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
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LU-16
< DISASSEMBLY AND ASSEMBLY >
OIL PUMP
DISASSEMBLY AND ASSEMBLY
OIL PUMP
Disassembly and Assembly
INFOID:0000000005149032
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
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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
1
(Valve hole diameter) - D
2
(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
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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
INFOID:0000000005149033
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)
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