Afternoon all, taken a flyer from work to replace the brake discs and pads on the tin top.
Got it up on axle stands, got the wheels off and the calipers off. Now I'm stuck!
Can't get the little retaining screw to come undone. It is a 6mm socket cap into the hub. Don't want to drill it out. Have tried WD40
already. Am going to let it soak for a bit while I go to the factors for the pads and discs.
Any suggestions greatfully recieved,
Mike
Might have to, the heads break off. I don't think a lot of places bother replacing them as the wheel locates the disk. Smack the disk with a lump hammer and smash it to pieces hopefully it will break across the screw hole.
Normally I get a small ball pien hammer with the ball towards and resting on the cap head. Then I give the flat end a couple of really hard whacks
with a bigger hammer. First this action normally breaks the seal and secondly it tightens up the hex or torx socket hole so the you get better
leaverage to undo it. Soaking normally achieves nothing.
(Yes I know saftey aspect, You should NOT hit two hammers together. But if the bigger one is the Copper end of a LARGE copper/hide hammer then no
problem.)
I used to use an impact driver but it was just a posi screw, that was on my old escort. Real pain in the arse.
D
Impact driver works a treat. Failing that smack around it with a hammer.
If all else fails drill it out or tap it round with a dot punch.
Don't forget the blow torch trick, heat it up good and hot then as it cools use the impact wrench nearly always works.
If an impact driver doesn't shift it use a center punch on the head of the screw near to the edge . Tilt the punch to a slight angle so that the point is pointing anticlockwise then give it a tap or two with a hammer . This nearly always works for me , if the screw shears just make sure that the new disc mounting screw hole aligns with the old screw .
i got one out with an sds drill on chisel mode, concluded that it was easier to drill the rest. The correct tool is an impact driver (not an air
impact one), you whack it with a hammer and it jolts it undone.
like this:
http://cgi.ebay.co.uk/LOOK-Brand-New-13pc-IMPACT-DRIVER-SET_W0QQitemZ130033698212QQihZ003QQcategoryZ30917QQrdZ1QQcmdZViewItem
Cheers lads
All done, ended up getting the angry grinder out!
How come it took three hours to do one side (including a trip to the factors, siezed bolts, lots of swearing, discs that didn't fit, a trip back
to the factors for the right ones, swearing, etc etc) and only half an hour to do the second side?
All done anyway.
Mike
You made the classic mistake of doing the wrong side first 
Had just the same issuse on the missus's MG. Ended up taking a drill to the screws and a hammer to release the discs!! Didn't help that it was raining at the time. Also took 2 hrs one side and 40 mins the other.
I think the extra two hours is usually spent trying to figure out a "gentler" way to do it but once you have resorted to violence for the first side it is easier to just get stuck in second time around...
If your replacing the discs simply hit them with a chisel till they break then it will come with a good pair of grips.
quote:
Originally posted by Peteff
You made the classic mistake of doing the wrong side first
Cast iron, big hammers and impact drivers. Ahh ..... violence is a wonderful thing when done properly
It's not violence, it's percussive maintenance