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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: Identifying Flat Board On 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: Identifying Drive Plate, Driven Plate, Retaining Plate And Dish Plate
    G07913730Courtesy 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 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
    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: Identifying Ball Bearing On 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 On Front Driven Shaft
      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 Ball Bearing With 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 On Converter Case Cover
    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: Checking Piston Operation
    G06654790Courtesy of SUBARU OF AMERICA, INC.
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