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 (GT-R certified NISSAN dealer).

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

  Standard | : Refer to Oil Pump (GT-R certified NISSAN dealer).

- Measure the clearance with feeler gauge (C) and straightedge (A).

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

  Standard | : Refer to Oil Pump (GT-R certified NISSAN dealer).

- If measured values are out of the standard, replace oil pump assembly.

Regulator Valve Clearance
(Clearance) = (Regulator valve hole diameter) – (Regulator valve outer diameter)

1 | : Regulator valve
2 | : Oil pump cover

Standard | : Refer to Regulator Valve (GT-R certified NISSAN dealer).

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

■ CAUTION ■

- Coat regulator valve with engine oil.
- Check that it falls smoothly into valve hole by its own weight.

Scavenging Oil Pump Clearance

- Measure the clearance with feeler gauge (C).

- Clearance between scavenging oil pump outer rotor and oil pump body [position (B)]

  Standard | : Refer to Scavenging Oil Pump (GT-R certified NISSAN dealer).

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

  Standard | : Refer to Scavenging Oil Pump (GT-R certified NISSAN dealer).

- Measure the clearance with feeler gauge (C) and straightedge (A).

- Side clearance between scavenging oil pump rotor and oil pump housing [position (B)]

  Standard | : Refer to Scavenging Oil Pump (GT-R certified NISSAN dealer).

- If measured values are out of the standard, replace oil pump assembly.

INSPECTION AFTER INSTALLATION

1.Check the engine oil level. Refer to Inspection.

2.Start the engine, and check there is no leakage of engine oil.

3.Stop the engine and wait for 5 minutes.

4.Check the engine oil level and adjust the level. Refer to Inspection.