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Thread: Module screws

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  1. #1
    Senior Member Ehunter's Avatar
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    Default Module screws

    Just bought an Onza, and there is one module screw that is either buggered, or in so tight I can't budge it. I've broken 2 allen wrenches so far trying to get it out. Been soaking it in silicone lubricant and WD 40, and still too tight. The allen head is still ok. Anyone have any ideas? Thanks guys!
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    You could back the bow off, remove the strings and then use a small pencil torch to heat it up and try to get it to break loose.

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    I seen that at a local shop when I wanted to test a FC400. Owner said he's had it happen more than he wants to admit. He said it isn't the threads, but the steel countersunk head is galling to the aluminum cam. He has to drill out the head and then the threaded area comes right out.
    Firecat 400

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    Senior Member gravedigger's Avatar
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    i have to say drill out the head,leaving the alllen head still to ware you can get a wrench on it.then take it on out.small hole not big one.then if it dont come out try hot cold and you will have a center hole for even flow.

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    Cycing of heat and cold will help if it isn't galling. If it is galling, and I suspect that since you broke two wrenches, heat cycling isn't going to be much help.

    This reminds me, tonight I am pulling my screws out and applying anti-seize.
    Firecat 400

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    Ehunter,
    What was the outcome if you don't mind me asking?


    chasman
    Chasman, 2010 Martin Bengal 60#,Parker Phoenix 60#, Parker Hornet 70#. Hutch-n-Son strings.'Makes a lot of sense if you don't think about it!

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    Default another option

    If only 1 screw is tight.

    Remove the other screw and you can rotate the module to loosen the screw that will not come loose. This has worked for me everytime.

    If 2 screws will not loosen.

    I had one guy with a good wrench and I used a nail set and a hammer on the head of the screw. I gently tapped the screw as the other guy was putting pressure on it with the wrench.

    Give it a whirl

  8. #8
    SonnyThomas
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    Default Module screws

    Quote Originally Posted by gstudt View Post
    If only 1 screw is tight.
    Remove the other screw and you can rotate the module to loosen the screw that will not come loose. This has worked for me everytime.
    If 2 screws will not loosen.
    I had one guy with a good wrench and I used a nail set and a hammer on the head of the screw. I gently tapped the screw as the other guy was putting pressure on it with the wrench.
    Give it a whirl
    Warning on using the mod to break loose the screw - DON'T FORCE! You could bend the mod....

    Other than "tapping" with a nail set and missing and smashing the cam, try a dremel tool and grind to "slice" a cut across the allen head. Once a good cut or slice you can use a small chisel, screw driver or nail set and gently tap the screw in the direction to loosen.

    And it is true of the allen head corroding to the cam. WD 40 and the likes don't penetrate and will break through corrosion. Use Liquid Wrench the supreme penetrating oil.

    If and when you break the screw loose or on another froze screw, when it breaks loose you will smell a sulfer like smell. That's corrosion.

  9. #9
    Senior Member gravedigger's Avatar
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    i use mouse milk to get into them things that just wont break loose.

  10. #10
    Senior Member Rockyhud's Avatar
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    PB Buster is another good penetrating oil for such occasions. Once the old screw is out and you're ready to install a new one I recommend apply string wax on the screw threads then running it into the hole. This will act like a thread locker but doesn't seize up like your current situation and won't cause damage to the threads in the hole.
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