Nissan Pathfinder (2008 year). Manual - part 481

LU-10

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ENGINE OIL

CAUTION:

Clean the drain plug and install with a new washer.

5.

Refill the engine with new specified engine oil.

CAUTION:

The refill capacity depends on the oil temperature and drain time. Use the “Refill oil capacity” val-
ues as a reference and check the oil level using the dipstick when filling the engine with oil.

6.

Warm up the engine and check the area around the drain plug and oil filter for any oil leaks.

7.

Stop the engine and wait for more than 10 minutes.

8.

Check the oil level using the dipstick as shown. Add oil as necessary and install the oil filler cap. Refer to

LU-8, "Inspection"

.

CAUTION:

Do not overfill the engine with oil.

Oil drain plug

: Refer to 

EM-36, "Removal and Installation"

.

Oil grade and viscosity

: Refer to 

MA-10, "Fluids and Lubricants"

.

Oil capacity

: Refer to 

MA-10, "Fluids and Lubricants"

.

OIL FILTER

LU-11

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OIL FILTER

Removal and Installation

INFOID:0000000001308819

REMOVAL

1.

Remove the engine undercover using power tool.

2.

Remove the oil filter using Tool as shown.

WARNING:

Be careful not to burn yourself, as the engine and engine oil
may be hot.

CAUTION:

• Oil filter is equipped with a pressure relief valve. 
• Use Genuine NISSAN Oil Filter or equivalent.
• When removing, prepare a shop cloth to absorb any

engine oil leaks or spills.

• Do not allow engine oil to adhere to drive belts.
• Completely wipe off any engine oil that adheres to the engine and the vehicle.

INSTALLATION

1.

Remove foreign materials adhering to the oil filter seal mating surface.

2.

Apply clean engine oil to the oil filter seal circumference of the
new oil filter as shown.

3.

Screw on the oil filter manually until it touches the installation
surface, then tighten it by 2/3 turn as shown. Or tighten to speci-
fication.

4.

Inspect the engine for oil leaks. Refer to 

LU-11, "Removal and Installation"

.

5.

Install the engine undercover using power tool.

INSPECTION AFTER INSTALLATION

1.

Check the engine oil level. Refer to 

LU-8, "Inspection"

.

2.

Start the engine and check for engine oil leaks.

3.

Stop the engine and wait for 10 minutes.

4.

Check the engine oil level and adjust the engine oil level as required.

Tool number

: KV10115801 (J-38956)

LBIA0425E

SMA010

Oil filter

: 17.7 N·m (1.8 kg-m, 13 ft-lb)

SMA702C

LU-12

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OIL COOLER

ON-VEHICLE REPAIR

OIL COOLER

Removal and Installation

INFOID:0000000001282181

WARNING:

Be careful not to burn yourself, as the engine oil and engine coolant may be hot.

CAUTION:

• Do not spill engine coolant on the drive belt.
• Do not spill engine oil on rubber parts such as drive belts and engine mounting insulator.

REMOVAL

NOTE:
When removing oil cooler only, step 1 is unnecessary.

1.

Drain engine coolant from radiator and cylinder block. Refer to 

CO-12, "Changing Engine Coolant"

 and

EM-106, "Disassembly and Assembly"

.

NOTE:
Perform this step when removing water pipes.

2.

Remove oil filter. Refer to 

LU-11, "Removal and Installation"

.

3.

Disconnect water hoses from oil cooler, pinching hoses near oil cooler to prevent engine coolant from
spilling

CAUTION:

Perform this step when engine is cold.

4.

Remove connector bolt, and remove oil cooler.

WBIA0572E

1.

Water connector

2.

Water hose

3.

Water pipe

4.

Oil pan (upper) front side

5.

O-ring

6.

Relief valve

7.

Oil cooler

8.

Oil filter

9.

Connector bolt

OIL COOLER

LU-13

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INSPECTION AFTER REMOVAL

Oil Cooler

Check oil cooler for cracks. Check oil cooler for clogging by blowing compressed air through engine coolant
inlet. If necessary, replace oil cooler assembly.

Relief Valve

Check relief valve for movement, cracks and breaks by pushing the ball. If replacement is necessary, remove
relief valve by prying it out using a suitable tool. Install a new relief valve in place by tapping it in.

INSTALLATION

Installation is in the reverse order of removal, paying attention to the following.
• Confirm that no foreign objects are adhering to the sealing sur-

faces of the oil cooler and oil pan (upper).

