Replacing the brake pads on a classic car like the 1969 AMC AMX is a task that can significantly improve your car's braking performance and safety. Worn-out brake pads can be identified by a squealing noise when braking, reduced braking efficiency, or a grinding sound which indicates the pads are completely worn down and the metal backing is contacting the rotor. To ensure your AMC AMX stops smoothly and safely, it's crucial to replace the brake pads when necessary. Here is how to solve this issue.

Step 1: Preparation

Before you start, gather all necessary tools and materials:

• New brake pads specific to the 1969 AMC AMX
• Jack and jack stands
• Lug wrench
• Socket and ratchet set
• C-clamp or brake caliper piston tool
• Brake cleaner
• Bungee cord or rope

Additionally, ensure your workspace is clean and your car is on a stable, flat surface.

Step 2: Lifting the Car

1. Loosen the Lug Nuts: Begin by loosening the lug nuts on all the wheels where you intend to replace the brake pads. Use the lug wrench to break each nut free, but do not remove them completely yet.
2. Jack Up the Car: Using a reliable car jack, lift the AMC AMX from the designated jack points located behind the front wheels or in front of the rear wheels under the frame.
3. Secure the Car: Place the jack stands securely under the car's frame to support the car while working. Always ensure the stands are locked in place before working underneath the car.

Step 3: Removing the Wheels

1. Remove the Lug Nuts: Now that the car is safely lifted, remove the loosened lug nuts completely and pull the wheels off to expose the brake components.

Step 4: Accessing the Brake Caliper

1. Locate the Caliper: The brake caliper is a large metal component that holds the brake pads against the rotor. It is situated around the outer edge of the rotor.
2. Remove Caliper Bolts: Use the appropriate socket to remove the bolts securing the caliper to the caliper bracket. These bolts are usually located at the backside of the caliper, top, and bottom.

Step 5: Removing the Brake Pads

1. Detach the Caliper: Carefully slide the caliper off the rotor. Support the caliper using a bungee cord or rope tied to the suspension. Avoid letting it hang by the brake hose as this can cause damage.
2. Remove Old Pads: The brake pads are housed within the caliper bracket. Simply slide the old brake pads out of their slots.

Step 6: Preparing the Caliper

1. Retract the Piston: Using a C-clamp or a brake caliper piston tool, slowly push the caliper piston back into the caliper housing. This is necessary to make room for the new, thicker pads. Place one of the old brake pads against the piston surface to evenly distribute force from the clamp.

Step 7: Installing the New Brake Pads

1. Position New Pads: Slide the new brake pads into the caliper bracket in the same orientation as the old pads. They should fit snugly into the slots.
2. Reattach Caliper: Carefully slide the caliper back over the rotor and new pads. Secure it by tightening the caliper bolts you previously removed.

Step 8: Reinstallation of Wheels

1. Reattach Wheels: Place the wheel back onto the hub. Hand-thread the lug nuts to hold the wheel in place.
2. Lower the Car: Carefully lift the car using the jack to remove the jack stands, then lower the car back onto the ground.

Step 9: Final Tightening and Testing

1. Tighten Lug Nuts: With the car on the ground, use the lug wrench to tighten the lug nuts in a crisscross or star pattern to ensure even pressure.
2. Test the Brakes: Before driving, pump the brake pedal several times to ensure the brake pads are properly seated. The pedal should feel firm once the pads are in place.

Conclusion

Replacing the brake pads on your 1969 AMC AMX is a task that can greatly enhance your vehicle's safety and performance. With the proper tools and careful attention to detail, you can complete this project efficiently. Always remember to test your brakes in a safe environment before resuming normal driving.