LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> CVT Transaxle System >> Transmission Case >> Assembly
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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.
    NOTE: For the plug (a), fill the CVTF, and then tighten the plug using a new gasket.

    Tightening torque: 

    T1: 13 N.m (1.3 kgf-m, 9.6 ft-lb)

    T2: 25 N.m (2.5 kgf-m, 18.4 ft-lb)

    T3: 50 N.m (5.1 kgf-m, 36.9 ft-lb)

    Fig 1: CVTF Bolts Components (With Torque Specification)
    G13864065Courtesy of SUBARU OF AMERICA, INC.
  8. Install the lubrication pipe with a new O-ring.
    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.

    Tightening torque: 

    16 N.m (1.6 kgf-m, 11.8 ft-lb)

    G13200236Courtesy of SUBARU OF AMERICA, INC.