DRIVE SHAFT SYSTEM > Front Hub Unit Bearing
INSPECTION
1. Moving the front tire up and down by hand, check there is no looseness in bearing, and check the wheel rotates smoothly.
CAUTION:
If there is unsmooth sliding operation or abnormal noise in the bearing, replace the hub unit bearing.

2. Inspect the hub unit bearing for axial looseness.
(1) Remove the tire and disc rotor.
(2) Using a dial gauge, check the axial looseness. Replace the hub unit bearing if looseness exceeds the limit.
Service limit:
Maximum: 0.05 mm (0.0020 in)

Disassembly
InstallationSnow tires
WARNING
When installing winter tires on the Subaru Ascent, it is absolutely essential
that all four tires are identical in the following characteristics.
Size
Speed rating
Load index
Circumference
Construction type
Manufacturer
Brand and tread pattern
Level of wear
...
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