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  1. #1
    Chief Petty Officer ShaneCarroll's Avatar
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    Default Acceptable to Put Lok-Tite on Alternator Bracket Bolt?

    This weekend, the bolt jumped out of my alternator bracket. I was idling and heard the strange noise right away, so I killed the engine. I found the bolt in the bilge, and put it back in. Today, it started to come loose again. The hole is not stripped, but I don't want to put my full body weight into it and break the bolt off. Would I be able to put Lok-Tite or something on that bolt to prevent this? Thank you in advance.
    1992 Sea Ray 180 Bowrider
    1992 MerCruiser 3.0L 115HP

  2. #2
    Moderator Don S's Avatar
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    Default Re: Acceptable to Put Lok-Tite on Alternator Bracket Bolt?

    I suppose you could locktite it, but those things seldom if ever come loose.
    Locktite is a bandaid fix.
    What you need to do is find out why it's vibrating so bad that it shakes the bolts loose.
    Don S.


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  3. #3
    Supreme Mariner
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    Default Re: Acceptable to Put Lok-Tite on Alternator Bracket Bolt?

    In addition to what Don said, replace the bolt with a new one. If it sat there vibrating as it worked loose it wore the threads down even if you can't see it and in all probablity it has also stretched some.

  4. #4

    Default Re: Acceptable to Put Lok-Tite on Alternator Bracket Bolt?

    Be careful when using Loctite. My suggestion would be to use Loctite Threadlocker ( Blue). Also use a Loctite primer. Squirt some primer into the hole as well as the threads on the bolt !! Follow the instructions and you can't go wrong !!

  5. #5
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    Default Re: Acceptable to Put Lok-Tite on Alternator Bracket Bolt?

    Are all the pulleys free of rust and corrosion?

  6. #6
    Commander bifflefan's Avatar
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    Default Re: Acceptable to Put Lok-Tite on Alternator Bracket Bolt?

    Use a lock washer.
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  7. #7
    Admiral
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    Default Re: Acceptable to Put Lok-Tite on Alternator Bracket Bolt?

    And if that fails, use a slightly longer bolt and back-nut it

  8. #8
    Chief Petty Officer ShaneCarroll's Avatar
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    Default Re: Acceptable to Put Lok-Tite on Alternator Bracket Bolt?

    Thank you for the advice, everyone. Yes, the pulleys are rust and corrosion free. I disconnected the power steering pump, as it was only causing me grief, and I don't really need it. I only have the one belt that goes to the alternator. The weird thing about it is, I can get the bolt all the way in, and it feels tight in there, but I don't want to torque it down too much. It has not come loose again since that time, but I noticed today that the ski tow ring has come loose also. That one is stainless, and it looks brand new. I am guessing it just happened from all the waves maybe jarring it loose over time?
    1992 Sea Ray 180 Bowrider
    1992 MerCruiser 3.0L 115HP

  9. #9
    Commander
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    Default Re: Acceptable to Put Lok-Tite on Alternator Bracket Bolt?

    Quote Originally Posted by ShaneCarroll View Post
    Thank you for the advice, everyone. Yes, the pulleys are rust and corrosion free. I disconnected the power steering pump, as it was only causing me grief, and I don't really need it. I only have the one belt that goes to the alternator. The weird thing about it is, I can get the bolt all the way in, and it feels tight in there, but I don't want to torque it down too much. It has not come loose again since that time, but I noticed today that the ski tow ring has come loose also. That one is stainless, and it looks brand new. I am guessing it just happened from all the waves maybe jarring it loose over time?
    Locktite it! It won't hurt anything. Just don't use the Red stuff. You'd have to heat it with a torch to get it to release.
    For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear. They will turn their ears away from the truth and turn aside to myths.-2 Timothy 4:3-4:

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