LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 428 (Engine Mechanical - 8.1L V8) >> Removal & Installation >> Cylinder Head (Right Side) >> Installation

Cylinder Head (Right Side): Installation

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Suburban, and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Do not reuse a cylinder head gasket once the initial clamping loads are applied. The initial tightening sequence procedure of the cylinder head bolts compresses the cylinder head gasket. If any bolt must be loosened once the initial sequence is started, cylinder head gasket must be replaced. Failure to replace cylinder head gasket can lead to cylinder head bolt breakage or cylinder head gasket failure. A broken cylinder head bolt or failed cylinder head gasket can lead to extensive engine damage.
NOTE: Ensure threaded holes in engine block are clean and not damaged. Do not use sealer on any engines that use a composition type gasket. Align cylinder head gasket locating mark to face up. Ensure that head gasket tabs are located over cylinders No. 1 and 2 for correct installation.
  1. Place NEW cylinder head gasket into position.
  2. Install cylinder head.
    3. NOTE: Do not reuse the cylinder head bolts. NEW cylinder head bolts must be used. The cylinder head bolts are torque-to-yield bolts and cannot be reused once the initial torque is applied. During the initial torque of the cylinder head bolt, the cylinder head bolt is stretched to achieve proper clamp load. Proper clamp load will not be achieved if a used cylinder head bolt is torqued again. A stretched cylinder head bolt can also break when torqued. Failure to replace the used cylinder head bolts with NEW cylinder head bolts can lead to improper clamp loads and extensive engine damage.
    NOTE: The sealer must be applied to a minimum of 8 threads starting at the point of the cylinder head bolt.
  3. If not pre-applied to the new cylinder heads bolts, apply Sealant (12346004) to cylinder head bolts.
  4. Install cylinder head bolts No. 1, 2 and 3. See Fig 1.
    5. NOTE: The cylinder head bolt tightening sequence must be followed. The final angle tightening sequence of the cylinder head bolts varies depending on the length of the cylinder head bolt. Failure to angle tighten the specific length bolt the proper number of degrees can lead to cylinder head bolt failure or improper clamping load of the cylinder head gasket. Cylinder head bolt or cylinder head gasket failure can lead to extensive engine damage.
    NOTE: The long bolts are used in locations 1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16, and 17. The medium length bolts are used in locations 15 and 18. The short bolts are used in locations 4, 5, 12, and 13. See Figure.
  5. Tighten cylinder head bolts a first pass, in sequence to specification. Tighten the cylinder head bolts a second pass, in sequence to specification. See Figure and TORQUE SPECIFICATIONS , plus an additional 120 degrees using the Torque Angle Meter (J-36660-A). Tighten bolts (1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16 & 17) an additional 60 degrees, bolts (15 & 18) an additional 45 degrees, and bolts (4, 5, 12 & 13) an additional 30 degrees a final pass using the torque angle meter.
  6. Install exhaust manifold. See EXHAUST MANIFOLD (LEFT & RIGHT SIDE) .
  7. Install water crossover.
  8. Install heater hose bracket and bolts to cylinder head. Tighten heater hose bracket bolts to specification. See TORQUE SPECIFICATIONS .
  9. Install heater inlet and outlet hoses to hose bracket.
  10. Install ECT sensor bracket and bolt. Tighten ECT sensor bracket bolt to specification. See TORQUE SPECIFICATIONS .
  11. Apply Sealant GN (PN 12346004) to threads of the ECT sensor.
  12. Install ECT sensor to cylinder head. Tighten ECT sensor to specification. See TORQUE SPECIFICATIONS .
  13. Install ECT sensor clip to bracket.
  14. Install valve rocker arms and push rods. See VALVE ROCKER ARM & PUSH ROD .
  15. Install intake manifold. See INTAKE MANIFOLD .
  16. Fill and bleed cooling system. See COOLING SYSTEM BLEEDING .
Fig 1: Locating Cylinder Head Bolts No. 1, 2 & 3 (Right Side)
G00277895Courtesy of GENERAL MOTORS CORP.
scientia non olet · About LEMON Manuals