Here's a general outline of the process. This is not a comprehensive guide and may vary slightly depending on the year and model of your Focus. Always consult your vehicle's repair manual for specific instructions and torque specifications.
Tools You'll Need:
* Jack and jack stands: Essential for safely lifting the vehicle. Never work under a vehicle supported only by a jack.
* Lug wrench: To remove the wheel.
* Wheel chocks: To secure the other wheels.
* Socket set and ratchet: You'll need sockets to fit the wheel nuts and potentially the hub nut (if applicable).
* Hammer: For driving out the old stud and possibly driving in the new one.
* Punch: A suitable sized punch to help remove the old stud. A drift punch is ideal.
* New wheel stud: Make sure you get the correct replacement part for your specific Focus model and year.
* Penetrating lubricant (like PB Blaster): To help loosen any stubborn nuts or studs.
* Torque wrench: Crucial for tightening the hub nut and wheel nuts to the manufacturer's specified torque.
* Safety glasses: Protect your eyes from flying debris.
* Gloves: Protect your hands.
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the wheels opposite the one you're working on. Raise the vehicle using the jack and securely support it with jack stands.
2. Remove the Wheel: Remove the wheel nuts and carefully remove the wheel.
3. Access the Wheel Stud: You may need to remove the brake caliper (some models might require just moving it out of the way, check your manual) to fully access the wheel studs. If you need to remove the caliper, carefully support it with wire or a bungee cord to prevent damage to the brake line. Always refer to your repair manual for caliper removal instructions.
4. Remove the Old Stud: Apply penetrating lubricant to the old stud. Using a suitable sized punch and hammer, carefully drive out the old stud from the back of the hub. Work gently to avoid damaging the hub.
5. Install the New Stud: Lubricate the new stud slightly with grease. Carefully install the new stud into the hub, making sure it's fully seated and flush with the hub face. Use a hammer and punch if needed, but be gentle to avoid damaging the stud or hub.
6. Reinstall the Wheel: Carefully install the caliper (if removed), making sure the brake pads are properly seated. Reinstall the wheel, ensuring it's correctly aligned. Tighten the wheel nuts finger-tight.
7. Torque the Wheel Nuts: Lower the vehicle slightly, then use your torque wrench to tighten the wheel nuts to the manufacturer's specified torque. This is critical for wheel safety. Consult your owner's manual for the correct torque specification.
8. Lower the Vehicle: Lower the vehicle completely and fully tighten the lug nuts again.
9. Final Check: After driving a short distance, recheck the wheel nuts to ensure they remain tight.
Important Considerations:
* Hub Nut: Some Ford Focus models require removing a hub nut before accessing the wheel studs. If this is the case, you'll need to note the torque specification for the hub nut and tighten it correctly after replacing the stud.
* Brake Caliper: Be extremely careful when working around the brake caliper. Do not damage the brake lines or pistons.
* Torque Specifications: Using the correct torque is absolutely crucial. Under-tightening can lead to wheel loosening, while over-tightening can damage the studs or threads.
This is a general guide. Consult your vehicle's repair manual for specific instructions and torque specifications for your year and model of Ford Focus. If you are not comfortable performing this repair, take your vehicle to a qualified mechanic. A faulty wheel stud can lead to serious accidents.
