Here's a general outline. Specific steps may vary slightly depending on your Alero's trim level and whether you have ABS brakes. Always consult a repair manual specific to your vehicle year and model for detailed instructions and torque specifications. A Haynes or Chilton manual is a good investment.
Tools You'll Likely Need:
* Jack and jack stands: Essential for safety. Never work under a car supported only by a jack.
* Wheel chocks: To prevent the car from rolling.
* Lug wrench: To remove the wheel.
* Socket set and ratchet: Various sizes will be needed.
* Torque wrench: Crucial for proper tightening to prevent damage.
* Ball joint separator: To separate the ball joint from the steering knuckle.
* Tie rod end separator: May be needed, depending on the design.
* Hammer and punch: Possibly needed for stubborn components.
* Penetrating oil: Helps loosen rusted or seized parts.
* Wheel bearing press: Highly recommended for proper installation of the new bearing. Improper installation can easily damage the new bearing. Improvising can lead to damage.
* Clean rags and shop towels: To keep things clean.
* Pry bar: Might be helpful for separating components.
* Replacement front wheel bearing: Make sure you get the correct part number for your Alero.
General Steps (Consult your repair manual for specifics):
1. Safety First: Park on a level surface, engage the parking brake, and chock the rear wheels. Raise the vehicle using the jack and securely support it with jack stands. Remove the wheel.
2. Disconnect Components: You'll need to disconnect various components connected to the steering knuckle, including:
* Brake caliper: Carefully remove and support it to prevent damage to the brake line.
* ABS sensor (if equipped): Carefully disconnect and protect it from damage.
* Ball joint: Separate the ball joint from the steering knuckle using a ball joint separator.
* Tie rod end (possibly): Depending on the design, you may need to separate the tie rod end from the steering knuckle using a tie rod end separator.
3. Remove the Hub and Bearing Assembly: Once the components are disconnected, the hub and bearing assembly can usually be removed. This may involve removing some bolts and possibly using a puller.
4. Press Out the Old Bearing: Use a wheel bearing press to carefully remove the old bearing from the hub assembly. Trying to do this with a hammer and punch is risky and likely to damage the hub.
5. Press In the New Bearing: Use the wheel bearing press to carefully install the new bearing into the hub assembly. Ensure it's seated correctly and evenly.
6. Reassembly: Carefully reassemble everything in the reverse order of disassembly. Pay close attention to proper torque specifications for all bolts and nuts. This is critical for safety and proper function.
7. Lower Vehicle and Test: Lower the vehicle, check all your work, and test drive the vehicle carefully.
Important Considerations:
* ABS Sensor: Be very careful with the ABS sensor. Damage to it can cause problems with your anti-lock brakes.
* Torque Specifications: Use a torque wrench and follow the torque specifications in your repair manual precisely. Over-tightening can damage components.
* Wheel Alignment: After replacing a wheel bearing, it's highly recommended to get a wheel alignment to ensure proper handling and tire wear.
Again, this is a general overview. Refer to a repair manual specific to your 2001 Oldsmobile Alero for detailed, step-by-step instructions and torque specifications. If you're unsure about any step, it's best to consult a professional mechanic. Improperly installed wheel bearings can lead to serious safety issues.
