Here's a general outline. Specifics might vary slightly depending on whether you have disc brakes on the front and/or rear (most likely disc in the front at least):
Tools you'll likely need:
* Wheel chocks: Essential for safety.
* Jack and jack stands: Never work under a car supported only by a jack.
* Lug wrench: To remove the wheel.
* Socket wrench and sockets: Various sizes, likely including those for caliper bolts and possibly rotor retaining bolts (depending on the model).
* Hammer (rubber mallet preferred): To gently tap things loose.
* Penetrating oil (like PB Blaster): To help loosen rusted bolts.
* C-clamp or brake caliper compressor tool: To compress the brake caliper piston.
* Wrench for caliper slide pins (if applicable): To remove any caliper retaining clips or pins.
* Gloves and safety glasses: Protect yourself.
Steps (for a front disc brake rotor; rear brakes might vary):
1. Safety First: Chock the rear wheels securely. Raise the front of the car using the jack and securely support it on jack stands. Never work under a car supported only by a jack.
2. Remove the Wheel: Remove the lug nuts using the lug wrench. Carefully lower the wheel to the ground.
3. Compress the Caliper Piston: Use a C-clamp or brake caliper compressor tool to push the brake caliper piston back into the caliper. This is necessary to create enough space to remove the rotor. Be careful not to damage the piston seal. You may need to turn the piston in a circular motion while compressing it.
4. Remove the Caliper: Depending on the design, you might need to remove the caliper mounting bolts and carefully hang the caliper from the suspension with a wire or bungee cord to keep it out of the way. *Do not let the brake line hang unsupported.* It may be helpful to remove the caliper slide pins first, if present.
5. Remove the Rotor: Some rotors are held on by just the caliper; others may have retaining screws or bolts. Look for these. If present, remove them. Once the caliper is out of the way, the rotor should slide off the hub. If it's stuck, use a rubber mallet to gently tap it loose. Avoid damaging the rotor's surface.
6. Inspect and Clean: Inspect the hub and rotor mounting surfaces for any damage, rust, or debris. Clean thoroughly before installing a new rotor.
7. Installation (Reverse order): Install the new rotor, making sure it sits flush against the hub. Reinstall the caliper, slide pins, and caliper mounting bolts. Make sure the caliper slides freely. Reconnect the brake line. Reinstall the wheel and tighten the lug nuts.
8. Lower the Car: Carefully lower the car from the jack stands. Tighten the lug nuts fully.
9. Pump the Brakes: Pump the brake pedal several times to restore brake pressure. Check for any leaks.
Important Notes:
* Brake fluid is corrosive. Wear gloves to protect your skin. If you spill brake fluid, clean it up immediately.
* Bleeding the brakes may be necessary after you reinstall the caliper. This involves removing air from the brake lines.
* This is a simplified overview. Consult a repair manual specific to your 1975 Corvette for detailed instructions and diagrams.
Again, if you are not comfortable performing this repair, take your Corvette to a qualified mechanic. Improper brake repair can lead to dangerous situations.
