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Home >> Subaru >> 2022 >> BRZ Limited, Automatic Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission System >> Transmission Case >> Assembly >> Transmission Case Body

Transmission Case Body

  1. Install the O-rings.
    G16526054Courtesy of SUBARU OF AMERICA, INC.
    (A) No. 4 brake piston
    (B) O-ring
    (C) O-ring
  2. Install the O-rings.
    G16526052Courtesy of SUBARU OF AMERICA, INC.
    (A) Brake reaction sleeve
    (B) O-ring
    (C) O-ring
  3. Set the No. 4 brake piston (B) to the brake reaction sleeve (A) and install it.
    CAUTION: Be careful not to damage the O-ring.
    NOTE: Apply ATF to the O-ring.
    G16526060Courtesy of SUBARU OF AMERICA, INC.
  4. Install the O-rings.
    G16526050Courtesy of SUBARU OF AMERICA, INC.
    (A) O-ring
    (B) 1st & reverse brake piston
  5. Install the 1st & reverse brake piston (A).
    CAUTION: Be careful not to damage the O-ring.
    NOTE: Apply ATF to the O-ring.
    G16526062Courtesy of SUBARU OF AMERICA, INC.
  6. Set the 1st & reverse brake return spring.
    G16526046Courtesy of SUBARU OF AMERICA, INC.
    (A) 1st & reverse brake return spring
    (B) Transmission case
  7. Compress the 1st & reverse brake return spring (A) using the ST to install the snap ring (B).

    Preparation tool: 

    ST: COMPRESSOR PISTON SPR NO. 3 (09350-07050)

    G16526045Courtesy of SUBARU OF AMERICA, INC.
  8. Check the operation of the 1st & reverse brake piston.
    1. Blow compressed air through the hole shown in the figure, and check that 1st & reverse brake piston moves smoothly when the pressure is released.
      NOTE: Blow compressed air of 392 kPa (4.0 kgf/cm2 , 56.8 psi).
      G16526065Courtesy of SUBARU OF AMERICA, INC.
    2. Perform the following check if the piston does not move smoothly.
      1. Check the installation conditions of the 1st & reverse brake piston.
  9. Install the brake apply tube by aligning its protrusion with the transmission case groove as shown in the figure.
    CAUTION: Check that the inside of the transmission case can be seen through the output revolution sensor installation hole.
    NOTE: Engage the claw of the 1st & reverse brake piston with the protrusion of the brake apply tube.
G16526066Courtesy of SUBARU OF AMERICA, INC.
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