Clearance of Oil Pump Parts

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

Measure radial clearance using a suitable tool.

Fig 1: Measuring Radial Clearance Using Suitable Tool
Courtesy of NISSAN MOTOR CO., U.S.A.
1. Body to outer rotor (position 1): 0.114 - 0.200 mm (0.0045 - 0.0079 in)
2. Inner rotor to outer rotor tip (position 2): Below 0.180 mm (0.0071 in)
Measure side clearance using suitable tools.

Fig 2: Measuring Side Clearance Using Suitable Tools
Courtesy of NISSAN MOTOR CO., U.S.A.
1. Body to inner rotor (position 3): 0.030 - 0.070 mm (0.0012 - 0.0028 in)
2. Body to outer rotor (position 4): 0.030 - 0.090 mm (0.0012 - 0.0035
Calculate the clearance between inner rotor and oil pump body as follows.

Measure the outer diameter of protruded portion of inner rotor (position 5) using suitable tool.

Fig 3: Measuring Outer Diameter Of Protruded Portion Of Inner Rotor (Position 5) Using Suitable Tool
Courtesy of NISSAN MOTOR CO., U.S.A.
Measure the inner diameter of oil pump body to brazed portion (position 6) using suitable tool.

Fig 4: Measuring Inner Diameter Of Oil Pump Body To Brazed Portion (Position 6) Using Suitable Tool
Courtesy of NISSAN MOTOR CO., U.S.A.
Calculate the clearance using the following formula.
- (Clearance) = (Inner diameter of oil pump body) - (Outer diameter of inner rotor)
  1. Inner rotor to brazed portion of housing clearance: 0.045 - 0.091 mm (0.0018 - 0.0036 in)