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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 855 (Engine Mechanical - 4.8L, 5.3L & 6.0L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Cylinder Head Replacement - Left >> Installation Procedure

Installation Procedure

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CAUTION: Wear safety glasses in order to avoid eye damage.
NOTE: 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.

Important: 

  1. Clean the engine block cylinder head bolt holes, if required.
    Fig 1: Installing Cylinder Head Bolts During Assembly (Left)
    G02116407Courtesy of GENERAL MOTORS CORP.

    Thread repair tool J 42385-107, found in J 42385-200  may be used to clean the threads of old thread locking material.

  2. Use spray cleaner GM P/N 12346139, P/N 12377981, (Canadian P/N 10953463) or equivalent into the hole.
  3. Clean the cylinder head bolt holes with compressed air.
  4. Check the cylinder head locating pins for proper installation, location (a) 8.3 mm (0.327 in).
  5. When properly installed, with FRONT on the left side, the tab on the cylinder head gasket should be located left of center or closer to the front of the engine.
    Fig 2: When Properly Installed, With Front On Left Side, Tab On Cylinder Head Gasket Should Be Located Left Of Center Or Closer To Front Of Engine (Left)
    G02116408Courtesy of GENERAL MOTORS CORP.
  6. Install the NEW cylinder head gasket.
    Fig 3: Installing Cylinder Head Gasket (Left)
    G02116409Courtesy of GENERAL MOTORS CORP.
  7. Install the cylinder head.
    Fig 4: Installing Cylinder Head (Left)
    G02116410Courtesy of GENERAL MOTORS CORP.
  8. Install NEW cylinder head bolts (1, 2, 3).
    Fig 5: Installing Cylinder Head Bolts (Left)
    G02116411Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  9. Tighten the cylinder head bolts.

    Tighten 

    1. 9.1. Tighten the M11 bolts a first pass in sequence to 30 N.m (22 lb ft).
    2. 9.2. Tighten the M11 bolts a second pass in sequence to 90 degrees using J 36660-A  .
    3. 9.3. Tighten the M11 bolts (1, 2, 3, 4, 5, 6, 7, 8) to 90 degrees and the M11 bolts (9 and 10) to 50 degrees a final pass in sequence using J 36660-A  .
    4. 9.4. Tighten the M8 bolts (11, 12, 13, 14, 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.
    Fig 6: Tightening Cylinder Head Bolts (Left)
    G02116412Courtesy of GENERAL MOTORS CORP.
  10. Install the pushrod. Refer to VALVE ROCKER ARM AND PUSH ROD REPLACEMENT  .
  11. Install the left exhaust manifold. Refer to EXHAUST MANIFOLD REPLACEMENT -- LEFT (4.8L, 5.3L, AND 6.0L ENGINES) in Engine Exhaust.
  12. Install the coolant air bleed pipe. Refer to COOLANT AIR BLEED PIPE ASSEMBLY REPLACEMENT (4.8L, 5.3L, AND 6.0L ENGINES) in Engine Cooling.
  13. Install the intake manifold. Refer to Intake Manifold Installation .
  14. Install the generator bracket. Refer to GENERATOR (4.8L, 5.3L & 6.0L ENGINES) in Engine Electrical.
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