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How to Replace a Hub Assembly on a Jeep Wrangler

Replacing the hub assembly on your Jeep Wrangler, while time consuming, can save you a substantial amount of money. The hub assembly on the front of your Jeep Wrangler supports the brakes, the front drive axle and the bearing assembly. It is not serviceable except as a complete unit but replacement hub assemblies are readily available from most auto parts stores and through the Jeep dealer network.

Instructions

1

Locate the spindle nut in the center of the wheel before removing the wheel from the Jeep. Remove the cotter pin from the from the end of the axle shaft with a pair of pliers and then loosen the spindle nut with a breaker bar and a spindle nut socket.

2

Loosen the lug nuts on the wheel with a lug wrench while there is still weight on it but do not remove them from the wheel studs. Raise the front of the Jeep with a jack until the tire is off the ground, then insert a set of jack stands under the axle tube to support the truck.

3

Remove the lug nuts from the wheel studs, then remove the tires and set them aside. Locate the two slide pins that support the brake caliper on the back of the caliper. Remove both pins with a socket and ratchet and then lift the caliper off the brake rotor and mounting bracket. Support the caliper from the upper suspension with a wire so it does not damage the rubber brake line.

4

Slide the brake rotor off the hub and set it aside. Locate the three 12-point bolts on the back side of the steering knuckle that retain the hub to the knuckle. Remove them with a 12-point socket, ratchet and extension, then set the bolts aside.

5

Pull the hub assembly straight out of the steering knuckle, carefully sliding it off the axle shaft, and then discard the old hub assembly. Clean the inside of the steering knuckle with a wire brush to remove any rust or corrosion from the knuckle, then coat the inside with anti-seize compound.

6

Slide the new hub assembly over the axle shaft and into the steering knuckle. Push it in until it seats completely, then install the 12-point retaining bolts into the hub from the rear of the steering knuckle. Torque the retaining bolts to 75 lbs.-ft. with a torque wrench.

7

Install the brake rotor over the wheel studs and hub assembly, then position the break caliper over the rotor, aligning the hole for the slide pins with the holes in the mounting bracket. Install the slide pins and torque them to 36 lbs.-ft. with a torque wrench and socket.

8

Position the wheel over the wheel studs and thread the lug nuts on until they are snug. Thread the spindle nut onto the axle shaft end and tighten until it is snug.

9

Raise the Jeep off the jack stands with a jack, remove the stands, and set the Jeep on the ground. Tighten the lug nuts with a lug wrench and then torque the spindle nut to 175 ft.-lbs. Install a new cotter pin in the axle shaft and bend the ends over with a pair of pliers to secure it.