OIL PUMP INSPECTION

PROCEDURE


  1. INSPECT OIL PUMP RELIEF VALVE


    1. B004IYN

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

      Tech Tips

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

  2. INSPECT OIL PUMP ROTOR


    1. Check the side clearance (Oil pump driven rotor side).


      1. B004ID9C01
        *1 Oil Pump Driven Rotor
        *2 Oil Pump Body
        *a Width
        *b Depth
        *c Straightedge

        Using a vernier caliper, measure the width of the oil pump driven rotor.

        Tech Tips

        Perform the measurement at 3 random places.

      2. Using a vernier caliper and precision straightedge, measure the depth of the oil pump body.

        Note

        Make sure to deduct the thickness of the precision straightedge.

        Tech Tips

        Perform the measurement at 3 random places.

      3. Subtract the oil pump driven rotor width measurement from the oil pump body depth measurement.

        Standard Side Clearance
        0.025 to 0.070 mm (0.000984 to 0.00276 in.)

        Tech Tips

        If the result is not as specified, replace the oil pump assembly.

    2. Check the side clearance (Oil pump regulator ring side).


      1. B004O6GC01
        *1 Oil Pump Regulator Ring
        *2 Oil Pump Body
        *a Width
        *b Depth
        *c Straightedge

        Using a vernier caliper, measure the width of the oil pump regulator ring.

        Tech Tips

        Perform the measurement at 3 random places.

      2. Using a vernier caliper and precision straightedge, measure the depth of the oil pump body.

        Note

        Make sure to deduct the thickness of the precision straightedge.

        Tech Tips

        Perform the measurement at 3 random places.

      3. Subtract the oil pump regulator ring width measurement from the oil pump body depth measurement.

        Standard Side Clearance
        0.025 to 0.075 mm (0.000984 to 0.00295 in.)

        Tech Tips

        If the result is not as specified, replace the oil pump assembly.