Subaru 2009 IMPREZA, Service Manual

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WT-7
Aluminum Wheel
WHEEL AND TIRE SYSTEM
3. Aluminum Wheel
A: REMOVAL
1) Apply the parking brake, and position select le-
ver or shift lever to “P” range (AT model) or “1st
gear” (MT model).
2) Set the shop jacks or a lift to the specified points,
and support the vehicle with its wheels slightly con-
tacting the floor.
3) Loosen the wheel nuts.
4) Raise the vehicle until its wheels are off the
ground using the jack or a lift.
5) Remove the wheel nuts and wheels.
NOTE:
• When removing the wheels, be careful not to
damage the hub bolts.
• Place the wheels with their outer sides facing up-
ward to prevent wheels from being damaged.
B: INSTALLATION
1) Remove dirt from the mating surface of the
wheel and brake rotor.
2) Attach the wheel to the hub by aligning the wheel
bolt holes with the hub bolts.
3) Temporarily attach the wheel nuts to the hub
bolts. (Use SUBARU genuine wheel nuts for alumi-
num wheels.)
4) Tighten the nuts by hand, making sure the wheel
hub hole is aligned correctly to the guide portion of
hub.
5) Tighten the wheel nuts in a diagonal selection to
the specified torque. Use a wheel nut wrench.
Wheel nut tightening torque:
100 N·m (10.2 kgf-m, 73.8 ft-lb)
CAUTION:
• Tighten the wheel nuts in two or three steps
by gradually increasing the torque on opposing
nuts, until they reach the specified torque.
• Do not push the wrench by foot. Always use
both hands when tightening the nuts.
• Make sure the bolt, nut and the nut seating
surface of the wheel are free from oil.
6) If a wheel is removed for replacement or for re-
pair of a puncture, retighten the wheel nuts to the
specified torque after driving 1,000 km (600 miles).
C: INSPECTION
1) Deformation or damage to the rim may cause air
leakage. Check the rim flange for deformation,
cracks or damage, and repair or replace as neces-
sary.
2) Jack-up the vehicle until wheels clear the floor.
3) Slowly rotate the wheel to check rim “runout” us-
ing a dial gauge.
4) If the rim runout exceeds specifications, replace
the wheel.
D: CAUTION
Aluminum wheels are easily scratched. To main-
tain their appearance and safety, be careful of the
following:
1) Be careful not to damage the aluminum wheels
during removal, installation, wheel balancing, etc.
After removing aluminum wheels, place them on a
rubber mat etc.
2) When washing the aluminum wheel, use neutral
synthetic detergent and water. Avoid using cleans-
ers containing abrasives, hard brushes or an auto-
matic car washer.
Axial runout limit Radial runout limit
1.0 mm (0.039 in)
WT-00004