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ENGINE COOLING SYSTEM

B ENGINE

ENGINE COOLING SYSTEM
SECTION CO CO

E
CONTENTS
PRECAUTIONS ......................................................... 2. ASSEMBLY ........................................................ 14 . F
Precautions for Supplemental Restraint System Checking Radiator Cap ......................................... 14 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Checking Radiator ................................................. 15 .
SIONER" ................................................................. 2
. RADIATOR (ALUMINUM TYPE) .............................. 16 . G
Precautions for Liquid Gasket ................................. 2 . Disassembly and Assembly ................................... 16 .
REMOVAL OF LIQUID GASKET SEALING ......... 2 . PREPARATION .................................................. 16 .
LIQUID GASKET APPLICATION PROCEDURE 2 ..... DISASSEMBLY .................................................. 16 .
H
PREPARATION .......................................................... 4
. ASSEMBLY ........................................................ 17 .
Special Service Tools .............................................. 4. INSPECTION ..................................................... 19 .
Commercial Service Tools ....................................... 4 . WATER PUMP ......................................................... 20 .
OVERHEATING CAUSE ANALYSIS ......................... 5 . Removal and Installation ....................................... 20 . I
Troubleshooting Chart ............................................. 5 . REMOVAL .......................................................... 20.
COOLING SYSTEM ................................................... 7 . INSPECTION AFTER REMOVAL ...................... 22 .
Cooling Circuit ......................................................... 7
. INSTALLATION .................................................. 22 . J
ENGINE COOLANT ................................................... 8 . THERMOSTAT AND THERMOSTAT HOUSING ..... 24 .
Inspection ................................................................ 8
. Removal and Installation ....................................... 24 .
LEVEL CHECK .................................................... 8 . REMOVAL .......................................................... 24.
K
LEAK CHECK ...................................................... 8 . INSPECTION AFTER REMOVAL ...................... 25 .
Changing Engine Coolant ....................................... 8 . INSTALLATION .................................................. 25 .
DRAINING ENGINE COOLANT .......................... 8 . WATER OUTLET AND WATER PIPING .................. 26 .
REFILLING ENGINE COOLANT ....................... 10 . Removal and Installation ....................................... 26 . L
FLUSHING COOLING SYSTEM .........................11 . REMOVAL .......................................................... 26.
RADIATOR ............................................................... 12
. INSTALLATION .................................................. 26 .
Removal and Installation ....................................... 12 . SERVICE DATA AND SPECIFICATIONS (SDS) ..... 27 . M
REMOVAL .......................................................... 12
. Engine Coolant Capacity (Approximate) ............... 27 .
INSTALLATION .................................................. 13 . Thermostat ............................................................ 27
.
Disassembly and Assembly Radiator Cooling Fan 14 ... Radiator ................................................................. 27
.
DISASSEMBLY .................................................. 14 . Tightening Torque .................................................. 27.

Revision; 2004 April CO-1 2003 Murano
PRECAUTIONS

PRECAUTIONS PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" ABS004RH

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 SRS and SB section of this Service Man-
ual.
WARNING:
q 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 per-
formed by an authorized NISSAN/INFINITI dealer.
q 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 SRS section.
q 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.
Precautions for Liquid Gasket ABS004RI

REMOVAL OF LIQUID GASKET SEALING
q After removing the mounting bolts and nuts, separate the mating
surface using a seal cutter and remove the liquid gasket sealing.
CAUTION:
Be careful not to damage the mating surfaces.
q In areas where the cutter is difficult to use, use a plastic hammer
to lightly tap the area where the liquid gasket is applied.
CAUTION:
If for some unavoidable reason a tool such as a flat-bladed
screwdriver is used, be careful not to damage the mating
surfaces.
PBIC0002E

LIQUID GASKET APPLICATION PROCEDURE
1. Using a scraper, remove the old liquid gasket adhering to the
gasket application surface and the mating surface.
q Remove the liquid gasket completely from the groove of the
gasket application surface, mounting bolts, and bolt holes.
2. Wipe the gasket application surface and the mating surface with
white gasoline (lighting and heating use) to remove adhering
moisture, grease and foreign materials.
3. Attach the liquid gasket tube to the tube presser.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-46, "RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS". PBIC0003E

Revision; 2004 April CO-2 2003 Murano
PRECAUTIONS

4. Apply the liquid gasket without breaks to the specified location
with the specified dimensions. A
q If there is a groove for the liquid gasket application, apply the
gasket to the groove.
CO

EMA0622D

D
q As for the bolt holes, normally apply the gasket inside the
holes. Occasionally, it should be applied outside the holes.
Make sure to read the text of service manual.
E
q Within five minutes of gasket application, install the mating
component.
q If the liquid gasket protrudes, wipe it off immediately.
F
q Do not retighten after the installation.
q After 30 minutes or more have passed from the installation, fill
the engine oil and engine coolant. G
CAUTION: SEM159F
If there are specific instructions in this manual, observe
them.
H

Revision; 2004 April CO-3 2003 Murano
PREPARATION

PREPARATION PFP:00002

Special Service Tools ABS0035A

The actual shapes of Kent-Moore tools may from those of special service tools illustrated here.
Tool number
(Kent-Moore No.) Description
Tool name

WS39930000 Pressing the tube of liquid gasket
(

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