Rear Axle: Installation

Temporarily tighten the rear housing to the upper arm.
Aligning with the mounting hole of the rear brake back plate, 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: Front Hub Unit Bearing And Magnetic Encoder
  Courtesy of SUBARU OF AMERICA, INC.
  
  Fig 2: Removing Rear Hub Unit Bearing
  Courtesy of SUBARU OF AMERICA, INC.
Attach the rear drive shaft to the rear hub unit bearing.
Tighten the new axle nut temporarily.
CAUTION: Use new axle nuts.
Attach the links to the rear housing and tighten them to the specified torque.
Tightening torque:

Upper arm

80 N.m (8.16 kgf-m, 59.0 ft-lb)

Front lateral link

60 N.m (6.12 kgf-m, 44.3 ft-lb)

Rear lateral link

120 N.m (12.20 kgf-m, 88.5 ft-lb)

Trailing link

90 N.m (9.18 kgf-m, 66.4 ft-lb)
Tighten the four bolts of the rear housing.
Tightening torque:

65 N.m (6.63 kgf-m, 47.9 ft-lb)

Fig 3: Bolts Of Rear Housing
Courtesy of SUBARU OF AMERICA, INC.
Install the rear disc rotor.
Install the rear disc brake caliper on the rear housing.
Tightening torque:

66 N.m (6.73 kgf-m, 48.7 ft-lb)
Install the brake hose bracket and rear ABS wheel speed sensor.
Tightening torque:

Brake hose bracket

33 N.m (3.36 kgf-m, 24.3 ft-lb)

Rear ABS wheel speed sensor

7.5 N.m (0.76 kgf-m, 5.5 ft-lb)
Install the rear vehicle height sensor, (model with auto headlight beam leveler, left side only)
Tightening torque:

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.
CAUTION:
- Do not apply weight to the rear axle before tightening the axle nut. Doing so may damage the hub bearing.
- Do not overtighten the nuts as this may damage the hub bearing.
Tightening torque:

190 N.m (19.37 kgf-m, 140.1 ft-lb)
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:

100 N.m (10.20 kgf-m, 73.8 ft-lb)
Connect the battery ground terminal.
Inspect the wheel alignment and adjust if necessary. < Ref. to INSPECTION , Wheel Alignment. >
Perform reinitialization of the auto headlight beam leveler system, (model with auto headlight beam leveler) < Ref. to PROCEDURE , Auto Headlight Beam Leveler System. >