However, if you're determined to do it yourself, here's a general outline of the steps. This is not a comprehensive guide and should not be considered a substitute for a professional repair manual specific to your vehicle. You'll need that manual for precise torque specifications and diagrams.
Tools You'll Likely Need:
* Socket set (metric): Various sizes, including deep sockets.
* Wrench set (metric): Combination wrenches are helpful.
* Screwdrivers (Phillips and flathead): Various sizes.
* Brake fluid collector: To catch spilled brake fluid.
* New brake booster: Make sure it's the correct part for your specific Concord model.
* Vacuum pump: To test the new booster (highly recommended).
* Torque wrench: Crucial for proper tightening.
* Safety glasses: Protect your eyes from brake fluid.
* Gloves: Protect your hands.
* Jack and jack stands: To safely lift the vehicle.
* Wheel chocks: For added safety.
General Steps (Consult your repair manual for specifics):
1. Safety First: Disconnect the negative battery terminal. This prevents electrical shorts. Chock the wheels and securely support the vehicle on jack stands.
2. Fluid Drainage: Carefully open the brake fluid reservoir and remove the appropriate amount of fluid to make room for the new booster. You may need to carefully drain some fluid during the process. Brake fluid is corrosive, wear appropriate safety gear.
3. Master Cylinder Access: You'll likely need to remove or partially remove components to access the brake booster. This may involve removing the master cylinder, or at least partially unbolting it for sufficient clearance. This step varies greatly depending on the specific year and engine configuration. Your repair manual is crucial here.
4. Booster Removal: Disconnect the vacuum line from the booster. Unbolt the booster from the firewall. This will involve several bolts and potentially some nuts. Be prepared for some rust or corrosion.
5. Installation of New Booster: Carefully install the new brake booster, ensuring proper alignment. Bolt it securely, using the correct torque specifications from your repair manual. Reconnect the vacuum line.
6. Master Cylinder Reinstallation (if removed): Reinstall the master cylinder, ensuring proper alignment and connection to the brake lines.
7. Bleed the Brakes: This is CRITICAL. Air in the brake lines can cause brake failure. You'll need to bleed the brakes at each wheel to remove any air introduced during the process. Use a helper to pump the brake pedal while you open the bleeder valves. Refer to your repair manual for the correct bleeding procedure.
8. Refill Brake Fluid Reservoir: Check the brake fluid level and refill as needed.
9. Test the Brakes: Before driving, test the brakes thoroughly in a safe, controlled environment. Make sure they feel firm and responsive. If the brakes feel spongy, you likely have air in the lines and need to bleed them again.
10. Vacuum Test (Highly Recommended): Use a vacuum pump to test the new booster's vacuum operation to ensure it's working correctly before reinstalling it.
Disclaimer: This is a simplified overview. The actual procedure may be significantly more complex and may involve additional steps not mentioned here. Incorrectly performing this repair could lead to serious injury or death. Always consult a professional repair manual specific to your 2003 Chrysler Concorde and consider seeking professional help if you are not comfortable performing this repair yourself.
