Here's a general outline. This is not a complete, step-by-step guide, and variations may exist depending on your specific Windstar's configuration. Always consult a repair manual specific to your vehicle's year and model for detailed instructions and torque specifications.
Tools You'll Likely Need:
* Jack and jack stands: Absolutely crucial for safety. Never work under a vehicle supported only by a jack.
* Wheel chocks: To prevent the vehicle from rolling.
* Lug wrench: To remove the wheel.
* Socket set and wrenches: Various sizes will be needed.
* Torque wrench: Essential for tightening bolts to the correct specifications.
* Ball joint separator (pickle fork or similar): May be needed to separate the ball joint from the control arm.
* Hammer and punches: Possibly needed for stubborn parts.
* Penetrating oil (PB Blaster, etc.): Helps loosen rusted bolts.
* New rear wheel bearing: Get the correct part number for your vehicle. Don't forget the necessary ABS sensor ring if your Windstar has ABS.
* Repair manual: This is invaluable!
General Steps (Consult your repair manual for precise details):
1. Safety First: Park on a level surface, engage the parking brake, and chock the front wheels. Raise the vehicle using the jack and securely support it with jack stands.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Remove the Brake Caliper: Remove the caliper bolts and carefully hang the caliper out of the way using a wire or bungee cord. Do *not* let the brake line hang freely. Support it.
4. Remove the Rotor: Remove the rotor (brake disc). This might require some persuasion if it's rusted on.
5. Disconnect the Brake Line (ABS Sensor): If applicable, carefully disconnect the ABS sensor wire from the wheel bearing housing. Note its position for reassembly.
6. Disconnect the Suspension Components: This is the most challenging part. You'll likely need to disconnect the lower control arm and possibly other suspension components, depending on your specific Windstar's design. This often involves removing bolts and potentially using a ball joint separator.
7. Remove the Axle Flange Nut: This nut is usually very tight. You might need a breaker bar and impact wrench for this step.
8. Remove the Axle Flange and Bearing: Once the axle nut is removed, the axle flange (with the bearing pressed onto it) should come out. You may need to tap it gently with a hammer (use a suitable soft-faced mallet to avoid damage).
9. Press Out the Old Bearing: This usually requires a hydraulic press or a specialized bearing puller. This is not something easily done at home without the proper tools.
10. Press In the New Bearing: Carefully press the new bearing into place using a press.
11. Reassembly: Reassemble all components in the reverse order of disassembly. Be sure to tighten all bolts to the correct torque specifications as outlined in your repair manual.
12. Bleed the Brakes: After reassembly, you will likely need to bleed the brakes to remove any air that may have entered the system during the repair.
Important Considerations:
* ABS Sensor: Handle the ABS sensor carefully to avoid damaging it.
* Torque Specifications: Using the correct torque for each bolt is critical to prevent damage or premature failure.
* Hub and Axle Condition: Inspect the hub and axle for any signs of wear or damage while you have them out.
* Professional Help: If you're unsure about any step, it's best to seek professional assistance. A poorly performed repair can lead to dangerous consequences.
This is a simplified overview. A detailed repair manual is absolutely essential. Again, if you are uncomfortable with any aspect of this repair, take your vehicle to a qualified mechanic. Your safety is paramount.
