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Installation Procedure

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    Fig 1: Checking Cylinder Head Bolt Holes And Locating Pins
    GM63235Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    Wear safety glasses in order to avoid eye damage.

    CAUTION:

    Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.

    NOTE:

    If installing a new cylinder head it is necessary to install a new engine coolant air bleed plug into the rear coolant passage of the cylinder head. Refer to Cylinder Head Assemble .

    NOTE:
    • Do not reuse the cylinder head bolts. Install NEW cylinder head bolts during assembly.
    • Do not use any type of sealant on the cylinder head gasket (unless specified).
  1. Clean the engine block cylinder head bolt holes, if required. Thread repair tool J 42385-107, found in J 42385-200  common thread repair kit may be used to clean the threads of old threadlocking material.
  2. Spray cleaner or equivalent into the hole. Refer to Adhesives, Fluids, Lubricants, and Sealers .
  3. Clean the cylinder head bolt holes with compressed air.
  4. Check the cylinder head locating pins for proper installation (a) 8.3 mm (0.327 in).
    5. Fig 2: Cylinder Head Gasket
    GM3632942Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    When properly installed, with FRONT on the right side, the tab on the cylinder head gasket should be located right of center.

  5. Install the NEW cylinder head gasket (1) onto the locating pins.
    6. Fig 3: Cylinder Head And Bolts
    GM3632859Courtesy of GENERAL MOTORS COMPANY
  6. Install the cylinder head (3) onto the locating pins.
  7. Install the NEW cylinder head bolts (1, 2).
    8. Fig 4: Cylinder Head Bolt Tightening Sequence
    GM260150Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  8. Tighten the cylinder head bolts.
    1. Tighten the M11 cylinder head bolts (1-10) a first pass in sequence to 30 N.m (22 lb ft).
    2. Tighten the M11 cylinder head bolts (1-10) a second pass in sequence to 90 degrees using J 45059  angle meter.
    3. Tighten the M11 cylinder head bolts (1-10) a final pass to 70 degrees in sequence using J 45059  angle meter.
    4. Tighten the M8 cylinder head bolts (11-15) to 30 N.m (22 lb ft). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.
    9. Fig 5: Negative Battery Cable Terminal, Engine Harness Terminal And Stud
    GM1699543Courtesy of GENERAL MOTORS COMPANY
  9. Ensure that the engine harness terminal (3) is positioned behind the negative battery cable terminal (2).
  10. Position the negative battery cable terminal (2) to the cylinder head.
  11. Install the negative battery cable stud (1) to the front of the right cylinder head and tighten the stud to 25 N.m (18 lb ft).
  12. Install the pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  13. Install the right exhaust manifold. Refer to Exhaust Manifold Replacement - Right Side (L96) .
  14. Install the coolant air bleed pipe. Refer to Engine Coolant Air Bleed Pipe Replacement (L96) .
  15. Install the intake manifold. Refer to Intake Manifold Replacement .
  16. Install the oil level indicator. Refer to Oil Level Indicator Tube Replacement .
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