Infiniti F50. Manual - part 673

OIL PUMP

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OIL PUMP

PFP:15010

Removal and Installation

EBS0024Q

CAUTION:

Before installation, apply new engine oil to the parts as instructed in the figure.

REMOVAL

1.

Remove front cover.
Refer to Timing Chain, 

EM-35, "Removal and Installation"

 . 

2.

Remove the oil pump drive spacer.

●

Set bolts in the two bolts holes [M6 x 1.0 mm (0.039 in)] on
the front surface. Using a small puller, remove the oil pump
drive spacer from the crankshaft.

NOTE:
The dimension between the centers of the two bolt holes is 33
mm (1.30 in).
In the figure, a commercial steering puller is used.

3.

Remove the oil pump.

INSTALLATION

1.

Install the oil pump.

2.

Install the oil pump drive spacer as follows.

a.

When inserting the oil pump drive spacer, align the crankshaft
key and the flat face of the inner rotor.

●

If they are not aligned, rotate the inner rotor by hand.

b.

Make sure that the each part is aligned. Using a tool such as a
plastic hammer, tap lightly until it reaches the end.

3.

Install in the reverse order of removal.

PBIC0994E

1.

Oil pump body

2.

Outer rotor

3.

Inner rotor

4.

Oil pump cover

5.

Oil pump drive spacer

6.

Regulator valve

7.

Regulator spring

8.

Regulator plug

PBIC0054E

PBIC0058E

LU-10

OIL PUMP

Disassembly and Assembly

EBS0024L

DISASSEMBLY

1.

Remove oil pump cover.

2.

Remove inner rotor and outer rotor from front cover. 

3.

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

INSPECTION AFTER DISASSEMBLY 
Clearance of Oil Pump Parts

●

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

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

●

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

       Side clearance between outer rotor and oil pump body (position 
       4)

●

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)

2.

Measure the inner diameter of oil pump body with inside
micrometer (Position 6)
(Clearance) = (Inner diameter of oil pump body) – (Outer diame-
ter of inner rotor)

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

OIL PUMP

LU-11

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Regulator Valve Clearance

(Clearance) = D1 (Valve hole diameter) – D2 (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.

●

Install the inner rotor and 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

LU-12

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

PFP:00030

Standard and Limit

EBS003Q7

OIL PRESSURE

OIL PUMP

Unit: mm (in)

REGULATOR VALVE

Unit: mm (in)

ENGINE OIL CAPACITY

Unit: 

 (US qt, Imp qt)

Tightening torque

EBS002NE

Unit: N·m (kg-m, ft-lb)

Unit: N·m (kg-m, in-lb)*

Engine speed

rpm 

Approximate discharge pressure

kPa (kg/cm

2

 , psi) 

Idle speed

2,000
6,000 

More than 98 (1.0, 14)

294 (3.0, 43) 
392 (4.0, 57)

Body to outer rotor radial clearance

0.114 - 0.200 (0.0045 - 0.0079)

Inner rotor to outer rotor tip clearance

Below 0.18 (0.0071)

Body to inner rotor axial clearance

0.030 - 0.070 (0.0012 - 0.0028)

Body to outer rotor axial clearance

0.030 - 0.900 (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)

With oil filter change

Approximately 5.6 (5-7/8, 4-7/8)

Without oil filter change

Approximately 5.0 (5-1/4, 4-3/8)

Dry engine (engine overhaul)

Approximately 6.7 (7-1/8, 5-7/8)               

Oil pressure switch

12.3 - 17.2 (1.25 - 1.75, 10 - 12)

Oil pan drain plug

29.4 - 39.2 (3.0 - 4.0, 22 - 28)

Oil filter

14.7 - 20.6 (1.5 - 2.1, 11 - 15)

Oil pump body

 8.1 - 9.5 (0.83 - 0.96, 72 - 84)*

Oil pump cover

 5.9 - 7.9 (0.61 - 0.81, 53 - 69)*

Regulator plug

39.2 - 68.6 (4.0 - 6.9, 29 - 50)