2021 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE

Drive Pinion: Installation

  1. Adjust backlash and tooth contact of the hypoid gear set. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Front Differential>ADJUSTMENT .
  2. Install a new O-ring to converter case.
    NOTE: Apply CVTF to the O-rings.
    G08318083Courtesy of SUBARU OF AMERICA, INC.
  3. Apply liquid gasket to the mating surface of the drive pinion retainer as shown in the figure, and temporarily install the drive pinion retainer.
    NOTE:
    • Before applying liquid gasket, degrease the old liquid gasket seal surface of the drive pinion retainer and converter case.
    • Install within 5 min. after applying liquid gasket.

    Liquid gasket: 

    THREE BOND 1215B or equivalent

    G13225955Courtesy of SUBARU OF AMERICA, INC.
  4. Tighten the bolt using the ST.

    Preparation tool: 

    ST: SOCKET (E20) (18270KA020)

    Tightening torque: 

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

    G13869512Courtesy of SUBARU OF AMERICA, INC.
  5. Install the forward clutch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Forward Clutch>INSTALLATION .
  6. Install the reverse brake. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Reverse Brake>INSTALLATION .
  7. Install the primary pulley, secondary pulley and variator chain. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Primary Pulley and Secondary Pulley>INSTALLATION .
  8. Install the reduction drive gear. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Reduction Drive Gear>INSTALLATION .
  9. Install the transmission case. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Transmission Case>INSTALLATION .
  10. Install the transmission control device. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Transmission Control Device>INSTALLATION .
  11. Install the oil strainer and oil pan. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Oil Pan>INSTALLATION .
  12. Install the reduction driven gear. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Reduction Driven Gear>INSTALLATION .
  13. Install the parking pawl. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Parking Pawl>INSTALLATION .
  14. Install the transfer driven gear. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Transfer Driven Gear>INSTALLATION .
  15. Install the transfer clutch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Transfer Clutch>INSTALLATION .
  16. Install the extension case. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Extension Case>INSTALLATION .
  17. Install the electric oil pump. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Electric Fluid Pump>INSTALLATION .
  18. Install the inhibitor switch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Inhibitor Switch>INSTALLATION .
  19. Install the secondary speed sensor. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Secondary Speed Sensor>INSTALLATION .
  20. Install the primary speed sensor. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Primary Speed Sensor>INSTALLATION .
  21. Install the turbine speed sensor. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Turbine Speed Sensor>INSTALLATION .
  22. Install the transmission harness. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Transmission Harness>INSTALLATION .
  23. Install the control valve body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Control Valve Body>INSTALLATION .
  24. Install the air breather hose. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Air Breather Hose>INSTALLATION .
  25. Install the transmission body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Transmission Assembly>INSTALLATION .
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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.