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Home >> Saturn >> 2010 >> Sky Red Line, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Mechanical - 2.4L - Repair Instructions - Off Vehicle (1 Of 2)) >> Cylinder Head Assemble (LAP, LAT, LE5, LE8, LE9) >> Assembly Procedure

Assembly Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Identifying Cylinder Head Plugs
    GM2128104Courtesy of GENERAL MOTORS CORP.
    CAUTION: In order to avoid damage, install the spark plugs after the cylinder head has been installed on the engine.
  1. Install NEW cylinder head plugs (1). Coat the plugs with sealer. Refer to Adhesives, Fluids, Lubricants, and Sealers .
  2. Inspect the valve springs for the following conditions:
    • Expanded height
    • Unparallel spring ends
    • Spring tension using EN-9666:  tester
    • Any distorted springs should be replaced
    3. Fig 2: View of Valve Runout
    GM2146353Courtesy of GENERAL MOTORS CORP.
  3. Inspect the valves and the valve seats. Refer to Valve and Seat Grinding .
    4. Fig 3: Identifying Valves
    GM2148531Courtesy of GENERAL MOTORS CORP.
  4. Install the valves (1). Replace any valves, if required.
    5. Fig 4: Identifying Valve Seals
    GM2148530Courtesy of GENERAL MOTORS CORP.
    NOTE: Always use NEW valve stem oil seals when assembling the cylinder head.
  5. Install the new valve seals (1). Fully seat the seals on the valve guides.
    6. Fig 5: View of Valve Springs
    GM2148529Courtesy of GENERAL MOTORS CORP.
  6. Install the springs (1).
    7. Fig 6: View of Valve Keys and Retainer
    GM2148527Courtesy of GENERAL MOTORS CORP.
    WARNING: Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys. Failing to use care may cause personal injury.
    CAUTION: Do not compress the valve springs to less than 24.0 mm (0.943 in). Contact between the valve spring retainer and the valve stem oil seal can cause potential valve stem oil seal damage.
  7. Install the retainers (1).
  8. Using the EN-8062:  compressor and the EN-43963:  compressor (off car), compress the valve spring.
  9. Install the valve keys.
  10. Slowly release the EN-8062:  compressor and the EN-43963:  compressor (off car) from the valve/spring assembly.
  11. Inspect for proper valve key seating.
  12. Install the remaining valves, springs, and other components.
    13. Fig 7: Identifying the Coolant Air Bleed Hose Fitting
    GM2128103Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  13. Install the cylinder head air bleed tube (1) and tighten the tube to 15 N.m (11 lb ft).
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