Impreza GT F4-2.5L Turbo (2009)
Tightening torque:
220 N-m (22.4 kgf-m, 162.3 ft-lb)
CAUTION:
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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.
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Do not overtighten the nuts as this may damage the axle bearing.
7) After tightening the axle nut, lock it securely.
8) Install the wheel.
Tightening torque:
100 N-m (10.2 kgf-m, 73.8 ft-lb)
Removal
Rear Hub Unit Bearing
REMOVAL
1) Disconnect the ground cable from the battery.
2) Lift up the vehicle, and then remove the rear wheels.
3) Lift the crimped section of axle nut.
4) Remove the axle nut using a socket wrench while depressing the brake pedal.
CAUTION:
Remove the wheel before loosening the axle nut. Failure to follow this rule may damage the wheel bearings.
5) Remove the disc brake caliper from the rear housing, and suspend it from the vehicle using a string. (Disc brake model)