By YOUCANIC on May 6, 2019
This guide provides general guidance on how to change the front brake pads and rotors on Mazda CX-9, 1st generation crossover SUV. These instructions apply to CX-9 model years: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017.
A list of tools and parts required to change the brake pads and rotors on your Mazda CX-9 has been provided below.
Start by engaging the parking brakes and ensure the gear shifter is in Park. Next, you should access the brake fluid reservoir. Open the hood and remove the brake fluid reservoir cap. This is necessary and will make it easy later when you press the caliper pistons in.
Loosen Lug Nuts
Before you raise up the car make sure to break loose the lug nuts. Do not remove them yet, just loosen them a turn or so.
Support with Jack Stands
Always support the vehicle with jack stands. Do not rely only on jack only. Besides the jack stands and jacks, we recommend that you slide the wheels under the car. Remove tire. Remove lug nut.
Press the caliper piston. If you plan on using a flat screwdriver to press the caliper piston in, this is the time. If you are using C-Clamp or Brake Pad Compression tool skip this step.
Remove Caliper Bolts
Locate the two bolts on the back of the front brake caliper. Remove both bolts. Use a 17mm socket and a ratcheting wrench to loosen the lower and upper caliper bolts on the back of the caliper and pull each bolt slightly out. You need to slide them out to allow room to remove the caliper.
Remove Brake Pads
Once you remove the two bolts you will be able to pull out the caliper and remove the brake pads. Loosen the two rotor retaining bolts using a Phillips screwdriver. These bolts can be difficult to come out.
Notice the location of the wear sensors. If your vehicle uses wear sensors notice the location of the sensor and the orientation of the wires. You need to make sure to install the new sensors in the exact same way.
Secure the brake caliper.
Use a wire to secure the brake caliper. Do not let the brake caliper hang as this can cause damage to the brake hose. Lift the caliper off the brake pads and tie it with a rope to the strut to keep it from falling and void putting tension on the brake line.
Remove Brake Pad Bracket Before you can remove the rotor you need to remove the brake pad / caliper bracket. It is held in place with two bolts.
Typically these are 17mm bolts. Remove the bolts using a breaker bar.
Removing the old rotor can be tricky. First, remove the screw that holds the rotor secure. Next, you need to remove the rotor. Try wiggling the rotor back and forth. If the rotor does not come loose you may have to use a hammer to get it off.
Also, spray penetrating oil and let it sit for 10 minutes before you try to remove the rotor.
It is time to install the new rotor. We would recommend that you clean the hub area with a steel wire brush before you install the new rotor. Compare between the old and the new rotors to make sure they are the same size and thickness then fit the new rotor carefully. If you are installing new slotted rotors, make sure they are fitted correctly so that they would spin in the proper direction.
Install the new rotor. Slide the new rotor in place. Tighten the rotor retaining bolts.
Next, install the bracket and tighten the two bolts on the back. Remember the bolts on the back of the brake pad bracket need to be tight. If you are using a torque wrench make sure to torque them at 70 ft-lbs.
Using a dry towel or a rag, you can clean the dirt from the calipers and the pistons with a special spray for cleaning brake parts.
The new brake pads will probably be thicker than the older ones, you will need to use an even surface (e.g the old brake pad) to press back the caliper pistons so you would be able to fit the new brake pads inside the brake calipers. A C-clamp can be used to compress the pistons backward. Don't push the pistons too far, only until the pistons are in-line with the rubber dust boot. Put the new brake pads in its place, make sure they are tightly and well-fitted. After fitting the new brake pads, you might experience light braking noise or squeaking; to eliminate that noise you can use CRC Disc Brake Quiet for brake pads.
Install new caliper. Loosen the caliper from the rope carefully and tighten the lower caliper bolt using a 17mm socket and ratcheting wrench. Use brake caliper grease to lubricate the caliper bolts. Install new caliper and tighten the two bolts.
Refit the front wheel and spin the lug nuts with your hand. tighten the lug nuts in a criss-cross pattern. Lower the vehicle until it puts some weight onto the wheel to prevent it from spinning then complete tightening the lug nuts.
Get into the driver's seat, start the car up and pump the brake pedal a few times to restore brake pressure.
Check the brake fluid level in the container and make sure that it is above the "MIN" (minimum) indicator. If it is low, add the recommended brake fluid. Once the brake fluid level is correct, replace the brake fluid container cap.
Check that the lug nuts are tightened properly.