LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2010 >> Legacy Premium, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Mechanical (H6DO - 3.6L DOHC)) >> Valve Clearance >> Inspection

Valve Clearance: Inspection

WARNING: This page is about a different variant/trim than selected.
CAUTION: If engine oil is spilt onto the exhaust pipe, wipe it off with cloth to avoid emission of smoke or causing a fire.
NOTE: Inspection of valve clearance should be performed while engine is cold.
  1. Remove the collector cover.
    NOTE: Follow these procedures for removal of the collector cover.
    1. Lift up the rear side holding two positions (A).
    2. Lift up the front side holding two positions (B) while moving it in the forward direction of the vehicle.
    Fig 1: Locating Front And Rear Side Holding Position
    G06649693Courtesy of SUBARU OF AMERICA, INC.
  2. Disconnect the ground cable from battery.
  3. Lift up the vehicle.
  4. Remove the under cover. Ref. to REMOVAL , Front Under Cover.
  5. Lower the vehicle.
  6. When inspecting #1, #3 and #5 cylinders
    1. Remove the air intake duct, air cleaner case and air intake boot assembly. Ref. to REMOVAL , Air Intake Duct. Ref. to REMOVAL , Air Cleaner Case. Ref. to REMOVAL , Air Intake Boot.
    2. Remove the fuel pipe protector (RH).
      Fig 2: Locating Fuel Pipe Protector (RH) Bolts
      G05018455Courtesy of SUBARU OF AMERICA, INC.
    3. Disconnect the connector of oil pressure switch.
    4. Remove the ignition coil. Ref. to REMOVAL , Ignition Coil.
    5. Remove the rocker cover (RH). Ref. to REMOVAL , Camshaft.
  7. When inspecting #2, #4 and #6 cylinders
    1. Disconnect the battery cable, and then remove the battery and battery carrier. Ref. to REMOVAL , Battery.
    2. Remove two fixing clips on the fuel pipe protector (LH).
      Fig 3: Locating Fuel Pipe Protector (LH) Clips
      G06651188Courtesy of SUBARU OF AMERICA, INC.
    3. Generator connector
    4. Generator terminal B
    5. Remove the harness cover from collector cover bracket.
    6. A/C compressor solenoid connector
    7. Flow sensor connector
      Fig 4: Identifying Generator Connector, Terminal B, Harness Cover, Flow Sensor Connector
      G06649698Courtesy of SUBARU OF AMERICA, INC.
    8. Slide the harness and connector to the battery side.
    9. Disconnect the PCV hose and blow-by hose from the rocker cover (LH).
      Fig 5: Identifying PCV Hose And Blow-By Hose
      G05018663Courtesy of SUBARU OF AMERICA, INC.
    10. Remove the fuel pipe protector (LH).
      Fig 6: Locating Fuel Pipe Protector (LH) Bolts
      G06651195Courtesy of SUBARU OF AMERICA, INC.
    11. Remove the ignition coil. Ref. to REMOVAL , Ignition Coil.
    12. Remove the rocker cover (LH). Ref. to REMOVAL , Camshaft.
  8. Turn the crankshaft clockwise until the camshaft is set to position shown in the figure.
    Fig 7: Position Of Turning Crankshaft
    G06649701Courtesy of SUBARU OF AMERICA, INC.
  9. Measure the clearance of intake valve and exhaust valve using thickness gauge (A).
    NOTE:
    • Measure it within the range of ±30° from specified position shown in the figure.
    • Insert a thickness gauge in a direction as horizontal as possible with respect to the valve lifter.

    Valve clearance (inspection value): 

    Intake 

    0.20 +0.04 -0.06  mm (0.0079 +0.0016 -0.0024  in) 

    Exhaust 

    0.35±0.05 mm (0.0138±0.0020 in) 

    • If the measured value is not within specification, take notes of the value in order to adjust the valve clearance later on.
    Fig 8: Measuring Clearance Of Intake Valve And Exhaust Valve Using Thickness Gauge
    G05018666Courtesy of SUBARU OF AMERICA, INC.
  10. If necessary, adjust the valve clearance. Ref. to ADJUSTMENT , Valve Clearance.
  11. Further turn the crank pulley clockwise and then measure the valve clearances again.
  12. After inspection, install the related parts in the reverse order of removal. Ref. to INSTALLATION , Camshaft.
scientia non olet · About LEMON Manuals