Here's a general outline of the process. This is not a complete, detailed guide, and specific steps may vary slightly depending on your exact Blazer model and condition. Always consult a repair manual specific to your year and model for precise instructions and torque specifications.
Tools you'll likely need:
* Jack and jack stands (crucial for safety!)
* Wheel chocks
* Lug wrench
* Socket wrench set (various sizes, including metric)
* Hammer
* Pry bar or large screwdriver
* C-clamp or similar clamping device (possibly)
* Brake cleaner
* New backing plates
* New hardware (bolts, nuts, washers) – if not included with the backing plates
* Possibly a wire brush or sandpaper
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the front wheels. Raise the rear of the vehicle securely using a jack and support it with jack stands.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Brake Drum Removal (if applicable): If your Blazer has drum brakes (check your model; some had disc brakes), you'll need to remove the drum. This usually involves carefully tapping around the circumference of the drum with a hammer and drift or using a drum puller. Sometimes they're stubborn and may require penetrating oil and some persuasion.
4. Inspect and Disconnect Brake Components: Once the drum is off (if applicable), carefully inspect the brake system components. You'll need to disconnect the brake shoes, the wheel cylinder (if applicable), and any other components attached to the backing plate. Take photos as you go to help with reassembly.
5. Remove the Old Backing Plate: This is the most challenging part. The backing plate is usually held on by several bolts. Remove these bolts. There might be some rust or corrosion making this difficult. Use penetrating oil if needed. You may need to use a pry bar or screwdriver to gently leverage the backing plate free. Be very careful not to damage the brake lines or other components.
6. Clean the Hub: Thoroughly clean the wheel hub and mounting surface where the new backing plate will go. Remove any rust or debris.
7. Install the New Backing Plate: Install the new backing plate, ensuring it's properly seated and aligned. Replace the bolts, tightening them to the manufacturer's specified torque.
8. Reassemble the Brake System: Reassemble all brake components you disconnected earlier, paying close attention to the correct placement and orientation of all parts. If you're working with drum brakes, ensure the brake shoes are properly adjusted.
9. Reinstall the Wheel and Drum (if applicable): Reinstall the wheel drum (if applicable) and the wheel. Tighten the lug nuts to the proper torque.
10. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
11. Test the Brakes: After reassembly, pump the brake pedal several times to ensure the brakes are working properly. Test drive the vehicle cautiously, paying close attention to the brake performance. If anything feels off, have the brakes inspected by a professional.
Important Considerations:
* Brake Fluid: If you have to bleed the brakes, you'll need a helper and a brake bleeding kit.
* Brake Adjustment: After reassembly, the brakes might require adjustment. Consult your repair manual for the proper procedure.
* Wheel Cylinder: If the wheel cylinder is damaged or leaking, it should be replaced at the same time.
* Professional Help: If you are not comfortable with any part of this process, take your vehicle to a qualified mechanic. Brake failure can be extremely dangerous.
This is a simplified overview. Refer to a repair manual specific to your 2000 Chevy Blazer for detailed instructions and diagrams. Remember to prioritize safety throughout the entire process.
