Nissan Pathfinder (2012 year). Instruction — part 459

LU-10

< PERIODIC MAINTENANCE >

[VQ40DE]

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 oil leaks. Repair as neces-

sary.

7. Stop the engine and wait for more than 10 minutes.
8. Check the oil level using the dipstick as shown. Add oil as nec-

essary and install the oil filler cap. Refer to

LU-8, "Inspection"

.

CAUTION:

Do not overfill the engine with oil.

9. Install engine under cover. Refer to

EXT-15, "Removal and

Installation"

.

Oil grade and viscosity

: Refer to

MA-18, "FOR USA AND CANADA : Flu-

ids and Lubricants"

and

MA-19, "FOR USA AND

CANADA : SAE Viscosity Number"

(United

States and Canada) or

MA-20, "FOR MEXICO :

Fluids and Lubricants"

and

MA-20, "FOR MEXI-

CO : SAE Viscosity Number"

(Mexico).

Oil capacity

: Refer to

LU-19, "Standard and Limit"

.

PBIC2823E

August 2012

2012 Pathfinder

OIL FILTER

LU-11

< PERIODIC MAINTENANCE >

[VQ40DE]

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OIL FILTER

Removal and Installation

INFOID:0000000007357876

REMOVAL

1. Remove the engine under cover access cover.
2. Drain engine oil. Refer to

LU-9, "Changing Engine Oil"

.

3. 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, position 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 new oil filter seal as shown.

3. Screw on the oil filter instructionly until it touches the installation

surface, then tighten it by 2/3 turn as shown. Or tighten to speci-

fication.

4. Refill engine with new engine oil. Refer to

LU-9, "Changing Engine Oil"

.

5. Inspect the engine for oil leaks. Repair as necessary.
6. Install the engine under cover access cover.

INSPECTION AFTER INSTALLATION

1. Check the engine oil level. Refer to

LU-8, "Inspection"

.

2. Start the engine and check for engine oil leaks. Repair as necessary.
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)

LBIA0425E

SMA010

Oil filter

: 17.7 N·m (1.8 kg-m, 13 ft-lb)

SMA702C

August 2012

2012 Pathfinder

LU-12

< REMOVAL AND INSTALLATION >

[VQ40DE]

OIL COOLER

REMOVAL AND INSTALLATION

OIL COOLER

Exploded View

INFOID:0000000007357877

Removal and Installation

INFOID:0000000007357878

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.

NOTE:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-

ing.

REMOVAL

1. Drain engine coolant from radiator and cylinder block. Refer to

CO-12, "Changing Engine Coolant"

and

EM-105, "Disassembly and Assembly"

.

2. Remove engine front under cover and air dam using power tool. Refer to

EXT-15, "Removal and Installa-

tion"

.

3. Disconnect water hoses from oil cooler.

CAUTION:

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

August 2012

2012 Pathfinder

OIL COOLER

LU-13

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[VQ40DE]

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Perform this step when engine is cold.

4. Remove oil filter. Refer to

LU-11, "Removal and Installation"

.

5. Remove connector bolt, oil cooler, and O-ring.

CAUTION:

Do not reuse O-ring.

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 necessary, replace relief valve.

INSTALLATION

Installation is in the reverse order of removal, paying attention to the following.

• If replacement of the relief valve is necessary, install the new relief valve in place by tapping it in using suit-

able tool.

CAUTION:

Do not reuse relief valve.

• 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.

CAUTION:

Do not reuse O-ring.

INSPECTION AFTER INSTALLATION

• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required

quantity, fill to the specified level. Refer to

MA-18, "FOR USA AND CANADA : Fluids and Lubricants"

(United

States and Canada) or

MA-20, "FOR MEXICO : Fluids and Lubricants"

(Mexico).

• Use procedure below to check for fuel leakage.

• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-

age at connection points.

• Start engine. With engine speed increased, check again for fuel leakage at connection points.

