Subaru Car 1998-05

Valve Lash (Clearance) Adjustment 2

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3.0L Engine




NOTE
The valve adjustment should be performed while the engine is cold.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Adjustment should be performed when engine is cold.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Engine undercover
     

  6.  
  7. To inspect the right hand side perform remove the following:

    Drive belt
     
    Power steering hose from the bracket
     
    Power steering pump bracket bolts and place the pump assembly on the right side wheel apron with the lines still attached
     
    Fuel pipe protector from the right hand side
     
    Fuel injector connections
     
    Front Oxygen Sensor (O2S) connector
     
    Oil pressure switch connector
     
    Ignition coils
     
    Valve cover on the right hand side
     

  8.  
  9. To inspect the left hand side perform remove the following:

    Battery
     
    Window washer motor connectors front and rear
     
    Rear gate glass washer hose from the washer motor
     
    Washer tank mounting bolts and secure out of the way
     
    Positive Crankcase Ventilation (PCV) and blow-by hose from the left hand rocker cover
     
    Fuel pipe protector from the left hand side
     
    Fuel injector connections
     
    Front O2S connector
     
    Ignition coils
     
    Valve cover on the left hand side
     

  10.  
  11. Using crankshaft socket tool ST 18252AA000, turn the crankshaft clockwise. Adjust the camshaft position so the camshaft lobe is perpendicular to the shim as illustrated.
  12.  
  13. Check the valve clearance:

    Intake valve: 0.0063-0.0095 in. (0.16-0.24mm).
     
    Exhaust valve: 0.0078-0.0118 in. (0.20-0.25mm).
     

  14.  
  15. If any valve needs adjustment, perform the following:
    1. Record each valve measurement after it has been measured.
    2.  
    3. Using shim replacer tool ST 18329AA000, remove the shim from the lifter.
    4.  
    5. Rotate the notch of the valve lifter outwards by 45 degrees.
    6.  
    7. Adjust the shim replacer notch to the valve lifter and set it as illustrated. Make sure when setting the replacer, the edge does not touch the shim.
    8.  
    9. Tighten boltAB
    10.  
    11. Use tweezers to remove the shim. A magnet may be used as well to remove the shim without dropping it.
    12.  
    13. Use a micrometer to measure the shim.
    14.  

  16.  
  17. Measure the shim thickness using a micrometer.
  18.  
  19. Using the table supplied, select a suitable shim using measured valve clearance and shim thickness.
  20.  
  21. Install the replacement shim to the lifter.
  22.  
  23. After all shims have been adjusted, inspect the valve clearances again.
  24.  
  25. After completion, install all removed components.
  26.  


    Click image to see an enlarged view

    Fig. Turn the crankshaft clockwise. Adjust the camshaft position so the camshaft lobe is perpendicular to the shim -3.0L engine



    Click image to see an enlarged view

    Fig. Use shim replacer tool ST 18329AA000 to remove the shim from the lifter -3.0L engine



    Click image to see an enlarged view

    Fig. Rotate the notch of the valve lifter outwards by 45 degrees-3.0L engine



    Click image to see an enlarged view

    Fig. Adjust the shim replacer notch to the valve lifter and set it as shown-3.0L engine



    Click image to see an enlarged view

    Fig. Tighten bolt A on the tool and attach it to the cylinder head, then tighten bolt B and insert the valve lifter-3.0L engine



    Click image to see an enlarged view

    Fig. Use this table to help you select a suitable shim-3.0L engines



    Click image to see an enlarged view

    Fig. Valve adjusting shim chart (1 of 2)-3.0L engines



    Click image to see an enlarged view

    Fig. Valve adjusting shim chart (2 of 2)-3.0L engines



NOTE
The valve adjustment should be performed while the engine is cold.

  1. Remove or disconnect the following:

    Negative battery cable
     
    Engine undercover
     

  2.  
  3. To inspect the right hand side perform remove the following:

    Drive belt
     
    Power steering hose from the bracket
     
    Power steering pump bracket bolts and place the pump assembly on the right side wheel apron with the lines still attached
     
    Fuel pipe protector from the right hand side
     
    Fuel injector connections
     
    Front Oxygen Sensor (O 2 S) connector
     
    Oil pressure switch connector
     
    Ignition coils
     
    Valve cover on the right hand side
     

  4.  
  5. To inspect the left hand side perform remove the following:

    Battery
     
    Window washer motor connectors front and rear
     
    Rear gate glass washer hose from the washer motor
     
    Washer tank mounting bolts and secure out of the way
     
    Positive Crankcase Ventilation (PCV) and blow-by hose from the left hand rocker cover
     
    Fuel pipe protector from the left hand side
     
    Fuel injector connections
     
    Front O 2 S connector
     
    Ignition coils
     
    Valve cover on the left hand side
     

  6.  
  7. Using crankshaft socket tool ST 18252AA000, turn the crankshaft clockwise. Adjust the camshaft position so the camshaft lobe is perpendicular to the shim as illustrated.

