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ENGINE COOLING SYSTEM

B ENGINE

ENGINE COOLING SYSTEM
SECTION CO CO

E
CONTENTS
PRECAUTIONS ......................................................... 2. RADIATOR (ALUMINUM TYPE) .............................. 16 . F
Precautions for Battery Service ............................... 2 . Disassembly and Assembly ................................... 16 .
Precautions for Supplemental Restraint System PREPARATION .................................................. 16 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- DISASSEMBLY .................................................. 16 . G
SIONER" ................................................................. 2
. ASSEMBLY ........................................................ 17 .
Precautions for Liquid Gasket ................................. 2 . INSPECTION ..................................................... 19 .
REMOVAL OF LIQUID GASKET SEALING ......... 2 . COOLING FAN ......................................................... 20.
H
LIQUID GASKET APPLICATION PROCEDURE 2 ..... Removal and Installation ....................................... 20 .
PREPARATION .......................................................... 4
. REMOVAL .......................................................... 20.
Special Service Tools .............................................. 4. INSTALLATION .................................................. 20 .
Commercial Service Tools ....................................... 5 . DISASSEMBLY AND ASSEMBLY ...................... 20 . I
OVERHEATING CAUSE ANALYSIS ......................... 6 . WATER PUMP ......................................................... 22 .
Troubleshooting Chart ............................................. 6 . Removal and Installation ....................................... 22 .
COOLING SYSTEM ................................................... 8 . REMOVAL .......................................................... 22. J
Cooling Circuit ......................................................... 8
. INSPECTION AFTER REMOVAL ...................... 24 .
System Chart .......................................................... 9
. INSTALLATION .................................................. 24 .
ENGINE COOLANT ................................................. 10 . INSPECTION AFTER INSTALLATION ............... 25 .
K
Inspection .............................................................. 10
. WATER INLET AND THERMOSTAT ASSEMBLY ... 27
LEVEL CHECK .................................................. 10 . Removal and Installation ....................................... 27 .
LEAK CHECK .................................................... 10 . REMOVAL .......................................................... 27.
Changing Engine Coolant ..................................... 10 . INSPECTION AFTER REMOVAL ...................... 27 . L
DRAINING ENGINE COOLANT ........................ 10 . INSTALLATION .................................................. 27 .
REFILLING ENGINE COOLANT ........................11 . INSPECTION AFTER INSTALLATION ............... 28 .
FLUSHING COOLING SYSTEM ........................ 12 . WATER OUTLET AND WATER PIPING .................. 29 . M
RADIATOR ............................................................... 13
. Removal and Installation ....................................... 29 .
Removal and Installation ....................................... 13 . REMOVAL .......................................................... 29.
REMOVAL .......................................................... 13
. INSTALLATION .................................................. 29 .
INSTALLATION .................................................. 14 . INSPECTION AFTER INSTALLATION ............... 29 .
INSPECTION AFTER INSTALLATION .............. 15 . SERVICE DATA AND SPECIFICATIONS (SDS) ..... 31 .
Checking Radiator Cap ......................................... 15 . Engine Coolant Capacity (Approximate) ............... 31 .
Checking Radiator ................................................. 15. Radiator ................................................................. 31
.
Thermostat ............................................................ 31
.
Tightening Torque .................................................. 31.

CO-1
PRECAUTIONS

PRECAUTIONS PFP:00001

Precautions for Battery Service ABS00B3M

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" ABS00A1N

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 ABS00A1O

REMOVAL OF LIQUID GASKET SEALING
q After removing mounting bolts and nuts, separate the mating
surface using seal cutter (SST) and remove old liquid gasket
sealing.
CAUTION:
Be careful not to damage the mating surfaces.
q In areas where seal cutter (SST) is difficult to use, use plastic
hammer to lightly tap (1) seal cutter where liquid gasket is
applied. Use plastic hammer to slide seal cutter (2) by tapping
on the side.
CAUTION:
If for some unavoidable reason tool such as flat-bladed PBIC0002E

screwdriver is used, be careful not to damage the mating
surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using scraper, remove old liquid gasket adhering to the liquid
gasket application surface and the mating surface.
q Remove liquid gasket completely from the groove of the liquid
gasket application surface, mounting bolts, and bolt holes.
2. Wipe the liquid gasket application surface and the mating sur-
face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.

PBIC0003E

CO-2
PRECAUTIONS

3. Attach liquid gasket tube to tube presser [SST: WS39930000
( -- )]. A
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-47, "RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
CO
4. Apply liquid gasket without breaks to the specified location with
the specified dimensions.
q If there is a groove for the liquid gasket application, apply liq-
C
uid gasket to the groove.

EMA0622D

D
q As for the bolt holes, normally apply liquid 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 liquid gasket application, install the mat-
ing component.
q If liquid gasket protrudes, wipe it off immediately.
F
q Do not retighten mounting bolts or nuts after the installation.

q After 30 minutes or more have passed from the installation, fill
engine oil and engine coolant. G
CAUTION: SEM159F
If there are specific instructions in this manual, observe them.
H

CO-3
PREPARATION

PREPARATION PFP:00002

Special Service Tools ABS00A1P

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

EG17650301 Adapting radiator cap tester to radiator cap
(J33984-A) and radiator filler neck
Radiator cap tester adapter a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)

S-NT564

KV99103510 Installing radiator upper and lower tanks
(

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