Here's a general outline of the process. This is NOT a substitute for a detailed repair manual specific to your vehicle. Always consult a repair manual for precise instructions, torque specifications, and diagrams for your specific year and model.
Tools You'll Likely Need:
* Repair Manual: Absolutely essential.
* Socket set (metric): Various sizes.
* Wrench set (metric): Various sizes.
* Screwdrivers (Phillips and flathead):
* Brake line wrench: To avoid damaging brake lines.
* Vacuum pump: To bleed the brakes after installation (unless you have a power bleeder).
* New brake booster: Ensure you get the correct one for your 1997 Buick Skylark.
* New vacuum hose(s):
* C-Clamps: May be needed to hold lines while working.
* Shop rags: To clean up brake fluid spills.
* Safety glasses: Protect your eyes from brake fluid.
* Gloves: Protect your hands from brake fluid and dirt.
General Steps (Consult Your Repair Manual for Precise Instructions):
1. Disconnect the Battery: This is crucial to prevent electrical shorts.
2. Release Brake System Pressure: Carefully depress the brake pedal several times to release any pressure in the system.
3. Drain Brake Fluid: Open the brake fluid reservoir and drain some fluid to make room for the potential fluid loss during the booster replacement.
4. Disconnect Vacuum Line: Disconnect the vacuum line from the brake booster.
5. Disconnect Brake Lines: Carefully disconnect the brake lines from the booster using the correct brake line wrench. Be prepared for some brake fluid to leak; have rags ready. It's a good idea to label the lines so you know where they go during reassembly.
6. Disconnect Master Cylinder Push Rod: Disconnect the push rod from the master cylinder to the brake booster. This will likely involve removing a retaining clip or nut.
7. Remove the Brake Booster: This is usually held in place by bolts. You may need to carefully maneuver the booster out of the engine compartment. It's often a tight fit.
8. Install the New Brake Booster: Reverse the removal process, carefully aligning the push rod and connecting the brake lines. Make sure everything is properly seated before tightening.
9. Reconnect Vacuum Line: Reconnect the vacuum line to the new brake booster.
10. Reconnect Master Cylinder Push Rod: Carefully reconnect the push rod from the master cylinder.
11. Bleed the Brakes: This is critical. You'll need to bleed the brakes at each wheel to remove any air that may have entered the system during the replacement. Use a vacuum pump or power bleeder for easier bleeding. If you don't have one, have a helper press and hold the brake pedal while you open and close the bleeder valves at each wheel.
12. Check Brake Fluid Level: Top off the brake fluid reservoir to the correct level.
13. Reconnect Battery: Reconnect the battery.
14. Test the Brakes: Test the brakes thoroughly before driving the vehicle. Be sure to test them at low speeds initially, gradually increasing your speed as you build confidence.
Important Considerations:
* Brake Fluid is Corrosive: Brake fluid is highly corrosive and can damage paint and other materials. Clean up any spills immediately.
* Air in the Brake Lines: Air in the brake lines can lead to spongy brakes or brake failure. Proper bleeding is essential.
* Torque Specifications: Always tighten bolts and nuts to the manufacturer's specified torque. Using a torque wrench is highly recommended.
Again, this is a general overview. Always refer to a repair manual specific to your 1997 Buick Skylark before attempting this repair. If you're unsure about any step, consult a qualified mechanic. Improper brake repair can lead to serious injury or death.
