Not saying you did this but some peeps smear copper grease on the face of the brake disks to prevent wheels from jamming but I've always been of the opinion this is a very bad idea. The friction between the wheel and the disk is important as without it only the studs are preventing the wheel from twisting under braking and acceleration. A little copper grease around the centric ring is all that's needed.many years ago I left the screws of the drums as they were a bit worse for wear on the cross screw driver part and meant to replace them asap but did not when I did remember which was about 2 years later I discovered that the holes for the studs to go through had very slightly gone oval only approx. 1 mm, so I will always replace them now , if you find you can not get them off either then get a six mm drill and drill the head off then when you take the drum off you just need a pair of pliers and they come out easy and if you put a tiny bit of copper grease on the thread they will always come out.
Only the center 'hub' bit, not the braking surfaceThey but copaslip on there brake discs wow thats insane you are right it is a very very bad idea to put any thing at all on your brake discs especially grease it sounds like they are trying to kill themselves as this would have a very serious effect on there braking performance.
This is spot on.I was taught by a mechanic never to put any type of copper slip or grease any where near brakes. Build them dry as the grease/slip or what ever will only hold the brake dust and make them seize faster.
Also whe they get hot the grease/copper slip becomes very liquid and runs into places you dont want it.
The amount of brakes I have stripped where the grease/copperslip has contaminated the pads is amazing. Put together correctly and maintained correctly there is no need for the stuff near brakes.
LOL, I don't think that will cause any issues. Some folks slap it everywhere but often times less is better.I did put some copaslip on my new brake disc retaining screw threads so it will be easier to remove next time as they where problematic last time i wanted to remove them.
ok many thanks will remember less is best but hopefully i will not have to drill out disc crews again with the use of copaslip.LOL, I don't think that will cause any issues. Some folks slap it everywhere but often times less is better.