E320 1999

Valve Covers

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Removal & Installation



M112 & M113 Engines
  1. Before servicing the vehicle, refer to the precautions.
  2.  
  3. Remove engine trim panel with integrated air filter. Unclip covering on front side of engine.
  4.  
  5. Remove air filter.
  6.  
  7. Unscrew the guide tube of the automatic transmission oil dipstick.
  8.  
  9. Detach right ignition coils, left ignition coils on right cylinder head cover and left cylinder head cover.
  10.  
  11. Disconnect spark plug connectors.
  12.  
  13. Pull off vent hoses on right connector and on left connector of the right cylinder head cover and left cylinder head cover.
  14.  
  15. Pull off engine vent hose on left connector of left cylinder head cover.
  16.  
  17. Disconnect fuel line at fuel rail.
  18.  
  19. Remove cylinder head cover.

    Click image to see an enlarged view

    Fig. Cylinder head cover

  20.  

To install:

  1. Tighten bolts/nuts to specification as follows:

    Cylinder head cover bolt: 7 ft. lbs. (9 Nm)
     
    Bolt, ignition coils to cylinder head cover: 6 ft. lbs. (8 Nm)
     
    Disconnect fuel feed line at fuel rail: 28 ft. lbs. (38 Nm)
     
    Fuel feed line to fuel distributor: 28 ft. lbs. (38 Nm)
     

  2.  
  3. Check cylinder head covers for leaks.
  4.  
  5. Observe marking for spark plug connectors on the cylinder head covers and ignition coils.
  6.  

 
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