Here's a general overview. Specific steps may vary slightly depending on your Blazer's trim and options. Consult a repair manual specific to your 2002 Chevy Blazer for detailed instructions and diagrams. These instructions assume you're replacing the brake pads and rotors:
Tools You'll Need:
* Jack and jack stands (essential for safety!)
* Wheel chocks
* Lug wrench
* Socket wrench set (metric)
* Combination wrenches (metric)
* C-clamp or brake caliper compression tool
* Wire brush
* Brake cleaner
* New brake pads
* New brake rotors (recommended)
* Anti-seize lubricant
* Torque wrench (crucial for proper tightening)
* Gloves
* Safety glasses
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and use wheel chocks on the rear wheels. Jack up the front of the Blazer and securely support it on jack stands. Never work under a vehicle supported only by a jack.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Remove the Caliper:
* Locate the caliper mounting bolts. These are usually on the back of the caliper.
* Use a socket wrench to remove the bolts.
* Carefully support the caliper with a bungee cord or wire to prevent it from hanging by the brake line. This helps prevent damage to the brake line. Some people use a coat hanger to hook it onto something nearby.
4. Compress the Caliper Piston: Use a C-clamp or specialized brake caliper compression tool to push the caliper piston back into its housing. You'll need to do this to make room for the new, thicker brake pads. Be careful not to damage the piston seal.
5. Remove the Old Brake Pads: The old brake pads should now be easily removable.
6. Remove the Old Rotors: Depending on the design of your Blazer, you may need to remove caliper mounting brackets. Usually, the rotors are held on by mounting bolts. Remove those. If you're re-using the rotors, carefully clean them thoroughly with a wire brush to remove any rust and debris. This is not recommended; replacement is usually better.
7. Install the New Rotors: If replacing rotors, install the new ones. Ensure they are properly seated.
8. Install the New Brake Pads: Install the new brake pads into the caliper brackets.
9. Reinstall the Caliper: Carefully reinstall the caliper onto the brake bracket, ensuring it's correctly aligned. Replace the caliper mounting bolts and tighten them to the manufacturer's specified torque (check your repair manual).
10. Reinstall the Wheel: Put the wheel back on, and tighten the lug nuts. Don't overtighten them yet.
11. Lower the Vehicle: Lower the vehicle from the jack stands.
12. Final Tightening and Torque: Tighten the lug nuts to the manufacturer's specified torque.
13. Test and Adjust: Pump the brake pedal several times to build up pressure. Check for leaks and ensure that there's no unusual noise or vibration.
Important Considerations:
* Bleeding the Brakes: After working on the brake system, it's highly recommended to bleed the brakes to remove any air that might have entered the system. This process requires two people and a bleeding kit. Consult your repair manual for the proper bleeding procedure.
* Brake Fluid: Be aware that brake fluid is corrosive. Clean up any spills immediately.
* Repair Manual: Refer to a repair manual specific to your 2002 Chevy Blazer for detailed diagrams, torque specifications, and step-by-step instructions. This is crucial to avoid damage or injury.
* Professional Help: If you're not comfortable performing this repair yourself, take your Blazer to a qualified mechanic. Brake systems are critical safety components, and incorrect installation can lead to serious consequences.
This is a general guide. Always consult your vehicle's repair manual for specific instructions and torque specifications relevant to your particular model. Remember to prioritize safety throughout the entire process.
