Rear Hub Unit Bearing: Installation

WARNING: This page is about a different car, the 2012 Subaru Outback and 2012 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

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
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Tighten the rear hub unit bearing.

Fig 2: Locating Rear Axle Housing Bolts
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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
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Service limit:

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

Fig 4: Locating Axle Nut
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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.