Here's a general outline of the process. Specific details may vary depending on the exact rear axle configuration (e.g., independent rear suspension vs. a solid axle). You will need a detailed service manual specific to your 1978 Corvette model for precise instructions and torque specifications.
Tools You'll Likely Need:
* Service manual: Absolutely essential for torque specs and detailed procedures.
* Wheel chocks: Safety first!
* Jack and jack stands: Securely support the car.
* Lug wrench: Remove the wheels.
* Sockets and wrenches: Various sizes, including metric and possibly SAE.
* Impact wrench (recommended): Makes removing axle nuts much easier.
* Bearing press/puller set: Essential for removing and installing the bearings. Improvising can damage the axle.
* Torque wrench: Crucial for proper tightening of axle nuts and other components.
* Penetrating oil: Helps loosen rusted parts.
* Clean rags and shop towels: Keep things clean.
* Grease: The correct type for your bearings.
* New wheel bearings and seals: Get the correct parts for your specific Corvette model.
General Steps (Consult your service manual for precise details):
1. Safety First: Securely chock the front wheels, use a jack and jack stands to lift the rear of the car safely, and support it properly.
2. Remove the Wheel: Remove the lug nuts and wheel.
3. Remove the Brake Drum or Rotor: Depending on your brake setup, remove the brake drum or rotor. You'll likely need to unbolt the caliper and possibly the backing plate. Support the caliper to prevent damage to the brake lines.
4. Remove the Axle Nut: This is often very tight and requires an impact wrench. Use caution to avoid injury.
5. Remove the Axle Flange: This step varies significantly depending on your axle setup. You might need to remove cotter pins, washers, and spacers. The service manual will guide you on the correct order and method.
6. Remove the Axle Shaft: You may need to gently tap the axle out.
7. Remove the Old Bearings and Seals: This is where the bearing press/puller set is crucial. Attempting to remove these without the proper tools will likely damage the bearings and axle housing.
8. Clean the Axle Housing: Thoroughly clean the axle housing to remove any old grease, debris, or rust.
9. Install New Seals: Install the new seals carefully, ensuring they're seated properly.
10. Install New Bearings: Use the bearing press to install the new bearings precisely.
11. Reassemble: Carefully reassemble all components in the reverse order of removal, ensuring everything is properly aligned and torqued to the manufacturer's specifications (found in your service manual). Pay close attention to the correct order of spacers, shims, and washers.
12. Torque Specifications: Strictly adhere to the torque specifications in your service manual for all bolts and nuts. Incorrect torque can lead to bearing failure or axle damage.
13. Check for Proper Bearing Play: After assembly, check for the correct amount of bearing play. Too much or too little play indicates a problem.
14. Reinstall the Wheel and Brake Components: Carefully reinstall the wheel, brake components, and lug nuts, ensuring the lug nuts are torqued correctly.
Disclaimer: This is a simplified overview. Incorrect procedures can result in serious damage to your vehicle or personal injury. Consult a detailed service manual specific to your 1978 Corvette and consider seeking professional help if you lack experience with this type of repair. The specific steps may vary depending on the exact model and options of your Corvette.
