Infiniti QX56 (JA60). Manual - part 676

OIL PUMP

LU-15

< ON-VEHICLE REPAIR >

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• Start the engine, and check for leaks of engine oil.

• Stop engine and wait 10 minutes.

• Check level and add engine oil as required. Refer to 

LU-8

.

LU-16

< DISASSEMBLY AND ASSEMBLY >

OIL PUMP

DISASSEMBLY AND ASSEMBLY

OIL PUMP

Disassembly and Assembly

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DISASSEMBLY

1. Remove oil pump cover.
2. Remove inner rotor and outer rotor from oil pump body. 
3. Remove the regulator plug, regulator spring and regulator valve.

INSPECTION AFTER DISASSEMBLY 

Clearance of Oil Pump Parts

• Measure radial clearance using a suitable tool.

• Measure side clearance using suitable tools.

• Calculate the clearance between inner rotor and oil pump body as

follows.

1. Measure the outer diameter of protruded portion of inner rotor

(position 5) using suitable tool.

Body to outer rotor (position 1)
: 0.114 - 0.200 mm (0.0045 - 0.0079 in)

Inner rotor to outer rotor tip (position 2)
: Below 0.180 mm (0.0071 in)

PBIC0139E

Body to inner rotor (position 3)
: 0.030 - 0.070 mm (0.0012 - 0.0028 in)

Body to outer rotor (position 4)
: 0.030 - 0.090 mm (0.0012 - 0.0035 in)

PBIC0140E

PBIC0141E

OIL PUMP

LU-17

< DISASSEMBLY AND ASSEMBLY >

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2. Measure the inner diameter of oil pump body to brazed portion

(position 6) using suitable tool.

3. Calculate the clearance using the following formula.

• (Clearance) = (Inner diameter of oil pump body) - (Outer diameter of inner rotor)

Regulator Valve Clearance

Check regulator valve to oil pump cover clearance using the following formula.

• (Clearance) = D

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 (Valve hole diameter) - D

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   (Outer Diameter of

valve)

CAUTION:

• Coat regulator valve with engine oil.

• Check that it falls smoothly into the regulator valve hole by its

own weight.

ASSEMBLY

Installation is in the reverse order of removal.

NOTE:

Install the inner rotor and outer rotor with the punched marks on the

oil pump cover side.

PBIC0142E

Inner rotor to brazed portion of housing 
clearance
: 0.045 - 0.091 mm (0.0018 - 0.0036 in)

Regulator valve to oil pump cover
: 0.040 - 0.097 mm (0.0016 - 0.0038 in)

PBIC0143E

PBIC0144E

LU-18

< SERVICE DATA AND SPECIFICATIONS (SDS) 

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Standard and Limit

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OIL PRESSURE

Unit: kPa (kg/cm

2, psi)

OIL PUMP

Unit: mm (in)

REGULATOR VALVE

Unit: mm (in)

ENGINE OIL CAPACITY (APPROXIMATE)

Unit:   (US qt, Imp qt)

Engine speed

Approximate discharge oil pressure

Idle speed

More than 98 (1.0, 14)

2,000 rpm

More than 294 (3.0, 43)

Body to outer rotor radial clearance

0.114 - 0.200 (0.0045 - 0.0079)

Inner rotor to outer rotor tip clearance

Below 0.180 (0.0071)

Body to inner rotor side clearance

0.030 - 0.070 (0.0012 - 0.0028)

Body to outer rotor side clearance

0.030 - 0.090 (0.0012 - 0.0035)

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)

Drain and refill

With oil filter change

6.5 (6-7/8, 5-3/4)

Without oil filter change

6.2 (6-1/2, 5-1/2)

Dry engine (engine overhaul)

7.6 (8, 6-3/4)