DISASSEMBLY

    1.Remove engine assembly from vehicle. Refer to Exploded View (GT-R certified NISSAN dealer).
    2.Remove oil pan (lower) and oil strainer. Refer to Exploded View (GT-R certified NISSAN dealer).
    3.Remove front timing chain case, timing chain (primary) and oil pump drive chain. Refer to Exploded View (GT-R certified NISSAN dealer).
    4.Remove oil pump assembly.
    5.Remove suction pipe.
    6.Remove rear cover.
    7.Remove scavenging pump inner rotor and scavenging pump outer rotor from scavenging pump rear side.
    NOTE:
    As a reference for the assembling direction, put a mark on each rotor with paint.
    8.Remove oil pump cover.
    9.Remove shaft with oil pump inner rotor from oil pump housing.
    ■ CAUTION ■
    Never remove oil pump inner rotor from shaft.
    10.Remove oil pump outer rotor.
    NOTE:
    As a reference for the assembling direction, put a mark on the rotor with paint.
    11.After removing regulator valve plug, remove regulator valve spring and regulator valve.
 
 ASSEMBLY

Note the following, and assemble in the reverse order of disassembly.
■ CAUTION ■
Before assembly, apply new engine oil to the parts as instructed in the figure.
  • Install each rotor in the original direction, referring to the mark put before disassembly.