Infiniti M35/M45 Y50. Manual - part 947

OIL PUMP

LU-19

[VQ35DE]

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OIL PUMP

PFP:15010

Components

NBS004Q3

Removal and Installation

NBS004Q4

REMOVAL

1.

Remove oil pans (lower and upper) and oil strainer. Refer to 

EM-31, "OIL PAN AND OIL STRAINER"

 .

2.

Remove front timing chain case and timing chain (primary). Refer to 

EM-66, "TIMING CHAIN"

 .

3.

Remove oil pump assembly.

INSTALLATION

CAUTION:

Before installation, apply new engine oil to the parts as instructed in the figure.
Note the following, and install in the reverse order of removal.

●

When installing, align crankshaft flat faces with oil pump inner rotor flat faces.

INSPECTION AFTER INSTALLATION

1.

Check the engine oil level. Refer to 

LU-7, "ENGINE OIL"

 .

2.

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

3.

Stop the engine and wait for 10 minutes.

4.

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

LU-7, "ENGINE OIL"

 .

Disassembly and Assembly

NBS004Q5

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 valve plug, remove regulator valve spring and regulator valve.

1.

Oil pump body

2.

Oil pump outer rotor

3.

Oil pump inner rotor

4.

Oil pump cover

5.

Regulator valve plug

6.

Regulator valve spring

7.

Regulator valve

SBIA0481E

LU-20

[VQ35DE]

OIL PUMP

INSPECTION AFTER DISASSEMBLY
Oil Pump Clearance

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Measure the clearance with 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”)

–

If out of the standard, replace inner rotor and outer rotor.

●

Measure the clearance with feeler gauge and straightedge.

–

Side clearance between oil pump inner rotor and oil pump body
(Position “3”)

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Side clearance between oil pump outer rotor and oil pump body
(Position “4”)

●

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

OIL PUMP BODY INNER DIAMETER

–

Measure the inner diameter of oil pump body with inside
micrometer. (Position “5”)

OIL PUMP INNER ROTOR OUTER DIAMETER

–

Measure the outer diameter of protruded portion of oil pump
inner rotor with micrometer. (Position “6”)

OIL PUMP INNER ROTOR TO OIL PUMP BODY CLEARANCE

–

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

●

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

Standard

: 0.114 - 0.260 mm (0.0045 - 0.0102 in)

Standard

: Below 0.180 mm (0.0071 in)

SLC932A

Standard

: 0.030 - 0.070 mm (0.0012 - 0.0028 in)

Standard

: 0.050 - 0.110 mm (0.0020 - 0.0043 in)

SLC933A

PBIC0821E

Standard

: 0.045 - 0.091 mm (0.0018 - 0.0036 in)

OIL PUMP

LU-21

[VQ35DE]

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Regulator Valve Clearance

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

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

CAUTION:

●

Coat regulator valve with engine oil.

●

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

ASSEMBLY

Note the following, and assemble in the reverse order of disassembly.

●

Install oil pump inner rotor with the groove faced to oil pump
cover side.

Standard

: 0.040 - 0.097 mm (0.0016 - 0.0038 in)

PBIC0822E

PBIC0832E

LU-22

[VQ35DE]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

PFP:00030

Standard and Limit

NBS004Q6

ENGINE OIL PRESSURE

Unit: kPa (kg/cm

2

 , psi)

*: Engine oil temperature at 80

°

C (176

°

F)

ENGINE OIL CAPACITY (APPROXIMATE)

Unit: 

 (US qt, lmp qt)

OIL PUMP

Unit: mm (in)

REGULATOR VALVE

Unit: mm (in)

Engine speed 

Approximate discharge pressure* 

Idle speed

More than 98 (1.0, 14)

2,000 rpm

More than 294 (3.0, 43) 

Drain and refill 

With oil filter change

4.7 (5, 4-1/8)

Without oil filter change

4.4 (4-5/8, 3-7/8)

Dry engine (Overhaul)

5.4 (5-3/4, 4-3/4)

Oil pump body to oil pump outer rotor radial clearance

0.114 - 0.260 (0.0045 - 0.0102)

Oil pump inner rotor to oil pump outer rotor tip clearance

Below 0.180 (0.0071)

Oil pump body to oil pump inner rotor axial clearance

0.030 - 0.070 (0.0012 - 0.0028)

Oil pump body to oil pump outer rotor axial clearance

0.050 - 0.110 (0.0020 - 0.0043)

Oil pump inner rotor to brazed portion of housing clearance

0.045 - 0.091 (0.0018 - 0.0036)

Regulator valve to oil pump cover clearance

0.040 - 0.097 (0.0016 - 0.0038)