Side Retainer

Install the oil seal.
NOTE:
- Use a new oil seal.
- Apply transmission gear oil to the oil seal lips, and install the oil seal while being careful not to deform the lip.
- Using the ST, install the oil seal by lightly tapping with a plastic hammer.
ST 18675AA000 DIFFERENTIAL SIDE OIL SEAL INSTALLER

Fig 1: Installing Differential Side Oil Seal
Courtesy of SUBARU OF AMERICA, INC.
Install the O-ring.
NOTE:
- Use new O-rings.
- Apply gear oil to O-ring.
- Do not stretch or damage the O-ring.
  
  Fig 2: Identifying Side Retainer O-Ring
  Courtesy of SUBARU OF AMERICA, INC.