How to Repair Your Audi Brakes with a Brake Disc and Pad Kit
Don't feel intimidated when it comes to the prospect of repairing and replacing your brake rotors. With the proper tools and the right amount of time, you should be able to replace your brake disc and pad. That's why you should definitely purchase the right brake disc and pad kit for the job (the most complete ones you could get your hands on). The better your disc and pad kit package, the easier the job will be.
What You'll Need
- Brake spray
- Large C-clamp to depress the caliper
- Wheel removal tools such as jack and lug wrench
- Various wrenches to remove the brake caliper bolts
- Rust buster spray if rotor is rusted to wheel axle plate
- Turkey baster or siphon to remove fluid from master cylinder
- Vehicle support while working such as jack stands and tire chocks
- Heavy rubber mallet (optional if rotor does not come off smoothly)
Step 1:Lift your Audi with a jack and jack stands or wheel chocks then take off the wheel. The chocks will keep your vehicle from rolling; don't completely rely on your standard jack when working. Make sure to use the proper jack stands.
Step 2:Inspect the brake disc for wear and tear. You'll need disc replacement if there are track marks present or if the rotor has thinned out in a visible fashion. If the disc remains level by its outer rim edges and smooth, then the rotor is fine.
Step 3:Use a siphon or a turkey baster to draw out from the master cylinder the brake fluid. Depressing the brake caliper allows the fluid level to rise. Remove about ? of the fluid then leave the cap off. Reuse the fluid later if you wish.
Step 4:Compress the brake caliper using the large C-clamp. Tighten the clamp with your hand until it can't be tightened any further. This should sufficiently depress the caliper. This will make the master cylinder's level rise (watch out for overflow).
Step 5:Remove the caliper by unbolting the bolts that hold it in place. Don't twist or disturb the brake line that's linked to the caliper in question. This might create a leak. Keep your hands on the caliper and don't let it drop.
Step 6:Hang the caliper somewhere safe without twisting or disturbing the rubber brake fluid line. Don't rely on the fluid line to hold the caliper up on its own; it might altogether break from the weight of the component.
Step 7:Pull the brake disc straight back towards yourself. If you can't smoothly pull it off, it might be rusted or corroded. You might need to twist hard and pull at the same time. You can also tap the rotor's edges with a rubber mallet.
Step 8:Install the new brake rotor. Make sure it's seated all the way back against the axle plate. Put the caliper back and tighten the bolts that should hold it in place.
Step 9:Use a brake cleaning spray on the new rotor surface to get rid of any debris and dirt it might have picked up. Don't wipe the fluid away. Instead, let it dry or evaporate by itself.
Step 10:Put the wheel back then change the brake disc on other wheel of the same axle. Always replace both discs at the same axle at the same time. Fill the master cylinder with brake fluid (either the one you removed or a new supply of the fluid in question).