Tools You'll Need:
* Wheel chocks: Essential for safety.
* Jack and jack stands: Never work under a vehicle supported only by a jack.
* Lug wrench: To remove the wheel.
* Hammer: May be needed to break loose stubborn parts.
* Screw driver (flathead and possibly Phillips): For removing the retaining clips and potentially the parking brake cable.
* Socket wrench and sockets: To remove the axle nut (if applicable) and possibly other fasteners. Sizes will vary depending on your specific vehicle. Consult your owner's manual or a repair manual for specifics.
* C-clamp or brake spring compressor tool: To compress the return springs. This is highly recommended, but you *might* be able to do it carefully by hand. However, using a tool is safer and easier.
* Penetrating oil (PB Blaster or similar): Helps loosen rusted parts.
* Wrench(es) for brake adjuster: For adjusting the brake shoes after reassembly.
* Gloves: To keep your hands clean.
* Shop rags or paper towels: For cleaning.
* Brake cleaner: For cleaning brake components. This is crucial.
Procedure:
1. Safety First: Chock the front wheels, engage the parking brake, and raise the rear of the vehicle securely using a jack and jack stands. Make sure the vehicle is stable and level.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Inspect the Drum: Look for any obvious damage to the drum.
4. Remove the Drum: The drum itself is usually held on by friction. You might be able to tap it off gently with a rubber mallet or a soft-faced hammer around its circumference. Never hit the drum directly with a hard hammer. If it's stuck, carefully work it loose. Penetrating oil applied a few hours in advance can greatly assist. If the parking brake is fully engaged, it will make removing the drum much harder. Consider slightly releasing the parking brake.
5. Remove the Parking Brake Cable: You'll likely need to loosen or remove the parking brake cable. This usually involves releasing a retaining clip or a bolt. Consult a repair manual for your specific vehicle's parking brake mechanism.
6. Inspect the Brake Shoes: Now you'll see the brake shoes, springs, and other components. Inspect them for wear and tear. Replace any worn or damaged parts.
7. Remove the Brake Springs: Carefully compress the return springs using the C-clamp or spring compressor. This is critical to prevent the springs from shooting out and possibly injuring you. The process varies slightly depending on the type of springs. Take photos before you start to help you remember the assembly order.
8. Remove the Brake Shoes: Once the springs are compressed, carefully remove the brake shoes. You'll likely need to separate them from the wheel cylinder. Again, take photos or make notes of the components' positions.
9. Clean Everything: Thoroughly clean all brake parts with brake cleaner.
10. Reassembly (Reverse Order): Reassembly is the reverse of disassembly. Pay close attention to the spring arrangement and ensure everything is properly seated. Make sure the brake shoes are adjusted correctly before reinstalling the drum. You'll usually use the adjuster mechanism for this.
11. Reinstall the Drum: Gently tap the drum back onto the axle.
12. Reinstall the Wheel and Lug Nuts: Tighten the lug nuts in a star pattern.
13. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
14. Test the Brakes: After reassembly, pump the brake pedal several times and check for proper operation. Be sure to test the emergency brake.
Important Considerations:
* Repair Manual: A repair manual specific to your 2003 Chevy Tracker is highly recommended. It will provide detailed diagrams and instructions specific to your vehicle's brake system.
* Brake Fluid: If you're replacing any components of the braking system, you may need to bleed the brakes afterward.
* Professional Help: If you're not comfortable working on your brakes, it's best to take your vehicle to a qualified mechanic. Brake failure can have serious consequences.
This guide provides a general overview. Always consult a repair manual for precise instructions and diagrams specific to your vehicle. Remember safety is paramount when working on your brakes.
