Wheel Bearing - Subaru 2009 IMPREZA Service Manual

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22.Wheel Bearing

A: INSPECTION

1. FRONT HUB UNIT

1) Jack-up the front side of vehicle.

2) While holding the front wheel by hand, swing it in

and out to check that there is no bearing free play.

3) Loosen the wheel nuts, and remove the front

4) If the bearing free play exists in step 2) above,

attach a dial gauge to hub and measure the loose-

ness in the axial direction.

Service limit:

Straight-ahead position within 0.05 mm

5) Remove the bolts and self-locking nuts, and ex-

tract transverse link from the front crossmember.

6) Remove the AAR of front drive shaft from trans-

mission. <Ref. to DS-13, Front Axle.>

7) While supporting the front drive shaft horizontal-

ly with one hand, turn the hub with the other hand to

check for noise or binding.

If the hub is noisy or binds, replace the front hub

Wheel Bearing

2. REAR HUB UNIT

1) Jack-up the rear side of vehicle.

2) While holding the rear wheel by hand, swing it in

and out to check bearing free play.

3) Loosen the wheel nuts, and remove the rear

4) If the bearing free play exists in step 2) above,

attach a dial gauge to hub and measure the loose-

ness in the axial direction.

Service limit:

Straight-ahead position within 0.05 mm

5) Remove the DOJ of rear drive shaft from rear dif-

ferential. <Ref. to DS-30, Rear Drive Shaft.>

6) While supporting rear drive shaft horizontally

with one hand, turn the hub with the other to check

for noise or binding.

If the hub is noisy or binds, replace the rear hub

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