Rear Hub Unit Bearing: Installation

1. 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: Identifying Magnetic Encoder And Rear Hub Unit Bearing

   Courtesy of SUBARU OF AMERICA, INC.
2. Tighten the four bolts of the rear housing.

   Tightening torque: 

   65 N.m (6.6 kgf-m, 47.9 ft-lb) 

   Fig 2: Identifying Rear Housing Bolts

   Courtesy of SUBARU OF AMERICA, INC.
3. Tighten the new axle nut temporarily.
   CAUTION: Use new axle nuts.
4. Install the rear disc rotor.
5. Install the disc brake caliper to the rear housing.

   Tightening torque: 

   66 N.m (6.7 kgf-m, 48.7 ft-lb) 

6. While pressing the brake pedal, tighten the new axle nuts to the specified torque.

   Tightening torque: 

   190 N.m (19.4 kgf-m, 140 ft-lb) 

   CAUTION:

   • Do not install wheel and let it touch the ground before tightening the axle nut. Failure to follow this rule may damage the axle bearing.
   • Do not overtighten the nuts as this may damage the axle bearing.
7. After tightening the axle nut, lock it securely.
   Fig 3: Locking Axle Nut

   Courtesy of SUBARU OF AMERICA, INC.
8. Install the rear wheels.

Tightening torque: 

100 N.m (10.2 kgf-m, 73.8 ft-lb)