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Nissan Pathfinder (2008 year). Manual - part 482

LU-18

< PRECAUTION >

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PRECAUTIONS

PRECAUTION

PRECAUTIONS

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

INFOID:0000000001297358

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

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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

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.

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

Tool number

: KV10111100 (J-37228)

WBIA0566E

PBIC0003E

PRECAUTIONS

LU-19

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Attach the liquid gasket tube to the Tool.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

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

LU-20

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PREPARATION

PREPARATION

Special Service Tool

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

Commercial Service Tool

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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

, 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

PREPARATION

LU-21

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Tool name

Description

Power tool

Loosening bolts and nuts

Deep socket

Removing and installing oil pressure switch
Deep socket 26 mm

PBIC0190E

NT818

LU-22

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LUBRICATION SYSTEM

FUNCTION DIAGNOSIS

LUBRICATION SYSTEM

Lubrication Circuit

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WBIA0399E

Exhaust camshaft

Intake camshaft

Main oil galley

Chain tensioner (Left bank)

Oil filter

Oil cooler

Oil pan

Oil strainer

Oil pump

10. Chain tensioner (Right bank)

LUBRICATION SYSTEM

LU-23

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System Chart

INFOID:0000000001308865

PBIC0134E

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-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 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"

Remove engine front undercover using power tool.

Disconnect the oil pressure switch (A) harness connector.

Remove the oil pressure switch (A).

CAUTION:

Do not drop or shock oil pressure switch.

SMA954C

WBIA0791E

ENGINE OIL

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Install Tools.

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

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

Engine oil pressure [Engine oil temperature at 80

C (175

F)]

Unit: kPa (kg/cm

, psi)

CAUTION:

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

After the inspections, install oil pressure switch as follows:

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

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"

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

Changing Engine Oil

INFOID:0000000001308889

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.

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

Stop the engine and wait for at least 10 minutes.

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

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.

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.

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

Stop the engine and wait for more than 10 minutes.

Tool number

: ST25051001 (J-25695-1)

: ST25052000 (J-25695-2)

WBIA0571E

Engine Speed

Approximate Discharge Pressure

Idle speed

More than 98 (1.0, 14)

2,000 rpm

More than 294 (3.0, 43)