Impreza WRX STI F4-2.5L DOHC Turbo (2007)
Wheel Bearing: Service and Repair
Front Hub Unit Bearing
REMOVAL
1) Disconnect the ground cable from battery.
2) Lift-up the vehicle and remove the front wheels.
3) Unlock the axle nut.
4) Remove the axle nut using a socket wrench while depressing the brake pedal.
CAUTION:
Remove the wheel before loosening the axle nut. Failure to follow this rule may damage the wheel bearings.
5) Remove the disc brake caliper from housing, and suspend it from strut using a wire.
6) Remove the disc rotor from hub.
NOTE:
If the disc rotor seizes up within hub, drive disc rotor out by installing an 8-mm bolt in screw hole on rotor.
7) Remove the ABS wheel speed sensor assembly and harness.
8) Remove four bolts from housing.
