Quick help needed - front disc change

[Sib]

A is it a T30 or T40 holding the disc on? Mine seem stuck, is there a good way to free them up.

Do I need to take the 28mm(?) bolt out the centre? or will they just come off with the torque bolts?

 

[Alastair.]

Its a T40 mate, dont touch the hub nut if ur doing the front ones.

if the T40 bolts r stuck u really need an impact hammer which most people havent got, so u would use a hammer and punch/chisel

 

[Sib]

i have an impact driver but dont have the right fitting, will see if I can buy one

 

[john.med]

They are the most annoying bolts in the world. I gave up and went to a local garage, eastern european determination saved the day. I'd broken my torx bits, so he broke his own before using a hammer and small screwdriver to chisel them round. Best £30 I've spent in a long time. Do you have a G clamp to compress pistons? If not use a big bar/screwdriver to lever them away from the disc before you remove the caliper. The guy who did mine was my new best friend.

Hope you manage.

 

[Sib]

nope stripped the bolt completely now, will most likely need drilled out.

Gutted, might have to try the chissle method.

 

[bing_17]

Countersunk bolts grip in very well, due to the big surface area of the countersink.... Before you attempt to undo them you should always give them a good smack with a brass/ali drift and a hammer, it just helps to break the hold.

And with torx bits, you shouldnt really use a impact gun tbh, rounds them really easy, after a good tap like mentioned above they souldnt be to tight, just get on them with a 1/2" bar keeping the bit pressed in tight with one hand so it doesnt slip out and round.

Now, uve already rounded it totally.... so get a center punch, make sure its got a good point on it (dont use a screw driver please!) Knock the punch into the bolt and just try and tap it around, U wont have any easy outs and short or drilling it out, thats all you can do really.. good luck!

 

[ditz]

i always round the f*****s especially if someones had a go at them before. its dead easy to chisel them off though nice sharp chisel and a hammer one whack

 

[Sib]

from which direction and what type of chissle?

Will do this tuesday.

 

[Alastair.]

i dont understand how people round them off, all u need is a 3/4" imapct hammer and 3/4" t40 bit. no matter how tight they r they will come off with ease