Forum Discussion

cgaskins's avatar
cgaskins
Explorer
Jul 11, 2023

Hydraulic Jack Issues

Hello fellow RVers!

So I have a 2015 Heartland Big Country 3450RL. So my issue where I need a little advice is that two of my 6 hydraulic leveling jacks leak down while in storage. So I parked my RV from my last trip in early May with the back four jack retraced and only the front landing gear extended. I went over to my storage facility yesterday to check on it and the two middle leveling jacks (just forward of the axles) had leaked down. One side had extended about 5 inches and the other side about 2 inches. The jacks in the rear (behind the axles) had not extended. I did a quick inspection (not a detailed on just a quick glance as it was getting dark) and I didn't see any hydraulic fluid leaks.

So over the past 7.5 years, that we have had this trailer, I have had to replace every single jack due to fluid leaks and failures. Last January (2022), I had all of the hydraulic lines replaced as they were leaking around the couplers.

So with that said, I don't know why this leaking down. Any ideas on how to try to trouble shoot this issue?
  • enblethen's avatar
    enblethen
    Nomad
    Jul 11, 2023
    Leaking seals, possible wrong fluid.
    Leaking bypass valve. Need to determine make and model of system.
  • laknox's avatar
    laknox
    Nomad
    Jul 12, 2023
    enblethen wrote:
    Leaking seals, possible wrong fluid.
    Leaking bypass valve. Need to determine make and model of system.


    Yep. Only 2 places to leak, both internal, if no oil is seen externally. Jack seals or valve seals.

    Lyle
  • cummins2014's avatar
    cummins2014
    Explorer
    Jul 14, 2023
    My 2015 Big Country has a slight hydraulic leak on two of the jacks when stored during the winter , I leave them down when stored , one is the left front, and the other is the left rear ,the middle one on the left does not leak , nor the three on the right side . What's crazy is when I bring them up , and travel everything is okay ,and no more leaks during our travel . Been in Montana for the past month with no leaks when leveled up .They have leaked fluid the past two winters sitting leveled up . I may leave them up this next winter ,and see if the one on the left rear will leak down or leak .

    Neither leak enough fluid to worry about ,and so far just have cleaned them up a bit ,and yet to add any hydraulic fluid .

    To the OP, how long did your trailer sit for them to leak down ? Is it a big concern say when traveling ? So far what I have going on is of no concern . I have had to recalibrate the level up a couple times to get it to work .

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