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Home › Subaru › 2018 › Outback 2.5i › Repair and Diagnosis › Transmission › Automatic Trans › CVT Transaxle (Tr580) › Reverse Brake Assembly › Assembly

Reverse Brake Assembly: Assembly

  1. Install the reverse brake piston.
    NOTE: Apply CVTF to the sealing area of reverse brake piston.
    G10406578Courtesy of SUBARU OF AMERICA, INC.
  2. Install the return spring.
    G08318036Courtesy of SUBARU OF AMERICA, INC.
  3. Install the spring retainer.
    G08318035Courtesy of SUBARU OF AMERICA, INC.
  4. Compress the return spring using the ST to install the snap ring.

    ST 18762AA001 COMPRESSOR SPECIAL TOOL 

    G10218835Courtesy of SUBARU OF AMERICA, INC.
  5. Check the operation of reverse brake piston by blowing compressed air intermittently from the reverse brake housing hole.
    G10406582Courtesy of SUBARU OF AMERICA, INC.
  6. Place the driven plate, drive plate and retaining plate neatly in this order on surface table.
  7. 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.
  8. 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 29 N (3.0 kgf, 6.5 lb).
  9. Put the flat board on retaining plate.
    G06654563Courtesy of SUBARU OF AMERICA, INC.
  10. Using the following formula, read the push/pull gauge and calculate "N".

    N = 29 N (3.0 kgf, 6.5 lb) - Z

    29 N (3.0 kgf, 6.5 lb): Load applied to clutch plate

    Z: Flat board weight

  11. 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.
    G12407542Courtesy of SUBARU OF AMERICA, INC.
  12. Install the dish plate, drive plate, driven plate, retaining plate and snap ring to the reverse brake housing.
    NOTE: Install the dish plate in the correct direction.
    G10218846Courtesy of SUBARU OF AMERICA, INC.
  13. Measure and record the clearance "B" between the retaining plate and snap ring.
    G10218847Courtesy of SUBARU OF AMERICA, INC.
  14. Piston stroke calculation

    Calculate with A and B dimensions recorded before. If it exceeds the limit, replace with a new drive plate and adjust within the initial standard value.

    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

    Initial standard:

    1.8 - 2.2 mm (0.071 - 0.087 in)

    Limit thickness:

    2.4 mm (0.094 in)

    Retaining plate
    Part No. Thickness mm (in)
    31567AB750 4.2 (0.165)
    31567AB800 4.4 (0.173)
    31567AB810 4.6 (0.181)
    31567AB820 4.8 (0.189)
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