advice on replacing the front wheel bearing on a 1999 saturn sc2.

Car: Saturn, SC2, 1999 - Back to Fix-It

Q.advice on replacing the front wheel bearing on a 1999 saturn sc2.

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More Info required Are you asking on how to do it or how to diagnose it?

Addition both would be good.

Answer The easy way is to listen while driving. If you hear aa rumbleing type of noise from the front end, isolate which side. Raise & support vehicle, place in neutral, then spin the tires. Listen & feel for noise.

Once you have deturmined which on is bad, you will need some special tools.

Remove steering knuckle/hub assembly from vehicle.
Remove ABS wheel speed sensor from knuckle. NOTICE: If the hub or bearing is removed from the knuckle, a new bearing must be used during assembly.
Assemble the wheel bearing/hub removal tool SA9159S (or equivalent) with part numbers:
1 - hub driver
2 - hub driver screw
3 - bridge retainer
4 - bridge
Secure the entire setup in a vice (by the bridge) as shown in illustration.
While holding the hub driver with a wrench, tighten the hub driver screw to extract the hub.
If the inner race of bearing is pulled out with the hub in previous step, remove the race from the hub using part numbers:
8 - Inner race puller
9 - Two bridge retainer plates
10 - Two bolts
11 - Two flat washers
Inspect hub at bearing location for pitting, scoring, wear, or corrosion. Replace if necessary.

Remove steering knuckle from vice.
Remove bridge retainer and bridge.
Remove bearing retainer snap ring.
Place knuckle/bearing assembly in a shop press as shown in illustration, using part numbers:
5-knuckle support tube
7 - small driver
Press out bearing. Inspect bore of knuckle for pitting, scoring wear, or corrosion. If damage cannot be easily cleaned up with light sanding, replace the knuckle.
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Using large driver (part number 6), press in new bearing, as shown in illustration, until seated. IMPORTANT: When performing this operation, the small driver (part number 7) must be used to support the bearing inner race with its small (pilot) side facing towards the press, away from bearing.

Press in hub as shown in illustration, using part numbers:
5-knuckle support tube
7 - small driver

Install bearing retainer snap ring.
Install ABS wheel speed sensor into knuckle with fastener. Torque: 8 Nm (72 inch lbs.)
INSTALLATION

Position steering knuckle onto axle shaft and install axle to hub washer and a new nut. IMPORTANT: Do not tighten fastener at this time.
Install the ball joint stud through the knuckle attachment point and install castle nut. IMPORTANT: Do not tighten fastener at this time.
Attach steering knuckle-to-strut with fasteners. IMPORTANT: Tie rod end threads must be thoroughly cleaned and lubricated before tightening nut. Lubricate only the threaded part of the stud. Do not lubricate the smooth tapered portion of the stud.

A. If equipped with a cotterpin and castle nut, attach tie rod end-to-steering knuckle with castle nut.
Torque: 45 Nm (33 ft. Lbs.)
IMPORTANT: If it is necessary to rotate the castle nut after tightening to align it with the hole in the stud, always tighten the nut to align it; never loosen it. Install new cotter pin.

If equipped with a torque prevailing (self-locking) nut, attach tie rod-to-steering knuckle with a NEW nut. Prevent tie rod ball stud from turning while tightening torque prevailing nut. Torque: 55 Nm (41 ft. Lbs.) IMPORTANT: Lower control arm ball stud threads must be thoroughly cleaned and lubricated before installing and tightening nut.
Tighten ball joint stud castle nut. Torque: 75 Nm (55 ft. Lbs.) IMPORTANT: If it is necessary to rotate the castle nut after tightening to align it with the hole in the stud, always tighten the nut to align it; never loosen it. Install new cotter pint
IMPORTANT: With fasteners installed but not tightened, push bottom of strut inward while tightening fasteners.
IMPORTANT: Lower control arm ball stud threads must be thoroughly cleaned and lubricated prior to tightening nut.
Tighten steering knuckle-to-strut fasteners. Torque: 170 Nm (126 ft. Lbs.) IMPORTANT: If it is necessary to rotate the castle nut after tightening to orient it to the hole in the stud, always tighten the nut to align it; never loosen it.
Tighten ball joint stud castle nut. Torque: 75 Nm (55 ft. Lbs.)
Install new cotter pin.

Install rotor onto wheel hub.
Install caliper mount bracket onto knuckle. Torque: 110 Nm (81 ft. Lbs.)
If equipped with ABS, install electrical connector to ABS wheel speed sensor.
Depress brake pedal and tighten axle to hub nut. Torque: 200 Nm (148 ft. Lbs.) NOTICE: Before installing wheels, remove rust or corrosion from wheel mounting surfaces and brake rotors/drums. Failure to do so can cause wheel nuts to loosen in service.
Position wheel onto hub.
Install wheel nuts and tighten in a crisscross pattern. Repeat tightening pattern to make sure torque is correct. Torque: 140 Nm (103 ft. Lbs.)
Lower vehicle from hoist.
Perform vehicle wheel alignment. Refer to ALIGNMENT in WHEELS, TIRES AND ALIGNMENT.

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advice on replacing the front wheel bearing on a 1999 saturn sc2.