Infiniti Q45. Manual - part 715

OIL PUMP

LU-11

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●

Check level of engine oil, and adjust engine oil level. Refer to

LU-6, "ENGINE OIL"

 .

Disassembly and Assembly

NBS001PF

DISASSEMBLY

1.

Remove oil pump cover.

2.

Remove oil pump inner rotor and oil pump outer rotor from oil pump body. 

3.

After removing regulator plug, remove regulator spring and regulator valve.

INSPECTION AFTER DISASSEMBLY 
Oil Pump Clearance

●

Measure clearance with a feeler gauge.
Clearance between oil pump outer rotor and oil pump body
(position 1)

Tip clearance between oil pump inner rotor and oil pump outer
rotor (position 2)

●

Measure clearance with a feeler gauge and a straightedge.
Side clearance between oil pump inner rotor and oil pump body
(position 3)

Side clearance between oil pump outer rotor and oil pump body
(position4)

●

Calculate the clearance between oil pump inner rotor and oil
pump body as follows:

–

Measure the outer diameter of protruded portion of oil pump
inner rotor with a micrometer (Position 5)

–

Measure the inner diameter of oil pump body with an inside
micrometer (Position 6)

•

(Clearance) = (Oil pump body inner diameter) – (Oil pump inner
rotor outer diameter)

●

If out of the standard, replace oil pump assembly.

Standard

: 0.114 - 0.200 mm (0.0045 - 0.0079 in)

Standard

: Below 0.180 mm (0.0071in)

PBIC0139E

Standard

: 0.030 - 0.070 mm (0.0012 - 0.0028 in)

Standard

: 0.030 - 0.090 mm (0.0012 - 0.0035 in)

PBIC0140E

PBIC0141E

Standard

: 0.045 - 0.091 mm (0.0018 - 0.0036 in)

PBIC0142E

LU-12

OIL PUMP

Regulator Valve Clearance

(Clearance) = “D1” (Valve hole diameter) – “D2” (Regulator valve
outer diameter)

●

If out of the standard, replace oil pump assembly.

CAUTION:

●

Coat regulator valve with engine oil.

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Make sure that it falls smoothly into the regulator valve hole
by its own weight.

ASSEMBLY

Note the following, and assembly is in the reverse order of disas-
sembly.

●

Install oil pump inner rotor and oil pump outer rotor with the
punched marks on the oil pump cover side.

Standard

: 0.040 - 0.097 mm (0.0016 - 0.0038 in)

PBIC0143E

PBIC0144E

SERVICE DATA AND SPECIFICATIONS (SDS)

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SERVICE DATA AND SPECIFICATIONS (SDS)

PFP:00030

Standard and Limit

NBS001PG

OIL PRESSURE

*: Engine oil temperature at 80

°

C (176

°

F)

OIL PUMP

Unit: mm (in)

REGULATOR VALVE

Unit: mm (in)

ENGINE OIL CAPACITY

Unit: 

 (US qt, Imp qt)

Engine speed

rpm 

Approximate discharge pressure*

kPa (kg/cm

2

 , psi) 

Idle speed

2,000

98 (1.0, 14)

294 (3.0, 43)

Oil pump body to oil pump outer rotor radial clearance

0.114 - 0.200 (0.0045 - 0.0079)

Oil pump inner rotor to oil pump outer rotor tip clearance

Below 0.180 (0.0071)

Oil pump body to oil pump inner rotor side clearance

0.030 - 0.070 (0.0012 - 0.0028)

Oil pump body to oil pump outer rotor side clearance

0.030 - 0.090 (0.0012 - 0.0035)

Oil pump inner rotor to oil pump body clearance

0.045 - 0.091 (0.0018 - 0.0036)

Regulator valve to oil pump body clearance

0.040 - 0.097 (0.0016 - 0.0038)

With oil filter change

5.6 (5-7/8, 4-7/8)

Without oil filter change

5.0 (5-1/4, 4-3/8)

Dry engine (engine overhaul)

6.7 (7-1/8, 5-7/8)               

LU-14

SERVICE DATA AND SPECIFICATIONS (SDS)