Here's a general outline. Consult a repair manual specific to your '86 Chevy Celebrity for detailed instructions and diagrams. This is crucial as variations may exist depending on the engine and trim level.
Tools You'll Likely Need:
* Socket set (metric)
* Wrenches (metric)
* Screwdrivers (Phillips and flathead)
* Brake fluid catch container
* New brake fluid
* Bleeder wrench
* Shop rags or paper towels
* Possibly a helper
Procedure (General Steps):
1. Disconnect the Battery: This prevents accidental short circuits.
2. Release Brake System Pressure: Pump the brake pedal several times until it becomes firm. This helps minimize fluid spillage.
3. Remove the Master Cylinder Reservoir: This gives you more room to work. Locate the reservoir (usually on top of the booster) and carefully remove it. Be prepared for some fluid spillage.
4. Disconnect Vacuum Hose: The power booster will have a vacuum hose connected to it. Carefully disconnect this hose, plugging the end to prevent air from entering the system.
5. Disconnect Brake Lines: There will be one or more brake lines attached to the master cylinder. Use a wrench to carefully loosen and disconnect these lines. Have a container ready to catch any remaining brake fluid.
6. Remove Nuts and Bolts Securing the Booster: The booster is usually bolted to the firewall. Locate and carefully remove these fasteners. This step may require some maneuvering depending on the space.
7. Remove the Booster: Carefully remove the power booster from the firewall. It may be heavy.
8. Install New Booster (Reverse Procedure): Install the new booster following the reverse order of removal. Ensure all connections are secure.
9. Reconnect Master Cylinder Reservoir: Refill the reservoir with fresh brake fluid.
10. Bleed the Brakes: This is absolutely essential. Air in the brake lines will significantly reduce braking performance and is dangerous. Use a bleeder wrench and a helper to pump and bleed each wheel's brake line until all air is removed. Refer to your repair manual for the proper bleeding sequence.
11. Reconnect the Battery: Once you're sure the brakes are bled properly and feel firm, reconnect the battery.
12. Test the Brakes: Test the brakes thoroughly in a safe, controlled environment before driving the vehicle.
Important Considerations:
* Brake Fluid is Corrosive: Wear appropriate safety glasses and gloves.
* Proper Bleeding is Critical: Improperly bled brakes are extremely dangerous.
* Repair Manual is Essential: This outline is a generalization. Consult your repair manual for specific details and torque specifications.
* If Unsure, Seek Professional Help: If you are not comfortable performing this repair, take your vehicle to a qualified mechanic.
This process involves working with the brake system, a critical safety component. Improperly performing this task can lead to serious injury or death. Take your time, be careful, and consult your repair manual. If you have any doubts, seek professional assistance.
