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Old 04-29-2008, 05:26 AM   #1
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Default My grub screw keeps popping out of my pinion whenever i drive

I've lost all of my grub screws in a single day
How do i stop losing them??? I already tightened as best as i can
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Old 04-29-2008, 05:28 AM   #2
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You can always try locktite.

Make sure you tighten down the pinion on the flat part of the motor shaft and you should be fine.
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Old 04-29-2008, 05:40 AM   #3
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check and make sure the pinion's thread is still good. have you tried other pinions and have only problems with one particular pinion?
i used to have one that loses grub screws after few rounds... threw it away and got a new one... and it solved the problem. just bad threads on the pinion.
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Old 04-29-2008, 05:44 AM   #4
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Default Pinion set screw

What Peded said. Make sure that the tip of the screw is contacting the flat on the motor shaft. Also try using new screws, the tip of the screw should be shaped like a small cup. If the tip is worn, it will back out. Another tip is to use a good quality hex wrench. I'm using an Associated wrench with a hardened tip. It does make a difference.
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Old 04-29-2008, 09:38 PM   #5
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the blue locktight works wonders for this!
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Old 04-29-2008, 11:14 PM   #6
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Quote:
Originally Posted by racing_jason View Post
the blue locktight works wonders for this!
Blue loctite works ill second that, ive never had to use it for the set screw on a pinion myself, but i've used it many times on pretty much everything. Go with a new screw, or even a new pinion, threads get worn and sloppy causing the screw to back out.
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Old 04-30-2008, 07:14 AM   #7
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are you using alan keys? if so buy a good set of scew drivers because i had the same problem till i bought good set of scew drivers and it fixed the problem and i dont lose any grub screws
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Old 05-07-2008, 01:55 AM   #8
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Locktite chap.
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Old 05-10-2008, 01:43 AM   #9
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Yup, blue loctite. Have never lost one yet. SOB to get the dried loctite completely cleaned from the pinion threads after an uninstall, but hey...better than to have nothing to clean at all.
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Old 05-10-2008, 02:31 PM   #10
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uh yes i'd like to be the first to suggest loctite it really works and if you order now u'll get a second one free of charge ... order now!
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