However, if you're determined to do it yourself, here's a general overview. This is NOT a complete, step-by-step guide, and you should consult a repair manual specific to your 2002 Ford Excursion for detailed instructions and torque specifications.
Tools You'll Likely Need:
* Wheel Chocks: Essential for safety.
* Jack and Jack Stands: Never work under a vehicle supported only by a jack.
* Lug Wrench: To remove the wheels.
* Socket Set and Wrenches: Various sizes, including metric and possibly SAE.
* Ball Joint Separator: A crucial tool for separating the ball joint from the knuckle. Several types exist, including pickle forks (risky!), ball joint press, and hydraulic press. A press is the best option to avoid damage.
* Impact Wrench (recommended): Makes the job much easier, especially for removing the control arm bolts.
* Torque Wrench: Absolutely necessary for proper tightening of bolts to prevent damage and ensure safety.
* Penetrating Oil (PB Blaster or similar): Soak all bolts beforehand to aid removal.
* Safety Glasses and Gloves: Protect yourself from injury.
* Repair Manual: Specific to your 2002 Ford Excursion. This is crucial!
General Steps (Consult your repair manual for specifics):
1. Safety First: Secure the Excursion with wheel chocks and jack stands. Disconnect the negative battery terminal.
2. Remove the Wheel: Remove the lug nuts and wheel.
3. Disconnect the Sway Bar Link: This will allow for easier movement of the control arm.
4. Disconnect Brake Caliper: May need to be supported to prevent hanging by the brake line.
5. Remove the Control Arm Bolts: These are typically very tight and may require an impact wrench and penetrating oil.
6. Separate the Ball Joint: This is the most challenging part. Use a ball joint separator to carefully separate the ball joint from the steering knuckle. Avoid damaging the knuckle or ball joint.
7. Remove the Upper Ball Joint: Once separated, remove the upper ball joint from the control arm. This may involve pressing it out using a press.
8. Install the New Upper Ball Joint: Install the new ball joint using a press (recommended). Ensure it's properly seated.
9. Reassemble: Reassemble everything in reverse order, carefully tightening all bolts to the correct torque specifications as outlined in your repair manual.
10. Torque Specifications: This is CRITICAL. Using incorrect torque values can lead to component failure and serious safety hazards.
11. Test: After reassembly, carefully test the steering and suspension for proper function before driving.
Important Considerations:
* Alignment: After replacing the ball joints, you must have a wheel alignment performed by a professional.
* Press: Using a press is highly recommended to avoid damaging components during removal and installation. A pickle fork can easily damage the knuckle.
* Parts: Ensure you purchase the correct upper ball joints for your specific Excursion model.
This is a simplified overview. Again, do not attempt this repair unless you have significant mechanical experience and the correct tools. The risks associated with improperly installed ball joints are far too great. A professional mechanic is the safest and often most cost-effective option.