• Tighten connector bolt after aligning cutout on oil cooler with pro-

trusion on oil pan (upper) side.

INSPECTION AFTER INSTALLATION

1.

Check engine oil and engine coolant levels and add engine oil and engine coolant. Refer to  

LU-8,

"Inspection"

 and 

CO-11, "System Inspection"

.

2.

Start the engine, and check for leaks of engine oil or engine coolant.

3.

Stop engine and wait for 10 minutes.

4.

Check the engine oil level and the engine coolant level again. Refer to 

LU-8, "Inspection"

 and 

CO-11,

"System Inspection"

.

PBIC2825E

LU-14

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OIL PUMP

OIL PUMP

Removal and Installation

INFOID:0000000001282182

REMOVAL

1.

Remove oil pans (lower and upper). Refer to 

EM-36, "Removal and Installation"

.

2.

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

EM-61, "Removal and Installation"

.

3.

Remove the oil pump assembly.

INSTALLATION

Installation is in the reverse order of removal, paying attention to the following.
• When installing, align crankshaft flat faces with inner rotor flat faces.

INSPECTION AFTER INSTALLATION

1.

Check the engine oil level. Refer to 

LU-8, "Inspection"

.

2.

Start the engine and check for engine oil leaks.

3.

Stop engine and wait for 10 minutes.

4.

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

LU-8, "Inspection"

.

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 spring

8.

Regulator valve

PBIC2826E

OIL PUMP

LU-15

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DISASSEMBLY AND ASSEMBLY

OIL PUMP

Disassembly and Assembly

INFOID:0000000001282183

DISASSEMBLY

1.

Remove oil pump cover.

2.

Remove inner rotor and outer rotor from oil pump body.

3.

Remove the regulator valve plug, regulator valve 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 inner diameter of oil pump body to brazed portion
(position 5) using suitable tool.

2.

Measure the outer diameter of protruded portion of inner rotor
(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

Body to outer rotor (position 1)

: 0.120 - 0.195 mm (0.0047 - 0.0077 in)

Inner rotor to outer rotor tip (position 2)

: 0.060 - 0.160 mm (0.0024 - 0.0063 in)

PBIC2827E

Body to inner rotor (position 3)

: 0.030 - 0.070 mm (0.0012 - 0.0028 in)

Body to outer rotor (position 4)

: 0.050 - 0.090 mm (0.0020 - 0.0035 in)

PBIC2828E

PBIC0821E

Inner rotor to brazed portion of housing 
clearance

: 0.045 - 0.091 mm (0.0018 - 0.0036 in)

LU-16

< DISASSEMBLY AND ASSEMBLY >

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OIL PUMP

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 oil pump inner rotor with the groove faced and oil pump outer
rotor with the punch mark to oil pump cover side.

Regulator valve to oil pump cover

: 0.025 - 0.070 mm (0.0010 - 0.0028 in)

PBIC2829E

PBIC2830E

SERVICE DATA AND SPECIFICATIONS (SDS)

LU-17

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SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Standard and Limit

INFOID:0000000001282184

OIL PRESSURE

Unit: kPa (kg/cm

2

, psi)

*: Engine oil temperature at 80

°

C (176

°

F) 

OIL PUMP

Unit: mm (in)

REGULATOR VALVE

Unit: mm (in)

ENGINE OIL CAPACITY (APPROXIMATE)

Unit: 

 (US qt, Imp qt)

Engine speed

rpm 

Approximate discharge pressure*

 

Idle speed

More than 98 (1.0, 14)

2,000

More than 294 (3.0, 43) 

Body to outer rotor 

0.120 - 0.195 (0.0047 - 0.0077)

Inner rotor to outer rotor tip 

0.060 - 0.160 (0.0024 - 0.0063)

Body to inner rotor 

0.030 - 0.070 (0.0012 - 0.0028)

Body to outer rotor 

0.050 - 0.090 (0.0020 - 0.0035)

Inner rotor to brazed portion of housing 

0.045 - 0.091 (0.0018 - 0.0036)

Regulator valve to oil pump cover

0.025 - 0.070 (0.0010 - 0.0028)

Drain and refill

With oil filter change

5.1 (5-3/8, 4-1/2)

Without oil filter change

4.8 (5-1/8, 4-1/4)

Dry engine (Overhaul)

6.3 (6-5/8, 5-1/2)