]
    2011 RAM 3500 SRW Outdoorsman Edition 4X4, 6.7 Cummins--TWEAKED!
    2021 Reflection 310RLS

  6. #6
    Seasoned Camper
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    The valve that is causing your hydraulic slides to extend a little is called a Hydac valve.. there is only one for all the hydraulic slides .. this is easy to change if it is failing

    It is NC ( normally closed ) via an internal spring on the needle valve and is electrically opened via a solenoid mounted over the Hydac valve..

    Also..Mon the top of the Hydac valve is a manual override screw,,p if this is not closed all the way it will allow some fluid flow this causing the slides to partially extend

  7. #7
    Site Sponsor Scocciante's Avatar
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    2020 Grand Design Solitude 344GK
    B&W Companion 25,000
    Disc Brake conversion
    3 - X-Factor
    MORryde pinbox
    2007 GMC Topkick C5500 Duramax 6.6
    1 Wife 3 Scotties


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