Yaris 2007

Oil Pump

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Inspection



Specific to:

Toyota Yaris 2007-2010

  1. Inspect oil pump relief valve:
    1. Coat the oil pump relief valve with engine oil and check that it falls smoothly into the valve hole under its own weight.
    2.  
    3. If not, replace the oil pump relief valve. If necessary, replace the oil pump assembly.
    4.  

  2.  
  3. Inspect oil pump rotor set:
  4.  
  5. Install the 2 rotors with both of the marks facing the oil pump cover side.
    1. Using a feeler gauge, measure the clearance between the drive and driven rotor tips.

      Standard tip clearance: 0.0024 to 0.0071 inches
       
      Maximum tip clearance: 0.0110 inches
       

    2.  
    3. If the tip clearance is greater than the maximum, replace the oil pump assembly.
    4.  

  6.  
  7. Check the rotor body clearance.
    1. Using a feeler gauge, measure the clearance between the driven rotor and the oil pump body.

      Standard body clearance: 0.0098 to 0.0128 inches
       
      Maximum body clearance: 0.0167 inches
       

    2.  
    3. If the body clearance is greater than the maximum, replace the oil pump assembly.
    4.  

  8.  

Removal & Installation



Specific to:

Toyota Yaris 2007-2010


NOTE
The oil pump is integrated with the timing chain cover.

  1. Remove the timing chain cover.
  2.  
  3. Remove the 2 bolts and 3 screws and remove the oil pump cover.
  4.  
  5. Remove the oil pump rotor set.
  6.  
  7. Remove the oil pump relief valve plug, oil pump relief valve spring and oil pump relief valve.

    Click image to see an enlarged view

    Fig. Remove the 2 bolts and 3 screws and remove the oil pump cover



    Click image to see an enlarged view

    Fig. Remove the oil pump relief valve plug, oil pump relief valve spring and oil pump relief valve

  8.  

To install:

  1. Coat the oil pump relief valve with engine oil and insert the oil pump relief valve and oil pump relief valve spring into the oil pump cover.
  2.  
  3. Install the oil pump relief valve plug. Tighten to 18 ft. lbs. (25 Nm).
  4.  
  5. Coat the oil pump rotor set with engine oil and place it into the oil pump body with the marks facing the oil pump cover side.

    Click image to see an enlarged view

    Fig. Oil pump rotor set installation orientation

  6.  
  7. Install the oil pump cover with the 2 bolts and 3 screws.
    1. Bolt: 78 inch lbs. (8.8 Nm).
    2.  
    3. Screw: 7.6 ft. lbs. (10 Nm).
    4.  

  8.  

 
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