changing front rotors

**10PEL** · 31st July 2007, 07:45

i have been through the 'how 2's" section and have only come across pad change. i will be changing my rotors this weekend and was wondering if there was a how to on it of i'll go into discovery mode and figure it out? or if any1 can give me a simple run down on it that would be good.

cheers.
matt from downunder

**Big Sig** · 31st July 2007, 07:53

Rotors as in brake disk?

**Gsi3.2** · 31st July 2007, 07:54

it's easy really..just remove the caliper and pads as per the how-2..

then undo the caliper carriers 2 mounting bolts at the rear of the disc ( rotor) and remove the carrier.. then just undo and remove the 1 mounting screw on the face of the disc hub..the disc will now knock off.. either easily or brutally dependant on how long they have been fitted to the car..

Now the IMPORTANT BIT..

..spens at least 5 mins sandpapering the newly exposed hub flange to get rid of all traces of rust.. any rust left will make the disc sit wrongly and will lead to problems later..

.. after sanding, clean off the new discs with solvent cleaner ( carb cleaner etc) and then remount, secure with fixing screw..

Clean out the threads on the carrier mounting bolts and refit with some studlock/threadlock to secure them in place.. reassemble the calpier and new pads as per the how-2.. get in car and gentle press the brake pedal to bring the new pads up to the disc before driving the car off..then just try and brake gently for the first 50 miles to give the pads time to settle in..

..

**Big Sig** · 31st July 2007, 07:54

Ahh there it is! beaten again!

**Gsi3.2** · 31st July 2007, 07:58

Originally Posted by Astrase20

Ahh there it is! beaten again!

oh yes..

.. the fast service dept is online..

**10PEL** · 31st July 2007, 09:15

Originally Posted by Gsi3.2

it's easy really..just remove the caliper and pads as per the how-2..

then undo the caliper carriers 2 mounting bolts at the rear of the disc ( rotor) and remove the carrier.. then just undo and remove the 1 mounting screw on the face of the disc hub..the disc will now knock off.. either easily or brutally dependant on how long they have been fitted to the car..

Now the IMPORTANT BIT..

..spens at least 5 mins sandpapering the newly exposed hub flange to get rid of all traces of rust.. any rust left will make the disc sit wrongly and will lead to problems later..

.. after sanding, clean off the new discs with solvent cleaner ( carb cleaner etc) and then remount, secure with fixing screw..

Clean out the threads on the carrier mounting bolts and refit with some studlock/threadlock to secure them in place.. reassemble the calpier and new pads as per the how-2.. get in car and gentle press the brake pedal to bring the new pads up to the disc before driving the car off..then just try and brake gently for the first 50 miles to give the pads time to settle in..

..

thx for the fast response. muchly appreciated. just 1 question. y is it that you clean of the disc, does it have a coating???

job sounds easier than i though it would be. thx again

**Duncan** · 31st July 2007, 10:56

Originally Posted by 10PEL

just 1 question. y is it that you clean of the disc, does it have a coating???

Yes, they have a thin coating of oil stuff to stop them rusting when they are sat in storage. Very important to clean it all off or your stopping distance will be somewhat increased!!