2022 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

Front Differential: Removal

  1. Remove the transmission body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transmission Assembly>REMOVAL .
  2. Remove the air breather hose. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Air Breather Hose>REMOVAL .
  3. Remove the oil pan and control valve body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Control Valve Body>REMOVAL .
  4. Remove the transmission harness. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transmission Harness>REMOVAL .
  5. Remove the extension case. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Extension Case>REMOVAL .
  6. Remove the rear drive shaft. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Rear Drive Shaft>REMOVAL .
  7. Remove the transfer clutch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transfer Clutch>REMOVAL .
  8. Remove the transfer reduction driven gear. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transfer Reduction Driven Gear>REMOVAL .
  9. Remove the intermediate case. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Intermediate Case>REMOVAL .
  10. Remove the forward clutch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Forward Clutch>REMOVAL .
  11. Remove the transmission case. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transmission Case>REMOVAL .
  12. Remove the primary pulley, secondary pulley and variator chain. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Primary Pulley and Secondary Pulley>REMOVAL .
  13. Remove the drive pinion. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Drive Pinion>REMOVAL .
  14. Remove the oil baffle.
    G13200307Courtesy of SUBARU OF AMERICA, INC.
  15. Remove the lock plate.
    G13864124Courtesy of SUBARU OF AMERICA, INC.
  16. Remove the differential side retainers using the ST.
    NOTE:
    • When the ST (WRENCH COMPL RETAINER) interferes with the converter case, align the cutout portion with the interference part.
    • Support the differential case by hand to avoid damaging the retainer mounting bolt hole of the converter case.
    • Keep the left and right differential side retainers and left and right side 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)

    G13200309Courtesy of SUBARU OF AMERICA, INC.
  17. Remove the front differential while being careful not to damage the attachment part of the differential side retainer.
  18. Remove the differential side retainer oil seal and O-ring from the differential side retainer. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Front Differential>ASSEMBLY>DIFFERENTIAL SIDE RETAINER .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.