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Installation Procedure

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    Fig 1: Checking Cylinder Head Bolt Holes And Locating Pins
    GM832969Courtesy 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
    GM3632541Courtesy of GENERAL MOTORS COMPANY
    NOTE:

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

  5. Install the NEW cylinder head gasket (1) onto the locating pins.
    6. Fig 3: Cylinder Head And Bolts
    GM3632495Courtesy of GENERAL MOTORS COMPANY
  6. Install the cylinder head (218) onto the locating pins.
  7. Install the NEW cylinder head bolts (1, 2).
    8. Fig 4: Cylinder Head Bolts Tightening Sequence
    GM832971Courtesy 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 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: Engine Ground Strap And Bolt
    GM1699550Courtesy of GENERAL MOTORS COMPANY
  9. Position the ground strap to the cowl at the rear of the left cylinder head.
  10. Install the engine ground strap bolt and tighten the bolt to 16 N.m (12 lb ft).
  11. Install the pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  12. Install the left exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side (L96) .
  13. Install the coolant air bleed pipe. Refer to Engine Coolant Air Bleed Pipe Replacement (L96) .
  14. Install the intake manifold. Refer to Intake Manifold Replacement .
  15. Install the generator and power steering pump bracket. Refer to Generator and Power Steering Pump Bracket Replacement (L96) .
  16. Install the generator. Refer to Generator Replacement (L96) .
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