Subaru Legacy (2005 year). Service manual — part 751

DS-19

DRIVE SHAFT SYSTEM

Rear Hub Unit Bearing

5. Rear Hub Unit Bearing

A: 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 and
brake cable bracket.

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 be-
fore 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 rear hub unit bearing.

CAUTION:
• Be careful not to damage the magnetic en-
coder.
• Do not get closer the tool which charged
magnetism to magnetic encorder.

DS-00038

DS-00147

DS-00148

(1) Magnetic encoder

(2) Rear hub unit bearing

DS-00149

DS-00251

(2)

(1)

DS-00150

DS-20

DRIVE SHAFT SYSTEM

Rear Hub Unit Bearing

NOTE:
If it is hard to remove, use STs.
ST1

926470000

AXLE SHAFT PULLER

ST2

927140000

AXLE SHAFT PULLER
PLATE

B: INSTALLATION

1) Aligning the rear hub unit bearing to the mount-
ing hole of the back plate, install the hub unit as-
sembly and back plate. Tighten the axle nut
temporarily.

CAUTION:
• Be careful not to damage the magnetic en-
coder.
• Do not get closer the tool which charged
magnetism to magnetic encorder.

2) Tighten the four bolts to the back plate.

Tightening torque:

65 N

⋅

m (6.6 kgf-m, 47.9 ft-lb)

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 N

⋅

m (5.4 kgf-m, 39.1 ft-lb)

8) Install the rear ABS wheel speed sensor and
brake cable bracket.

9) Adjust the parking brake lever stroke by turning
adjuster. <Ref. to PB-4, ADJUSTMENT, Parking
Brake Lever.>

(1) Magnetic encoder

(2) Rear hub unit bearing

DS-00122

ST2

ST1

DS-00251

(2)

(1)

DS-00151

DS-00149

DS-00152

DS-00147

DS-21

DRIVE SHAFT SYSTEM

Rear Hub Unit Bearing

10) While applying the parking brake and depress-
ing the brake pedal, tighten a new axle nut (olive
color) to the specified torque and lock it securely.

Tightening torque:

190 N

⋅

m (19.4 kgf-m, 140 ft-lb)

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 dam-
age 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:

90 N

⋅

m (9.2 kgf-m, 66 ft-lb)

C: 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 rear hub unit bearing can not be disas-
sembled, only hub bolts can be removed.

D: 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 in) dia. holes in HUB STAND to
prevent bolts from tilting.

E: INSPECTION

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

2) Inspect the lean of axis direction using a dial
gauge. Replace the rear hub unit hub bearing if the
lean range exceed the limitation.

Service limit:

Maximum: 0.05 mm (0.0020 in)

(1) Rear hub unit bearing

DS-00048

DS-00254

ST

(1)

(1) Rear hub unit bearing

DS-00255

ST

(1)

DS-00183

DS-00062

DS-22

DRIVE SHAFT SYSTEM

Front Drive Shaft

6. Front Drive Shaft

A: REMOVAL

1) Disconnect the ground cable from battery.
2) Lift-up the vehicle and remove the front wheels.
3) Drain the transmission gear oil. (MT model)
4) Drain the differential gear oil. (AT model)
5) Unlock the axle nut.

6) 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.
7) Remove the stabilizer link from front arm.
8) Disconnect the front arm ball joint from housing.

9) Remove the front drive shaft assembly. If it is
hard to remove, use ST1 and ST2.
ST1

926470000

AXLE SHAFT PULLER

ST2

927140000

AXLE SHAFT PULLER
PLATE

10) Using a bar, remove the front drive shaft from
transmission.

CAUTION:
Be careful not to allow the bar to damage holder
area.

B: INSTALLATION

1) Using the ST, replace the differential side retain-
er oil seal with a new one.
ST

18675AA000

DIFFERENTIAL SIDE OIL
SEAL INSTALLER

NOTE:
After pulling out the drive shaft, be sure to replace
with a new oil seal.

2) Insert the EBJ into hub splines.
3) Draw the drive shaft into specified position.

CAUTION:
Do not hammer drive shaft when installing it.
4) Tighten the axle nut temporarily.
5) Using the ST, install the front drive shaft to trans-
mission.
ST

28399SA010

OIL SEAL PROTECTOR

6) Connect the front arm ball joint to housing.

Tightening torque:

50 N

⋅

m (5.1 kgf-m, 36.9 ft-lb)

7) Install the stabilizer link.

CAUTION:
Be sure to use a new self-locking nut.

Tightening torque:

45 N

⋅

m (4.6 kgf-m, 33.2 ft-lb)

DS-00038

FS-00106

DS-00145

ST2

ST1

MT-00103

ST

AT-00110

ST