2021 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

Oil Pump Chain: Installation

  1. Clean the mating surface of oil pump chain cover and converter case cover.
  2. Press-fit a new oil seal using ST and a press.
    NOTE: Apply CVTF to the press-fitting area.

    Preparation tool: 

    ST: HOUSING BUSHING INSTALLER AND REMOVER (927720000)

    G13200339Courtesy of SUBARU OF AMERICA, INC.
  3. Set the drive sprocket and install the snap ring.
    G13200340Courtesy of SUBARU OF AMERICA, INC.
  4. Place the oil pump chain on drive sprocket.
  5. Place the oil pump chain on driven sprocket and install the driven sprocket to oil pump chain cover.
    G13200341Courtesy of SUBARU OF AMERICA, INC.
  6. Install a new seal ring.
    CAUTION:
    • Before installing seal rings, apply sufficient amount of CVTF to avoid damage and deformation.
    • Use SUBARU genuine CVTF.
  7. Apply liquid gasket seamlessly to the mating surface of oil pump chain cover, and temporarily install it.
    CAUTION: Do not apply liquid gasket at the arrowed hole.

    Liquid gasket: 

    THREE BOND 1215B or equivalent

    G12452590Courtesy of SUBARU OF AMERICA, INC.
  8. Tighten the oil pump chain cover mounting bolts.
    NOTE: There are two types of bolt.

    Tightening torque: 

    24 N.m (2.4 kgf-m, 17.7 ft-lb)

    G12452591Courtesy of SUBARU OF AMERICA, INC.
  9. Install the torque converter. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Torque Converter>INSTALLATION .
  10. Install the transmission body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transmission Assembly>INSTALLATION .
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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.