🔧 Wrangler - Front Wheel Bearing Hub Replacement

The front wheel bearing on your Wrangler is serviced as a complete hub and bearing assembly. Replacing it restores smooth wheel rotation and can fix growling noise, vibration, ABS warnings, or looseness at the wheel.

Difficulty Level: Intermediate | Estimated Time: 2-3 hours per side

Assumption: This procedure covers the front hub and bearing assembly on your Wrangler’s solid front axle.

---

⚠️ Safety & Precautions

• ⚠️ Support your Wrangler with jack stands under the axle. Never work under a vehicle supported only by a jack.
• ⚠️ Wear safety glasses and gloves. Rust and brake dust can fall during removal.
• ⚠️ Do not let the brake caliper hang by the brake hose. Support it with wire or a bungee cord.
• ⚠️ Avoid pulling or twisting the ABS wheel speed sensor wire.
• ⚠️ The axle nut is very tight. Use a proper breaker bar and keep your body balanced.
• ⚠️ If the hub is stuck from rust, use penetrating oil and patience. Do not damage the steering knuckle.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Safety glasses
• Mechanic gloves
• 19mm lug nut socket
• 13mm 12-point socket
• 21mm socket
• 36mm axle nut socket
• 1/2-inch drive breaker bar
• 1/2-inch drive ratchet
• 3/8-inch drive ratchet
• Torque wrench (10-150 ft-lbs)
• Torque wrench (50-250 ft-lbs)
• Flat blade screwdriver
• Needle-nose pliers
• Dead blow hammer
• Brass punch
• Wire brush
• Bungee cord
• Brake cleaner spray

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front wheel bearing hub assembly - Qty: 1 per side
• Axle nut - Qty: 1 per side
• Brake cleaner - Qty: 1 can
• Penetrating oil - Qty: 1 can
• Anti-seize compound - Qty: 1 tube

---

📋 Before You Begin

• 🅿️ Park your Wrangler on level ground, shift into 1st gear, and set the parking brake.
• 🛞 Place wheel chocks behind the rear tires.
• 🔓 Before raising the vehicle, slightly loosen the front lug nuts and axle nut while the tire is still on the ground.
• 🧰 A 12-point socket has 12 internal points and is required for the factory hub bolts on this Wrangler.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the Lug Nuts and Axle Nut

• Use a 19mm lug nut socket and 1/2-inch drive breaker bar to loosen the front wheel lug nuts about half a turn.
• Use a 36mm axle nut socket and 1/2-inch drive breaker bar to loosen the axle nut while the tire is still on the ground.
• Do not fully remove the lug nuts or axle nut yet.
• Ground contact keeps the hub from spinning.

Step 2: Raise and Support the Front Axle

• Use a floor jack (rated 3-ton minimum) under the front axle tube near the side being repaired.
• Raise your Wrangler until the tire is off the ground.
• Place jack stands (rated 3-ton minimum) under the front axle tube.
• Lower the axle onto the jack stands and gently shake the vehicle to confirm it is stable.

Step 3: Remove the Wheel

• Use a 19mm lug nut socket and 1/2-inch drive ratchet to remove the lug nuts.
• Remove the wheel and place it flat under the frame as an extra safety backup.

Step 4: Remove the Brake Caliper

• Use a 21mm socket and 1/2-inch drive ratchet to remove the two brake caliper bracket bolts.
• Lift the caliper and bracket assembly off the brake rotor.
• Use a bungee cord to hang the caliper from the spring or frame.
• Do not let the caliper hang by the rubber brake hose.

Step 5: Remove the Brake Rotor

• Slide the brake rotor straight off the wheel studs by hand.
• If it is stuck, spray the hub area with brake cleaner spray first, then tap the rotor hat with a dead blow hammer.
• A dead blow hammer is a soft-faced hammer that reduces bounce and helps avoid damage.

Step 6: Remove the Axle Nut

• Use a 36mm axle nut socket and 1/2-inch drive ratchet to fully remove the axle nut.
• If the axle shaft is stuck in the hub splines, thread the old nut back on a few turns.
• Use a brass punch and dead blow hammer to lightly tap the axle inward.
• A brass punch is a soft metal drift that helps move parts without damaging steel threads.

Step 7: Disconnect the ABS Wheel Speed Sensor Wire

• Follow the sensor wire from the hub toward the frame by hand.
• Use a flat blade screwdriver to gently open the plastic retaining clips.
• Disconnect the ABS connector by pressing the lock tab and pulling the connector apart.
• Use needle-nose pliers only if a clip is stuck. Do not crush the connector.

