Handy air-lift "losing power".

Discussion in 'The Garage' started by Geek, Mar 22, 2013.

  1. Geek

    Geek oot & aboot

    Joined:
    Jun 8, 2003
    Oddometer:
    32,151
    Location:
    8000ft.
    Confession: I've not even bothered to look underneath the lift yet.. I'm being lazy and asking here first.

    I have a standard pneumatic air lift.
    It used to lift my 950.
    Today it wouldn't go up (even with full PSI coming from the compressor).
    I took the bike off, it went right up.
    I put my lighter 500 on.. it went right up.
    I put my 950 back on- it wouldn't go up.

    Is there and adjustment or seal or something I need to address to get it back up to full strength?

    It used to lift the 950 without hesitation...

    tia!

    Cheers,
    Ed
    :freaky
    #1
  2. Geek

    Geek oot & aboot

    Joined:
    Jun 8, 2003
    Oddometer:
    32,151
    Location:
    8000ft.
    p.s. It is one of these type of lifts (not my photo but one similar)

    [​IMG]
    #2
  3. Droptarotter

    Droptarotter Long timer

    Joined:
    Jul 11, 2007
    Oddometer:
    1,305
    Location:
    Cloverdale
    Can you hear any air leaks??

    Try taking the cylinder apart and cleaning, lubing it...........mine was kind of rusty after quite a few years of use.

    Could any of the bearing be going bad? Maybe just enough drag to stop the big bike from going up??

    Cheers
    #3
  4. gusanito

    gusanito Mindless Wonderer

    Joined:
    Jan 17, 2006
    Oddometer:
    245
    Give Handy a call and get a new piston seal.
    You'll have to pull the cylinder apart, clean it and replace the seal. Make sure the seal is installed in the right direction and oil the cylinder walls before you put it back together.
    #4
  5. vfroger

    vfroger Not lost, just misguided

    Joined:
    Feb 24, 2003
    Oddometer:
    110
    Location:
    Knoxville, TN USA
    Ensure you haven't crimped the hose to the foot control. Don't ask me how I know.
    #5
  6. katbeanz

    katbeanz earthbound misfit, I

    Joined:
    Feb 12, 2005
    Oddometer:
    7,912
    Location:
    Kansas City
    :nod I just looked at mine, looks like the (weak) rod end of the cyl is what's used to lift. If you don't hear a leak around the rod seal, bypass the foot valve to make sure it's not sticky and put some light oil down the hose to lube up the cup seal on the piston.
    The rod is only exposed when it's down, but sometimes you can lube up the rod and let it work back in. Don't forget the safety latch if you go sticking body parts in there. :eek1
    #6
  7. cross-country

    cross-country .

    Joined:
    Aug 2, 2005
    Oddometer:
    1,719
    Location:
    Grand Junction, CO
    I've had the rear leg "sit" on the hose when in the fully collapsed position, causing a similiar problem. I got in the habbit of pushing the hose over with my foot whenever I lowered the table.
    #7