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Extension Case: Installation

WARNING: This page is about a different car, the 2021 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean the mating surface of extension case and transmission case.
  2. Select the transfer drive gear shim. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>REDUCTION DRIVE GEAR>ADJUSTMENT .
  3. Select the transfer driven gear shim. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSFER CLUTCH>ADJUSTMENT .
  4. Attach the selected transfer drive gear shim to extension case with vaseline.
  5. Attach the selected transfer driven gear shim to extension case with vaseline.
  6. Install the O-ring to the transmission case.
    NOTE:
    • Use new O-rings.
    • Apply CVTF to the O-rings.
    G08317893Courtesy of SUBARU OF AMERICA, INC.
  7. Apply liquid gasket to extension case seamlessly.

    Liquid gasket: 

    THREE BOND 1215B or equivalent

    G08317895Courtesy of SUBARU OF AMERICA, INC.
  8. Install the extension case to transmission hanger.

    Tightening torque: 

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

    G10218696Courtesy of SUBARU OF AMERICA, INC.
  9. Install the transmission assembly. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>AUTOMATIC TRANSMISSION ASSEMBLY>INSTALLATION .
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