Lubrication Circuit ........................................................4
Oil Pressure Check......................................................6
Oil Pump ......................................................................6

REMOVAL AND INSTALLATION

.................................6

DISASSEMBLY AND ASSEMBLY

................................7

OIL PUMP INSPECTION

............................................7

REGULATOR VALVE INSPECTION

............................8

Oil Filter .......................................................................8
Oil Cooler.....................................................................9

REMOVAL AND INSTALLATION

.................................9

INSPECTION

.............................................................9

Service Data and Specifications (SDS).....................10

OIL PRESSURE

......................................................10

REGULATOR VALVE

...............................................10

OIL PUMP

...............................................................10

ENGINE COOLING SYSTEM........................................ 11

Precautions ................................................................ 11

LIQUID GASKET APPLICATION PROCEDURE

.......... 11

Preparation ................................................................ 11

SPECIAL SERVICE TOOLS

...................................... 11

Cooling Circuit ...........................................................12

System Check............................................................12

CHECKING COOLING SYSTEM HOSES

...................12

CHECKING RADIATOR

............................................12

CHECKING RADIATOR CAP

....................................13

CHECKING COOLING SYSTEM FOR LEAKS

............13

Water Pump ...............................................................14

REMOVAL AND INSTALLATION

...............................14

REMOVAL

...............................................................14

INSPECTION

...........................................................16

INSTALLATION

........................................................16

Thermostat.................................................................18

REMOVAL AND INSTALLATION

...............................18

INSPECTION

...........................................................18

Water Outlet and Water Piping..................................19

REMOVAL AND INSTALLATION

...............................19

Radiator .....................................................................20

REMOVAL AND INSTALLATION

...............................20

Cooling Fan Control System .....................................21
Refilling Engine Coolant ............................................21
Radiator (Aluminum type)..........................................21

PREPARATION

.......................................................21

DISASSEMBLY

........................................................22

ASSEMBLY

.............................................................22

INSPECTION

...........................................................24

Overheating Cause Analysis .....................................25
Service Data and Specifications (SDS).....................26

THERMOSTAT

........................................................26

RADIATOR

..............................................................26

IDX

Precautions

PRECAUTIONS FOR SUPPLEMENTAL RESTRAINT SYSTEM (SRS) “AIR BAG” AND “SEAT
BELT PRE-TENSIONER”

NHLC0036

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 sys-
tem 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 that is necessary to service the system safely is included in the RS section of this Service Manual.

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 per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the RS 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
harness connectors.

SEM164F

AEM080

LIQUID GASKET APPLICATION PROCEDURE

NHLC0001

Use a scraper to remove all traces of old liquid gasket from
mating surfaces and grooves. Also, completely clean any oil
from these areas.

Apply a continuous bead of liquid gasket to mating surfaces.
(Use Genuine RTV silicone sealant or equivalent. Refer to
GI-53.)

For oil pan, be sure liquid gasket diameter is 3.5 to 4.5 mm
(0.138 to 0.177 in) or 4.5 to 5.5 mm (0.177 to 0.217 in) as
specified in this manual.

Apply liquid gasket around the inner side of bolt holes (unless
otherwise specified).

Assembly should be done within 5 minutes after coating.

Wait at least 30 minutes before refilling engine oil and engine
coolant.

ENGINE LUBRICATION SYSTEM

Precautions

LC-2

Preparation

SPECIAL SERVICE TOOLS

=NHLC0002

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

Tool number
(Kent-Moore No.)
Tool name

Description

ST25051001
(J25695-1)
Oil pressure gauge

NT558

Measuring oil pressure
Maximum measuring range:
2,452 kPa (25 kg/cm

, 356 psi)

ST25052000
(J25695-2)
Hose

NT559

Adapting oil pressure gauge to upper oil pan

WS39930000
(

—

)

Tube pressure

NT052

Pressing the tube of liquid gasket

IDX

ENGINE LUBRICATION SYSTEM

Preparation

LC-3

Lubrication Circuit

NHLC0003

SLC489BB

ENGINE LUBRICATION SYSTEM

Lubrication Circuit

LC-4

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