Subaru Legacy (2005 year). Manual - part 750

DS-15

DRIVE SHAFT SYSTEM

Front Axle

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

13) 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

1) Remove the four bolts from housing, and re-
move the front hub unit bearing and disc cover.

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

2) Disassemble the front hub unit bearing. <Ref. to
DS-18, DISASSEMBLY, Front Hub Unit Bearing.>

D: ASSEMBLY

1) Assemble the front hub unit bearing. <Ref. to
DS-18, ASSEMBLY, Front Hub Unit Bearing.>
2) Place the disc cover between housing and front
hub unit, and tighten the four bolts.

Tightening torque:

65 N

⋅

m (6.6 kgf-m, 47.9 ft-lb)

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

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.

(A) Housing

(1) Magnetic encoder

(2) Front hub unit bearing

DS-00048

DS-00231

(A)

(2)

DS-00250

(1)

(A) Housing

(1) Magnetic encoder

(2) Front hub unit bearing

DS-00231

(A)

(2)

DS-00250

(1)

DS-00061

DS-16

DRIVE SHAFT SYSTEM

Front Axle

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

Service limit:

Maximum: 0.05 mm (0.0020 in)

DS-00062

DS-17

DRIVE SHAFT SYSTEM

Front Hub Unit Bearing

4. Front Hub Unit Bearing

A: REMOVAL

1) Disconnect the ground cable from battery.
2) Lift-up the vehicle and remove the front wheels.
3) Unlock the 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 housing,
and suspend it from strut using a wire.
6) Remove the disc rotor from hub.

NOTE:
If the disc rotor seizes up within hub, drive disc rotor
out by installing an 8-mm bolt in screw hole on ro-
tor.

7) Remove four bolts from housing.

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

8) Remove the front hub unit bearing. If it is hard to
remove, use STs.
ST1

926470000

AXLE SHAFT PULLER

ST2

927140000

AXLE SHAFT PULLER 
PLATE

B: INSTALLATION

1) Place the disc cover between housing and front
hub unit, and tighten the four bolts.

Tightening torque:

65 N

⋅

m (6.6 kgf-m, 47.9 ft-lb)

(A) Housing

DS-00038

DS-00041

DS-00231

(A)

(1) Magnetic encoder

(2) Front hub unit bearing

(A) Housing

(2)

DS-00250

(1)

DS-00145

ST2

ST1

DS-00231

(A)

DS-18

DRIVE SHAFT SYSTEM

Front Hub Unit Bearing

2) Install the front drive shaft. <Ref. to DS-22, IN-
STALLATION, Front Drive Shaft.>
3) Tighten the axle nut temporarily.
4) Install the disc rotor on hub.
5) Install the disc brake caliper on the housing.

Tightening torque:

80 N

⋅

m (8.2 kgf-m, 59 ft-lb)

6) While depressing the brake pedal, tighten a new
axle nut (olive color) to specified torque and lock it
securely.

Tightening torque:

220 N

⋅

m (22.4 kgf-m, 162 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.
7) After tightening the axle nut, lock it securely.

8) 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 front 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 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

Refer to “FRONT AXLE” for inspection procedures.
<Ref. to DS-15, INSPECTION, Front Axle.>

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

DS-00048

(1) Front hub unit bearing

(1) Front hub unit bearing

ST

DS-00252

(1)

DS-00253

ST

(1)