If your nuts start roundin` off ??

spark erosion? although it'll probably be cheaper to buy a new caliper!

Have you tried an impact wrench? If you dont have a compresor get an electeric one or even a battery opperated one. The good ones are £200 plus but you can hire one for £10 _£15 a day and they will move any bolt or nut they have done for me anyway.

slim jim said:

Have you tried an impact wrench? If you dont have a compresor get an electeric one or even a battery opperated one. The good ones are £200 plus but you can hire one for £10 _£15 a day and they will move any bolt or nut they have done for me anyway.

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Not when the head is rounded off they won't!:doh:

lerk said:

Not when the head is rounded off they won't!:doh:

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They will if you bang on a smaller socket, or file the nut or bolt first so they fit.

use the next spanner size down or 2 , heat ring spanner and using a vice grips to hold the hot spanner tap it onto the rounded nut with a hammer , let it cool and you might get enough hold .

I'll try to post some pics tonight so that you can all see my particular issue.

DanBerry, I feel your pain. Yesterday I set about replacing the rear calipers, as the ones on the 110 have become solid lumps of corrosion. The lower caliper bolt did a couple turns, then rounded off, even using a 12 point socket. The upper bolt is too close to the spring for my 1/2" ratchet, and a spanner wouldn't budge it.

In the end I applied the angle grinder, but not to the bolts, since you can't really access the upper one. I ended up cutting the caliper in half... That allowed me to pull the axle and hub, and take out the bolts that fix the caliper bracket.

With the caliper and bracket off the axle, it revealed that the last @#$&! who installed calipers put red loctite on the bolts! WTF?! I still had to cut off the bolt heads to remove the back of the caliper, then bolt the bracket back to the axle, heat the bolt stubs with a torch and use a pipe wrench to get them out the bracket.

Now I have to get the disc off the hub... and do it all again on t'other side. Argh!

There is a wee lesson in here for everyone. I know we can't allow for other folks neglect, or lack of foresight. But when doing any work, if possible use copper grease or sumthin suitable. When rebuilt, coat the bolt in sumthin suitable ( waxoil, copperslip, grease, anything) to protect it from the elements. I've just finished waxoiling my disco and was sure to coat every fastening i could see. Gave all the caliper bolts a coat of coppaslip. It'll wear off, but I'll just put more on.

Oy, good stuff! I wish I read this 6 months ago