Here's a general outline of the process. This is NOT a substitute for a proper repair manual; deviations could lead to damage or injury.
Tools you'll likely need:
* Wheel wrench: To remove the wheel.
* Jack and jack stands: To safely lift the vehicle.
* Lug wrench: To remove the lug nuts.
* Sockets and wrenches: A variety of sizes will be needed.
* Ball joint separator: To separate the ball joint from the steering knuckle.
* Tie rod end separator: To separate the tie rod end from the steering knuckle (may be integrated with the ball joint separator).
* Hammer and punch: Potentially needed for stubborn components.
* Press (or a shop with a press): Essential for pressing the old bearing out and the new one in. This is usually the most difficult part of the job for a home mechanic.
* Bearing packing grease: To properly lubricate the new bearing.
* Torque wrench: Crucial for tightening components to the correct specifications.
* Penetrating oil (PB Blaster or similar): Helps loosen rusted or seized bolts.
General Steps (Consult your repair manual for precise details and torque specs):
1. Safety First: Secure the vehicle on jack stands. Never work under a vehicle supported only by a jack. Disconnect the negative battery terminal.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Disconnect Brake Caliper: Remove the brake caliper and hang it securely using a wire or bungee cord to prevent damage to the brake line.
4. Disconnect Tie Rod End and Ball Joint: Use the appropriate separator tools to carefully disconnect the tie rod end and ball joint from the steering knuckle. This often requires some force and penetrating oil.
5. Remove the Steering Knuckle: Remove the bolts holding the steering knuckle to the strut.
6. Remove the Old Hub and Bearing Assembly: The hub assembly and bearing are usually pressed onto the spindle. This requires a press to remove the old bearing.
7. Install New Hub and Bearing Assembly: Use the press to carefully press the new hub and bearing assembly onto the spindle. Ensure it's seated properly.
8. Reassembly: Reassemble everything in reverse order, paying close attention to torque specifications found in your repair manual. This includes reconnecting the tie rod end, ball joint, brake caliper, and reinstalling the wheel.
9. Torque Specifications: Strictly adhere to the torque specifications in your repair manual for all bolts and nuts. Incorrect tightening can lead to damage.
10. Test Drive: After reassembly, test drive the vehicle to ensure everything is working correctly and there's no unusual noise or vibration.
Important Considerations:
* Pressing the bearings: This is the most difficult part of the job for most DIYers. Unless you own a suitable press, taking it to a mechanic for this part of the job is highly recommended.
* ABS Sensor: If your Topaz has an Anti-lock Braking System (ABS), be careful not to damage the ABS sensor ring during the process.
* Bearing type: Ensure you purchase the correct type of wheel bearing for your Topaz.
Again, this is a simplified overview. Without a repair manual specific to your 1991 Ford Topaz, you risk damaging your vehicle. Invest in a reliable manual or consult a qualified mechanic if you are not comfortable performing this repair yourself. Improperly installed wheel bearings can be extremely dangerous.
