OIL PUMP INSPECTION


  1. INSPECT OIL PUMP RELIEF VALVE


    1. B000N7X

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

      If the valve does not fall smoothly, replace the relief valve. If necessary, replace the oil pump assembly.

  2. INSPECT OIL PUMP ROTOR SET


    1. B000LK4E04
      Text in Illustration
      *a Mark

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

    2. B000K3R

      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. B000HNV

      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. B000J6Z

      Check the body clearance.


      1. Using a feeler gauge, measure the clearance between the timing chain cover 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.