Subaru Outback manuals

Subaru Outback: Front Hub Unit Bearing

A: REMOVAL

1) Lift up the vehicle, and then remove the front wheels.

2) Remove the axle nut.

CAUTION: Do not loosen the axle nut while the front axle is loaded. Doing so may damage the hub bearing.

  1. Lift the crimped section of axle nut.
  2. Remove the axle nut using a socket wrench while depressing the brake pedal.

Subaru Outback. Drive Shaft System

3) Remove the front ABS wheel speed sensor.

Subaru Outback. Drive Shaft System

4) Remove the front disc brake caliper from the front axle housing.

  1. Remove the mounting bolts, and then remove the front disc brake caliper.
  2. Prepare wiring harnesses etc. to be discarded, and suspend the front disc brake caliper from the shock absorber with the harnesses.

Subaru Outback. Drive Shaft System

5) Remove the disc rotor.

NOTE: When the disc rotor is difficult to be removed from the front hub unit bearing, screw in 8 mm (0.31 in) bolt to the threaded part of the disc rotor (A), and remove the disc rotor.

Subaru Outback. Drive Shaft System

6) Remove the bolt from the front axle housing.

Subaru Outback. Drive Shaft System

  1. Front axle housing
  2. Disc brake cover
  3. Front hub unit bearing

CAUTION:

Subaru Outback. Drive Shaft System

  1. Magnetic encoder
  2. Front hub unit bearing

7) Remove the front hub unit bearing. If it is hard to remove, use the ST.

PREPARATION TOOL:
ST1: AXLE SHAFT PULLER (926470000)
ST2: AXLE SHAFT PULLER PLATE (28099PA110)

Subaru Outback. Drive Shaft System

B: INSTALLATION

1) Install the front axle housing (a) and front hub unit bearing (c) to the disc brake cover (b) as shown in the figure, and tighten the bolt.

Subaru Outback. Drive Shaft System

Tightening torque: 65 N*m (6.63 kgf-m, 47.9 ft-lb)

2) Install the front drive shaft. <Ref. to DS-49, INSTALLATION, Front Drive Shaft.>

3) Tighten the axle nut temporarily.

4) Install the disc rotor to hub unit bearing.

5) Install the disc brake caliper to the front axle housing.

Tightening torque: 120 N*m (12.24 kgf-m, 88.5 ft-lb)

6) Install the front ABS wheel speed sensor.

Tightening torque: 7.5 N*m (0.76 kgf-m, 5.5 ft-lb)

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

CAUTION: Do not load the front axle before tightening the axle nut. Doing so may damage the hub bearing.

Tightening torque: 220 N*m (22.43 kgf-m, 162.3 ft-lb)

8) Inspect the lean of axis direction using a dial gauge. Replace the bearing if the load range exceeds the limitation.

Subaru Outback. Drive Shaft System

Service limit: Maximum: 0.05 mm (0.0020 in)

9) After tightening the axle nut, lock it securely.

Subaru Outback. Drive Shaft System

10) Install the wheel.

Tightening torque: 120 N*m (12.24 kgf-m, 88.5 ft-lb)

11) Moving the front tire up and down by hand, check there is no play in bearing, and check the wheel rotates smoothly.

CAUTION: If there is any fault in the bearing, replace hub unit bearing.

Subaru Outback. Drive Shaft System

C: DISASSEMBLY

Using the ST or a hydraulic press, push out the hub bolt (b) from the front hub unit bearing (a).

CAUTION:

PREPARATION TOOL: ST: HUB STAND (28399AG000)

Subaru Outback. Drive Shaft System

NOTE: Since the hub unit bearing can not be disassembled, only hub bolts can be removed.

D: ASSEMBLY

1) Install the hub unit bearing to the ST securely.

PREPARATION TOOL: ST: HUB STAND (927080000)

2) Using a press, press the new hub bolts (b) until their seating surfaces contact the hub unit bearing (a).

Subaru Outback. Drive Shaft System

NOTE: Use the 12 mm (0.47 in) dia. holes in the HUB STAND to prevent bolts from tilting.

E: INSPECTION

1) Moving the front tire up and down by hand, check there is no play in bearing, and check the wheel rotates smoothly.

CAUTION: If there is any fault in the bearing, replace hub unit bearing.

Subaru Outback. Drive Shaft System

2) Inspect the lean of axis direction using a dial gauge. Replace the bearing if the load range exceeds the limitation.

Service limit: Maximum: 0.05 mm (0.0020 in)

Subaru Outback. Drive Shaft System

READ NEXT:

 Rear Axle

A: REMOVAL 1) Lift up the vehicle, and then remove the rear wheels. 2) Remove the axle nut. CAUTION: Do not loosen the axle nut while the rear axle is loaded. Doing so may damage the hub bearing.

 Rear Hub Unit Bearing

A: REMOVAL 1) Lift up the vehicle, and then remove the rear wheels. 2) Remove the axle nut. CAUTION: Do not loosen the axle nut while the rear axle is loaded. Doing so may damage the hub bearing.

 Front Drive Shaft

A: REMOVAL 1) Lift up the vehicle, and then remove the front wheels. 2) Remove the axle nut. CAUTION: Do not loosen the axle nut while the front axle is loaded. Doing so may damage the hub bearing.

SEE MORE:

 Brake Booster

A: REMOVAL CAUTION: Do not allow brake fluid to come in contact with the painted surface of the vehicle body. If it does, wash off with water and wipe away completely. 1) Disconnect the ground cable from battery. 2) Drain brake fluid from the reservoir tank completely. 3) Remove the master cylind

 Periodic Maintenance Services

General Description A: GENERAL DESCRIPTION Be sure to perform periodic maintenance in order to maintain vehicle performance and find problems before they occur. Schedule A: MAINTENANCE SCHEDULE 1 1. MODEL WITH US SPECIFICATION Other than U5 model Symbols used: R: Replace I: Inspection P: Perfo

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