Rear Hub Unit Bearing: Removal

Lift up the vehicle, and then remove the rear wheels.
Remove the nut - axle.
CAUTION: Do not loosen the nut - axle while the rear axle is loaded. Doing so may damage the hub unit COMPL.
1. Lift the crimped section of the nut - axle.
2. Remove the nut - axle using a socket wrench while depressing the brake pedal.
  
  Fig 1: Removing Axle Nut Using Socket Wrench
  Courtesy of SUBARU OF AMERICA, INC.
Remove the rear ABS wheel speed sensor from the rear axle housing.
1. Remove the bolts, and remove the rear ABS wheel speed sensor.
2. Remove the rear ABS wheel speed sensor harness from the upper arm.
  CAUTION:
  - Be careful not to damage the sensor.
  - Do not apply excessive force to the sensor harness.
  Fig 2: Locating Rear ABS Wheel Speed Sensor Harness
  Courtesy of SUBARU OF AMERICA, INC.
Remove the caliper body assembly from the housing assembly - rear axle.
1. Remove the bolts and then remove the brake hose bracket and caliper body assembly.
  
  Fig 3: Locating Brake Hose Bracket Bolts
  Courtesy of SUBARU OF AMERICA, INC.
2. Prepare wiring harnesses etc. to be discarded, and suspend the caliper body assembly from the strut assembly.
  
  Fig 4: Suspending Caliper Body Assembly From Strut Assembly
  Courtesy of SUBARU OF AMERICA, INC.
Remove the rear disc rotor.
NOTE:
If the disc rotor is difficult to remove, proceed as follows.
1. Remove the adjusting hole cover (A) of the rear disc rotor.
2. Turn the adjuster assembly - rear brake using a flat tip screwdriver until the parking brake shoes get further enough away from the rear disc rotor surface.
  
  Fig 5: Turning Adjuster Assembly - Rear Brake Using Flat Tip Screwdriver
  Courtesy of SUBARU OF AMERICA, INC.
3. If the disc rotor is not removed after performing above step, screw in an 8 mm (0.31 in) bolt to the threaded part (A) of the disc rotor, and remove the disc rotor.
  
  Fig 6: Screwing In Bolt To Threaded Part Of Disc Rotor
  Courtesy of SUBARU OF AMERICA, INC.
Remove the bolts from the housing assembly - rear axle, and then remove the hub unit COMPL - rear axle.
CAUTION:
- Be careful not to damage the magnetic encoder.
- Do not get closer the tool which charged magnetism to magnetic encoder.
Fig 7: Identifying Magnetic Encoder And Hub Unit COMPL - Rear Axle
Courtesy of SUBARU OF AMERICA, INC.

Fig 8: Locating Housing ASSY - Rear Axle Bolts
Courtesy of SUBARU OF AMERICA, INC.

NOTE: If it is hard to remove, use the ST.

Preparation tool:

ST1: AXLE SHAFT PULLER (926470000)

ST2: AXLE SHAFT PULLER PLATE (28099PA110)

Fig 9: Removing Axle Shaft Puller (ST1) And Axle Shaft Puller Plate (ST2)

Courtesy of SUBARU OF AMERICA, INC.