Differential Case ASSY

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

Fig 1: Identifying Washer And Differential Bevel Gear
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Install the differential bevel gear pinions into differential case (LH) and install the pinion shaft.

Fig 2: Identifying Pinion Shaft, Differential Bevel Gear And Differential Bevel Pinion
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Install the straight pin.

Fig 3: Installing Straight Pin
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Install the differential case (RH) to hypoid driven gear and secure with vise.

Fig 4: Identifying Differential Case (RH)
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Install the washer and differential bevel gear to the differential case (RH).

Fig 5: Identifying Washer And Differential Bevel Gear
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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)

Fig 6: Identifying Hypoid Driven Gear With Socket
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While checking the tightening angle with the ST, further tighten the hypoid driven gear mounting bolts.
Tightening angle:

28°±2°

ST 18554AA000 ANGLE GAUGE

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 gear in place with a screwdriver covered with cloth, or a similar tool.
Specification:

0.13 - 0.18 mm (0.0051 - 0.0071 in)

Fig 7: Identifying Differential Bevel Pinion Gear With Bushing 1-2 Installer And Seat
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If the backlash is not within specification, select a washer from the table below and replace.