Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Maxima 2006-2009 Approved Nissan Maxima 2007 CO
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B ENGINE
A
CO
SECTION
ENGINE COOLING SYSTEM C
D
E
CONTENTS
PRECAUTIONS ......................................................... 2
. RADIATOR ............................................................... 13
. F
Precautions for Supplemental Restraint System Removal and Installation ....................................... 13 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- REMOVAL .......................................................... 13.
SIONER" ................................................................. 2
. INSTALLATION .................................................. 14 . G
Precautions for Liquid Gasket ................................. 2 . COOLING FAN ......................................................... 15.
REMOVAL OF LIQUID GASKET SEALING ......... 2 . Removal and Installation ....................................... 15 .
LIQUID GASKET APPLICATION PROCEDURE 2 ..... REMOVAL .......................................................... 15.
H
PREPARATION .......................................................... 4
. INSTALLATION .................................................. 15 .
Special Service Tools .............................................. 4
. Disassembly and Assembly of Radiator Fan ......... 15 .
Commercial Service Tools ....................................... 4 . DISASSEMBLY .................................................. 15 .
OVERHEATING CAUSE ANALYSIS ......................... 5 . ASSEMBLY ........................................................ 15 . I
Troubleshooting Chart ............................................. 5
. WATER PUMP ......................................................... 16 .
COOLING SYSTEM ................................................... 7 . Removal and Installation ....................................... 16 .
Cooling Circuit ......................................................... 7
. REMOVAL .......................................................... 16. J
System Drawing ...................................................... 8
. INSPECTION AFTER REMOVAL ...................... 18 .
ENGINE COOLANT ................................................... 9 . INSTALLATION .................................................. 18 .
System Check ......................................................... 9
. THERMOSTAT AND THERMOSTAT HOUSING ..... 21 .
K
CHECKING COOLING SYSTEM HOSES ........... 9 . Removal and Installation ....................................... 21 .
CHECKING RESERVOIR LEVEL ........................ 9 . REMOVAL .......................................................... 21.
CHECKING COOLING SYSTEM FOR LEAKS..... 9 INSPECTION AFTER REMOVAL ...................... 21 .
CHECKING RADIATOR CAP ............................... 9 . INSTALLATION .................................................. 22 . L
CHECKING RADIATOR ..................................... 10 . WATER OUTLET AND WATER PIPING .................. 23 .
Changing Engine Coolant ..................................... 10 . Removal and Installation ....................................... 23 .
DRAINING ENGINE COOLANT ........................ 10 . REMOVAL .......................................................... 23. M
REFILLING ENGINE COOLANT ........................11 . INSTALLATION .................................................. 23 .
FLUSHING COOLING SYSTEM ........................ 12 . SERVICE DATA AND SPECIFICATIONS (SDS) ..... 25 .
Capacity ................................................................. 25
.
Thermostat ............................................................ 25
.
Radiator ................................................................. 25
.
Revision: May 2006 CO-1 2007 Maxima
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EBS00RD1
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:
G 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.
G 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.
G 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 EBS00RD2
REMOVAL OF LIQUID GASKET SEALING
G After removing nuts and bolts, separate the mating surface, using Tool and remove old liquid gasket seal-
ing.
Tool number : KV10111100 (J-37228)
CAUTION:
Be careful not to damage the mating surfaces.
G Tap Tool to insert it (1), and then slide it by tapping on the side
(2) as shown.
G In areas where Tool is difficult to use, use plastic hammer to
lightly tap the parts, to remove it.
CAUTION:
If for some unavoidable reason suitable tool such as screw-
driver is used, be careful not to damage the mating sur- WBIA0566E
faces.
LIQUID GASKET APPLICATION PROCEDURE
1. Remove old liquid gasket adhering to the liquid gasket applica-
tion surface and the mating surface, using scraper.
G Remove 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 materials.
PBIC0003E
Revision: May 2006 CO-2 2007 Maxima
PRECAUTIONS
3. Attach liquid gasket tube to Tool.
Tool number : WS39930000 ( -- ) A
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-46, "Recommended Chemical Products and Sealants" .
CO
4. Apply liquid gasket without breaks to the specified location with
the specified dimensions.
G If there is a groove for the liquid gasket application, apply liq-
C
uid gasket to the groove.
WBIA0567E D
G As for the bolt holes, normally apply liquid gasket inside the
holes. Occasionally, it should be applied outside the holes.
E
Make sure to read the text of service manual.
G Within five minutes of liquid gasket application, install the mat-
ing component.
F
G If liquid gasket protrudes, wipe it off immediately.
G Do not retighten nuts or bolts after the installation.
G After 30 minutes or more have passed from the installation, fill
G
engine oil and engine coolant.
CAUTION: SEM159F
If there are specific instructions in this manual, observe them.
H
I
J
K
L
M
Revision: May 2006 CO-3 2007 Maxima
PREPARATION
PREPARATION PFP:00002
Special Service Tools EBS00RD3
The actual shapes of Kent-Moore tools may from those of special service tools illustrated here.
Tool number Description
(Kent-Moore No.)
