Tools You Will Need:
* Jack and jack stands: Absolutely essential for safety. Never work under a vehicle supported only by a jack.
* Lug wrench: To remove the wheels.
* Wheel chocks: To secure the vehicle.
* Sockets and wrenches: A variety of sizes, including metric and possibly SAE, will be needed. Consult your repair manual for specific sizes.
* Hammer and punch: For driving out components.
* Bearing packing grease: Use the correct type specified in your repair manual.
* Pickle fork or ball joint separator: To separate the ball joint from the steering knuckle.
* C-clamp: May be needed depending on the method used to separate the ball joint.
* Torque wrench: Crucial for tightening bolts to the correct specifications.
* Penetrating oil (PB Blaster, etc.): To help loosen rusted or seized components.
* New wheel bearings and seals: Ensure you get the correct parts for your specific Suburban. Replacing both bearings (inner and outer) is recommended, even if only one appears bad.
* Repair manual: Highly recommended for detailed instructions, torque specifications, and diagrams.
General Steps (Consult your repair manual for precise steps):
1. Safety First: Park the Suburban on a level surface, engage the parking brake, and use wheel chocks on the wheels that are not being worked on. Raise the vehicle securely using the jack and place it on jack stands.
2. Remove the Wheel and Brake Caliper: Remove the lug nuts, then the wheel. Carefully remove the brake caliper and support it with a wire or bungee cord to prevent damage to the brake line.
3. Disconnect the Ball Joint: This is often the most challenging part. You'll likely need a pickle fork or ball joint separator to carefully separate the ball joint from the steering knuckle. Use penetrating oil to help loosen things up. Be extremely careful not to damage the ball joint or knuckle.
4. Remove the Steering Knuckle: Once the ball joint is disconnected, remove the cotter pin and castle nut from the lower control arm. The steering knuckle should now come off.
5. Remove the Old Wheel Bearing: The old bearing assembly (inner and outer races) will be pressed into the knuckle. This often requires a bearing puller, but some methods involve using a hammer and punch (carefully!). This step requires patience and precision to avoid damaging the knuckle.
6. Install the New Wheel Bearing: Carefully press the new wheel bearings and seals into the knuckle. Use a suitable bearing installation tool to avoid damaging the new bearings.
7. Reassembly: Carefully reverse the disassembly process. Make sure all components are properly seated and aligned.
8. Torque Specifications: Use your torque wrench to tighten all bolts to the manufacturer's specifications as found in your repair manual. This is critical for safety and proper function.
9. Lower the Vehicle and Test: Lower the vehicle carefully, check for proper operation, and test drive the Suburban. Listen for any unusual noises from the wheel.
Important Considerations:
* Pressing bearings: If you don't have experience using bearing tools, you might want to take the knuckle and new bearings to a professional shop for pressing.
* Hub seals: These are usually replaced when doing wheel bearings.
* ABS Sensors: If your Suburban has anti-lock brakes, be aware of the ABS sensor and wiring; you might need to disconnect it to remove the hub assembly. Handle it with care.
* Rust and Corrosion: On a 1993 vehicle, expect rust and corrosion. Penetrating oil will be your best friend.
Disclaimer: This information is for guidance only. Incorrect installation can result in serious damage or injury. Consult a repair manual specific to your vehicle and consider seeking professional help if you lack the experience or tools for this repair.
