Easy guide on how to change brake discs yourself.
Estimated time: 1-2 hours Difficulty: Easy/Medium
Begin by jacking up the vehicle using a wheel jack. It is best to get the wheel about 2 inches off the ground. Remove the four wheel nuts from the wheel using a socket set or similar tool. You should now be able to pull the wheel straight off the wheel hub to expose the brake discs you want to change.
Always make sure the vehicle hasn’t been used for a couple of hours to ensure that the brakes have fully cooled down, because you don’t want to burn yourself or work with hot parts.
Most discs are held on by a Philips screw which is best removed before taking any other parts off the vehicle. Once you have removed this screw, you will want to take the calliper and pads off to free the disc.
The calliper is held on by two bolts just behind the brake discs. Remove these bolts with a socket set, or in some cases an allan key, whichever tool required for the job. Once these bolts are out the calliper should pull off the disc. If it’s a bit stiff then you may have to pry it out with a flat head screwdriver. You might have to press against the piston of the calliper with the screwdriver to separate the pads, which in turn frees up the calliper.
Check your pads at this point, and if you need to change them then follow these steps. You don’t just want to leave the calliper dangling on the brake hose so you could hook the calliper to the vehicle using a scrap bit of wire or whatever is suitable.
The disc should just pull straight off or you may need to give it a light tap with a hammer from the rear. Remove the old disc and clean the surface of the hub where the disc has been resting against.
Fitting the brake discs
Once the brake discs are removed it is fairly straightforward to fit new brake discs.
Fit the new disc onto the hub, screwing it in place. Place the callipers into position and fit the two bolts, securing them tightly in place.
Put your wheel back on and secure the wheel nuts back in place, ensuring they are fitted correctly. Now remove the jack.
You will have to repeat this process for the wheel on the opposite side of the vehicle. It is always best to change both discs on the front at the same time or on the rear at the same time, to ensure equal braking on both sides.
Now pump the brake pedal to get the hydraulic fluid pressure up on the brakes and be careful when braking for the next hundred miles to allow the new brakes to settle in.