Tool name
WS39930000 Pressing the tube of liquid gasket
( -- )
Tube pressure
S-NT052
EG17650301 Adapting radiator cap tester to radiator cap
(J-33984-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
KV10111100 Removing chain tensioner cover and water
(J-37228) pump cover
Seal cutter
NT046
KV991J0070 Refilling engine cooling system
(J-45695)
Coolant Refill Tool
LMA053
-- Checking concentration of ethylene glycol in
(J-23688) engine coolant
Engine coolant refractometer
WBIA0539E
Commercial Service Tools EBS00RD4
Tool name Description
Power tool Loosening bolts and nuts
PBIC0190E
Revision: May 2006 CO-4 2007 Maxima
OVERHEATING CAUSE ANALYSIS
OVERHEATING CAUSE ANALYSIS PFP:00012
A
Troubleshooting Chart EBS00RD5
Symptom Check items
Water pump malfunction Worn or loose drive belt CO
Thermostat stuck closed --
Dust contamination or
C
Poor heat transfer Damaged fins paper clogging --
Physical damage
Clogged radiator cooling Excess foreign material D
tube (rust, dirt, sand, etc.)
Cooling fan does not oper-
ate
E
Reduced air flow High resistance to fan rota- Fan assembly --
tion
Damaged fan blades
F
Damaged radiator shroud -- -- --
Improper coolant mixture
Cooling sys- -- -- --
ratio G
tem parts
malfunction Poor coolant quality -- Coolant viscosity --
Loose clamp
Cooling hose H
Cracked hose
Water pump Poor sealing
Loose
Radiator cap I
Poor sealing
Coolant leaks
O-ring for damage, deterio-
Insufficient coolant ration or improper fitting J
Radiator
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank K
Cylinder head deterioration
Exhaust gas leaks into
Overflowing reservoir tank Cylinder head gasket dete-
cooling system L
rioration
M
Revision: May 2006 CO-5 2007 Maxima
OVERHEATING CAUSE ANALYSIS
Symptom Check items
High engine rpm under no
load
Driving in low gear for
Abusive driving
extended time
Driving at extremely high
speed
-- Overload on engine
Powertrain system mal-
function
Installed improper size
Except cool- --
wheels and tires
ing system
parts mal- Dragging brakes
function
Improper ignition timing
Blocked bumper --
Installed car brassiere
Blocked radiator grille Mud contamination or
Blocked or restricted air paper clogging --
flow
Blocked radiator --
Blocked condenser
Blocked air flow
Installed large fog lamp
Revision: May 2006 CO-6 2007 Maxima
COOLING SYSTEM
COOLING SYSTEM PFP:21020
A
Cooling Circuit EBS00RD6
CO
C
D
E
F
G
H
I
WBIA0759E
1. Cylinder block (RH) 2. Oil cooler 3. Cylinder head (RH) J
4. Water pump 5. Radiator 6. Water inlet
7. Thermostat 8. Cylinder head (LH) 9. Cylinder block (LH)
K
L
M
Revision: May 2006 CO-7 2007 Maxima
COOLING SYSTEM
System Drawing EBS00RD7
WBIA0760E
Revision: May 2006 CO-8 2007 Maxima
ENGINE COOLANT
ENGINE COOLANT PFP:KQ100
A
System Check EBS00RD8
WARNING:
G Never remove the radiator cap when the engine is hot. Serious burns could occur from high pres- CO
sure coolant escaping from the radiator.
G Wrap a thick cloth around the cap. Slowly push down and turn it a quarter turn to allow built-up
pressure to escape. Carefully remove the cap by pushing down and turning it all the way. C
CHECKING COOLING SYSTEM HOSES
Check hoses for the following:
G Improper attachment D
G Leaks
G Cracks
E
G Damage
G Loose connections
G Chafing F
G Deterioration
CHECKING RESERVOIR LEVEL
G Check if the reservoir tank coolant level is within MIN to MAX G
range when the engine is cool.
G Adjust coolant level if it is too much or too little.
H
I
J
SMA412B
CHECKING COOLING SYSTEM FOR LEAKS
To check for leaks, apply pressure to the cooling system using Tool. K
Tool number : EG17650301 (J-33984-A)
Testing pressure : 157 kPa (1.6 kg/cm2 , 23 psi) L
WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could occur from high pressure coolant escaping from M
the radiator.
CAUTION:
Higher pressure than specified may cause radiator damage. WBIA0568E
CHECKING RADIATOR CAP
1. Inspect the radiator cap.
G Replace the cap if the metal plunger cannot be seen around the edge of the black rubber gasket.
G Replace the cap if deposits of waxy residue or other foreign material are on the black rubber gasket or
the metal retainer.
NOTE:
Thoroughly wipe out the radiator filler neck to remove any waxy residue or foreign material.
Revision: May 2006 CO-9 2007 Maxima
ENGINE COOLANT
2. Pull the negative-pressure valve to open it and check that it
closes completely when released.
G Check that there is no dirt or damage on the valve seat of the
radiator cap negative-pressure valve.
G Check that there are no abnormalities in the opening and
closing conditions of the negative-pressure valve.
SMA967B
3. Check radiator cap relief pressure using Tool.
Tool number : EG17650301 (J-33984-A)
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