Rear Axle: Installation

Temporarily tighten the rear housing to the upper arm.
Align the hole of rear brake back plate, and temporarily tighten the rear hub unit bearing to the rear housing.
CAUTION:
- Be careful not to damage the magnetic encoder.
- Do not get closer the tool which charged magnetism to magnetic encoder.
  
  Fig 1: Identifying Magnetic Encoder And Front Hub Unit Bearing
  Courtesy of SUBARU OF AMERICA, INC.
  
  Fig 2: Removing Rear Hub Unit Bearing
  Courtesy of SUBARU OF AMERICA, INC.
Install the rear drive shaft to the rear hub unit bearing.
Tighten the new axle nut temporarily.
CAUTION: Use a new axle nut.
Attach the links to the rear housing and tighten them to the specified torque.
Tightening torque:

Upper arm 80 N.m (8.2 kgf-m, 59 ft-lb)

Front lateral link 60 N.m (6.1 kgf-m, 44.3 ft-lb)

Rear lateral link 80 N.m (8.2 kgf-m, 59 ft-lb)

Trailing link 80 N.m (8.2 kgf-m, 59 ft-lb)
Tighten the rear hub unit bearing.
Tightening torque: 65 N.m (6.6 kgf-m, 47.9 ft-lb)

Fig 3: Identifying Rear Housing Bolts
Courtesy of SUBARU OF AMERICA, INC.
Install the rear disc rotor.
Install the rear disc brake.
Tightening torque: 66 N.m (6.7 kgf-m, 48.7 ft-lb)
Install the brake hose bracket and the rear ABS wheel speed sensor.
Tightening torque:

Frame hose bracket 33 N.m (3.4 kgf-m, 24.3 ft-lb)

Rear ABS wheel speed sensor 7.5 N.m (0.76 kgf-m, 5.5 ft-lb)
While pressing the brake pedal, tighten the new axle nuts to the specified torque.
Tightening torque: 240 N.m (24.5 kgf-m, 177 ft-lb)

CAUTION: Do not load the rear axle before tightening the axle nut. Doing so may damage the hub bearing.
After tightening the axle nut, lock it securely.

Fig 4: Locking Axle Nut
Courtesy of SUBARU OF AMERICA, INC.
Install the rear wheels.
Tightening torque: 120 N.m (12.2 kgf-m, 88.5 ft-lb)
Inspect the wheel alignment and adjust if necessary.