Here's a general outline. This is not a substitute for a proper repair manual specific to your truck's year and model. Consult a repair manual (Haynes, Chilton, or a Ford factory service manual) for detailed instructions, torque specifications, and diagrams. Torque specifications are extremely important to avoid premature bearing failure.
Tools You'll Likely Need:
* Jack and jack stands: Absolutely essential for safety. Never work under a vehicle supported only by a jack.
* Lug wrench: To remove the wheel.
* Wheel chocks: To prevent the truck from rolling.
* Socket set and wrenches: Various sizes will be needed, likely including metric and standard.
* Hammer and punch: For removing and installing components.
* Bearing packing tool: To properly pack the new bearings with grease. This is crucial.
* Torque wrench: Essential for proper tightening of bolts and nuts. Improper torque can ruin the bearings.
* Pry bar: May be helpful for separating parts.
* Penetrating oil (PB Blaster, etc.): To help loosen rusted or seized bolts.
* Clean rags and shop towels: To keep everything clean.
* New wheel bearings and seals: Get the correct parts for your specific axle.
* Grease: Use the correct type of grease specified for your bearings.
General Steps (Consult your repair manual for precise details):
1. Safety First: Secure the truck on jack stands. Chock the wheels. Disconnect the negative battery terminal.
2. Remove the Wheel and Tire: Remove the lug nuts and take off the wheel.
3. Remove the Brake Caliper: Support the caliper with a wire or bungee cord to prevent it from hanging by the brake line. Remove the caliper mounting bolts.
4. Remove the Rotor (or Drum, if drum brakes): Remove the rotor or drum. You may need to use a slide hammer or other tools to remove a stubborn rotor.
5. Remove the Hub Assembly: This often involves removing cotter pins, nuts, and potentially other components depending on your truck's configuration. The hub assembly will likely be held on by large nuts. You'll need to remove these, likely using an impact wrench for ease.
6. Remove the Old Bearings and Seals: This is where a repair manual is vital. The process can vary depending on your specific axle design. You'll probably need to use a bearing puller to remove the bearings. Be careful not to damage the axle.
7. Clean the Hub and Axle: Thoroughly clean the hub and axle to remove any debris or old grease.
8. Pack the New Bearings with Grease: Use a bearing packing tool to properly pack the new bearings with grease. Insufficient grease will lead to premature bearing failure.
9. Install the New Bearings and Seals: Install the new bearings and seals, following the instructions in your repair manual carefully. The order and installation method are critical.
10. Reassemble the Hub Assembly: Reinstall all the components you removed in reverse order, tightening everything to the correct torque specifications. Again, the repair manual is essential here.
11. Reinstall the Rotor/Drum, Caliper, and Wheel: Reinstall the rotor or drum, caliper, and wheel. Torque the lug nuts properly.
12. Lower the Truck and Test Drive: Carefully lower the truck from the jack stands. Test drive the truck at various speeds to ensure the bearings are working correctly. Listen for any unusual noises.
Important Considerations:
* Axle type: The specific procedures will vary slightly depending on whether you have a Dana 35, Dana 44, or another type of axle.
* 4x4 system: Disconnecting the 4x4 system might be necessary, depending on the specific design. Refer to your repair manual for guidance.
* Parts: Order the correct parts for your specific truck. Getting the wrong parts will waste your time and potentially damage your truck.
This is a complex repair. If you are not comfortable working on your vehicle, take it to a qualified mechanic. Improperly installed wheel bearings can lead to serious accidents. The safety of yourself and others should be your top priority.
