Tools You'll Need:
* Repair Manual: Absolutely essential. Provides specific torque specifications and step-by-step instructions for your model.
* Jack and Jack Stands: Safely lift and support the vehicle.
* Wheel Chocks: To prevent accidental rolling.
* Lug Wrench: To remove the wheel.
* Wheel Hub Socket (usually 30mm or 32mm): To remove the wheel hub assembly.
* Hammer and Punch: For removing parts.
* Large C-Clamp or Bearing Separator: To separate the wheel bearing from the hub.
* Torque Wrench: Crucial for proper tightening of bolts.
* Penetrating Oil (PB Blaster or similar): To loosen rusted or seized components.
* New Wheel Bearings (and any related seals or races): Get the correct part number from your manual or a parts store, providing your VIN.
* Grease: High-quality wheel bearing grease.
* Socket Set and Wrenches: A variety of sizes.
* Safety Glasses and Gloves: Protect yourself.
General Steps (Consult your repair manual for precise details):
1. Safety First: Park on a level surface, engage the parking brake, and use wheel chocks on the rear wheels. Wear safety glasses and gloves.
2. Jack Up and Support: Safely jack up the vehicle and securely support it with jack stands under the frame near the wheel you're working on. Never work under a vehicle supported only by a jack.
3. Remove the Wheel: Remove the lug nuts and carefully remove the wheel.
4. Remove the Brake Caliper: Remove the caliper and either hang it from the suspension or securely tie it out of the way to avoid putting tension on the brake line.
5. Disconnect ABS Sensor (if applicable): Carefully disconnect the ABS sensor wire from the hub assembly.
6. Remove the Rotor: Remove the rotor (brake disc) – this may require removing a retaining bolt or carefully tapping it off.
7. Remove the Wheel Hub and Bearing Assembly: This is where the hub socket comes in. It might be stubborn; use penetrating oil if needed. Once the nut is off, carefully remove the hub and bearing assembly. This may involve some prying or tapping.
8. Separate the Bearing from the Hub: This is typically the most difficult part. You will likely need a bearing separator or a large C-clamp to press the bearing out of the hub. Use caution to avoid damaging the hub or new bearing.
9. Clean and Inspect: Clean the hub thoroughly. Inspect the hub for damage; if there's significant wear, it might need replacing.
10. Install New Bearing: Pack the new bearing with grease. Carefully press the new bearing into the hub using the correct tools (often a specific bearing installer is recommended).
11. Reassembly: Follow the disassembly steps in reverse order, ensuring everything is properly aligned and torqued to the specifications in your repair manual. This includes reinstalling the rotor, caliper, wheel, and lug nuts. Torque specifications are crucial here to prevent damage and ensure proper operation.
12. Lower the Vehicle: Carefully lower the vehicle.
13. Test Drive: After reassembly, test drive the vehicle at various speeds to ensure everything is functioning correctly. Listen for any unusual noises.
Important Notes:
* This is a simplified overview. Many steps involve intricate details and specific procedures. Using a repair manual is non-negotiable.
* If you're not comfortable with this type of repair, take your vehicle to a qualified mechanic. Improperly installed wheel bearings can lead to serious accidents.
* Always use the correct parts. Using incorrect parts can damage your vehicle.
* Torque specifications are crucial. Use a torque wrench and follow the specifications in your repair manual.
This information is for guidance only and does not replace the necessity of a detailed repair manual specific to your 1998 Chevrolet Malibu. Proceed with caution and consult a professional if you have any doubts.
