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Old 27-09-11, 09:49 PM   #1
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Default How to unscrew torx screw when head is too torn...

Please ignore this if you are one of many who cant stand my very basic questions..

Im trying to replace rear brake discs but the torx screws which attach the disc to the caliper are very shredded and i cant get any grip or movement to undo them...

How else can i get the screws out bearing in mind its a tight spot...drill?

Any advice?
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Old 27-09-11, 10:28 PM   #2
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Maybe cut a channel across it and then use a flat head driver?
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Old 27-09-11, 11:34 PM   #3
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Hey Joey, is it possible that you could use an impact driver ? using a posidrive bit it just might grab when you hit it. Might be worth a go
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Old 28-09-11, 06:27 AM   #4
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why is the disc bolted to the caliper anyway?

Seriously tho... hammer a socket or bolt-out over/onto the head, or a slightly larger torx or allen into the recess. Beyond that, you're into grinders, saws, and drills...
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Old 28-09-11, 03:28 PM   #5
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can you point to which bolt?? might give us more ideas, and apologies as i cant remember which brakes you have



or was it

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Old 28-09-11, 03:54 PM   #6
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Quote:
Originally Posted by dpmiller View Post
why is the disc bolted to the caliper anyway?
Not sure I understand why this would be either
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Old 28-09-11, 04:36 PM   #7
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Pretty sure you mean the hub, not the caliper! No.70 on the picture yes? Just drill it out. It's only a placing screw. The wheel nuts do the actual work. Just makes getting the wheel on a bit trickier.
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Old 28-09-11, 04:40 PM   #8
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A tip I regularly use with 'rounded out' Pozi or Phillips screws is place the end of a flat ended bar (the 'T' bar from a socket set or similar) on the screw head and hit it with a hammer.
This does 2 things; it closes up the 'splaying' of the srew head making the driver a tighter fit and it shocks the whole bolt and threads losening any rust etc.
It's got me out of trouble many times and may work with torx
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Old 28-09-11, 04:46 PM   #9
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Quote:
Originally Posted by stevoxsi View Post
Pretty sure you mean the hub, not the caliper! No.70 on the picture yes? Just drill it out. It's only a placing screw. The wheel nuts do the actual work. Just makes getting the wheel on a bit trickier.
yep no. 70 would be my best guess and as you say drill the head off or if you had a sharp chisel try creating a lip and tap it round, wont take much until its loose then throw it away, or hacksaw a slot in it to use a flat bladed screwdriver next time
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Old 28-09-11, 04:56 PM   #10
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My first thought was 70 but Joey says it it's a tight spot to drill and it's a torx, will have to see what he comes back with.

Last edited by richiepearce; 28-09-11 at 04:58 PM.
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