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Front Differential Assembly: Removal

WARNING: This page is about a different car, the 2020 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the transmission assembly from the vehicle. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>AUTOMATIC TRANSMISSION ASSEMBLY>REMOVAL .
  2. Remove the air breather hose. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>AIR BREATHER HOSE>REMOVAL .
  3. Remove the control valve body. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>CONTROL VALVE BODY>REMOVAL .
  4. Remove the transmission harness. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSMISSION HARNESS>REMOVAL .
  5. Remove the turbine speed sensor. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TURBINE SPEED SENSOR>REMOVAL .
  6. Remove the secondary speed sensor. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>SECONDARY SPEED SENSOR>REMOVAL .
  7. Remove the primary speed sensor. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>PRIMARY SPEED SENSOR>REMOVAL .
  8. Remove the inhibitor switch. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>INHIBITOR SWITCH>REMOVAL .
  9. Remove the extension case. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>EXTENSION CASE>REMOVAL .
  10. Remove the transfer clutch assembly. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSFER CLUTCH>REMOVAL .
  11. Remove the transfer driven gear assembly. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSFER DRIVEN GEAR>REMOVAL .
  12. Remove the parking pawl. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>PARKING PAWL>REMOVAL .
  13. Remove the reduction driven gear assembly. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>REDUCTION DRIVEN GEAR>REMOVAL .
  14. Remove the oil pan and oil strainer. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>OIL PAN AND STRAINER>REMOVAL .
  15. Remove the transmission control device. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSMISSION CONTROL DEVICE>REMOVAL .
  16. Remove the transmission case. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSMISSION CASE>REMOVAL .
  17. Remove the reduction drive gear. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>REDUCTION DRIVE GEAR>REMOVAL .
  18. Remove the primary pulley, secondary pulley and variator chain. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>PRIMARY PULLEY AND SECONDARY PULLEY>REMOVAL .
  19. Remove the reverse brake assembly. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>REVERSE BRAKE ASSEMBLY>REMOVAL .
  20. Remove the forward clutch assembly. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>FORWARD CLUTCH ASSEMBLY>REMOVAL .
  21. Remove the drive pinion shaft assembly. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>DRIVE PINION SHAFT ASSEMBLY>REMOVAL .
  22. Remove the oil baffle.
    G11255990Courtesy of SUBARU OF AMERICA, INC.
  23. Remove the lock plates on both sides.
    G13603889Courtesy of SUBARU OF AMERICA, INC.
  24. Remove the differential side retainers using the ST.
    NOTE:
    • When the wrench COMPL retainer interferes with the converter case, align the cut out portion with the interference part.
    • Support the differential case assembly by hand to avoid damaging the retainer mounting hole of the converter case.
    • Keep the left and right differential side retainers and left and right bearing outer races by attaching tags or in similar ways to make it possible to identify RH and LH sides.

    Preparation tool: 

    ST: WRENCH COMPL RETAINER (18658AA021)

    G08318133Courtesy of SUBARU OF AMERICA, INC.
  25. Remove the front differential assembly while being careful not to damage the attachment part of the retainer.
    G11255993Courtesy of SUBARU OF AMERICA, INC.
  26. Remove the oil seals and O-rings from both differential side retainers. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>FRONT DIFFERENTIAL ASSEMBLY>DISASSEMBLY>SIDE RETAINER .
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