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Stripped oil screen bolt

Discussion in 'The Garage' started by buztabuzt, Jul 31, 2022.

  1. Old Yamma twin. Oil and filter change as usual. Had been a few years since I looked at the oil screen thats at the bottom of the oil pan (slightly below drain bolt. Held on by 6 tiny 8mm bolts and a gasket. In past it had some small metal flakes so wanted to give it a look. Looked good

    Went to reattach with torque wrench set to 10 ft-lbs. Torque wrench worked fine for drain bolt and filter bolt. Something went wrong at such a low setting. I kept spinning it and was surprised it hadn't clicked off. I kept spinning (gasp), despite thinking something was off.

    Now I have half a bolt that dropped out, half stuck way in there. Naturally it stripped the threads in that area. So... I assume best practice would be to remove the half a bolt somehow (seems too deep / small for EZ out) and retap it? Would it be terribly ill-advised to leave it and see if it just holds a seal assuming I don't need to check that screen anytime soon and know I need to keep an eye on it/oil level?

    TLDR: Can i leave stripped half bolt in bottom of pan? It's one of 6 bolts holding on a screen housing. I added couple hundred CC of oil last night to see if it drips (not under load).
    IMG_1030.jpg IMG_1024.jpg
  2. CaptChrome

    CaptChrome XS400 Addict

    I wouldn't leave a broken bolt in the case, but that's just me. I have seen others do a lot worse than leave one broken bolt in an engine though.

    It would take some careful drilling and a small EZout to get it out. Not a fun job, especially with the engine still in the frame.
    buztabuzt likes this.
  3. JPaganel

    JPaganel XS400 Addict

    BBS360 and buztabuzt like this.
  4. Yep.... It leaked slowly through what remained of the bolt. No lazy way out of it for me. Thanks!

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