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Home >> Subaru >> 2017 >> Legacy 2.5i Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Continuously Variable Transaxle (CVT) (H6DO)) >> Forward Clutch Assembly >> Assembly

Forward Clutch Assembly: Assembly

WARNING: This page is about a different variant/trim than selected.
  1. Install the forward clutch piston to forward clutch drum.
    NOTE:
    • Apply CVTF to the seal of forward clutch piston.
    • Insert it all the way to the end.
    Fig 1: Installing Forward Clutch Piston
    G06654585Courtesy of SUBARU OF AMERICA, INC.
  2. Install the return spring.
    Fig 2: Identifying Return Spring
    G06654583Courtesy of SUBARU OF AMERICA, INC.
  3. Install the forward clutch piston retainer.
    NOTE: Apply CVTF to the sealing portion of the forward clutch piston retainer.
    Fig 3: Identifying Forward Clutch Piston Retainer
    G06654582Courtesy of SUBARU OF AMERICA, INC.
  4. Compress the return spring using the ST to install the snap ring.

    ST 18762AA001 COMPRESSOR SPECIAL TOOL

    Fig 4: Compressing Return Spring
    G06654581Courtesy of SUBARU OF AMERICA, INC.
  5. Install the thrust needle bearing.
    NOTE: Install the thrust needle bearing in the correct direction.
    Fig 5: Identifying Thrust Needle Bearing
    G10276233Courtesy of SUBARU OF AMERICA, INC.
  6. Install the snap ring.
    Fig 6: Identifying Snap Ring
    G10276234Courtesy of SUBARU OF AMERICA, INC.
  7. Measure the height "A" from the ST end surface to the snap ring of forward clutch drum using the ST on the surface plate.
    NOTE:
    • Measure while lifting the snap ring.
    • Place the measurement tool at the dent on ST upper side to measure.

    ST1 499737100 PULLER SET

    ST2 499575600 GAUGE

    Fig 7: Measuring Height "A" From ST End Surface To Snap Ring Of Forward Clutch Drum
    G10276235Courtesy of SUBARU OF AMERICA, INC.
  8. Measure height "B" from the ST end surface to the thrust needle bearing using the ST.
    NOTE: Place the measurement tool at the dent on ST upper side to measure.

    ST1 499737100 PULLER SET

    ST2 499575600 GAUGE

    Fig 8: Measure Height "B" From ST End Surface To Thrust Needle Bearing
    G10276236Courtesy of SUBARU OF AMERICA, INC.
  9. Remove the snap ring.
    Fig 9: Identifying Snap Ring
    G10276234Courtesy of SUBARU OF AMERICA, INC.
  10. Place flat boards on the surface plate, and place the snap ring and then planetary carrier assembly overlapping neatly.
    NOTE: Carefully place them so that the most outer finished surface of planetary carrier assembly overlaps the snap ring.
    Fig 10: Identifying Planetary Carrier Assembly And Snap Ring
    G11575161Courtesy of SUBARU OF AMERICA, INC.
  11. Install the thrust needle bearing.
    NOTE: Make sure to install in the right direction.
    Fig 11: Identifying Thrust Needle Bearing
    G10276239Courtesy of SUBARU OF AMERICA, INC.
  12. Install the sun gear.
    NOTE: Make sure to install in the right direction.
    Fig 12: Identifying Sun Gear
    G10276240Courtesy of SUBARU OF AMERICA, INC.
  13. Install the forward clutch hub.
    Fig 13: Identifying Forward Clutch Hub
    G10276241Courtesy of SUBARU OF AMERICA, INC.
  14. Using the ST, measure the height "C" from the ST end surface to the flat board with the snap ring placed on.
    NOTE: Place the measurement tool at the dent on ST upper side to measure.

    ST 499737100 PULLER SET

    Fig 14: Measuring Height "C" From ST End Surface To Flat Board
    G10276242Courtesy of SUBARU OF AMERICA, INC.
  15. Using the ST, measure the height "D" from the ST end surface to the washer catch surface of the forward clutch hub.
    NOTE: Place the measurement tool at the dent on ST upper side to measure.

    ST 499737100 PULLER SET

    Fig 15: Measuring Height "D" From ST End Surface To Washer Catch Surface
    G10276243Courtesy of SUBARU OF AMERICA, INC.
  16. Obtain the thickness of washer using the values measured from step  7 to step  15.

