1. Gather tools and materials.
You will need:
- New brake servo
- Brake fluid
- Socket set
- Jack and jack stands
- Wrench set
- Screwdriver
- Pliers
- Safety glasses
2. Prepare the car.
Park the car on a level surface and apply the parking brake. Turn off the engine and allow it to cool down. Disconnect the battery’s negative terminal. Jack up the front of the car and secure it on jack stands. Remove the front wheels.
3. Remove the old brake servo.
Disconnect the brake lines from the servo using a wrench. Be careful not to spill any brake fluid. Remove the nuts and bolts that secure the servo to the firewall. Remove the servo from the car.
4. Install the new brake servo.
Position the new servo in place against the firewall. Secure it using the nuts and bolts that you removed in the previous step. Reconnect the brake lines to the servo. Tighten the nuts until snug.
5. Bleed the brake system.
Open the bleed screws on the brake calipers, starting with the one farthest from the master cylinder. Have an assistant press on the brake pedal while you open and close the bleed screw until all of the air bubbles have been expelled from the system. Repeat this process for each brake caliper.
6. Test the brakes.
Start the car and pump the brake pedal several times until it feels firm. Check for any leaks in the brake system. If there are no leaks, take the car for a test drive to ensure that the brakes are working properly.
7. Reinstall the front wheels and reconnect the battery.
Reinstall the front wheels and tighten the lug nuts. Tighten the nuts until snug, then lower the car off the jack stands. Reconnect the battery’s negative terminal.
