HYPOID Gear Backlash

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Set the ST1, ST2 and ST3. Insert the needle through transmission oil drain plug hole so that the needle comes in contact with the tooth surface on the right corner, and check the backlash.
ST1 498247001 MAGNET BASE

ST2 498247100 DIAL GAUGE

ST3 498255400 PLATE
Install SUBARU genuine axle shafts to both sides, rotate in the inversion direction so that the gauge contacts the tooth surface, and read the dial gauge
NOTE: If the backlash is outside the specified range, adjust it by turning the side retainer in the right side case.

Backlash

0.13 - 0.18 mm (0.0051 - 0.0071 in)

Part No. 38415AA100 Axle shaft

Fig 1: Measuring Hypoid Gear Backlash
Courtesy of SUBARU OF AMERICA, INC.