Front Hub Unit Bearing: Removal

Disconnect the ground cable from battery.
Lift up the vehicle, and remove the front wheels.
Lift the crimped section of axle nut.

Fig 1: Lifting Crimped Section Of Axle Nut
Courtesy of SUBARU OF AMERICA, INC.
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.
Remove the disc brake caliper from the front housing, and suspend it from strut using a piece of wire.
Remove the disc rotor from the hub.
NOTE: If it is difficult to remove the disc rotor from the hub, drive an 8 mm bolt into the threaded end of rotor, and then remove the rotor.

Fig 2: Identifying Disc Rotor And Hub
Courtesy of SUBARU OF AMERICA, INC.
Remove four bolts from the front housing.

Fig 3: Locating Front Housing Bolts
Courtesy of SUBARU OF AMERICA, INC.
CAUTION:
- Do not get closer the tool which charged magnetism to magnetic encoder.
- Be careful not to damage the magnetic encoder.
  
  Fig 4: Identifying Magnetic Encoder And Front Hub Unit Bearing
  Courtesy of SUBARU OF AMERICA, INC.
Remove the front hub unit bearing. If it is hard to remove, use the ST.
ST1 926470000 AXLE SHAFT PULLER

ST2 28099PA110 AXLE SHAFT PULLER PLATE

Fig 5: Identifying Axle Shaft Puller And Axle Shaft Puller Plate
Courtesy of SUBARU OF AMERICA, INC.