OIL PUMP INSPECTION

PROCEDURE


  1. INSPECT OIL PUMP RELIEF VALVE


    1. A01HFRC

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

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

  2. INSPECT OIL PUMP ASSEMBLY


    1. Check the side clearance.


      1. A01HH5E

        Using a feeler gauge and precision straightedge, measure the clearance between the oil pump drive rotor, oil pump driven rotor and precision straightedge.

        Standard Side Clearance
        0.085 to 0.115 mm (0.00335 to 0.00453 in.)
        Maximum Side Clearance
        0.16 mm (0.00629 in.)

        If the side clearance is more than the maximum, replace the oil pump assembly.

    2. Check the tip clearance.


      1. A01HIEG

        Using a feeler gauge, measure the clearance between the oil pump drive rotor and oil pump driven rotor tips.

        Standard Tip Clearance
        0.08 to 0.16 mm (0.00315 to 0.00629 in.)
        Maximum Tip Clearance
        0.35 mm (0.0137 in.)

        If the tip clearance is more than the maximum, replace the oil pump assembly.

    3. Check the body clearance.


      1. A01HJSR

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

        Standard Body Clearance
        0.12 to 0.19 mm (0.00473 to 0.00748 in.)
        Maximum Body Clearance
        0.325 mm (0.0127 in.)

        If the body clearance is more than the maximum, replace the oil pump assembly.