Replacing brake discs is a task that many car owners can perform themselves, saving on service costs. However, it requires basic mechanical knowledge and the right tools. In this step-by-step guide, we will explain how to replace brake discs on your car yourself.
Preparation
Tools and Materials
Before starting the replacement of brake discs, make sure you have all the necessary tools and materials. You will need:
- New brake discs
- New brake pads (recommended to replace along with the discs)
- Torque wrench
- Socket wrench set
- Screwdriver
- Car jack and stands
- Wheel chocks
- Wire brush
- Brake grease
- Protective gloves and glasses
Safety First
Before starting work, ensure that the car is parked on a flat, stable surface. Engage the parking brake and use wheel chocks to prevent the vehicle from moving accidentally. Lift the car using the jack and secure it on stands.
Step 1: Removing the Wheel
Once the car is securely on stands, remove the wheel. Use the socket wrench to loosen the lug nuts holding the wheel to the hub. Set the wheel aside to gain access to the brake disc and caliper.
Step 2: Removing the Brake Caliper
The brake caliper is attached to the bracket with bolts. Use the socket wrench to loosen these bolts. Once the bolts are removed, carefully take off the brake caliper and hang it on a hook or string to avoid straining the brake lines.
Step 3: Removing the Old Brake Pads
After removing the caliper, take out the old brake pads. They may be held in place by clips or springs that need to be removed. Check the condition of the pads and disc – if they are heavily worn, replacement is necessary.
Step 4: Removing the Brake Disc
To remove the old brake disc, you may need to remove additional screws securing it to the hub. Use the appropriate wrench to do this. If the disc is stuck due to corrosion, gently use a rubber mallet to loosen it.
Step 5: Preparing the New Brake Disc
Before installing the new brake disc, thoroughly clean the hub using a wire brush to remove rust and debris. Apply a thin layer of brake grease to the hub to prevent future corrosion and facilitate the disc installation.
Step 6: Installing the New Brake Disc
Place the new brake disc onto the hub and secure it with the screws. Ensure the disc is properly seated and tighten the screws to the correct torque using a torque wrench.
Step 7: Installing New Brake Pads
Place the new brake pads into the caliper. Make sure they are correctly seated and secured with clips or springs. It’s also advisable to apply a thin layer of brake grease to the back of the pads to prevent squeaking.
Step 8: Reinstalling the Brake Caliper
Reinstall the brake caliper in place, ensuring all parts are properly aligned. Tighten the bolts securing the caliper to the bracket to the correct torque using a torque wrench.
Step 9: Reinstalling the Wheel
Put the wheel back in place and hand-tighten the lug nuts. Lower the car from the jack and tighten the lug nuts with a torque wrench, following the recommended torque specifications.
Step 10: Testing the Brakes
After completing the installation, make sure all tools and materials are removed from under the car. Before driving, perform several test brakes at low speed to ensure the new brake discs and pads are working correctly.
Conclusion
Replacing brake discs yourself can be a rewarding task that saves on service costs. However, it is essential to follow all steps and safety recommendations carefully. Remember that properly functioning brakes are crucial for your safety on the road, so if you have any doubts about your abilities, it is better to consult a professional mechanic.