• Run engine to check for unusual noise and vibration.

NOTE:

If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide

may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop

after hydraulic pressure rises.

• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including

engine oil and engine coolant.

• Bleed air from passages in lines and hoses, such as in cooling system.

• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-

ified level, if necessary.

• Summary of the inspection items:

PBIC2825E

Item

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Transmission/
transaxle fluid

A/T and CVT Models

Leakage

Level/Leakage

Leakage

M/T Models

Level/Leakage

Leakage

Level/Leakage

Other oils and fluids*

Level

Leakage

Level

August 2012

2012 Pathfinder

LU-14

< REMOVAL AND INSTALLATION >

[VQ40DE]

OIL COOLER

*Power steering fluid, brake fluid, etc.

Fuel

Leakage

Leakage

Leakage

Exhaust gas

—

Leakage

—

Item

Before starting engine

Engine running

After engine stopped

August 2012

2012 Pathfinder

OIL PUMP

LU-15

< REMOVAL AND INSTALLATION >

[VQ40DE]

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OIL PUMP

Exploded View

INFOID:0000000007357879

Removal and Installation

INFOID:0000000007357880

REMOVAL

1. Disconnect the battery negative terminal. Refer to

PG-76, "Removal and Installation"

.

2. Remove the front final drive (4WD models). Refer to

FAX-10, "Removal and Installation"

.

3. Remove the nuts and bolts of the steering gear assembly, using power tool, then remove the crossmem-

ber from the vehicle and support the steering gear assembly with a suitable wire.

4. Remove the air duct and resonator assembly and the air cleaner case (upper). Refer to

EM-26, "Exploded

View"

.

5. Remove front timing chain case. Refer to

EM-53, "Removal and Installation"

.

6. Remove timing chain (primary) only. Refer to

EM-61, "Removal and Installation"

.

7. 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

• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required

quantity, fill to the specified level. Refer to

MA-18, "FOR USA AND CANADA : Fluids and Lubricants"

(United

States and Canada) or

MA-20, "FOR MEXICO : Fluids and Lubricants"

(Mexico).

• Use procedure below to check for fuel leakage.

• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-

age at connection points.

• Start engine. With engine speed increased, check again for fuel leakage at connection points.

• Run engine to check for unusual noise and vibration.

NOTE:

If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide

may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop

after hydraulic pressure rises.

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

August 2012

2012 Pathfinder

LU-16

< REMOVAL AND INSTALLATION >

[VQ40DE]

OIL PUMP

• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including

engine oil and engine coolant.

• Bleed air from passages in lines and hoses, such as in cooling system.

• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-

ified level, if necessary.

• Summary of the inspection items:

*Power steering fluid, brake fluid, etc.

Item

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Transmission/
transaxle fluid

A/T and CVT Models

Leakage

Level/Leakage

Leakage

M/T Models

Level/Leakage

Leakage

Level/Leakage

Other oils and fluids*

Level

Leakage

Level

Fuel

Leakage

Leakage

Leakage

Exhaust gas

—

Leakage

—

August 2012

2012 Pathfinder

OIL PUMP

LU-17

< UNIT DISASSEMBLY AND ASSEMBLY >

[VQ40DE]

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UNIT DISASSEMBLY AND ASSEMBLY

OIL PUMP

Disassembly and Assembly

INFOID:0000000007357881

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)
Refer to

LU-19, "Standard and Limit"

.

Inner rotor to outer rotor tip (position 2)
Refer to

LU-19, "Standard and Limit"

.

PBIC2827E

Body to inner rotor (position 3)
Refer to

LU-19, "Standard and Limit"

.

Body to outer rotor (position 4)
Refer to

LU-19, "Standard and Limit"

.

PBIC2828E

PBIC0821E

Inner rotor to brazed portion of housing
clearance
Refer to

LU-19, "Standard and Limit"

.

August 2012

2012 Pathfinder