Harbor Freight Jack Seal Leak, Stop Leak?

Discussion in 'Workshop and Home Improvement' started by landtoy80, Apr 20, 2010.

  1. landtoy80

    landtoy80

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    I need an O-ring for my Central Hydraulics Harbor Freight Jack Model 42820 2.5 ton Lone Frame Floor Jack. Its the Release Valve Seal. Harbor Freight says its discontinued.
    The O-ring is not an O-ring but more like a short piece of fuel line cut about 1/4" long.

    Tried Napa, Carquest, Harbor Freight Parts and compressor repair shop with no luck.

    My next step is a stop leak. Is there a stop leak for hydraulic oil?
  2. Joe_E

    Joe_E

    Messages:
    3,342
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    the NJ word..
    Maybe try that real good power steering stop leak.
    I forget the brand name but it was like $11 for a little bottle. I dumped some in my chevy pickup last year when the front seal started to leak. It stopped it dead for a year until I recently changed the pump.
  3. landtoy80

    landtoy80

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    I see there are several stop leak products for hydraulics.
  4. D'Animal

    D'Animal Rescuer of Beagle and Landcruisers Moderator

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  5. Blue77FJ40

    Blue77FJ40 SILVER Star

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    Chances are high that you're dealing with a chinese made bottle jack. This site I'm providing *used* to sell repair parts for US and some chinese norco jacks. It may be worth a call to them. Worst case scenario, you'll have to buy a new bottle jack to fit into the floor jack, although the Blackhawk site looks very promising. Good luck.

    Hydraulic Jacks Home Page

    Thanks for the new to me site, D'Animal
    Last edited: Apr 23, 2010
  6. cruiser88

    cruiser88

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    have you tried tractor farm supply?
  7. landtoy80

    landtoy80

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    Location:
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    After much driving around and online searching and countless auto parts stores, Auto Zone had a vacuum hose about the same size as the hose looking o-ring. It fit and so far (knock on fake wood dash) its not bubbling out.

    Every where I went or called laughed at me when I said it was a Harbor Freight jack.:hillbilly:
  8. Joe_E

    Joe_E

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    3,342
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    That's the downside to the super cheap chinese world of harbor freight.
  9. landtoy80

    landtoy80

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    I try to avoid China crap buy this was the tallest floor jack I could find.
  10. D'Animal

    D'Animal Rescuer of Beagle and Landcruisers Moderator

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    For 90% of the DIY at home maintence type people the HF stuff does fine for the 2 or 3 time a year you will use it.
  11. landtoy80

    landtoy80

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    Dammit, I use mine 4 times a year, no wonder if failed on me:eek:

  12. tltaylor22

    tltaylor22

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    487
    I probably wouldn't mess with cut hose for a seal on a jack. There should be a commercial oring and gasket place somewhere near you that can custom cut you a proper seal. Just take the old one in with you. I've done that with several machines here at work without issue.
  13. landtoy80

    landtoy80

    Messages:
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    Location:
    West Slope Colorado
    The o-ring looks just like a piece of vacuum hose cut down. All it does is seal the jacks release screw. The part that lowers the jack that goes into the pump is a long narrow smooth bolt. The o-ring sits in a pocket and the bolt slides o-ring. There is nothing fancy about the o-ring/hose and its holding up fine.
    I did run around town and every place said they don't have a part like it.

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