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wheel cylinder was stuck

Discussion in 'XJ Technical Chat' started by Polock, Mar 7, 2009.

  1. Polock

    Polock Well-Known Member

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    wheel cylinder puck was stuck on the 83 seca project bike
    i just couldn't bring myself to pump grease in it, what a mess
    120 psi from the compressor did nothing, needed more pressure
    my son's nitrogen tank for his paintball gun was empty, that would have been about 3000 psi (CO2 is about 800)
    figured i'd try old school steam power, all i had with the right threads to plug the hole was a yamaha mirror stem
    filled the cylinder with water, put some teflon tape on the stem and cranked it down
    tied a rope to the mirror so it didn't go flying(good thing)and set it on top
    the kerosene heater
    10 minutes later got tired of waiting, propane torch for extra heat
    as soon as you detect movement run
    my ceiling
     
    Polock, Mar 7, 2009
    #1
  2. MiCarl

    MiCarl Active Member

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    Problem is as soon as it breaks free a bunch of the water will flash to steam.

    KA-BOOM!
     
    MiCarl, Mar 7, 2009
    #2
  3. bill

    bill Active Member

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    Polock glad you weren't hurt. I don't think I'd recommend that method :eek:
     
    bill, Mar 7, 2009
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  4. mlew

    mlew Well-Known Member

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    Ouch, I'd stick with the grease gun method.
     
    mlew, Mar 7, 2009
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  5. Polock

    Polock Well-Known Member

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    i guess i should have put a piece of wood over the piston to keep it from going into orbit
    as for the steam, i didn't notice any but it was over a heater that probably dissipated it
    i filled the cylinder with water, maybe a shot glass, but if i have to do it again i'll try a teaspoon of water
    you have to admit a good ka-boom is more fun than cleaning grease for a half hour :)
     
    Polock, Mar 7, 2009
    #5
  6. Robert

    Robert Active Member

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    Remember, water to steam expansion rate is 1 to 824. QUITE a bit of pressure, glad you weren't standing over it! I think you are safer using the grease method.
     
    Robert, Mar 8, 2009
    #6

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