Step 8: Remove the Hub Bearing Bolts

• From the back side of the steering knuckle, use a 13mm 12-point socket and 3/8-inch drive ratchet to remove the three hub bearing bolts.
• If the bolts are tight or rusty, use the 1/2-inch drive breaker bar with the 13mm 12-point socket.
• Keep the bolts organized. Inspect them for heavy rust or stretched threads.

Step 9: Remove the Old Hub Assembly

• Pull the hub assembly straight outward by hand while guiding the axle shaft through the center.
• If the hub is stuck, apply penetrating oil around the hub-to-knuckle seam.
• Use a dead blow hammer to tap around the hub flange evenly.
• Do not pry hard against the steering knuckle sealing surface.
• Work slowly around the hub in a circle.

Step 10: Clean the Mounting Surface

• Use a wire brush to clean rust and debris from the steering knuckle where the hub sits.
• Spray the area with brake cleaner spray and wipe it clean.
• Apply a very thin layer of anti-seize compound by hand to the knuckle bore.
• Do not get anti-seize on the brake rotor or wheel studs.

Step 11: Install the New Hub Assembly

• Guide the axle shaft through the center of the new hub by hand.
• Seat the hub squarely into the steering knuckle.
• Start all three hub bolts by hand first.
• Use a 13mm 12-point socket and 3/8-inch drive ratchet to snug the bolts evenly.
• Use a torque wrench (10-150 ft-lbs) and 13mm 12-point socket to tighten the hub bolts to Torque to 102 Nm (75 ft-lbs).

Step 12: Reconnect the ABS Sensor Wire

• Route the new ABS wire exactly like the old one.
• Use your hands to snap the wire into the factory retaining clips.
• Connect the ABS connector until it clicks.
• Use a flat blade screwdriver only to help seat stubborn clips gently.
• Make sure the wire cannot touch the tire, axle shaft, or brake rotor.

Step 13: Install the New Axle Nut

• Thread the new axle nut on by hand first.
• Use a 36mm axle nut socket and 1/2-inch drive ratchet to snug the axle nut.
• Final torque will be done after the wheel is installed and the tire is on the ground.

Step 14: Reinstall the Brake Rotor

• Clean both sides of the rotor hat with brake cleaner spray.
• Slide the rotor onto the wheel studs by hand.
• If needed, hold it in place with one lug nut installed finger-tight.

Step 15: Reinstall the Brake Caliper

• Remove the bungee cord and lower the caliper bracket assembly over the rotor.
• Start both caliper bracket bolts by hand.
• Use a 21mm socket and torque wrench (10-150 ft-lbs) to tighten the caliper bracket bolts to Torque to 169 Nm (125 ft-lbs).

Step 16: Reinstall the Wheel

• Install the wheel by hand onto the studs.
• Start all lug nuts by hand.
• Use a 19mm lug nut socket and 1/2-inch drive ratchet to snug the lug nuts in a star pattern.

Step 17: Lower the Wrangler and Torque the Fasteners

• Use the floor jack (rated 3-ton minimum) to raise the axle slightly.
• Remove the jack stands (rated 3-ton minimum).
• Lower your Wrangler until the tire touches the ground and cannot spin.
• Use a torque wrench (50-250 ft-lbs) and 36mm axle nut socket to tighten the axle nut to Torque to 237 Nm (175 ft-lbs).
• Use a torque wrench (10-150 ft-lbs) and 19mm lug nut socket to tighten the lug nuts in a star pattern to Torque to 130 Nm (95 ft-lbs).

Step 18: Final Visual Check

• Use a flashlight if available to check that the ABS wire is clipped in and clear of moving parts.
• Use your hands to confirm the brake hose is not twisted.
• Spin the tire by hand before fully lowering if possible. It should turn smoothly without grinding.

---

✅ After Repair

• ✅ Pump the brake pedal several times before driving. The pedal should feel firm.
• ✅ Start with a slow test drive under 25 mph and listen for grinding, clicking, or rubbing.
• ✅ Watch for ABS or traction control lights on the dash.
• ✅ Recheck lug nut torque after 25-50 miles.
• ✅ If there is still growling noise, check the opposite front hub and the rear axle bearings.

---

💰 DIY vs Shop Cost

Shop Cost: $350-$650 per side (parts + labor)

DIY Cost: $90-$220 per side (parts only)

You Save: $260-$430 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.5-2.5 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.