trolley jack maintenance
Posted 13 January 2010 - 04:59 PM
Is it a matter of replacing an O ring??
or putting more fluid in???
Or is it just shot? I hope not, it is only a couple of years old.
Posted 13 January 2010 - 05:45 PM
If that doesn't work, pull it apart & replace the O-ring(s).
Is it a cheap Chinese one?
Posted 13 January 2010 - 05:48 PM
so got on ebay and found a 2.5 ton jack and now i have peace of mind
Posted 13 January 2010 - 07:11 PM
They can usually get reco kits for them.
If its a cheapie, then good luck getting a kit. Better off to either replace it, or pull it apart and try size up seals in a specialist store.
Autobarn often has cheap jacks in thier sales, next sale is due in march.
Posted 13 January 2010 - 07:55 PM
Posted 13 January 2010 - 08:31 PM
When I stop jacking it up, it drops approx 1/2 inch then seems to hold ok.
I would never get under a car without stands of course, my question is, are these old jacks dangerous? Is it possible for the hydraulics to just let go and the car come crashing down on the discs?
Posted 12 January 2011 - 03:43 PM
Try refilling & bleeding with Jack Oil.
Lurch, do you know the procedure for bleeding a trolley jack?
Mine is a few years old and developed a leak from the piston/seal where you pump it up. Eventually it leaked enough oil out to limit its jacking height. I decided to top the oil up but because I removed the screw in plug (that the piston slides up and down) in, to replace the oil ring, I've let air into the system and now it won't pump at all. The sticker that tells you how to bleed it has faded. I have the little knob which you undo to let the pressure out to lower it, and a little flat bladed screw with what looks like a spring underneath it. I tried a few ways to bleed it but all were unsuccessful.
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