    Click image to see an enlarged view

    Fig. Turn the crankshaft clockwise. Adjust the camshaft position so the camshaft lobe is perpendicular to the shim -2001-2004 3.0L engine



    Click image to see an enlarged view

    Fig. Shim replacer tool is required to adjust the valves-2.0L engine and 2001-2004 3.0L engine



    Click image to see an enlarged view

    Fig. Rotate the notch of the valve lifter outwards 45 degrees-2.0L engine and 2001-2004 3.0L engine



    Click image to see an enlarged view

    Fig. Adjust the shim replacer tool notch to the lifter and set it-2.0L engine and 2001-2004 3.0L engine



    Click image to see an enlarged view

    Fig. Location of bolts -A- and -B- on the shim replacer tool-2.0L engine and 2001-2004 3.0L engine

  8.  
  9. Check the valve clearance:

    Intake valve: 0.0063-0.0095 in. (0.16-0.24mm).
     
    Exhaust valve: 0.0078-0.0118 in. (0.20-0.25mm).
     

  10.  
  11. If any valve needs adjustment, perform the following:
    1. Record each valve measurement after it has been measured.
    2.  
    3. Using shim replacer tool ST 18329AA000, remove the shim from the lifter.
    4.  
    5. Rotate the notch of the valve lifter outwards by 45 degrees.
    6.  
    7. Adjust the shim replacer notch to the valve lifter and set it as illustrated. Make sure when setting the replacer, the edge does not touch the shim.
    8.  
    9. Tighten bolt A on the tool and attach it to the cylinder head, then tighten bolt B and insert the valve lifter. Refer to the accompanying illustration.
    10.  
    11. Use tweezers to remove the shim. A magnet may be used as well to remove the shim without dropping it.
    12.  
    13. Use a micrometer to measure the shim.
    14.  

  12.  
  13. Measure the shim thickness using a micrometer.
  14.  
  15. Using the table supplied, select a suitable shim using measured valve clearance and shim thickness.
  16.  
  17. Install the replacement shim to the lifter.
  18.  
  19. After all shims have been adjusted, inspect the valve clearances again.
  20.  
  21. After completion, install all removed components.

    Click image to see an enlarged view

    Fig. Use this table to help you select a suitable shim-2001-2004 3.0L engine



    Click image to see an enlarged view

    Fig. Valve adjusting shim chart (1 of 2)-2001-2004 3.0L engine



    Click image to see an enlarged view

    Fig. Valve adjusting shim chart (2 of 2)-2001-2004 3.0L engine

  22.  


NOTE
The valve adjustment should be performed while the engine is cold.

  1. Raise and support the vehicle safely.
  2.  
  3. Remove the under cover.
  4.  
  5. Lower the vehicle.
  6.  
  7. Remove the collector cover.
  8.  
  9. Disconnect the negative battery cable.
  10.  
  11. On the right side, remove the air intake duct and air cleaner case. Remove the fuel tank protector. Disconnect the oil pressure switch electrical connector. Remove the ignition coil.
  12.  
  13. On the left side, remove the battery and battery carrier. Disconnect the PCV hose from the rocker cover. Remove the ignition coil.
  14.  
  15. Remove the rocker cover retaining bolts. Remove the rocker covers from the engine.
  16.  
  17. Rotate the crankshaft clockwise until the cam is set in position, see illustration.

    Click image to see an enlarged view

    Fig. Valve adjustment crankshaft positioning-2005 3.0L engine

  18.  
  19. Using a feeler gauge measure and record the clearance of the intake and exhaust valve.
    NOTE
    Measure it within the range of +/- 30 degrees from the specified position, shown in the illustration. Measure it in the low cam for the intake side. Insert the feeler gauge in a horizontally as possible with respect to the valve lifter.

  20.  
  21. Further turn the crankshaft pulley clockwise and then measure and record the valve clearance again.
  22.  
  23. If adjustment is required, remove the camshafts.
  24.  
  25. Remove and measure the thickness of the valve lifter. Select a suitable shim, using the shim selection chart.
  26.  
  27. Install the replacement shim to the lifter.
  28.  
  29. After all shims have been adjusted, inspect the valve clearances again.
  30.  
  31. After completion, install all removed components.

    Click image to see an enlarged view

    Fig. Use this table to help you select a suitable exhaust valve shim-2005 3.0L engine



    Click image to see an enlarged view

    Fig. Use this table to help you select a suitable intake valve shim-2005 3.0L engine



    Click image to see an enlarged view

    Fig. Exhaust valve adjusting shim chart-2005 3.0L engine



    Click image to see an enlarged view

    Fig. Intake valve adjusting shim chart-2005 3.0L engine

  32.  

3.3L Engine



This engine is equipped with hydraulic lifter assemblies which adjust automatically.

 
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