Differential Case Assembly

Install the washer and differential bevel gear into differential case (LH).

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Install the differential bevel gear pinions into differential case (LH) and install the pinion shaft.

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Install the straight pin.

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Install the differential case (RH) to hypoid driven gear and secure with vise.

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Install the washer and differential bevel gear to the differential case (RH).

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Using the ST, install the hypoid driven gear by tightening the installation bolt.
ST 18270KA020 SOCKET (E20)

Tightening torque:

20 N.m (2.0 kgf-m, 14.8 ft-lb)

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While checking the tightening angle with the angle gauge, further tighten the hypoid driven gear mounting bolts.
Tightening angle:

45°±2°

Measurement of backlash (selection of washer)

Install the SUBARU genuine axle shaft to differential case.
Part No. 38415AA070

Axle shaft

Measure the gear backlash using ST1 and ST2, and then insert the ST2 through the window of differential case.

ST1 498247001 MAGNET BASE

ST2 498247100 DIAL GAUGE

NOTE:

Measure the backlash by applying a differential bevel pinion tooth between two differential bevel gear teeth.
When measuring, fix the differential bevel pinion in place with a screwdriver covered with cloth, or a similar tool.

Specification:

0.13 - 0.18 mm (0.0051 - 0.0071 in)

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If the backlash is not within specification, select a washer from the table below and replace.