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Home >> Buick >> 2008 >> Allure CXL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 5.3L) >> Repair Instructions - Off Vehicle >> Valve Lifter Oil Manifold Cleaning and Inspection

Valve Lifter Oil Manifold Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Identifying Manifold Lift Caution
    GM1536553Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • Do not allow dirt or debris to enter the oil passages of the manifold. Plug, as required.
    • Do not disassemble the electrical components from the manifold.
    • Do not submerge the electrical components in cleaning solvent.
    • Do not use the manifold exterior gasket again. Remove the exterior gasket and install a NEW service gasket during assembly.
  1. Do not lift the manifold assembly by the electrical lead frame.
    2. Fig 2: View Of Oil Pressure Sensor, Washer & Valve Lifter Oil Filter
    GM1402008Courtesy of GENERAL MOTORS CORP.
  2. Remove the oil pressure sensor (706) and washer (707).
  3. Remove the oil screen (452) with O-ring (454).
    4. CAUTION: Refer to Safety Glasses Caution .
  4. Clean the manifold with compressed air.
    5. Fig 3: View Of Electrical Solenoids
    GM1402153Courtesy of GENERAL MOTORS CORP.
  5. Inspect for loose electrical solenoids (1-4) or loose or missing bolts.
  6. Inspect for damage to the electrical lead frame (5).
  7. Inspect for a damaged electrical connector, for bent or corroded pins.
    8. Fig 4: Inspecting Manifold For Seal & Gasket Leaks
    GM1402154Courtesy of GENERAL MOTORS CORP.
  8. Inspect for damaged interior sealing gaskets (1-8). If the interior sealing gaskets are damaged, the manifold must be replaced as an assembly.
  9. Inspect for a damaged exterior sealing gasket (9) or scored gasket surfaces.
  10. Inspect for debris or restrictions within the oil passages of the manifold.
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