How to Replace Rear Wheel Hub Assembly 05-09 Subaru Outback
Difficulty: Advanced · About 100 min · Subaru Outback
Replace the rear wheel hub assembly on a 2005–09 Subaru Outback, disconnecting the speed sensor and torquing the axle nut before brake reassembly.
Tools you will need
- Floor jack
- Jack stands
- 19 mm socket
- 32 mm socket
- 10 mm socket
- 14 mm socket
- Bungee cord
- Wire brush
- Torque wrench
Parts and supplies
- Rear hub assembly
- New axle nut, if required
Steps
Raise the vehicle and remove the wheel
Loosen the lug nuts on the ground, raise and support the rear safely, then remove the wheel.
Remove caliper, bracket, and rotor
Remove the caliper slider bolts and support the caliper from the suspension. Remove the pads, bracket, and rotor to expose the hub.
Loosen the axle nut
Release the axle nut's locking feature and loosen the nut while preventing the hub from turning. Remove the wheel again if it was temporarily installed for leverage.
Remove the hub assembly
Disconnect the wheel-speed sensor and remove its wiring fastener. Unbolt the hub from behind the knuckle and work it free without pulling on the sensor lead.
Install and secure the new hub
Clean the knuckle mounting surface and inspect the sensor connector. Seat the replacement hub, install its fasteners, and tighten them to specification; refit and torque the axle nut.
Reassemble the rotor and brakes
Clean the rotor and reinstall it on the hub. Refit the caliper bracket and pads, retract the caliper piston as needed, and tighten brake fasteners to vehicle specification.
Reconnect sensor and wheel
Secure the speed sensor and route its wire clear of moving parts. Reinstall the wheel, torque lug nuts to specification, pump the pedal firm, and test cautiously.
Check your vehicle’s repair manual for exact specifications and fit.