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Front Reduction Driven Gear: Assembly

  1. Place the dish plate, driven plate, drive plate and retaining plate neatly in this order on surface table.
    NOTE: Make sure of the direction of dish plate.
  2. Set the dial gauge to retaining plate, and read its scale.
    NOTE: The value, which is read in the gauge at this time, is zero point.
  3. Scale and record the weight "Z" of a flat board which will be put on retaining plate.
    NOTE:
    • Use a stiff board which does not bend against load as a flat board to be put on retaining plate.
    • Use a flat board weighing less than 130 N (13.3 kgf, 29.2 lb).
  4. Put the flat board on retaining plate.
    Fig 1: Setting Dial Gauge To Retaining Plate
    G06654563Courtesy of SUBARU OF AMERICA, INC.
  5. Using the following formula, calculate load "N", a force of pressing with push/pull gauge.

    N = 130 N (13.3 kgf, 29.2 lb) - Z

    130 N (13.3 kgf, 29.2 lb): Load applied to clutch plate

    Z: Flat board weight

  6. Press the center of retaining plate by applying a force of "N" using push/pull gauge, and then measure and record the compression amount "A".
    NOTE: Measure at four points with a 90° interval and calculate the average.
    Fig 2: Setting Dial Gauge To Retaining Plate
    G06654784Courtesy of SUBARU OF AMERICA, INC.
  7. Install the dish plate, driven plate, drive plate, retaining plate and snap ring.
    NOTE: Make sure of the direction of dish plate.
  8. Measure and record the clearance "B" between the retaining plate and snap ring.
    NOTE: Before measuring, press down the whole circumference of retaining plate using your finger.
    Fig 3: Measuring Clearance "B" Between Retaining Plate And Snap Ring
    G06654785Courtesy of SUBARU OF AMERICA, INC.
  9. Piston stroke calculation

    Calculate with A and B dimensions recorded before.

    If out of standard, replace with a new drive plate and adjust it within standard.

    S mm (in) = A + B

    S: Piston stroke

    A: Compression amount of drive plate and dish plate

    B: Clearance between retaining plate and snap ring

    Specification: 

    2.4 - 2.8 mm (0.094 - 0.11 in) 

    RETAINING PLATE SPECIFICATIONS

    Retaining plate
    Part number Thickness mm (in)
    31667AB430 3.1 (0.122)
    31667AB440 3.3 (0.130)
    31667AB450 3.5 (0.138)
  10. Press-fit the ball bearing into front driven shaft.
    NOTE: Use a new ball bearing.
    Fig 4: Pressing Ball Bearing Into Front Driven Shaft
    G06654786Courtesy of SUBARU OF AMERICA, INC.
  11. Install the seal ring to the front driven shaft.
    NOTE:
    • Install a new seal ring.
    • Apply CVTF to the seal rings.
    Fig 5: Locating Seal Ring
    G06654781Courtesy of SUBARU OF AMERICA, INC.
  12. Install the front driven shaft to front driven gear.
  13. Using the ST, install the ball bearing.
    NOTE: Use a new ball bearing.

    ST 18651AA000 INSTALLER

    Fig 6: Identifying ST 18651AA000 Installer
    G06654788Courtesy of SUBARU OF AMERICA, INC.
  14. Install the front reduction driven gear assembly to converter case cover.
    Fig 7: Identifying Front Reduction Driven Gear Assembly
    G06654789Courtesy of SUBARU OF AMERICA, INC.
  15. Apply compressed air intermittently to check the piston operation.
    NOTE: Hold the arrowed area with a finger.
    Fig 8: Applying Compressed Air
    G06654790Courtesy of SUBARU OF AMERICA, INC.
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