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Discussion Starter · #1 ·
Hi folks, here for your wisdom again.

I'll be doing a change of brake pads all round over the next few days. I noticed when checking them that the rear discs are a bit worse for wear and could do with a refresh.

I'm probably going to do rear discs same time as the pads, but am not totally sure on removal of them. I've seen a couple of videos which used a sort of spider looking metal tool, which grasped 4 areas behind the disc and you wound the centre put which pulled the disc off. Is this neccessary or can it be done without a specialised tool?

I've got everything needed for the pads themselves, it's just the discs which look like they could potentially ruin my good days plan.

As always, thanks for the help & guidance you give.
 

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Unless the J's are completely different to any other car I've worked on. Then there will be the following:

1 or 2 screws holding the disc on. Vauxhalls tend to use Torx screws.
Once these are off, 1 of 2 things will happen... The disc will fall off, or it will remain. If it's the later then hit it with a hammer. Not from behind, but at it if that makes sense. So hammer it on so to speak, but only hammer on the hub part, not the braking part. This will loosen off any rust and allow the disc to be removed.

Simples.

Then, as I'm sure you're aware, clean up the surface. Doesn't need to be a mirror finish, just clean and even. Then get some copper grease, in aerosol form if you can and give it a light spray before installing the new disc. That just helps it come off again next time. (Y)

http://www.halfords.com/motoring/en.../3-in-1-professional-anti-seize-copper-grease This is what I use and it's great stuff. Perfect for installing new discs.
 

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Discussion Starter · #4 ·
Brilliant thanks guys.

Hammer, I have!

I have copper grease but it's in a tube, I'll probably just smear with a glove or something.

I was surprised at how scored one of the discs were - it wasn't picked up at last service (3rd year service, Nov 2016) and looks like it must have been going that way for a while.

Again cheers for the pointers.
 

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Brilliant thanks guys.

Hammer, I have!

I have copper grease but it's in a tube, I'll probably just smear with a glove or something.




I was surprised at how scored one of the discs were - it wasn't picked up at last service (3rd year service, Nov 2016) and looks like it must have been going that way for a while.

Again cheers for the pointers.

Make sure your spanners and torx drives are a good fit as Vauxhall seem to use swiss cheese instead of metal on some of the fittings nowadays
 

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Presumably you're also changing the pads? You'll need a brake rewind tool to wind the pistons back into the brake callipers as they need turning as well as pushing back in. Or at the very least long nose pliers, but it's easier with the proper rewind tool.
 

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If your changing the disc anyway, just hit the rear face, keep turning it as u go, just don't go mental hitting it, should see it easing out as you hit and turn it


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Heat gun also comes in handle for really stubborn discs that won't come off... but only do this if you're replacing the disc. There is a chance of warping the disc, so it might not be usable once its off.

I had a very stubborn rear disc on the BMW which wouldn't come off no matter how much I hit it with a hammer. Applied a heat gun to it for a minute and it came off with one swift tap... then rolled off down the driveway :lol:
 

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When I did the vxr rears a few weeks ago, I took everything off from the axle, reckon it save a lot of time and swearing, tho I was replacing the rear bearings as well anyway


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When purchasing discs check to see what is included. I've just had Brembo discs front and back on my Audi and they came with new retaining bolts included. This wasn't advertised by Brembo so worth checking with who you buy them off
 

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It's an easy job on my j. Just one torx screw to remove and give it a bash with a hammer as you spin it round slowly. Remember to clean and regrease your caliper slide pins. Don't use copper grease to do this but silicone grease or red rubber grease. Copper grease will perish anything rubber.


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Just read this thread and it's worrying that someone has come on here asking for advise on changing brakes. If your not sure bloody leave it to someone who does!


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No one is born knowing everything. People learn by doing and by being told how to do it. If everyone had your attitude there would be no point in having forums at all
 

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With some of the things I've seen on cars I wouldn't trust a do called trained expert to do the brakes, as Tony says you start by learning and let's face it the brakes are one of the easiest DIY jobs to do on the Drive, so long as all bolts go back in there's very little to go wrong.

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