Nissan Pathfinder (2008 year). Manual - part 480

LU-2

Removal and Installation  ........................................

30

DISASSEMBLY AND ASSEMBLY  .............

32

OIL PUMP  ..........................................................

32

Disassembly and Assembly ....................................

32

SERVICE DATA AND SPECIFICATIONS 
(SDS) ..........................................................

34

SERVICE DATA AND SPECIFICATIONS 
(SDS) .................................................................

34

Standard and Limit ..................................................

34

PRECAUTIONS

LU-3

< PRECAUTION >

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PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"

INFOID:0000000001282172

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

Precaution for Liquid Gasket

INFOID:0000000001308809

REMOVAL OF LIQUID GASKET SEALING

• After removing the bolts and nuts, separate the mating surface and

remove the old liquid gasket sealing using Tool.

CAUTION:

Do not damage the mating surfaces.

• Tap the seal cutter to insert it.
• In areas where the Tool is difficult to use, lightly tap to slide it.

LIQUID GASKET APPLICATION PROCEDURE

1.

Remove the old liquid gasket adhering to the gasket application
surface and the mating surface using suitable tool.
• Remove the liquid gasket completely from the groove of the

liquid gasket application surface, bolts, and bolt holes.

2.

Thoroughly clean the mating surfaces and remove adhering
moisture, grease and foreign material.

Tool number

: KV10111100 (J-37228)

WBIA0566E

PBIC0003E

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PRECAUTIONS

3.

Attach the liquid gasket tube to the Tool.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-26, "Recommended Chemical Products and Sealants"

. 

4.

Apply the liquid gasket without breaks to the specified location
with the specified dimensions.

• If there is a groove for the liquid gasket application, apply the

liquid gasket to the groove.

• As for the bolt holes, normally apply the liquid gasket inside

the holes. If specified in the procedure, it should also be
applied outside the holes.

• Within five minutes of liquid gasket application, install the mat-

ing component.

• If the liquid gasket protrudes, wipe it off immediately.
• Do not retighten after the installation.
• Wait 30 minutes or more after installation before refilling the

engine with engine oil and engine coolant.

CAUTION:

If there are specific instructions in this manual, observe them.

Tool number

: WS39930000 (

—

)

WBIA0567E

SEM159F

PREPARATION

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PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000001308813

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tool

INFOID:0000000001282175

Tool number
(Kent-Moore No.)
Tool name

Description

ST25051001
(J-25695-1)
Oil pressure gauge

Measuring oil pressure
Maximum measuring range:

2,452 kPa (25 kg/cm

2

, 356 psi)

ST25052000
(J-25695-2)
Hose

Adapting oil pressure gauge to cylinder block

KV10111100
(J-37228)
Seal cutter

Removing steel oil pan and rear timing chain 
case

KV10115801
(J-38956)
Oil filter wrench

Removing and installing oil filter
a: 64.3 mm (2.531 in)

WS39930000
(

—

)

Tube presser

Pressing the tube of liquid gasket

S-NT050

S-NT559

NT046

S-NT375

S-NT052

LU-6

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PREPARATION

Tool name

Description

Power tool

Loosening nuts and bolts

Deep socket

Removing and installing oil pressure sensor
a: 24 mm (0.94 in)

PBIC0190E

PBIC2072E

LUBRICATION SYSTEM

LU-7

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FUNCTION DIAGNOSIS

LUBRICATION SYSTEM

Lubrication Circuit

INFOID:0000000001282176

System Chart

INFOID:0000000001282177

PBIC2821E

PBIC2822E

LU-8

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ENGINE OIL

ON-VEHICLE MAINTENANCE

ENGINE OIL

Inspection

INFOID:0000000001282178

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-10, "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 pans (lower and upper)
• Oil pan drain plug
• Oil pressure switch
• Oil filter
• Oil cooler
• Water pump cover
• Chain tensioner cover
• Intake valve timing control cover and intake valve timing control solenoid valve
• Mating surface between cylinder block and cylinder head
• Mating surface between lower cylinder block and cylinder block
• Mating surface between cylinder head and rocker cover
• Mating surface between front timing chain case and rear timing chain case
• Mating surface between rear timing chain case and cylinder head
• Mating surface between rear timing chain case and cylinder block
• Mating surface between rear timing chain case and lower cylinder block
• Mating surface between rear timing chain case and oil pan (upper)
• Crankshaft oil seals (front and rear)
• Oil level gauge guide
• Camshaft position sensor (PHASE)

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 engine oil level. Refer to 

LU-8, "Inspection"

.

2.

Remove engine undercover using power tool.

PBIC2823E

ENGINE OIL

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3.

Disconnect harness connector at oil pressure switch (B), and
remove oil pressure switch (B).

CAUTION:

Do not drop or shock oil pressure switch.
• A: Oil pan (upper)
•

⇒

: Front

4.

Install Tools.

5.

Start engine and warm it up to normal operating temperature.

6.

Check oil pressure with engine running under no-load.
NOTE:
When engine oil temperature is low, engine oil pressure becomes high.

Engine oil pressure [Engine oil temperature at 80

°

C (176

°

F)]

Unit: kPa (kg/cm

2

, psi)

CAUTION:

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

7.

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 running engine.

Changing Engine Oil

INFOID:0000000001308913

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.

WBIA0813E

Tool numbers

: ST25051001 (J-25695-1)

: ST25052000 (J-25695-2)

WBIA0571E

Engine Speed

Approximate Discharge Pressure

Idle speed

More than 98 (1.0, 14)

2,000

More than 294 (3.0, 43)

Oil pressure switch torque

: 14.7 N·m (1.5 kg-m, 11 ft-lb)