Avalon 1995-1996

Valve Covers

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Drain the engine coolant.
  6.  
  7. Disconnect the radiator inlet hose.
  8.  
  9. Disconnect the throttle and accelerator cables.
  10.  
  11. Remove the air cleaner cap assembly.
  12.  
  13. Remove the V-bank cover. Use a hexagon wrench to loosen the nuts.
  14.  
  15. Label and remove all emission control valve hoses. Disconnect any wiring interfering with the valve cover removal.
  16.  
  17. Remove the air intake chamber. This will gain you access to the back valve cover.
  18.  
  19. Disconnect the engine wire from the left hand side, No. 3 timing belt cover, rear side and right hand side. Most of the wiring is secured by nuts and or bolts to the body of the vehicle.
  20.  
  21. Remove the ignition coils, make sure the place them in order on a table so not to mix them up.
  22.  
  23. Remove the 8 bolts retaining the valve covers and gasket.

    Click image to see an enlarged view

    Fig. To remove the valve cover, remove the bolts and set them aside . . .



    Click image to see an enlarged view

    Fig. . . . then remove the cover from the cylinder head



    Click image to see an enlarged view

    Fig. Inspect the seals in the top of the valve cover and replace if necessary



    Click image to see an enlarged view

    Fig. Remove the gasket from the edge of the cover and discard

  24.  

To install:

  1. Clean the mating area of the valve cover and cylinder heads well. If necessary, scrape any left gasket from either surface.
  2.  
  3. Apply seal packing to the cylinder heads and place new gaskets into position.

    Click image to see an enlarged view

    Fig. Inspect the cylinder head end seals. Replace with new packing material if necessary

  4.  
  5. Attach the valve covers. Uniformly tighten the bolts in several passes to 69 inch lbs. (8 Nm).
  6.  
  7. Install the spark plugs in their proper locations, then place the ignition coils into place and secure.
  8.  
  9. Attach all engine wiring be sure to secure each harness properly.
  10.  
  11. Install the air intake chamber.
  12.  
  13. Attach all emission hoses and wiring.
  14.  
  15. Install the V-bank cover.
  16.  
  17. Connect the radiator inlet hose.
  18.  
  19. Refill the engine coolant.
  20.  
  21. Connect the throttle and accelerator cables.
  22.  
  23. Install the air cleaner cap assembly.
  24.  
  25. Connect the negative battery cable.
  26.  
  27. Start the engine and top off the coolant level.
  28.  

 
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