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 Side Clearance Between Oil Pump Outer 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 Outer Diameter Of Protruded Portion Of Oil Pump Inner Rotor 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: Checking Regulator Valve Clearance

  Courtesy of NISSAN NORTH AMERICA, INC.

  Standard: Refer to  "REGULATOR VALVE ".

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