LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 126 (Engine Mechanical - 4.8L, 5.3L, 6.0L And 6.2L (2 Of 5)) >> On-Vehicle Repair Instructions (1 Of 2) >> Cylinder Head Replacement - Right Side >> Installation Procedure

Installation Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
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:
  • 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).
    Fig 1: Identifying Cylinder Head Locating Pins Installation Position
    GM63235Courtesy of GENERAL MOTORS CORP.
  1. Clean the engine block cylinder head bolt holes, if required. Thread repair tool J 42385-107, found in J 42385-200  may be used to clean the threads of old threadlocking material. See Special Tools .
  2. 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 (a) 8.3 mm (0.327 in).
    5. Fig 2: View Of Cylinder Head Gasket & Locating Pins
    GM1658157Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: 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 (217) onto the locating pins.
    6. Fig 3: View Of Cylinder Head & Bolts
    GM1658156Courtesy of GENERAL MOTORS CORP.
  6. Install the cylinder head (218) onto the locating pins.
  7. Install the NEW cylinder head bolts (220, 221).
    8. Fig 4: Cylinder Head Bolt Tightening Sequence
    GM260150Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  8. Tighten the cylinder head bolts.

    Tighten: 

    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  . See Special Tools .
    3. Tighten the M11 cylinder head bolts (1-10 ) a final pass to 70 degrees in sequence using J 45059  . See Special Tools .
    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: View Of Battery Cable Terminals & Stud
    GM1699543Courtesy of GENERAL MOTORS CORP.
  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.

    Tighten:  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 .
  14. Install the coolant air bleed pipe. Refer to Coolant Air Bleed Pipe Assembly Replacement (RPOs LC9/LY5/LMG/L76/L92) or Coolant Air Bleed Pipe Assembly Replacement (RPOs LY2/LY6) .
  15. Install the intake manifold. Refer to Intake Manifold Replacement (RPOs LC9/LMG/LY5/L76/L92)  or Intake Manifold Replacement (RPOs LY2/LY6) .
  16. Install the oil level indicator. Refer to Oil Level Indicator and Tube Replacement .
scientia non olet · About LEMON Manuals