Before you begin:
* Consult a repair manual specific to your 1971 Dodge Charger. This is absolutely crucial. Different models (e.g., base model vs. R/T) may have variations in brake systems. The manual will provide detailed diagrams, torque specifications, and procedures. Factory service manuals are best, but Haynes or Chilton manuals can also be helpful.
* Gather the necessary tools. This will include various wrenches (metric and possibly standard), sockets, a brake spring compressor, a wheel cylinder compressor (if needed), a torque wrench, brake cleaner, and potentially a bleed kit. You'll also need new brake parts (pads, shoes, cylinders, lines, etc.) – ensure they are correct for your specific Charger model.
* Safety first! Work in a well-ventilated area. Wear safety glasses and gloves. Use jack stands and wheel chocks to safely lift and support the vehicle. Never work under a car supported only by a jack.
* Understand your brake system. 1971 Chargers likely have drum brakes in the rear and disc brakes in the front (though some models may vary). The procedures differ significantly.
General Steps (Highly Simplified):
1. Preparation: Disconnect the battery negative terminal. Remove the wheels.
2. Front Brakes (Disc):
* Caliper removal: Carefully remove the caliper retaining bolts and support the caliper to prevent damage to the brake line.
* Pad removal: Remove the old brake pads.
* Caliper inspection/rebuild (if needed): Inspect the caliper for damage or leaks. If necessary, rebuild or replace the caliper.
* Rotor inspection/resurfacing/replacement: Inspect the rotors for wear. They may need resurfacing (lathe required) or replacement.
* Install new pads and caliper.
* Bleed the brakes: This is crucial to remove air from the brake lines.
3. Rear Brakes (Drum):
* Wheel cylinder removal: Remove the wheel cylinders. You likely need a wheel cylinder compressor tool to compress the pistons.
* Shoe removal: Remove the old brake shoes. This often requires a spring compressor.
* Drum inspection/resurfacing/replacement: Inspect the brake drums for wear. They may need resurfacing or replacement.
* Hardware inspection/replacement: Inspect and replace any worn or damaged hardware.
* Install new shoes, wheel cylinders, and adjusters.
* Bleed the brakes: Again, this is critical.
4. Brake line inspection: Inspect all brake lines for leaks or damage. Replace as needed.
5. Brake fluid: After bleeding, check and top off the brake fluid reservoir.
6. Reassembly: Carefully reinstall all components, ensuring everything is properly tightened to the manufacturer's specifications (using your torque wrench).
7. Test: Carefully test the brakes in a safe, controlled environment before driving the vehicle on public roads.
Warnings:
* Bleeding the brakes is essential and requires a methodical approach. Incorrect bleeding can lead to spongy brakes.
* Brake system components are under high pressure. Incorrectly working on the system can lead to injury.
* Always use the correct parts for your specific vehicle.
* If you are not comfortable performing this work, take your vehicle to a qualified mechanic. Brake failure can be deadly.
This is a highly simplified overview. Refer to your repair manual for detailed instructions specific to your 1971 Dodge Charger. Attempting this without proper knowledge and tools can be dangerous. Professional help is strongly recommended.