1. Identify your brake system:
* Drum Brakes: Look behind the wheel. If you see a cylindrical drum-shaped component, you have drum brakes. These are less common on GT models of this year but still possible.
* Disc Brakes: If you see a disc (a flat, round metal plate) and a caliper clamping onto it, you have disc brakes. This is far more likely on a 1998 Mustang GT.
2. Decompressing the piston:
* If you have DISC brakes: You'll need a C-clamp or specialized brake piston compression tool. The process is as follows:
* Prepare: Remove the wheel. Clean the caliper and surrounding area. You might need to remove the brake pads to get better access.
* Compress the piston: Carefully position the C-clamp or tool against the piston. Avoid damaging the piston's surface. Slowly and steadily compress the piston. The piston may rotate as you compress it; you may need to turn it manually to keep even pressure.
* Be careful: Brake fluid will be expelled as you compress the piston. Have a clean rag ready to absorb the fluid. Do not get brake fluid on your skin or painted surfaces. Brake fluid is corrosive.
* Reinstall: Once the piston is fully compressed enough to install new pads, carefully reinstall the pads and caliper.
* If you have DRUM brakes: Drum brakes usually have self-adjusters that automatically adjust the brake shoes. However, sometimes they need manual adjustment or might be seized. If you need to decompress the wheel cylinder (which operates the brake shoes), you might need to:
* Use a C-Clamp (carefully): Similar to disc brakes, a C-clamp can be used, but extreme care is needed to avoid damaging the wheel cylinder. Often this isn't necessary; freeing up the shoes and adjusting them is usually sufficient.
* Manual Adjustment: Some drum brake systems have adjuster mechanisms that can be turned with a screwdriver or special tool. Refer to a repair manual for your specific car model to locate and use the adjuster correctly.
Important Considerations:
* Repair Manual: A repair manual specific to your 1998 Mustang GT is highly recommended. It will provide detailed instructions and diagrams for your particular brake system.
* Safety: Brake work involves working with pressurized systems and corrosive fluids. Always take appropriate safety precautions, including wearing safety glasses and gloves.
* Bleeding the Brakes: After working on the brakes, you'll likely need to bleed the brakes to remove any air that may have entered the system. This is crucial for proper braking performance.
If you are unsure about any step, it is strongly recommended that you take your vehicle to a qualified mechanic to have the brakes serviced. Improper brake repair can lead to dangerous consequences.