    Calculation formula:

    T mm = (B - A) - (C - D) - (0.0 - 0.20)

    [T in = (B - A) - (C - D) - (0.0 - 0.008)]

    T: Washer thickness

    A: Height from the ST end surface to the snap ring of the forward clutch drum

    B: Height from the ST end surface to the thrust needle bearing

    C: Height from the ST end surface to the flat board with the snap ring placed on

    D: Height from the ST end surface to the washer catch surface of the forward clutch hub

    0.0 - 0.20 mm (0.0 - 0.008 in): Clearance

  17. Select the washer to meet the value "T" obtained from step  16.
    Washer
    Part No. Thickness mm (in)
    31598AA090 4.7 (0.185)
    31598AA100 4.8 (0.189)
    31598AA110 4.9 (0.193)
    31598AA060 5.0 (0.197)
    31598AA120 5.1 (0.201)
    31598AA130 5.2 (0.205)
    31598AA140 5.3 (0.209)
  18. Install the dish plate, drive plate, driven plate and retaining plate.
    Fig 16: Identifying Dish Plate, Drive Plate, Driven Plate And Retaining Plate
    G06654580Courtesy of SUBARU OF AMERICA, INC.
  19. Install the planetary carrier assembly.
    Fig 17: Identifying Planetary Carrier Assembly
    G10276218Courtesy of SUBARU OF AMERICA, INC.
  20. Install the snap ring.
    Fig 18: Identifying Snap Ring
    G10276217Courtesy of SUBARU OF AMERICA, INC.
  21. Hold the forward clutch drum on a vise, and set the ST.

    ST1 498247001 MAGNET BASE

    ST2 498247100 DIAL GAUGE

    Fig 19: Setting Special Tools To Forward Clutch Drum
    G10276247Courtesy of SUBARU OF AMERICA, INC.
  22. Lift the planetary carrier assembly, and read the value "A" indicated on the dial gauge.
    NOTE: Measure at four points with a 90° interval and calculate the average.
    Fig 20: Lifting Planetary Carrier Assembly
    G11575171Courtesy of SUBARU OF AMERICA, INC.
  23. If the value "A" obtained from step  22 exceeds the limit for use, replace the drive plate and driven plate with new parts and select the retaining plate within the initial standard value.

    Initial standard: 

    1.2 - 1.6 mm (0.047 - 0.063 in) 

    Limit thickness: 

    2.4 mm (0.09 in) 

    Retaining plate
    Part No. Thickness mm (in)
    31567AB890 2.0 (0.079)
    31567AB900 2.2 (0.087)
    31567AB910 2.4 (0.094)
    31567AB640 2.6 (0.102)
  24. Remove the snap ring and the planetary carrier assembly.
  25. Replace with the retaining plate selected in step  23 to install.
  26. Install the thrust needle bearing.
    NOTE: Install the thrust needle bearing in the correct direction.
    Fig 21: Identifying Thrust Needle Bearing
    G06654597Courtesy of SUBARU OF AMERICA, INC.
  27. Install the washer selected in step  17.
    Fig 22: Installing Washer
    G06654577Courtesy of SUBARU OF AMERICA, INC.
  28. Install the forward clutch hub.
    Fig 23: Identifying Forward Clutch Hub
    G10276221Courtesy of SUBARU OF AMERICA, INC.
  29. Install the sun gear.
    Fig 24: Identifying Sun Gear
    G10276220Courtesy of SUBARU OF AMERICA, INC.
  30. Install the thrust needle bearing.
    NOTE: Install the thrust needle bearing in the correct direction.
    Fig 25: Identifying Thrust Needle Bearing
    G10276219Courtesy of SUBARU OF AMERICA, INC.
  31. Install the planetary carrier assembly.
    Fig 26: Identifying Planetary Carrier Assembly
    G10276218Courtesy of SUBARU OF AMERICA, INC.
  32. Install the snap ring.
    Fig 27: Identifying Snap Ring
    G10276217Courtesy of SUBARU OF AMERICA, INC.
  33. Install the thrust needle bearing.
    NOTE: Install the thrust needle bearing in the correct direction.
    Fig 28: Identifying Thrust Needle Bearing
    G10276216Courtesy of SUBARU OF AMERICA, INC.
  34. Install the thrust gear plate to the internal gear.
    Fig 29: Identifying Thrust Gear Plate And Internal Gear
    G10276215Courtesy of SUBARU OF AMERICA, INC.
  35. Install the snap ring.
    Fig 30: Identifying Snap Ring
    G10276214Courtesy of SUBARU OF AMERICA, INC.
  36. Install the internal gear assembly.
Fig 31: Identifying Internal Gear Assembly
G10276213Courtesy of SUBARU OF AMERICA, INC.
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