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Front Differential Assembly: Removal

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  1. Remove the transmission assembly from the vehicle. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>AUTOMATIC TRANSMISSION ASSEMBLY>REMOVAL .
  2. Remove the air breather hose. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>AIR BREATHER HOSE>REMOVAL .
  3. Remove the control valve body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>CONTROL VALVE BODY>REMOVAL .
  4. Remove the transmission harness. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSMISSION HARNESS>REMOVAL .
  5. Remove the turbine speed sensor. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TURBINE SPEED SENSOR>REMOVAL .
  6. Remove the secondary speed sensor. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>SECONDARY SPEED SENSOR>REMOVAL .
  7. Remove the primary speed sensor. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>PRIMARY SPEED SENSOR>REMOVAL .
  8. Remove the inhibitor switch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>INHIBITOR SWITCH>REMOVAL .
  9. Remove the extension case. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>EXTENSION CASE>REMOVAL .
  10. Remove the transfer clutch assembly. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSFER CLUTCH>REMOVAL .
  11. Remove the transfer driven gear assembly. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSFER DRIVEN GEAR>REMOVAL .
  12. Remove the parking pawl. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>PARKING PAWL>REMOVAL .
  13. Remove the reduction driven gear assembly. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>REDUCTION DRIVEN GEAR>REMOVAL .
  14. Remove the oil pan and oil strainer. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>OIL PAN AND STRAINER>REMOVAL .
  15. Remove the transmission control device. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSMISSION CONTROL DEVICE>REMOVAL .
  16. Remove the transmission case. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSMISSION CASE>REMOVAL .
  17. Remove the reduction drive gear. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>REDUCTION DRIVE GEAR>REMOVAL .
  18. Remove the primary pulley, secondary pulley and variator chain. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>PRIMARY PULLEY AND SECONDARY PULLEY>REMOVAL .
  19. Remove the reverse brake assembly. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>REVERSE BRAKE ASSEMBLY>REMOVAL .
  20. Remove the forward clutch assembly. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>FORWARD CLUTCH ASSEMBLY>REMOVAL .
  21. Remove the drive pinion shaft assembly. Ref. 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.
    G13936979Courtesy 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 cutout 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. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>FRONT DIFFERENTIAL ASSEMBLY>DISASSEMBLY>SIDE RETAINER .
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