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Home >> Subaru >> 2022 >> WRX Premium, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (CVT Transaxle (Tr690)) >> Forward Clutch >> Assembly >> Forward Clutch

Forward Clutch

WARNING: This page is about a different variant/trim than selected.
  1. Install the forward clutch piston, return spring and forward clutch piston retainer.
    NOTE:

    Apply CVTF to the sealing area of forward clutch piston and the sealing area of forward clutch piston retainer. 

    G14611339Courtesy of SUBARU OF AMERICA, INC.
  2. Compress the return spring using the ST and a press to install the snap ring.

    Preparation tool: 

    ST: COMPRESSOR SPECIAL TOOL (18762AA001)

    G13622171Courtesy of SUBARU OF AMERICA, INC.
  3. Blow compressed air through the hole shown in the figure, and check the forward clutch piston operation.
    G13622173Courtesy of SUBARU OF AMERICA, INC.
  4. Select a washer.
    1. Install the snap ring.
      G13622177Courtesy of SUBARU OF AMERICA, INC.
    2. Install the thrust bearing.
      NOTE:

      Make sure to install in the right direction. 

      G13622178Courtesy of SUBARU OF AMERICA, INC.
    3. Place flat boards on the surface plate, and set the ST1, ST2 and forward clutch drum.

      Preparation tool: 

      ST1: PULLER SET (499737100)

      ST2: GAUGE (499575600)

      G13622179Courtesy of SUBARU OF AMERICA, INC.
    4. Set the shim, etc. (A) between the snap ring and snap ring groove, and lift the snap ring.
      G13622180Courtesy of SUBARU OF AMERICA, INC.
    5. Measure the height "H1" from the ST end face to the snap ring (A).
      G13622181Courtesy of SUBARU OF AMERICA, INC.
    6. Measure the height "H2" from the ST end face to the thrust bearing (A).
      G13622182Courtesy of SUBARU OF AMERICA, INC.
    7. Remove the snap ring.
      G13622177Courtesy of SUBARU OF AMERICA, INC.
    8. Stack the snap ring (A) and the planetary carrier (B) on the flat boards.
      NOTE:

      Place them so that the most outer finished surface of planetary carrier overlaps the snap ring. 

      G13622185Courtesy of SUBARU OF AMERICA, INC.
    9. Install the thrust bearing.
      NOTE:

      Make sure to install in the right direction. 

      G13951290Courtesy of SUBARU OF AMERICA, INC.
    10. Install the sun gear.
      NOTE:

      Make sure to install in the right direction. 

      G13622187Courtesy of SUBARU OF AMERICA, INC.
    11. Install the forward clutch hub.
      G13622188Courtesy of SUBARU OF AMERICA, INC.
    12. Set the ST on the flat boards, measure the height "H3" from the ST end face to the flat boards.

      Preparation tool: 

      ST: PULLER SET (499737100)

      G13622189Courtesy of SUBARU OF AMERICA, INC.
    13. Measure the height "H4" from the ST end face to the washer catch surface of the forward clutch hub.
      G14611354Courtesy of SUBARU OF AMERICA, INC.
    14. Using the following calculation, calculate an appropriate washer thickness "T".
      NOTE:

      Adjust using 1 piece. 

      T = (H2 - H1) - (H3 - H4) - 0 - 0.20 (0 - 0.008 in)

      T Washer thickness mm (in)
      H1 Measured value (mm (in)) of step (5)
      H2 Measured value (mm (in)) of step (6)
      H3 Measured value (mm (in)) of step (12)
      H4 Measured value (mm (in)) of step (13)
      0 - 0.20 mm (0 - 0.008 in) Clearance specification
  5. Install the washer.
    G13622168Courtesy of SUBARU OF AMERICA, INC.
  6. Install the dish plate, forward clutch plate set and retaining plate.
    NOTE:

    Face the painted surface of dish plate toward the forward clutch plate set side. 

    G14611356Courtesy of SUBARU OF AMERICA, INC.
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