Allen bolt size for...
 

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[Closed] Allen bolt size for Shimano rear mech clutch cover

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Any one know what size (thread and length) the 3 allen key bolts/capheads are that are used to fit the clutch cover on a Shimano shadow plus rear mech?

Mine are seized in and I need to drill them out.

cheers


 
Posted : 02/03/2015 12:43 pm
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think they tell you in here


 
Posted : 02/03/2015 12:46 pm
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thanks for the reply but unfortunately they don't.It does say I need a 2mm allen key though


 
Posted : 02/03/2015 4:53 pm
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I can't find the size listed anywhere but there's a p-cover bolt set available from Madison...

http://www.madison.co.uk/products/cycling/transmission-braking-components/rear-derailleurs/rd-m786-p-cover-bolt-set-3-piece/


 
Posted : 02/03/2015 6:00 pm
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My apologies, I now get why you want the size and length (I know, dim shit). I'll whip one out tomorrow morning, take the measurements and let you know.

Edit : From memory they're about 12mm x 3mm but better to be safe n all that...


 
Posted : 03/03/2015 12:23 am
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Rather than drill them out (which will fail) try and tap a small torx or spline bit into the hex head and use that to remove them.


 
Posted : 03/03/2015 12:55 am
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2mm hex key would normally suggest an M2.5 cap head screw. M3 is normally 2.5mm allen key. But then shimano do have a habit of getting unusual bolts produced like the small head ones used on HTII crank arms.


 
Posted : 03/03/2015 1:16 am
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Okay, just had the verniers on one I just removed - 2.88mm x 10.34mm

A weird shaped thing, though, not just a standard bolt.


 
Posted : 03/03/2015 11:10 am

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