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PSI (Power Solutions Intl) — Service Procedure

A PSI (Power Solutions Intl) service procedure — check it applies to your exact model before use.

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Procedure

  1. 1) Loosen the valve cover bolts. Remove the bolts and the washers.
  2. 2) Pull the covers up vertically to remove them. Remove all gaskets.
  3. 2.10.3. Steps to assemble valve cover
  4. 1) Use new valve cover gaskets for all assemblies and inspect them for any defects or
  5. damage prior to assembly.
  6. 2) Clean the upper surface of the cylinder head. Install valve cover gaskets.
  7. 3) Clean and install cylinder head cover.
  8. 4) Install the bolts and fasten. The required torque is 10~15Nm.
  9. 2.10.4. Valve cover inspection and repair
  10. Key point 1: Assembly
  11. Valve cover gaskets are disposable and should be replaced during maintenance.
  12. Key point 2: Inspection
  13. 1) Check the covers for any cracks or other damage. Replace if damaged.
  14. 2) If there is leakage through the valve cover gaskets, then all gaskets should be checked and
  15. replaced.

Specs & torque values

  • 15Nm

Source: manual:4.5L-Engine-Service-Manual-7610033-2.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.