Safety First:
* Engage the parking brake firmly. This is crucial to prevent the vehicle from rolling.
* Use jack stands. Never work under a vehicle supported only by a jack.
* Wear safety glasses. Brake dust can irritate your eyes.
* Use gloves. Brake dust is also messy and can be harmful to your skin.
Tools You'll Need:
* Jack and jack stands
* Lug wrench
* Wheel chocks
* Socket wrench and sockets (various sizes)
* Wheel/tire removal tools (if necessary)
* Hammer (possibly a rubber mallet)
* C-clamp or brake caliper compression tool
* Penetrating oil (like PB Blaster)
* Wire brush (optional, for cleaning)
* Clean rags or shop towels
Steps:
1. Secure the Vehicle: Park on a level surface, engage the parking brake, and chock the front wheels. Jack up the rear of the Blazer and securely support it with jack stands.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Remove the Brake Caliper:
* Compress the caliper piston: Using a C-clamp or caliper compression tool, carefully compress the brake caliper piston. This will give you enough room to remove the rotor. Be careful not to damage the piston seal. If you're not familiar with this, look up a video on YouTube specific to your Blazer model to avoid damaging the caliper.
* Disconnect the brake caliper: There are usually two bolts holding the caliper to the caliper bracket. Remove these bolts and carefully hang the caliper out of the way using a wire or bungee cord. Do not let the brake line hang freely; support it to prevent damage.
4. Remove the E-brake Cable (if applicable): Some Blazer models might have an integrated emergency brake cable that needs to be detached from the caliper bracket. Check your manual.
5. Remove the Rotor: The rotor should now be free. Sometimes they are held on by rust or corrosion. If it's stuck, try tapping lightly around the edges with a rubber mallet, working your way around the circumference. Penetrating oil applied beforehand can help. Avoid damaging the rotor's surface if you plan to reuse it.
6. Clean the Hub: Once the rotor is off, clean the wheel hub thoroughly with a wire brush to remove any rust or debris.
7. Installation: Installation is the reverse of removal. Remember to apply the correct torque specifications for all the bolts when reinstalling the components, as stated in your owner's manual.
Important Considerations:
* Rust and Corrosion: Older vehicles, especially those exposed to the elements, often have rust that can make this job more difficult. Penetrating oil and patience are key.
* Brake Fluid: Be careful not to spill brake fluid. It can damage paint and is harmful to the environment.
* Brake Pad Wear: While you have the caliper off, inspect the brake pads for wear. Replace them if necessary.
If you're uncomfortable performing this repair yourself, take your Blazer to a qualified mechanic. Improperly performed brake work can be dangerous.
