🔧 Wheel Bearing / Hub Assembly - Replacement

Assumption: This procedure covers the front hub bearing assembly on your Explorer. On this vehicle, the bearing is serviced as a complete hub assembly, not as a press-in bearing.

Replacing a worn hub bearing restores quiet operation and helps prevent wheel play, ABS faults, and uneven tire wear. If you hear a growl that changes with speed or feel looseness at the wheel, the hub assembly is the usual fix.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours per side

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⚠️ Safety & Precautions

• Park on level ground and set the parking brake.
• Chock the wheels that stay on the ground.
• Use jack stands; never rely on a jack alone.
• If working near the front, the ABS wheel speed sensor is part of the hub area. Handle the wiring carefully.
• If your vehicle has electronic parking brake functions involved in other repairs, they are not needed for this hub job.
• Battery disconnect is not required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands
• Wheel chocks
• Safety glasses
• Mechanic gloves
• Breaker bar
• Torque wrench
• Ratchet
• 10mm socket
• 13mm socket
• 15mm socket
• 18mm socket
• 21mm socket
• Torx T30 screwdriver
• Bungee cord or wire hanger
• Rubber mallet
• Flat screwdriver
• Trim clip tool
• Hub puller or slide hammer (specialty)
• Penetrating oil
• Wire brush

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front wheel bearing hub assembly - Qty: 1 per side
• New axle nut - Qty: 1 per side
• New hub mounting bolts - Qty: 3 per side
• Brake caliper bracket bolts - Qty: 2 if required by your service procedure
• Dust shield or ABS sensor seal hardware - Qty: 1 if damaged

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📋 Before You Begin

• Loosen the wheel lug nuts before raising the vehicle.
• If the axle nut is staked, straighten the staked area before removal.
• Have the new hub ready before disassembly so the vehicle is not left apart.
• Penetrating oil helps on rusty suspension parts.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Raise and secure the vehicle

• Use the floor jack to raise the front of your Explorer.
• Support it with jack stands under the proper front lift points.
• Remove the wheel with a 21mm socket.

Step 2: Remove the brake caliper and rotor

• Use a 15mm socket or 13mm socket to remove the caliper bolts, depending on caliper hardware.
• Hang the caliper with a bungee cord or wire hanger. Do not let it hang by the hose.
• Use a Torx T30 screwdriver to remove the rotor retaining screw if equipped.
• Remove the rotor. Tap gently with a rubber mallet if stuck.

Step 3: Remove the axle nut

• Use a breaker bar and the correct axle nut socket to remove the axle nut.
• If the nut is staked, make sure the stake is fully unstaked first.
• Keep the axle centered in the hub.

Step 4: Disconnect the hub area attachments

• Use a 10mm socket to remove the ABS wheel speed sensor fastener if needed.
• Unclip the sensor harness from the knuckle with a trim clip tool.
• Move the sensor wiring aside so it cannot be damaged.

Step 5: Free the steering knuckle

• Use a 21mm socket or 18mm socket to separate the lower suspension or tie rod fasteners as needed for access.
• If you need extra room, disconnect the tie rod end from the knuckle using the proper socket and a separator tool.
• Do not strike the axle threads directly.

Step 6: Remove the hub assembly

• Use a 13mm socket or the correct socket set to remove the hub mounting bolts from the back of the knuckle.
• Spray penetrating oil around the hub flange if rusted.
• Use a hub puller or slide hammer to pull the hub assembly out if it is seized.
• Clean the mounting surface with a wire brush.

Step 7: Install the new hub assembly

• Position the new front wheel bearing hub assembly into the knuckle.
• Install the new hub bolts by hand first to avoid cross-threading.
• Tighten the bolts with a ratchet, then finish with a torque wrench.
• Torque to factory specification.

Step 8: Reassemble the brake and axle hardware

• Reinstall the rotor and caliper using the 13mm socket or 15mm socket.
• Install the new axle nut by hand.
• Torque to factory specification.
• If the axle nut is a staked type, stake it after torquing.

Step 9: Reinstall the wheel

• Put the wheel back on and snug the lug nuts with a 21mm socket.
• Lower the vehicle and final-torque the lug nuts with a torque wrench.
• Torque to factory specification.

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✅ After Repair

• Spin the wheel by hand and listen for rubbing or grinding.
• Check for ABS warning lights after start-up.
• Test drive at low speed first, then increase speed gradually.
• Listen for bearing noise changes during turning and braking.
• If the steering wheel pulls or the brake pedal feels odd, recheck the assembly.

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💰 DIY vs Shop Cost

Shop Cost: $450-$900 per side (parts + labor)

DIY Cost: $120-$280 per side (parts only)

You Save: $330-$620 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-4 hours.

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🎯 Ready to get started?

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