Inspection After Disassembly

Oil Pump Clearance

• Measure the clearance with feeler gauge (C).
  • Clearance between oil pump outer rotor and oil pump body [position (B)]

    Standard: Refer to  "OIL PUMP ".

  • Tip clearance between oil pump inner rotor and oil pump outer rotor [position (A)]

    Standard: Refer to  "OIL PUMP ".

  Fig 1: Measuring Clearance Between Oil Pump Outer Rotor And Oil Pump Body Using Feeler Gauge

  Courtesy of NISSAN NORTH AMERICA, INC.
• Measure the clearance with feeler gauge and straightedge (A).
  • Side clearance between oil pump inner rotor and oil pump body [position (C)]

    Standard: Refer to  "OIL PUMP ".

  • Side clearance between oil pump outer rotor and oil pump body [position (B)]

    Standard: Refer to  "OIL PUMP ".

  Fig 2: Measuring Clearance Between Oil Pump Inner Rotor And Oil Pump Body Using Feeler Gauge And Straightedge

  Courtesy of NISSAN NORTH AMERICA, INC.
• Calculate the clearance between oil pump inner rotor and oil pump body as follows:

  OIL PUMP BODY INNER DIAMETER 

  • Measure the inner diameter of oil pump body with inside micrometer. [position (A)]

  OIL PUMP INNER ROTOR OUTER DIAMETER 

  • Measure the outer diameter of protruded portion of oil pump inner rotor 1) with micrometer. [position (B)]
    Fig 3: Measuring Oil Pump Body Inner Diameter Using Micrometer

    Courtesy of NISSAN NORTH AMERICA, INC.

  OIL PUMP INNER ROTOR TO OIL PUMP BODY CLEARANCE 

  • (Clearance) = (Oil pump body inner diameter) - (Oil pump inner rotor outer diameter)

  Standard: Refer to  "OIL PUMP ".

• If measured/calculated values are out of the standard, replace oil pump assembly.

  Regulator Valve Clearance

  (Clearance) = (Regulator valve hole diameter) - (Regulator valve outer diameter)

  Fig 4: Measuring Regulator Valve Clearance Using Tool

  Courtesy of NISSAN NORTH AMERICA, INC.

  Standard: Refer to  "REGULATOR VALVE ".

• If the calculated value is out of the standard, replace oil pump assembly.