Forum Discussion

Grey_Mountain's avatar
Oct 08, 2013

Too Much Hydraulic Fluid in the Jacks Reservoir?

One of my jacks is leaking fluid. I have to top off the reservoir quite often, which is no easy job. Is is possible to put too much fluid in the reservoir, or does the excess just leak out?
I'm on the backside of a 5000 mile trip, will have this fixed when we get home in a few more days.

GM
  • Best method I have found is using a small pump that screws onto the top of a oil bottle with a flexible plastic tube for delivery. It is designed for pumping oil into outboard motor legs but works great for a lot of other things. You can pump in or out. You can get them at most hardware & automotive stores.
    Bob
  • Thanks for all the replies. My RV fixer tried a fix before we left - simply lubed the jack. He said at times, that will do the trick. That worked for several extensions and retractions, but finally it started leaking again. I fill the reservoir with a turkey baster - but it's still difficult to get to even to do that. After this stop, jacks will only go down one more time before we get home and get the RV into the shop. They are Power Gear jacks,and I check the level with the jacks fully retracted.

    GM
  • I just had mine fixed I filled mine up for a year or more and it was fine on a 99 Southwind
  • Simple fix, go to the dollar store and buy a turkey baster. Suck out the excess. Keep an eye on the level for the rest of your trip. Fix the leak when you get home.

    Don't over think it, and enjoy the rest of your trip.
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    Is it possible to put in too much: YES
    Does the excess just leak out: Has for me so far. so YES.

    Other than a bit of a mess, depending on where the tank is, Don't worry about it.

    Now more:

    I full time. This means that in the cooler season where temps are down below 40F (IE: Today) I have to add fluid because the fluid "Shrinks" when cold faster than the tank and the idiot alarm dings.

    But come August when it's 101 in the shade. there is now too much in the tank and on the ground it goes. Not a good design.
  • RJsfishin wrote:
    Jacks are one way cylinders, so must be fully retracted. Hydraulic slides are 2 way cylinders, so probably don't matter if they are in or out when filling.


    Jacks should be retracted before filling/topping off reservoir.

    My hydraulic slides are the same.....all slides retracted before checking fluid level and filling/topping off.
    If I topped off reservoir with slides extended I would be cleaning all of the hydraulic fluid I put in to top off out of compartment.

    Don't assume......check manual or with mfg. before topping off.
  • Depends on the brand/model of jacks.

    Tell us what you have, and we can be of more assistance.

    Some have a dipstick, some you fill to a mark on the fill hole, some you extend one jack 6" and fill until the light/buzzer goes out. VERY different.
  • Jacks are one way cylinders, so must be fully retracted. Hydraulic slides are 2 way cylinders, so probably don't matter if they are in or out when filling.
  • check fluid with jacks fully retracted

    if they need fluid, add but do not over fill

    if one jack leaks, it needs new seals
  • Depending on make some will vent excessive fluid out on the ground or inside a compartment under the reservoir. Manufactures recommend to service the reservoir with jacks up and not to overfill.

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