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.