Subaru 2009 IMPREZA Service Manual page 2346

DRIVE SHAFT SYSTEM
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
2) Install the front drive shaft. <Ref. to DS-26, IN-
STALLATION, Front Drive Shaft.>
3) Tighten the axle nut temporarily.
4) Install the disc rotor to 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 to the specified torque and lock it securely.
Tightening torque:
220 N·m (22.4 kgf-m, 162.3 ft-lb)
CAUTION:
• Do not install wheel and let it touch the
ground before tightening the axle nut. Failure to
follow this rule may damage the axle bearing.
• Do not overtighten the nuts as this may dam-
age the axle bearing.
7) After tightening the axle nut, lock it securely.
8) Install the wheel.
Tightening torque:
100 N·m (10.2 kgf-m, 73.8 ft-lb)
Front Hub Unit Bearing
C: DISASSEMBLY
Using the ST and a hydraulic press, push out the
hub bolts.
ST 28399AG000 HUB STAND
CAUTION:
• Be careful not to hammer the hub bolts. This
may deform the hub.
• Do not reuse the hub bolt.
(A)
NOTE:
Since the hub unit bearing can not be disassem-
bled, only hub bolts can be removed.
DS-00231
D: ASSEMBLY
1) Attach the hub to the ST securely.
ST 927080000
2) Using a press, press the new hub bolts until their
seating surfaces contact the hub.
NOTE:
Use the 12 mm (0.47 in) dia. holes in the HUB
STAND to prevent bolts from tilting.
E: INSPECTION
DS-00048
Refer to "Front Axle" for inspection procedures.
<Ref. to DS-16, INSPECTION, Front Axle.>
CAUTION:
If there is any fault in the bearing, replace hub
unit bearing.
DS-18
(1)
(1) Front hub unit bearing
HUB STAND
(1)
ST
(1) Front hub unit bearing
ST
DS-00252
DS-00253