Rear Hub Unit Bearing
The content of this article/image reflects the changes Identified inTSB # 18-97-06
as of 01/04/06
and applies to 2005 Legacy and Baja models
Rear Hub Unit Bearing
REMOVAL
1. Disconnect the ground cable from battery.
2. Lift-up the vehicle, and then remove the rear wheels.
3. Unlock the axle nut.
4. While applying the parking brake, remove the axle nut using the socket wrench.
CAUTION: Remove the wheel before loosening the axle nut. Failure to follow this rule may damage the wheel bearings.
5. Release the parking brake.
6. Remove the rear ABS wheel speed sensor.
7. Remove the disc brake caliper from back plate, and suspend it from stabilizer using wire.
8. Remove the disc rotor from hub.
NOTE:
^ Mark the mating surface of hub and disc rotor before removing the disc rotor to avoid confusing when installing.
^ If the disc rotor seizes up within hub, drive the disc rotor out by installing an 8-mm bolt in screw hole on rotor.
9. Remove the four bolts from rear arm.
10. Remove the hub unit bearing.
CAUTION:
^ Be careful not to damage the magnetic encoder.
^ Do not get closer the tool which charged magnetism to magnetic encoder.
NOTE: If it is hard to remove, use STs.
ST1 926470000 AXLE SHAFT PULLER
ST2 927140000 AXLE SHAFT PULLER PLATE
INSTALLATION
1. Aligning the hub unit bearing to the mounting hole of the back plate, install the hub unit assembly and back plate. Tighten the axle nut temporarily.
CAUTION:
^ Be careful not to damage the magnetic encoder.
^ Do not get closer the tool which charged magnetism to magnetic encoder.
2. Tighten the four bolts to the back plate.
Tightening torque: 65 Nm (6.6 kgf-cm, 47.9 ft. lbs.)
3. Remove the axle nut.
4. Draw the rear drive shaft into specified position.
5. Tighten the new axle nut temporarily.
CAUTION: Use a new axle nut (olive color).
6. Install the disc rotor on hub.
7. Install the disc brake caliper on back plate.
Tightening torque: 53 Nm (5.4 kgf-cm, 39.1 ft. lbs.)
8. Install the rear ABS wheel speed sensor and brake cable bracket.
9. Adjust the parking brake lever stroke by turning adjuster.
10. While applying the parking brake and depressing the brake pedal, tighten a new axle nut (olive color) to the specified torque and lock it securely.
Tightening torque: 240 Nm (24.5 kgf-cm, 177 ft. lbs.)
CAUTION:
^ Install the wheel after installation of the axle nut. Failure to follow this rule may damage the wheel bearing.
^ Be sure to tighten the axle nut to specified torque. Do not overtighten it as this may damage wheel bearing.
11. After tightening the axle nut, lock it securely.
12. Install the wheel and tighten the wheel nuts to specified torque.
Tightening torque: 110 Nm (11.2 kgf-cm, 81.1 ft. lbs.)
DISASSEMBLY
Using the ST and a hydraulic press, drive hub bolts out.
ST 28399AG000 HUB STAND
CAUTION:
^ Be careful not to hammer the hub bolts. This may deform the hub.
^ Do not reuse the hub bolt.
NOTE: Since the hub unit bearing can not be disassembled, only hub bolts can be removed.
ASSEMBLY
1. Attach the hub to ST securely.
ST 927080000 HUB STAND
2. Using a press, press the new hub bolts until their seating surfaces contact the hub.
NOTE: Use 12 mm (0.47 inch)dia. holes in HUB STAND to prevent bolts from tilting.
INSPECTION
1. Moving the rear tire up and down by hand, check there is no backlash in bearing, and check the wheel rotates smoothly.
2. Inspect the lean of axis direction using a dial gauge. Replace the hub bearing if the lean range exceed the limitation.
Service limit: Maximum: 0.05 mm (0.0020 inch)