Stripped allen-key screw

[jrussell]

Hey everyone,

 

My allen-key screw on my disc brake lever was smashed in when i bought the bike, ive managed to open it up a little so i can now fit the allen-key in the screw but its stripped.

 

does anyone have any tips for getting it loose? i need it undone so that i can move my brake lever furhter up my bars.

 

 

 

Its a Hayes 9 lever

 

any help would be appreciated

[jrussell]

bump

[INDABUSCHE]

Try taking a flat bladed screw driver that fits the head of the screw ie corner to corner and tap it in with a hammer all the while putting pressure in turning the s/driver. It should come lose and then replace The idea is that the s/driver blade is wedged and should make for a tight fit. Good luck..

[jrussell]

Ok thanks, ill give that a try now

[Reghard111]

Use a torx bit, similar to allen key but with splines. Tap the op of the bolt to shock it then Tap the torx bit into the bolt and undo.

[greatwhite]

Use a torx bit' date=' similar to allen key but with splines. Tap the op of the bolt to shock it then Tap the torx bit into the bolt and undo. [/quote']

 

Exactly what I was going to say - just make sure it is a tight fit

[jugheaddave]

failing that you could drill the head of (but be very careful not to damage anything else)

[Dirtbreath]

If you can get to it you can hacksaw a flat groove across the head and loosen with a screwdriver.

[kosmonooit]

Many ways to maak n plan but the 'proper' way is to use a screw extractor, which involves some drilling as well. Its like a reverse thread spiral tap.

kosmonooit2009-11-02 06:22:56

[Redbaobab]

Damn didn't type quick enough 

Anyway, explanation follows in case...

 

If all else fails and you feel confident of your drilling skills (basically just a strong steady hand) pickup a set of screw extractors from your hardware store.

Basically it is a reverse threaded shaft and all you do is drill a hole about 5mm into the stripped bolt and then turn the extractor into that hole like you would a self taping screw, as you turn the extractor (with a spanner by the way) the thread will lock up and start turning the bolt out with it - Simple as that.

 

I generally buy them on demand because once you've used it to twist the hell out of a well set bolt then getting the bolt off the end of these things is more trouble than its worth but they do work wonders. I've used them to pull tons of stripped bolts out of my 1965 Jeep from a size 16 engine bolt to self taping screws with 100% success every time.

 

Good Luck

 

 

p0w3rw0lf2009-11-02 06:41:47

[kosmonooit]

To add to that: the screw extracters generally come in a set of different sizes: and you will select one and drill according to the bolt size. There must still be a bit of the wall of the bolt ?for the extractor to grip on without pushing the wall out, at least a few mm but try use the biggest one from the set you can. ?The drill bit must be sharp to drill in steel, and use a small one to pilot, then a larger or series of larger to size.

Its a bit of a delicate operation: and they can break so take it easy with the torque. You will actually feel it twisting before it breaks. The head is made for a tap wrench, but you can use a shifter or set spanner, just make sure twisting forces from just one side do not pushing it sideways, steady and guide the shank with your fingers.? If the bolt is vas with rust, use some Q20 to loosen it up.