2021 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

Drive Pinion: Installation

  1. Clean the mating surface of drive pinion retainer and converter case.
  2. Adjust backlash and tooth contact of the hypoid gear set. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Drive Pinion>ADJUSTMENT .
  3. Install it to the drive pinion retainer with a new O-ring (oil pump side).
    CAUTION:
    • Apply sufficient amount of CVTF to the O-rings.
    • Use SUBARU genuine CVTF.
    • Be careful not to incorrectly install or fail to install O-rings and other such parts.
  4. Install the gasket and the oil pump.
    NOTE: Apply CVTF to the bolt.

    Tightening torque: 

    8.5 N.m (0.9 kgf-m, 6.3 ft-lb)

  5. Apply liquid gasket seamlessly to the mating surface of drive pinion retainer, and temporarily install it.
    NOTE: Be careful not to block the arrowed hole when applying liquid gasket.

    Liquid gasket: 

    THREE BOND 1215B or equivalent

    G12452517Courtesy of SUBARU OF AMERICA, INC.
  6. Install a new O-ring to the release pressure pipe.
    CAUTION:
    • Apply sufficient amount of CVTF to the O-rings.
    • Use SUBARU genuine CVTF.
    • Be careful not to incorrectly install or fail to install O-rings and other such parts.
    G13200278Courtesy of SUBARU OF AMERICA, INC.
  7. Set the drive pinion retainer and release pressure pipe to the converter case, and tighten the bolt using the ST (SOCKET (E20)).
    NOTE: Do not confuse the three different-length bolts when installing.

    Tightening torque: 

    43 N.m (4.4 kgf-m, 31.7 ft-lb)

    G09482249Courtesy of SUBARU OF AMERICA, INC.
  8. Install the primary pulley, secondary pulley and variator chain. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Primary Pulley and Secondary Pulley>INSTALLATION .
  9. Install the transmission case. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transmission Case>INSTALLATION .
  10. Install the forward clutch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Forward Clutch>INSTALLATION .
  11. Install the intermediate case. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Intermediate Case>INSTALLATION .
  12. Install the transfer reduction driven gear. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transfer Reduction Driven Gear>INSTALLATION .
  13. Install the transfer clutch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transfer Clutch>INSTALLATION .
  14. Install the rear drive shaft. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Rear Drive Shaft>INSTALLATION .
  15. Install the extension case. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Extension Case>INSTALLATION .
  16. Install the transmission harness. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transmission Harness>INSTALLATION .
  17. Install the oil pan and the control valve body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Control Valve Body>INSTALLATION .
  18. Install the air breather hose. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Air Breather Hose>INSTALLATION .
  19. Install the transmission body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transmission Assembly>INSTALLATION .
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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.