Oil Pump - Inspection

    caution
    If any part of the oil pump is found to be outside the service limit, the complete pump must be replaced. Severe engine damage may result from the continued use of a faulty oil pump.
  1. Measure the rotor tip clearance using feeler gauges.
    2. Table

    Rotor Tip Clearance

    Standard

    0.15 mm

    Service limit

    0.20 mm

    Oil Pump Rotor Tip Clearance (cdqi.svg)

    Rotor Tip Clearance

  2. Measure the pump body clearance using feeler gauges.
    3. Oil Pump Body Clearance (cdqh.svg)

    Pump Body Clearance

    Table

    Pump Body Clearance

    Standard

    0.15 - 0.22 mm

    Service limit

    0.35 mm

  3. Measure the pump end clearance.
    4. * Wipe the exposed areas of both the outer rotor and the oil pump cover.
    * Apply a thin smear of grease to the outer rotor and a small quantity of silicone release agent to the oil pump cover.
    * Size a length of Plastigauge to fit across one of the lugs on the outer rotor, as shown below. Fit the Plastigauge to the outer rotor using the grease to hold the strip in place.
    Oil Pump End Clearance cdqi_1.svg)

    1. Outer rotor

    2. Plastigauge

    * Without any twisting action, refit the oil pump cover and tighten the fixings to 12 Nm.
    * Release the fixings and remove the oil pump cover.
    * Using the gauge provided with the Plastigauge kit, measure the width of the now compressed Plastigauge.
    * If the clearance is within the specified tolerance, clean off all traces of Plastigauge from the outer rotor and oil pump cover. Assemble the oil pump (see Oil Pump - Assembly).
    Oil Pump End Clearance plastigauge cdqi_2 .svg)

    1. Outer rotor

    2. Plastigauge

    3. Gauge, in millimetres

    Table

    Pump End Clearance

    Standard

    0.04 - 0.09 mm

    Service limit

    0.17 mm