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Thread: How to remove stubborn screws

  1. #1

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    How to remove stubborn screws

    I am trying to remove the flipper to replace it but I can't undo the screw that hold the shaft, as seen in the pic.

    2019-06-01 18.59.29 - Copy.jpg

    I have sprayed WD40 on it during the day but it still won't budge.
    I have also used a nail punch and hit it with a hammer, shock attack, no good.

    I have heard of the left hand drill extractor bit, do they work ?
    Any advice on how to remove them would be great.

    btw, this is on a Gottlieb System 1 playfield.

  2. #2

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    Try heating them up. If you have a jet lighter try that


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    How to remove stubborn screws

    When you get it out, put Allen bolts back in, there easier to remove later, a bigger Allen key size. You can grab the top to, if needed. I had the same problem on my Charlie’s. Now to remove the grub screw, just sell the machine to me and then it’s removed. Ha. Good luck Trev.


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    Tap in a torque bit...like T20 etc and then mini socket with your 1/4 drive

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    heat the surrounds and freeze spray the grub screw

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    Thanks guys, I'll try out a few of those ideas tomorrow.

    And, yes Wazza, I will be going to the Allen bolt as I have them on my JP & PP and they are easier to use. Not sure where to get them at the moment, will have to look them up.

    Also, not sure where to get freeze spray?

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    Quote Originally Posted by thejudge View Post
    Thanks guys, I'll try out a few of those ideas tomorrow.

    And, yes Wazza, I will be going to the Allen bolt as I have them on my JP & PP and they are easier to use. Not sure where to get them at the moment, will have to look them up.
    Edy knows, he has them.


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  8. #8

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    If you don't want to use a jet lighter flame you can try using a soldering iron on the grub screw, place it on the screw for 2 minutes per screw.

    I have used this method many times with good results.

  9. #9

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    I have an impact driver you can use. You will need a tip to suit, I can't guarantee I will have one, and one hit, she should be free.
    Let me know if you want to try and I'll bring it over.

  10. #10

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