2022 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

Transmission Case: Assembly

  1. Using the ST, install the oil seal.

    Preparation tool: 

    ST: INSTALLER (18657AA000)

    G13200237Courtesy of SUBARU OF AMERICA, INC.
  2. Install it using ST1, ST2 and a press, with a new ball bearing (reduction driven gear side).
    CAUTION:
    • Before press-fitting the ball bearing, apply CVTF to press-fitting surface.
    • Use SUBARU genuine CVTF.

    Preparation tool: 

    ST1: INSTALLER (398177700)

    ST2: PRESS SNAP RING (499755602)

    G13200244Courtesy of SUBARU OF AMERICA, INC.
  3. Install it using ST1, ST2 and a press, with a new roller bearing (primary pulley side).
    NOTE: Make adjustment so that the press gets in contact with the center of ST2.

    Preparation tool: 

    ST1: INSTALLER (398177700)

    ST2: BASE (20299AG010)

    G13200245Courtesy of SUBARU OF AMERICA, INC.
  4. Install it with a new snap ring (primary pulley side).
    G13200239Courtesy of SUBARU OF AMERICA, INC.
  5. Install it using ST1, ST2 and a press, with a new roller bearing (secondary pulley side).
    NOTE:
    • Make adjustment so that the press gets in contact with the center of ST2.

    Preparation tool: 

    ST1: INSTALLER (398177700)

    ST2: PRESS SNAP RING (499755602)

    G13200247Courtesy of SUBARU OF AMERICA, INC.
  6. Install it with a new snap ring (secondary pulley side).
    G13200248Courtesy of SUBARU OF AMERICA, INC.
  7. Using new gaskets and new O-rings, install the plugs.
    CAUTION:
    • Before installing O-rings, apply sufficient amount of CVTF to avoid damage and deformation.
    • Use SUBARU genuine CVTF.
    • Be careful not to incorrectly install or fail to install O-rings and other such parts.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.