Hollow tech fixing bolt stripping out
06-26-11, 07:57 PM
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Hollow tech fixing bolt stripping out
The fixing bolt on my shimano hollowtech has stripped out twice in the last two months. Am I over tightening, under tightening? Are the plastic fixing bolts just cheap? I have seen titanium fixing bolts on eBay, would this be my best bet?
I have hollow tech on another bike and have never had this problem. Could it be the threading on the crank? Appreciate any help on this one. Thanks.
I have hollow tech on another bike and have never had this problem. Could it be the threading on the crank? Appreciate any help on this one. Thanks.
06-27-11, 01:04 AM
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1. Loosen the pinch bolts using a 5mm allen wrench so you can remove the crank bolt using hand strength.
2. Tighten the crank bolt using the hand-operated plastic tool using just hand strength. Your bearings need just enough side load to prevent sideways movement. If you use a tool for leverage on this bolt you will either strip the bolt or damage your bearings!
3. Tighten the pinch bolts.
That's it.
We have a customer who's ruined two outboard bottom brackets by over-tightening the crank bolt. Don't be that guy.
2. Tighten the crank bolt using the hand-operated plastic tool using just hand strength. Your bearings need just enough side load to prevent sideways movement. If you use a tool for leverage on this bolt you will either strip the bolt or damage your bearings!
3. Tighten the pinch bolts.
That's it.
We have a customer who's ruined two outboard bottom brackets by over-tightening the crank bolt. Don't be that guy.
