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Timing Chain (FA20): Installation

  1. Installation of timing chain (bank 2 side)
    CAUTION: Be careful that the foreign matter is not into or onto the assembled component during installation.
    NOTE: Apply new engine oil to all component parts of the timing chain.
    1. Attach the SST to the crankshaft.

      SST 18252AA000

    2. Move the link plate in the direction of the arrow and press in the plunger.
      G12586509Courtesy of SUBARU OF AMERICA, INC.
    3. Insert a wire (with a diameter of approx. 1. 3mm {0. 05 in}) into the stopper pin hole to secure the plunger.
      NOTE: If the stopper pin hole on the link plate and the stopper pin hole on the chain tensioner are not aligned, check that the first notch of plunger rack is engaged with the stopper tooth. If not engaged, retract the plunger a little so that the first notch of plunger rack is engaged with the stopper tooth.
      G12586510Courtesy of SUBARU OF AMERICA, INC.
    4. Align the alignment marks of intake cam sprocket LH and exhaust cam sprocket LH to the positions as shown in the figure.
      CAUTION:
      • Pay attention when performing the work, since the SST comes off easily.
      • To prevent valve damage, turn the intake cam sprocket LH and exhaust cam sprocket LH only within the range of zero-lift (in range where they can be turned lightly by hand).
      G12586511Courtesy of SUBARU OF AMERICA, INC.
    5. Align the mark plate (blue) of timing chain to the alignment mark position of crankshaft sprocket.
      G12586512Courtesy of SUBARU OF AMERICA, INC.
    6. Align the mark plate (pink) of timing chain to the timing mark position of intake cam sprocket LH.
    7. Align the mark plate (pink) of timing chain to the timing mark position of exhaust cam sprocket LH.
    8. Apply new engine oil to the sliding surface of chain guide bolt.
    9. Install the chain guide with the bolt.

      Standard value: T=6. 4N. m {65kgf. cm} {4. 7ft. lbf}

    10. Attach a new O-ring on the cylinder block (bank 2 side).
      G11258465Courtesy of SUBARU OF AMERICA, INC.
    11. Install the chain tension lever.
      G11258464Courtesy of SUBARU OF AMERICA, INC.
    12. Install chain tensioner No. 2 with the two bolts.

      Standard value: T=6. 4N. m {65kgf. cm} {4. 7ft. lbf}

    13. Make sure that the timing chain is properly installed.
      G12586515Courtesy of SUBARU OF AMERICA, INC.
      1. The mark plate (blue) of timing chain is aligned to the alignment mark position of crankshaft sprocket.
      2. The mark plate (pink) of timing chain is aligned to the timing mark position of intake cam sprocket LH.
      3. The mark (pink) of timing chain is aligned to the timing mark position of exhaust cam sprocket LH.
    14. Pull out the wire from chain tensioner No. 2.
      NOTE: Push up the chain tension lever and press in the plunger of chain tensioner No. 2 to pull out the wire.
    15. Attach the SST to the crankshaft.

      SST 18252AA000

    16. Turn the crankshaft clockwise and make sure that there are no abnormal conditions.
      CAUTION: Always make sure to perform this confirmation.
    17. Remove the SST from the crankshaft.
  2. Timing chain installation (bank 1 side)
    CAUTION: Be careful that foreign matter is not into or onto the assembled component during installation.
    NOTE: Apply new engine oil to all component parts of the timing chain.
    1. Attach the SST to the crankshaft.

      SST 18252AA000

    2. Move the link plate in the direction of the arrow and press in the plunger.
      G12586516Courtesy of SUBARU OF AMERICA, INC.
    3. Insert a 2. 5 mm dia. hex wrench into the stopper pin hole to secure the plunger.
      G12586517Courtesy of SUBARU OF AMERICA, INC.
      NOTE: If the stopper pin hole on the link plate and the stopper pin hole on the chain tensioner are not aligned, check that the first notch of plunger rack is engaged with the stopper tooth. If not engaged, retract the plunger a little so that the first notch of plunger rack is engaged with the stopper tooth.
    4. Turn the crankshaft using the SST to align the alignment marks of crankshaft sprocket, intake cam sprocket LH and exhaust cam sprocket LH as shown in the figure.
      G12586518Courtesy of SUBARU OF AMERICA, INC.
      NOTE: If the marks are aligned to the positions as shown in the figure, the crankshaft key faces downward.
      G12586519Courtesy of SUBARU OF AMERICA, INC.
    5. Align the alignment marks of intake cam sprocket RH and exhaust cam sprocket RH to the positions as shown in the figure.
      CAUTION: To prevent valve damage, turn the intake cam sprocket RH and exhaust cam sprocket RH only within the range of zero-lift (in range where they can be turned lightly by hand).
      G12586520Courtesy of SUBARU OF AMERICA, INC.
    6. Align the mark plate (blue) of timing chain to the alignment mark position of crankshaft sprocket.
    7. Align the mark plate (pink) of timing chain to the timing mark position of intake cam sprocket RH.
    8. Align the mark plate (pink) of timing chain to the timing mark position of exhaust cam sprocket RH.
    9. Apply new engine oil to the sliding surface of chain guide bolt.
    10. Install the chain guide with the bolt.

      Standard value: T=6. 4N. m {65kgf. cm} {4. 7ft. lbf}

    11. Install the chain tension lever.
      G11258460Courtesy of SUBARU OF AMERICA, INC.
    12. Install chain tensioner No. 1 with the two bolts.

      Standard value: T=6. 4N. m {65kgf. cm} {4. 7ft. lbf}

    13. Make sure that the timing chain is properly installed.
      G12586522Courtesy of SUBARU OF AMERICA, INC.
      1. The mark plate (blue) of timing chain is aligned to the alignment mark position of crankshaft sprocket.
      2. The mark plate (pink) of timing chain is aligned to the timing mark position of intake cam sprocket RH.
      3. The mark plate (pink) of timing chain is aligned to the timing mark position of exhaust cam sprocket RH.
    14. Pull out the hexagon wrench from chain tensioner No. 1.
    15. Attach the SST to the crankshaft.

      SST 18252AA000

    16. Turn the crankshaft clockwise and make sure that there are no abnormal conditions.
      CAUTION: Always make sure to perform this confirmation.
    17. Remove the SST from the crankshaft.
  3. Chain cover installation (Refer to INSTALLATION )
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