Chainring - fastners
bianchibob
Posts: 306
When giving my roadbike a thorough deep clean I took my Shimano Tiagra crankset apart.
This involved undoing the 5 fastners that hold the two chainrings together. In the past on rebuilding the Torx bolts have 'self - tightened', however on this occasion I cannot get them to tighten.
The Torx bolts tighten into a sort of nut / button that recesses into the inner chain ring, it has two slots on the circumference, which I presume are to accommodate some sort of tool that can be used to hold the inner fitting while tightening the outer Torx bolt.
Has anyone else experienced this problem
Is there such a tool and where can I purchase one ?
This involved undoing the 5 fastners that hold the two chainrings together. In the past on rebuilding the Torx bolts have 'self - tightened', however on this occasion I cannot get them to tighten.
The Torx bolts tighten into a sort of nut / button that recesses into the inner chain ring, it has two slots on the circumference, which I presume are to accommodate some sort of tool that can be used to hold the inner fitting while tightening the outer Torx bolt.
Has anyone else experienced this problem
Is there such a tool and where can I purchase one ?
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Thanks, did a bit more searching and came up with similar. Now ordered.0
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You might get away with cleaning the threads on the nuts and the bolts and then can use something more ordinary like a large thin flat bladed screwdriver to hole them whilst tightening the hex bolt. I've one of the proper tools and even with that sometimes these are a PITA especially to undo if they are tight.0
