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Thread: Base valves stuck

  1. #11
    KTMTalk Member miloaksrider's Avatar
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    Default Re: Base valves stuck

    A t-handle with a nice flat ground down six point socket as the others mentioned work well as it distributes the load more evenly than just hitting the handle of a wrench or ratchet. An impact with said socket is best if t-handle doesn't work. Don't forget to generous with penetrating oil.
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  3. #12
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    Default Re: Base valves stuck

    Clamp the axle lug in a vice bottom up, take your prepared socket Set it on the base bolt and hit it with a hammer a few Times not real hard you just want to shock the bolt. Shocking the bade bolt we’ll help loosen any corrosion. Then heat it and try your impact on it, there is a copper compression ring so it shouldn’t lock up unless someone did something stupid like red thread lock or cross threaded. Heating well help with thread lock and the expansion we’ll help loosen things. Just be careful.

  4. #13

    Default Re: Base valves stuck

    Quote Originally Posted by wfopete View Post
    Well there is. A tie down to compress the forks a few inches will secure the cartridge in place and allow you to torque to spec.
    It thought on the 4CS the base valve threads into the bottom of the insert that holds the midvalve cartridge, not the fork leg. Which just spins freely when you try to loosen the dang thing. I may be thinking of another model, but I know the 02-03 era is like this, I just did one last week.
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  5. #14
    KTMTalk Member wfopete's Avatar
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    Default Re: Base valves stuck

    Quote Originally Posted by RodC View Post
    It thought on the 4CS the base valve threads into the bottom of the insert that holds the midvalve cartridge, not the fork leg. Which just spins freely when you try to loosen the dang thing. I may be thinking of another model, but I know the 02-03 era is like this, I just did one last week.
    You very well may be right. If so, I apologize as I am thinking OC and I am not schooled in 4CS.
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    Default Re: Base valves stuck

    Quote Originally Posted by Betschet View Post
    Clamp the axle lug in a vice bottom up, take your prepared socket Set it on the base bolt and hit it with a hammer a few Times not real hard you just want to shock the bolt. Shocking the bade bolt we’ll help loosen any corrosion. Then heat it and try your impact on it, there is a copper compression ring so it shouldn’t lock up unless someone did something stupid like red thread lock or cross threaded. Heating well help with thread lock and the expansion we’ll help loosen things. Just be careful.
    ^^^This^^^

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    Default Re: Base valves stuck

    Tried everything suggested here. Penetrating oil, ground flat socket, smacked it with hammer,electric impact,air impact,heat. Will not budge. Neither fork. Pisses me off. PR2 needs to make this right.

  8. #17
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    Default Re: Base valves stuck

    Yes your right about that you shouldn’t have any problem with a impact the last set I did I used my little Makita 12v impact driver maybe 80 ft lb max no problem and those hadn’t been serviced in years. Take them back to the shop and explain the issue and see what they do to resolve it. Sorry your having so much trouble with it and hope it all works out.

  9. #18
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    Default Re: Base valves stuck

    Quote Originally Posted by ridenazi View Post
    Tried everything suggested here. Penetrating oil, ground flat socket, smacked it with hammer,electric impact,air impact,heat. Will not budge. Neither fork. Pisses me off. PR2 needs to make this right.
    Get a propane torch set up from home depot, They must have loctited the crap out of it and over tightened. Heat the foot, not the chrome.

  10. #19
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    Default Re: Base valves stuck

    Already tried heat on fork lugs.

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