Tools You'll Need:
* Brake fluid: Use DOT 3 brake fluid, the type specified for your Explorer. Never mix different types of brake fluid.
* Bleeding wrench: A 8 or 10 mm open-end wrench (check your specific Explorer) or a brake bleeder wrench for a better grip.
* Clear tubing: About 3-4 feet long, to go from the bleeder valve to a container.
* Container: A jar or bottle to catch the old brake fluid.
* Socket wrench(es): For accessing the bleeder valve on each caliper. You might need multiple sizes.
* Jack and jack stands: Essential for safety. Never work under a vehicle supported only by a jack.
* Wheel chocks: To secure the vehicle.
* Shop rags or paper towels: For cleanup.
Procedure:
1. Prepare the Vehicle: Park the Explorer on a level surface, engage the parking brake firmly, and chock the rear wheels. Jack up the front of the vehicle and securely support it on jack stands. Remove the front wheels.
2. Locate Bleeder Valves: The bleeder valves are located on the top of each brake caliper. They are usually small, typically with a hex head.
3. Prepare Your Assistant: Have your assistant ready to pump the brake pedal. They should understand to pump slowly and firmly, not to slam the pedal.
4. Bleeding Sequence: The standard bleeding sequence is: Rear Passenger, Rear Driver, Front Passenger, Front Driver. This ensures consistent pressure and prevents air from being trapped. Some mechanics prefer starting from the furthest point from the master cylinder (rear passenger, in this case).
5. Bleeding Process (Repeat for Each Wheel):
* Attach the tubing: Attach one end of the clear tubing to the bleeder valve. The other end should be submerged in the container of brake fluid.
* Open the bleeder valve: Using the wrench, slightly crack open the bleeder valve.
* Pump the brake pedal: Have your assistant firmly but slowly pump the brake pedal several times.
* Close the bleeder valve: While your assistant holds the pedal down, tighten the bleeder valve.
* Release the pedal: Let your assistant release the brake pedal slowly.
* Repeat: Repeat steps 5-7 until no more air bubbles are visible in the tubing and the fluid coming out is clear. You may need 10-20 pumps per wheel.
* Top off the master cylinder: Make sure the master cylinder reservoir is kept full of brake fluid during this entire process. This prevents air from entering the system.
6. Repeat for Remaining Wheels: Follow steps 5 for each wheel, following the correct bleeding sequence.
7. Test the Brakes: Once all wheels are bled, lower the vehicle carefully, replace the wheels, and gently test the brakes several times. If the brakes feel spongy or soft, you may need to repeat the bleeding process. If there's still a problem, you might have a more serious issue that requires professional attention.
8. Final Check: After testing, carefully inspect brake lines for leaks. Check the brake fluid level in the master cylinder reservoir and top off if needed.
Important Considerations:
* Brake fluid is corrosive: Clean up any spills immediately.
* Air in the system: If you encounter persistent air bubbles, you may have a problem with a faulty component in the brake system.
* Professional help: If you are unsure about any part of this process, take your vehicle to a qualified mechanic. Incorrectly bled brakes are dangerous.
This process provides a general guideline. Consult your 1997 Ford Explorer's repair manual for specific details and torque specifications. Improper bleeding can lead to brake failure, so proceed with caution.
