OIL PUMP INSPECTION


  1. INSPECT OIL PUMP RELIEF VALVE


    1. A01G7Q4

      Coat the oil pump relief valve with engine oil and check that it falls smoothly into the valve hole by its own weight.

      If the oil pump relief valve does not fall smoothly, replace the oil pump relief valve. If necessary, replace the timing chain cover sub-assembly.

  2. INSPECT OIL PUMP ROTOR SET


    1. A01G5XVE04
      Text in Illustration
      *a Rotor Mark

      Install the rotors to the timing chain cover sub-assembly with the rotor marks facing up. Check that the rotors rotate smoothly.

    2. A01G4WK

      Check the tip clearance.


      1. Using a feeler gauge, measure the clearance between the drive and driven rotor tips as shown in the illustration.

        Tip Clearance
        Standard
        0.060 to 0.160 mm (0.00236 to 0.00630 in.)
        Maximum
        0.160 mm (0.00630 in.)

        If the tip clearance is greater than the maximum, replace the timing chain cover sub-assembly.

    3. A01G9A9

      Check the side clearance.


      1. Using a feeler gauge and precision straightedge, measure the clearance between the rotors and precision straightedge as shown in the illustration.

        Side Clearance
        Standard
        0.030 to 0.090 mm (0.00118 to 0.00354 in.)
        Maximum
        0.090 mm (0.00354 in.)

        If the side clearance is greater than the maximum, replace the timing chain cover sub-assembly.

    4. A01G92Z

      Check the body clearance.


      1. Using a feeler gauge, measure the clearance between the timing chain cover sub-assembly and driven rotor as shown in the illustration.

        Body Clearance
        Standard
        0.250 to 0.325 mm (0.00984 to 0.0128 in.)
        Maximum
        0.325 mm (0.0128 in.)

        If the body clearance is greater than the maximum, replace the timing chain cover sub-assembly.