Highlights
- Use a wrench to loosen the lug nuts on the wheel that corresponds to the brake rotor you’ll be resurfacing.
- Carefully lift the caliper off the rotor and support it with a bungee cord or wire to prevent it from hanging by the brake line.
- Attach the brake rotor resurfacing tool to your drill or grinder according to the manufacturer’s instructions.
If you’re experiencing brake shudder, pulsation, or uneven wear on your brake pads, it may be time to resurface your brake rotors. While this task is typically performed by a mechanic, it’s possible to resurface brake rotors at home with the right tools and knowledge.
Materials You’ll Need
- Brake rotor resurfacing kit
- Safety glasses
- Gloves
- Wrench
- Torque wrench
- Caliper spreader
- Brake cleaner
- Anti-seize compound
Safety Precautions
Before beginning any brake work, it’s essential to take proper safety precautions. Wear safety glasses and gloves to protect your eyes and hands. Park your vehicle on a level surface and engage the parking brake.
Step-by-Step Instructions
1. Remove the Wheel
Use a wrench to loosen the lug nuts on the wheel that corresponds to the brake rotor you’ll be resurfacing. Lift the vehicle with a jack and remove the lug nuts completely. Pull the wheel straight toward you to remove it.
2. Remove the Caliper
Locate the caliper bolts and use a wrench to remove them. Carefully lift the caliper off the rotor and support it with a bungee cord or wire to prevent it from hanging by the brake line.
3. Remove the Brake Pads
Use a caliper spreader to compress the brake pistons and remove the brake pads. Inspect the pads for wear or damage and replace them if necessary.
4. Clean the Rotor
Use brake cleaner to thoroughly clean the brake rotor surface. Remove any dirt, grease, or rust to ensure proper adhesion of the resurfacing abrasive.
5. Mount the Resurfacing Tool
Attach the brake rotor resurfacing tool to your drill or grinder according to the manufacturer’s instructions. Ensure that the abrasive is properly aligned with the rotor surface.
6. Resurface the Rotor
Carefully hold the resurfacing tool against the rotor and apply even pressure while rotating the tool. Follow the manufacturer’s guidelines for the number of passes and direction of rotation.
7. Reassemble the Brakes
Apply anti-seize compound to the caliper mounting bolts and reinstall the caliper. Insert the brake pads and torque the caliper bolts to the specified tightness. Replace the wheel and torque the lug nuts to the manufacturer’s specifications.
Tips for Success
- Use a drill or grinder with variable speed control to prevent overheating the rotor.
- Resurface the rotor in a well-ventilated area to avoid inhaling harmful dust.
- Check the rotor thickness after resurfacing to ensure it meets the manufacturer’s specifications.
- If you’re not confident in your abilities, consult a professional mechanic for assistance.
When to Replace vs. Resurface
In some cases, brake rotors may be too damaged to be resurfaced. If the rotor has deep grooves, cracks, or excessive runout, it should be replaced. Consult a mechanic for professional advice on whether to resurface or replace your brake rotors.
Final Thoughts
Resurfacing brake rotors at home can save you money and improve your vehicle’s braking performance. By following these instructions carefully and taking the necessary safety precautions, you can successfully complete this DIY project.
What People Want to Know
1. How often should I resurface my brake rotors?
The frequency of resurfacing depends on your driving habits and the condition of your rotors. Generally, it’s recommended to resurface rotors every 30,000 to 50,000 miles.
2. Can I resurface all types of brake rotors?
Most brake rotors can be resurfaced, including slotted, drilled, and solid rotors. However, some rotors may be too thin or damaged to be resurfaced safely.
3. What are the signs that my brake rotors need resurfacing?
Common signs include brake shudder, pulsation, uneven brake pad wear, and a metallic grinding noise during braking.