To change the rotor, you'll need to:
1. Safely secure the vehicle: Use a parking brake and wheel chocks. Jack up the truck and securely support it on jack stands. Never work under a vehicle supported only by a jack.
2. Remove the wheel: Unscrew the lug nuts and remove the wheel.
3. Remove the caliper: Use a caliper bracket removal tool or a C-clamp to compress the caliper piston. This allows you to remove the caliper from the rotor. Carefully support the caliper; don't let the brake line hang. You may need to tie it up out of the way.
4. Remove the rotor: The rotor may be held on by a single bolt or may just slide off. Some rotors have a retaining clip that you may have to carefully pry off. If it's stubborn, use a rubber mallet to tap it gently, but be careful not to damage the mounting surface on the hub.
5. Install the new rotor: Carefully install the new rotor, making sure it's seated correctly. If there's a retaining clip, reinstall it.
6. Reinstall the caliper: Reinstall the caliper and bracket.
7. Reinstall the wheel: Torque the lug nuts to the manufacturer's specifications (found in your owner's manual).
8. Lower the vehicle: Lower the vehicle carefully.
If you're having trouble removing the rotor, there may be corrosion or rust binding it to the hub. Penetrating oil applied beforehand can help. If it's truly stuck, it's better to seek professional help from a mechanic rather than risk damaging other components.
Removing the wheel bearing is a much more complex procedure that involves removing the hub assembly, usually requiring specialized tools and a good understanding of automotive mechanics. It is NOT necessary to change a brake rotor. If you need to replace the wheel bearing, it's best to have a qualified mechanic perform this task.
