Yaris 2007

Valve Covers

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Removal & Installation




CAUTION
Observe all applicable safety precautions when working around fuel. Whenever servicing the fuel system, always work in a well ventilated area. Do not allow fuel spray or vapors to come in contact with a spark or open flame. Keep a dry chemical fire extinguisher near the work area. Always keep fuel in a container specifically designed for fuel storage; also, always properly seal fuel containers to avoid the possibility of fire or explosion.

  1. Properly relieve the fuel system pressure.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the engine cover.
  6.  
  7. Remove the ignition coils.
  8.  
  9. Disconnect the ventilation hose.
  10.  
  11. Disconnect ventilation hose No. 2.
  12.  
  13. Disconnect the fuel injector connectors.
  14.  
  15. Disconnect the connector and 3 wire harness clamps shown in the illustration and disconnect the engine wire harness.
  16.  
  17. Remove the bolt and remove the wire harness bracket.
  18.  
  19. Remove the 9 bolts, 2 nuts and 2 seal washers and then remove the cylinder head cover sub-assembly.

    Click image to see an enlarged view

    Fig. View of the valve cover and assembly

  20.  

To install:

  1. Apply seal packing to the cylinder head as shown in the illustration. Seal Packing: Toyota Genuine Seal Packing Black, Three Bond 1207B or Equivalent.
    NOTE
    Remove any oil from the contact surface.


    NOTE
    Remove any oil from the contact surfaces. Install the cylinder head cover within 3 minutes and tighten the bolts within 15 minutes after applying seal packing. Do not start the engine for at least 2 hours after the installation.



    Click image to see an enlarged view

    Fig. Apply seal packing to the cylinder head as shown

  2.  
  3. Install the cylinder head cover sub-assembly with the 9 bolts, 2 nuts and 2 seal washers.. Tighten to 7 ft. lbs. (10 Nm) in sequence.
  4.  
  5. To complete installation, reverse remaining removal procedure.

    Click image to see an enlarged view

    Fig. Valve cover tightening sequence

  6.  

 
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