Nissan Pathfinder (2009 year). Manual - part 504

LUBRICATION SYSTEM

LU-23

< FUNCTION DIAGNOSIS >

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System Chart

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PBIC0134E

2009 Pathfinder

LU-24

< ON-VEHICLE MAINTENANCE >

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ENGINE OIL

ON-VEHICLE MAINTENANCE

ENGINE OIL

Inspection

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OIL LEVEL

• Before starting the engine make sure the vehicle is parked on a flat

and level surface, then check the oil level. If the engine is already
running, turn it off and allow 10 minutes before checking.

• Pull out oil level gauge and wipe clean.
• Insert oil level gauge.
• Check that the oil level is within the low (L) and high (H) range as

indicated on the dipstick.

• If the engine oil level is out of range, add oil as necessary. Refer to

MA-12, "Fluids and Lubricants"

.

CAUTION:

Do not overfill the engine with oil.

OIL APPEARANCE

• Check the engine oil for a white milky appearance or excessive contamination.
• If the engine oil is milky, it is highly probable that it is contaminated with engine coolant. Repair or replace

damaged parts.

OIL LEAKAGE

Check for oil leakage around the following areas:
• Oil  pan
• Oil pan drain plug
• Oil pressure switch
• Oil filter
• Oil cooler
• Intake valve timing control cover
• Intake valve timing control solenoid valve
• Front cover
• Mating surface between cylinder block and cylinder head
• Mating surface between cylinder head and rocker cover
• Crankshaft oil seal (front and rear)

OIL PRESSURE CHECK

WARNING:

• Be careful not to burn yourself, as the engine and engine oil may be hot.
• Put the selector lever in the Park “P” position.
1.

Check the engine oil level. Refer to 

LU-24, "Inspection"

.

2.

Remove engine front undercover using power tool.

3.

Disconnect the oil pressure switch (A) harness connector.

4.

Remove the oil pressure switch (A).

CAUTION:

Do not drop or shock oil pressure switch.

SMA954C

WBIA0791E

2009 Pathfinder

ENGINE OIL

LU-25

< ON-VEHICLE MAINTENANCE >

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5.

Install Tools.

6.

Start the engine and warm it up to normal operating temperature.

7.

Check the engine oil pressure with engine running under no-load. Refer to 

LU-34, "Standard and Limit"

.

CAUTION:

If the difference is extreme, check the oil passages and oil pump for leaks and blockages.

8.

After the inspections, install oil pressure switch as follows:

a.

Remove old liquid gasket adhering to oil pressure switch and engine.

b.

Apply liquid gasket and tighten oil pressure switch to the specification.
Use Genuine RTV Silicone Sealant or equivalent. Refer to 

GI-26, "Recommended Chemical Prod-

ucts and Sealants"

.

c.

After warming up engine, make sure there is no leakage of engine oil with engine running.

Changing Engine Oil

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WARNING:

• Be careful not to burn yourself, as the engine and engine oil may be hot.
• Prolonged and repeated contact with used engine oil may cause skin cancer; try to avoid direct skin

contact with used oil. If skin contact is made, wash thoroughly with soap or hand cleaner as soon as
possible.

1.

Warm up the engine, and check for any oil leaks.

2.

Stop the engine and wait for at least 10 minutes.

3.

Remove the oil drain plug and oil filler cap to drain the old oil.

4.

Install a new washer on the oil drain plug, then install the oil drain plug in the oil pan.

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.

Tool number

: ST25051001 (J-25695-1)

: ST25052000 (J-25695-2)

WBIA0571E

Oil pressure switch torque

: 14.7 N·m (1.5 kg-m, 11 ft-lb)

Oil drain plug

: Refer to 

EM-175, "Removal and Installation"

.

Oil grade and viscosity

: Refer to 

MA-12, "Fluids and Lubricants"

.

Oil capacity

: Refer to 

MA-12, "Fluids and Lubricants"

.

2009 Pathfinder

LU-26

< ON-VEHICLE MAINTENANCE >

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ENGINE OIL

8.

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

LU-24, "Inspection"

.

CAUTION:

Do not overfill the engine with oil.

SMA954C

2009 Pathfinder

OIL FILTER

LU-27

< ON-VEHICLE MAINTENANCE >

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OIL FILTER

Removal and Installation

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REMOVAL

1.

Remove the engine front undercover access plate 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:

• The 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 the 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-27, "Removal and Installation"

.

5.

Install the engine front undercover access plate using power tool.

INSPECTION AFTER INSTALLATION

1.

Check the engine oil level. Refer to 

LU-24, "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 add engine oil as required.

Tool number

: KV10115801 (J-38956)

WBIA0388E

SMA010

Oil filter

: 17.7 N·m (1.8 kg-m, 13 ft-lb)

SMA229B

2009 Pathfinder

LU-28

< ON-VEHICLE REPAIR >

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OIL COOLER

ON-VEHICLE REPAIR

OIL COOLER

Exploded View

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Removal and Installation

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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-41, "Changing Engine Coolant"

 and

EM-225, "Disassembly and Assembly"

.

NOTE:
Perform this step only when removing water pipes and hoses.

2.

Remove engine front undercover using power tool.

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 oil filter. Refer to 

LU-27, "Removal and Installation"

.

WBIA0790E

1.

Oil pan

2.

Water hose

3.

Water pipe

4.

Water hose

5.

Connector bolt

6.

Oil filter

7.

Oil cooler

8.

O-ring

9.

Relief valve

10. Water hose

11.

Connector pipe

12. Gasket

A.

To thermostat housing

B.

Refer to 

LU-27

C.

To cylinder block

2009 Pathfinder

OIL COOLER

LU-29

< ON-VEHICLE REPAIR >

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5.

Remove connector bolt, and remove oil cooler.

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

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

• Tighten the connecting bolt after aligning the stopper on the oil pan

side with protrusion of the oil cooler.

INSPECTION AFTER INSTALLATION

1.

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

LU-24,

"Inspection"

 and 

CO-40, "System Inspection"

.

2.

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

3.

Stop the engine and wait for 10 minutes.

4.

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

LU-24, "Inspection"

 and 

CO-40, "Sys-

tem Inspection"

KBIA2500E

2009 Pathfinder

LU-30

< ON-VEHICLE REPAIR >

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OIL PUMP

OIL PUMP

Exploded View

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Removal and Installation

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REMOVAL

1.

Remove front cover. Refer to 

EM-186, "Exploded View"

. 

2.

Remove the oil pump drive spacer.

3.

Remove the oil pump assembly.

INSTALLATION

Installation is in the reverse order of removal, paying attention of the following:
• 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 oil pump inner rotor by hand.
• Make sure that each part is aligned and tap lightly until it reaches

the end.

INSPECTION AFTER INSTALLATION

1.

Check the engine oil level. Refer to 

LU-24, "Inspection"

2.

Start the engine and check for engine oil leaks.

WBIA0415E

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

KBIA2512E

KBIA2490E

2009 Pathfinder