Monday, March 31, 2014
How to Change the Front Wheel Hub in a 1998 Intrigue
The front wheel hub assembly on a 1998 Oldsmobile Intrigue contains both the bearing, hub, and wheel studs. This wheel hub assembly is non-repairable and must be replaced as an entire unit. Symptoms of a faulty hub assembly include a noticeable vibration that increases with vehicle speed, grinding or buzzing when turning, and howling or whining at speeds above 45 miles per hour. The hub assembly is secured to the steering knuckle with three steel bolts. These bolts must be replaced when installing the new hub assembly.
Instructions
Removal
- 1
Apply the parking brake and chock the rear wheels. Remove the hub cap on the affected side by loosening the hub cap locking caps with a 19 mm socket and a ratchet. Break the lug nuts loose with a 19 mm lug nut wrench.
2Raise the vehicle with an automotive jack and support it with two jack stands, one on each side. Check to make sure the vehicle is securely supported before proceeding.
3Remove the lug nuts with a 19 mm lug nut wrench and remove the tire. Have an assistant depress the brake pedal and loosen the axle shaft nut one revolution with a deep-well axle nut socket and a ratchet.
4Place a C-clamp over the brake caliper so one end of the clamps is over the rear side of the caliper and the other end of the clamp is over the outer brake pad. Loosen the caliper bleeder screw with a flare nut wrench, then tighten the C-clamp to compress the caliper piston. Tighten the bleeder screw immediately after compressing the piston.
5Remove the bolts holding the brake caliper bracket to the knuckle and pry the caliper and bracket off of the rotor together. Tie the caliper and bracket assembly to the strut spring with a piece or wire.
6Remove the brake rotor. Place a pry bar in between the wheel studs to hold the hub still, then remove the axle shaft nut. Loosen the three bolts on the back side of the steering knuckle that hold the hub assembly in place with a ratchet and metric socket. Install a two-jaw puller onto the hub flange. Center the puller screw on the end of the axle shaft. Tighten the puller screw to force the splined portion of the axle shaft out of the hub assembly.
7Remove the puller from the hub assembly. Remove the bolts that hold the hub assembly to the steering knuckle and remove the hub assembly from the vehicle.
Installation
- 8
Clean the circular hub assembly mating surface on the steering with a wire brush to remove any excess corrosion. Apply a light coating of grease to the axle splines. Slide the axle into the new hub assembly and rotate it until the three mounting holes align with the holes in the steering knuckle.
9Reinstall three new hub assembly mounting bolts with a ratchet and metric socket. Torque the bolts to 96 foot-pounds with a torque wrench.
10Set the brake rotor into position on the new hub and install two lug nuts to hold it in place. Slide the brake caliper and bracket into position over the rotor and reinstall the brake caliper bracket bolts. Tighten the bracket bolts to 137 foot-pounds using a torque wrench. Have an assistant hold a pry bar in between the axle nut studs to immobilize the hub, and then install a new axle nut on the axle spindle and torque it to 118 foot-pounds. Double-check to make sure that the brake caliper, bracket, hub assembly, and rotor are properly installed before proceeding.
11Reinstall the wheel and tighten the lug nuts using a lug nut wrench. Lift the vehicle off of the jack stands with an automotive jack and set it on the ground. Torque the lug nuts to 100 foot-pounds with a torque wrench and reinstall the hub cap.
12Pump the brakes until the pedal firms up; because the piston was driven back into the caliper bore, you must pump the brakes to move the piston forward into contact with the brake pads before operating the vehicle. Road test the vehicle to ensure that hub assembly and brakes operate properly.
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