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Old 11-13-2007, 08:28 AM   #1
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Default Question about thread lock

I have a screw in the drive-train of my truck that works itself out every time I run the truck. When the screw comes out it disables the 4WD.

Is thread lock the only way to get the screw to stay in? If so, is the thread lock permanent? After using thread lock will I be able to get the screw out if I need to perform maintenance on the truck?
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Old 11-13-2007, 08:39 AM   #2
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Use the Blue Loctite. It can be removed. If it's a little tough to remove use some heat from a heat gun or soldering iron.
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Old 11-13-2007, 08:52 AM   #3
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Both the blue and red can be removed though the blue is easier to get off.

The trick in both cases is not to over-apply it. I will generally put a drop on the threads and then run my finger around it so that it gets into the threads but isn't globbed up on the screw.

Put less on to begin with. If it comes out, try again with a little more.
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Old 11-13-2007, 08:55 AM   #4
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You must clean the screw throughly, make sure it's free from oil.
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Old 11-13-2007, 09:01 AM   #5
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You have to give it time to dry also. Don't just put it together with some loctite and go run it. Give it a little time. Is it in a place where you can get some heat shrink around it? That helps keep pins in also.
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Old 11-13-2007, 01:44 PM   #6
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I mostly use the Blue loctite for screws going into non plastic parts, e.g. putting an engine in place, as said the screw should be cleaned of any residue left behind before you put any loctite and attempt to screw it in. There's a good chance it will still come out easily when you need to perform maintenance, and if screwed in just tight enough it shouldn't present on track problems either, it doesn't need to be very tight (by hand) as that's the loctite's job essentially.
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