Differential Case Assembly

Install the washer, differential bevel gear and differential bevel pinion in the differential case (RH). Insert the pinion shaft.
Attach the straight pin in the reverse direction.

Fig 1: Attaching Straight Pin
Courtesy of SUBARU OF AMERICA, INC.
Install the washer and differential bevel gear to the differential case (LH). Put the differential case (LH) on the differential case (RH), and assemble the two cases.
Install the hypoid driven gear and secure by tightening the bolt.
Tightening torque:

62 N.m (6.3 kgf-m, 45.7 ft-lb)

Fig 2: Hypoid Driven Gear, Differential Case (RH) And (LH)
Courtesy of SUBARU OF AMERICA, INC.
Measurement of backlash (Selection of washer)
1. Install the SUBARU genuine axle shaft to differential case.
  Part No. 38415AA070 AXLE SHAFT
2. Measure the gear backlash using ST1 and ST2, and then insert the ST2 though the access window of case.
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.
Standard:

0.13 - 0.18 mm (0.0051 - 0.0071 in)

ST1 498247001 MAGNET BASE

ST2 498247100 DIAL GAUGE

Fig 3: Measuring Backlash Of Differential Bevel Gear Teeth
Courtesy of SUBARU OF AMERICA, INC.

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

PARTS THICKNESS SPECIFICATION CHART

Using the ST, install the taper roller bearing.
ST 398487700 INSTALLER

Fig 4: Installing Taper Roller Bearing Using ST
Courtesy of SUBARU OF AMERICA, INC.