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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 26 (Engine Mechanical - 4.8L, 5.3L, And 6.0L (3 Of 4)) >> Off-Vehicle Repair Instructions (2 Of 3) >> Valve Rocker Arm Cover Cleaning and Inspection

Valve Rocker Arm Cover Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Identifying Ignition Coils
    GM824413Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • Do not use the valve rocker arm cover gasket again. Install a NEW gasket during assembly.
    • Remove the ignition coils before cleaning the cover in solvent. Do not submerge the ignition coils in solvent.
  1. Remove the ignition coil and bracket assembly, bolts, and wire harness from the left cover, if required.
    2. Fig 2: Ignition Coil Bracket Studs From Rocker Arm Cover
    GM824414Courtesy of GENERAL MOTORS CORP.
  2. Remove the ignition coil and bracket assembly, bolts, and wire harness from the right cover, if required.
    3. Fig 3: Oil Fill Cap & Oil Fill Tube
    GM824416Courtesy of GENERAL MOTORS CORP.
  3. Inspect the tube for a loose fit or damage.
  4. Remove the oil fill cap and tube from the right cover.
    5. Fig 4: View Of Valve Rocker Arm Cover Gasket
    GM1272820Courtesy of GENERAL MOTORS CORP.
  5. Remove the gaskets (504) from the covers.
  6. Remove the cover mounting bolts, with grommets.

    Cover mounting bolts and grommets that are not damaged may be used again during assembly.

  7. Clean the covers in solvent.
    8. Fig 5: View Of Valve Rocker Arm Cover
    GM1277108Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
  8. Dry the covers with compressed air.
  9. Inspect the ventilation system passages for restrictions.
  10. Inspect the gasket grooves for damage.
  11. Inspect the coil bracket threaded bolt holes for damage or debris.
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