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Cylinder Head: Installation

WARNING: This page is about a different car, the 2006 Subaru Outback and 2006 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the cylinder head and gaskets on cylinder block.
    CAUTION: Be careful not to scratch the mating surface of cylinder block and cylinder head.
    NOTE: Use a new cylinder head gasket.
    1. Clean the bolt threads and the bolt holes in the cylinder block.
      CAUTION: To avoid erroneous tightening of the bolts, clean out the bolt holes sufficiently by blowing with compressed air to eliminate engine coolant etc.
    2. Apply a sufficient coat of engine oil to the washer and bolt thread.
    3. Tighten all bolts to 40 N.m (4.1 kgf-m, 29.5 ft-lb) in alphabetical order.
    4. Retighten all bolts to 95 N.m (9.7 kgf-m, 70.1 ft-lb) in alphabetical order.
      CAUTION: If the bolt make stick-slip sound during tightening, repeat the procedure from step (1)  . In this case, cylinder head gasket can be reused.
    5. Loosen all the bolts by 180° in the reverse order of installing, and loosen them further by 180°.
    6. Tighten all bolts to 10 N.m (1.0 kgf-m, 7.4 ft-lb) in alphabetical order.
    7. Retighten all bolts to 30 N.m (3.1 kgf-m, 22.1 ft-lb) in alphabetical order.
    8. Retighten all bolts to 60 N.m (6.1 kgf-m, 44.3 ft-lb) in alphabetical order.
    9. Retighten all bolts by 80 - 90° in alphabetical order.
    10. Retighten all bolts by 40 - 45° in alphabetical order.
      CAUTION: The tightening angle of the bolt should not exceed 45°.
    11. Retighten bolts (a) and (b) by 40 - 45°.
      CAUTION: Make sure the total "tightening angle" of steps (10) and (11) does not exceed 90°.
      Fig 1: Tightening Sequence Of Cylinder Head Bolts
      G04997702Courtesy of SUBARU OF AMERICA, INC.
  2. Install the camshaft. < Ref. to INSTALLATION , Camshaft. >
  3. Install the valve rocker assembly. < Ref. to INSTALLATION , Valve Rocker Assembly. >
  4. Install the A/C compressor bracket on cylinder head.
  5. Install the intake manifold.

    < Ref. to INSTALLATION , Intake Manifold. >

  6. Install the cam sprocket. < Ref. to INSTALLATION , Cam Sprocket. >
  7. Install the timing belt. < Ref. to INSTALLATION , Timing Belt. >
  8. Install the timing belt cover.

    < Ref. to INSTALLATION , Timing Belt Cover. >

  9. Install the crank pulley. < Ref. to INSTALLATION , Crank Pulley. >
  10. Install the V-belts. < Ref. to INSTALLATION , V-belt. >
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