Rear Hub Unit Bearing: Installation

Aligning with the mounting hole of the rear brake back plate, temporarily tighten the rear hub unit bearing to the rear axle 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 Rear Hub Unit Bearing And Magnetic Encoder
Courtesy of SUBARU OF AMERICA, INC.
Tighten the rear hub unit bearing.

Fig 2: Locating Rear Axle Housing Bolts
Courtesy of SUBARU OF AMERICA, INC.

Tightening torque:

65 N.m (6.63 kgf-m, 47.9 ft-lb)
Tighten the new axle nut temporarily.
CAUTION: Use new axle nuts.
Install the rear disc rotor.
Install the disc brake.
Tightening torque:

66 N.m (6.73 kgf-m, 48.7 ft-lb)
While pressing the brake pedal, tighten the new axle nuts to the specified torque.
CAUTION: Do not load the rear axle before tightening the axle nut. Doing so may damage the hub bearing.

Tightening torque:

240 N.m (24.47 kgf-m, 177 ft-lb)
Inspect the lean of axis direction using a dial gauge. Replace the bearing if the load range exceeds the limitation.

Fig 3: Inspecting Lean Of Axis Direction Using Dial Gauge
Courtesy of SUBARU OF AMERICA, INC.

Service limit:

Maximum: 0.05 mm (0.0020 in)
After tightening the axle nut, lock it securely.

Fig 4: Locating Axle Nut
Courtesy of SUBARU OF AMERICA, INC.
Install the rear wheels.
Tightening torque:

120 N.m (12.24 kgf-m, 88.5 ft-lb)
Moving the rear tire up and down by hand, check there is no backlash in bearing, and check the wheel rotates smoothly.
CAUTION: If there is any fault in the bearing, replace hub unit bearing.

Fig 5: Moving Rear Tire Up And Down
Courtesy of SUBARU OF AMERICA, INC.