2020 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE

Transfer Clutch: Assembly

  1. Install the transfer clutch piston.
    NOTE: Apply CVTF to the transfer clutch piston lip.
  2. Install the return spring.
  3. Install the transfer clutch piston seal (B).
    NOTE: Apply CVTF to the lip section of transfer clutch piston seal.
  4. Compress the return spring using the ST and a press to install the snap ring (A).

    Preparation tool: 

    ST: COMPRESSOR SPECIAL TOOL (18762AA001)

    G13225814Courtesy of SUBARU OF AMERICA, INC.
  5. Install the pressure plate and transfer clutch plate set, and then install the snap ring (A).
    G13225813Courtesy of SUBARU OF AMERICA, INC.
  6. Blow compressed air through transfer clutch hole, and check the transfer clutch piston operation.
    NOTE: Plug the holes through which the compressed air is not blown.
    G08317909Courtesy of SUBARU OF AMERICA, INC.
  7. Before measuring clearance "A", place same thickness shims on both sides to prevent the plate from tilting.
  8. When the clearance "A" exceeds the limit, select the transfer clutch plate set and pressure plate, and adjust the clearance "A" within the specified value.

    Specification: 

    0.7 - 1.1 mm (0.028 - 0.043 in)

    Service limit: 

    1.3 mm (0.051 in)

    G08317916Courtesy of SUBARU OF AMERICA, INC.
    1. Measure the thickness of the pressure plate for the transfer clutch plate set that has been used before replacement.
    2. Select the transfer clutch plate set that uses the pressure plate of which the value is close to the measured value in (1), and check the clearance "A".
    3. When the clearance "A" exceeds the limit for use in step (2), replace the pressure plate installed on the lower side of the transfer clutch plate set, and check the clearance "A" again.
    4. When the clearance "A" exceeds the limit for use in step (3), select the transfer clutch plate set that was not used in step (2), and adjust the clearance "A" again.
  9. Check the clearance between snap ring and pressure plate. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>TRANSFER CLUTCH>INSPECTION .
  10. Install a new ball bearing using ST1, ST2 and a press.
    NOTE: Apply CVTF to the ball bearing.

    Preparation tool: 

    ST1: INSTALLER (398177700)

    ST2: INSTALLER (499277200)

    G08317917Courtesy of SUBARU OF AMERICA, INC.
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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.