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    1990 Audi 200 2.2L FI Turbo SOHC 5cyl

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    Nissan Murano 2003-05

    Oil Pump

    Print

    Inspection



    1. Remove the oil pump from the engine.
    2.  
    3. Remove the oil pump cover.
    4.  
    5. Remove the inner and outer rotors from the oil pump body.
    6.  
    7. Remove the regulator plug, regulator spring and regulator valve.
    8.  
    9. Measure the oil pump clearance using a feeler gauge. Body to outer rotor (position 1) should be 0.0045-0.0102 inch. Inner rotor to outer rotor (position 2) should be 0.0071 inch.

      Click image to see an enlarged view

      Fig. Oil pump clearance measurement

    10.  
    11. Measure the clearance using a feeler gauge. Side clearance between the inner rotor and the pump body (position 3) should be 0.0012-0.0028 inch. Side clearance between the outer rotor and the pump body (position 4) should be 0.0020-0.0043 inch.

      Click image to see an enlarged view

      Fig. Oil pump side clearance measurement

    12.  
    13. Calculate the clearance between the inner rotor and the oil pump body as follows.
    14.  
    15. Measure the inner diameter of the oil pump body with an inside micrometer (position 5). Measure the outer diameter of the oil pump inner rotor with a micrometer (position 6).
    16.  
    17. Calculate the oil pump inner rotor to oil pump body clearance using the following formula. Clearance=Inner diameter of oil pump body-Outer diameter of inner rotor. Inner rotor to brazed portion of housing clearance specification is 0.0018-0.0036 inch. If not within specification, replace the oil pump.

      Click image to see an enlarged view

      Fig. Oil pump inner rotor and pump body clearance measurement

    18.  
    19. Check the regulator valve to oil pump cover clearance using the following formula. Clearance=(valve hole diameter)- (outer diameter of valve). Regulator valve to oil pump specification should be 0.0016-0.0038 inch.
      NOTE
      Coat the valve with clean engine oil. Check that it falls smoothly into the regulator valve hole by its own weight.



      Click image to see an enlarged view

      Fig. Oil pump regulator valve clearance measurement

    20.  
    21. Assemble the oil pump in the reverse order.
    22.  
    23. Install the inner and outer rotor with the punched marks on the oil pump cover side.

      Click image to see an enlarged view

      Fig. Oil pump punch mark location

    24.  

    Removal & Installation





    Click image to see an enlarged view

    Fig. Oil pump exploded view

    1. Before servicing the vehicle, refer to the Precautions section.
    2.  
    3. Remove oil pan and oil strainer.
    4.  
    5. Remove front timing chain case and timing chain (primary).
    6.  
    7. Remove oil pump assembly.
    8.  
    9. Installation is the reverse of removal. When installing, align crankshaft flat faces with inner rotor flat faces.
    10.  



    Click image to see an enlarged view

    Fig. Oil pump and related components

    1. Before servicing the vehicle, refer to the Precautions Section.
    2.  
    3. Remove the upper and lower oil pans.
    4.  
    5. Remove the oil strainer.
    6.  
    7. Remove front timing chain case and timing chain (primary).
    8.  
    9. Remove oil pump assembly.
    10.  

    To install:

    1. Installation is the reverse of the removal procedure.
    2.  
    3. Be sure to use new gaskets.
    4.  
    5. When installing, align crankshaft flat faces with inner rotor flat faces.
    6.  

     
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