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Home >> Subaru >> 2024 >> Impreza Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> CVT Transaxle (Tr580) >> Extension Case >> Installation

Extension Case: Installation

  1. Check the projection (A) of the knock pins.
    NOTE: When attached on the extension case side, install on the transmission case side.
    G13936073Courtesy of SUBARU OF AMERICA, INC.

    Specification: 

    8.5 - 9.5 mm (0.33 - 0.37 in)

    G13936074Courtesy of SUBARU OF AMERICA, INC.
  2. Check that the following parts are not disconnected.
    • Shaft (A)
    • Parking pawl (B)
    • Return spring (C)
    G13936075Courtesy of SUBARU OF AMERICA, INC.
  3. Perform the following operations when replacing the extension case.
    1. Select the transfer driven gear shim. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>TRANSFER CLUTCH>INSTALLATION .
    2. Select the transfer drive gear shim. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>REDUCTION DRIVEN GEAR>INSTALLATION .
  4. Install a new seal ring.
    NOTE:
    • Apply CVTF to the seal rings.
    • Do not stretch the seal ring more than necessary.
    G13936072Courtesy of SUBARU OF AMERICA, INC.
  5. Install a new O-ring.
    NOTE: Apply CVTF to the O-rings.
    G16763438Courtesy of SUBARU OF AMERICA, INC.
  6. Using white vaseline, set the transfer driven gear shim and transfer drive gear shim.
    G13936078Courtesy of SUBARU OF AMERICA, INC.
  7. Install the extension case to transmission hanger.
    CAUTION: Be careful not to damage the oil seal of the extension case.
    1. Apply liquid gasket to the mating surface of the extension case as shown in the figure.
      NOTE:
      • Before applying liquid gasket, degrease the old liquid gasket seal surfaces of the extension case and transmission case.
      • Install within 5 min. after applying liquid gasket.

      Preparation items: 

      Liquid gasket: THREE BOND 1216J or equivalent

      G16763446Courtesy of SUBARU OF AMERICA, INC.
    2. Temporarily install the extension case and transmission hanger (A).
      G13936068Courtesy of SUBARU OF AMERICA, INC.
    3. Tighten the bolts to secure the extension case and transmission hanger.

      Tightening torque: 

      25 N.m (2.5 kgf-m, 18.4 ft-lb)

  8. Install the clips.
    G16763433Courtesy of SUBARU OF AMERICA, INC.
  9. Connect the ground terminal.
    NOTE: Let the ground terminal come into contact with the stopper (a) and tighten the bolt.
    G13935971Courtesy of SUBARU OF AMERICA, INC.
    G13935972Courtesy of SUBARU OF AMERICA, INC.

    Tightening torque: 

    13 N.m (1.3 kgf-m, 9.6 ft-lb)

    G16763432Courtesy of SUBARU OF AMERICA, INC.
  10. Install the electric oil pump. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>ELECTRIC FLUID PUMP>INSTALLATION .
  11. Install the transmission body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>TRANSMISSION ASSEMBLY>INSTALLATION .
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