Hydraulic Jacks on RVs

Discussion in 'Tech/Mech General' started by verity23, Nov 23, 2008.

  1. verity23

    verity23 Read Only Funster

    Joined:
    Sep 20, 2008
    Messages:
    42
    Likes Received:
    0
    Location:
    Wiltshire
    Hi All. First posting since joining.
    Could anyone tell me if I should lower the Hydraulic jacks when my rv is not in use? This question may seem strange, when you are on site you always lower jacks but if they left down would I need to spray some lubricant every now and then?
     
  2. scotjimland

    scotjimland Funster Life Member

    Joined:
    Jul 25, 2007
    Messages:
    28,934
    Likes Received:
    25,574
    Location:
    .
    Hi

    The jacks shouldn't be left down when storing, there is a good chance of them seizing, nor will it do the seals any good..
     
  3. Jim

    Jim Ringleader

    Joined:
    Jul 19, 2007
    Messages:
    25,827
    Likes Received:
    76,097
    Location:
    Sutton on Sea
    My jacks manual says that the jacks should be regularly lubricated with silicone spray, specifically mentioning not to use oil like WD40.

    For storage I would not lower the jacks:Smile:
     
  4. scotjimland

    scotjimland Funster Life Member

    Joined:
    Jul 25, 2007
    Messages:
    28,934
    Likes Received:
    25,574
    Location:
    .

    Good point Jim,


    WD40 is in fact a very poor lubricant being mostly made up of solvent, great for loosening things up, but it often does more harm than good by washing out the existing lubricant.
    After use you need to apply proper mineral oil.

    It's also great for cleaning tar off your bare feet... :thumb:
     
  5. damondunc

    damondunc Funster

    Joined:
    Aug 2, 2007
    Messages:
    101
    Likes Received:
    15
    Location:
    near Lincoln
    Rv levellers

    If you have a hydraulic levelling system, Jim is quite correct, you should not use any oil based lubricant on the exposed rod use only silicon spray anything else will cause the seals to swell and eventually the jack will seize! electric levellers it is ok to use oil. As Scotjimland says WD40 is not a good lubricant.
    Dunc.
     
  6. Shore-is-Good

    Shore-is-Good Read Only Funster

    Joined:
    Aug 26, 2008
    Messages:
    46
    Likes Received:
    1
    Location:
    Somewhere warm
    First of all - Hello - as this is my first posting on this forum.

    I received the opposite advice.

    I asked E&P Hydraulics (the makers of the hydraulic jacks fitted to my Concorde Charisma) and they advised me that it is absolutely acceptable to store my 'van with the jacks lowered. Their advice was to NOT lift the wheels completely off the ground (which I wouldn't anyway, as per the owner's instructions) but to just let each corner take some weight off of each wheel. (I wanted to avoid 'flat-spots' on my tyres while the 'van is in 6 months storage).

    Furthermore, I Googled some US RV forums (since most US RVs have hydraulic jacks fitted!) and the advice was the same; "it's okay" and some said it was 'essential' for long term storage.

    Concerned about surface rust on the exposed rams, I have coated them in a thin layer of waterproof grease, ensuring it didn't touch the seals and have left a note on my steering wheel to 'wipe the grease off' before retracting the legs.

    So... if the manufacturer says it's okay and they do it on their RVs in the states, I'm happy.
     
    Last edited: Nov 23, 2008
  7. Jim

    Jim Ringleader

    Joined:
    Jul 19, 2007
    Messages:
    25,827
    Likes Received:
    76,097
    Location:
    Sutton on Sea
    Hello and welcome to the forum, thanks for making a contribution:thumb:

    You will find lots of contrasting views about RV's in the States. Do a search for jacks down then slides out, or vice versa and you will see:Smile: I am totally mechanically challenged, but if I had the jacks system (like most people) that incorporates a spring return, I wouldnot leave them down. It must take some of the spring from the spring if they are stretched in the down position for months on end. Mine are hydraullic down and up, so maybe it would do no harm, or would it, I have no idea:Smile:

    I am not worried about flat spots on tyres because they are never in the same place for too long.
     
  8. dazzer

    dazzer Read Only Funster

    Joined:
    Jul 30, 2007
    Messages:
    1,698
    Likes Received:
    99
    Location:
    In my house
    Surely the answer should be not abandon your pride and joy for 6 months!!

    Just go once a month and run the engine, take it for a spin, run the slides in and out, extend the jacks up and down a couple of times run the a/c switch on the heating..
    its common sense.......use it or loose it :Doh:

    I get it all the time at work with roller shutters locked up on Blackpool promenade 20 feet from the sea....................."I locked them up in November and now its May and they wont open, i think they may be seized up" :Doh:......no shit Sherlock!!!!!!!:Eeek::Rofl1:

    Just spend 1 hour of your time playing with your pride and joy over the winter....it will save you a fortune:thumb:

    Oh yes and DONT leave your handbrake on..it will seize up pretty quickly
     
    Last edited: Nov 24, 2008
  9. verity23

    verity23 Read Only Funster

    Joined:
    Sep 20, 2008
    Messages:
    42
    Likes Received:
    0
    Location:
    Wiltshire
    Thanks guy's for all your advice. I agreed use it or lose it
    Pete
     
  10. Shore-is-Good

    Shore-is-Good Read Only Funster

    Joined:
    Aug 26, 2008
    Messages:
    46
    Likes Received:
    1
    Location:
    Somewhere warm
    Use it or lose it is right, Dazzer and Verity23.

    Unfortunately, I have no choice but to leave my P&J laid up for six months. You see, I spend that six months at my beach house in the Bahamas. It's a bummer, I know. :Cool:

    The only consolation is that I really do use it (an awful lot) when I'm in the UK, with extended trips all over our beautiful island and the continent. :thumb:
     
Loading...

Share This Page