Nissan Pathfinder (2009 year). Instruction — part 137
CO-4
< PRECAUTION >
[VQ40DE]
PRECAUTIONS
• After removing nuts and bolts, separate the mating surface and
remove old liquid gasket sealing using Tool.
CAUTION:
Be careful not to damage the mating surfaces.
• Tap seal cutter to insert it (1), and then slide it by tapping on the
side (2) as shown.
• In areas where Tool is difficult to use, use plastic hammer to lightly
tap the part, to remove it.
CAUTION:
If for some unavoidable reason tool such as screwdriver is
used, be careful not to damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1.
Remove the old liquid gasket adhering to the gasket application
surface and the mating surface using suitable tool.
• Remove liquid gasket completely from the groove of the gas-
ket application surface, bolts, and bolt holes.
2.
Thoroughly clean the mating surfaces and remove adhering
moisture, grease and foreign materials.
3.
Attach liquid gasket tube to the Tool.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-26, "Recommended Chemical Products and Sealants"
.
4.
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 bolt holes, normally apply the liquid gasket inside the
holes. Occasionally, it should be applied outside the holes.
Make sure to read the text of this instruction.
• Within five minutes of liquid gasket application, install the mat-
ing component.
• If the liquid gasket protrudes, wipe it off immediately.
• Do not retighten nuts or bolts 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 instruction, observe them.
Tool number
: KV10111100 (J-37228)
WBIA0566E
PBIC0003E
Tool number
: WS39930000 (
—
)
WBIA0567E
SEM159F
2009 Pathfinder
PREPARATION
CO-5
< PREPARATION >
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PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000003939385
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service Tool
INFOID:0000000003939386
Tool number
(Kent-Moore No.)
Tool name
Description
KV10111100
(J-37228)
Seal cutter
Removing chain tensioner cover and water
pump cover
WS39930000
(
—
)
Tube presser
Pressing the tube of liquid gasket
EG17650301
(J-33984-A)
Radiator cap tester adapter
Adapting radiator cap tester to radiator cap
and radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
KV991J0070
(J-45695)
Coolant refill tool
Filling cooling system
KV991J0010
(J-23688)
Engine coolant refractometer
Checking concentration of ethylene glycol in
engine coolant
NT046
S-NT052
S-NT564
LMA053
WBIA0539E
2009 Pathfinder
CO-6
< PREPARATION >
[VQ40DE]
PREPARATION
Tool name
Description
Power tool
Loosening bolts and nuts
Radiator cap tester
Checking radiator and radiator cap
Coolant system tester adapter
Adapting radiator cap tester to reservoir filler
neck
Coolant system tester adapter
Adapting radiator cap tester to reservoir cap
PBIC0190E
PBIC1982E
WBIA0408E
WBIA0409E
2009 Pathfinder
COOLING SYSTEM
CO-7
< FUNCTION DIAGNOSIS >
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FUNCTION DIAGNOSIS
COOLING SYSTEM
Cooling Circuit
INFOID:0000000003939387
WBIA0641E
1.
Cylinder block (RH)
2.
Oil cooler
3.
Cylinder head (RH)
4.
Water pump
5.
Radiator
6.
Water inlet
7.
Thermostat
8.
Cylinder head (LH)
9.
Heater pump
10. Cylinder block (LH)
2009 Pathfinder
CO-8
< FUNCTION DIAGNOSIS >
[VQ40DE]
COOLING SYSTEM
Schematic
INFOID:0000000003939388
WBIA0565E
2009 Pathfinder
OVERHEATING CAUSE ANALYSIS
CO-9
< FUNCTION DIAGNOSIS >
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OVERHEATING CAUSE ANALYSIS
Troubleshooting Chart
INFOID:0000000003939389
Symptom
Check items
Cooling sys-
tem parts
malfunction
Poor heat transfer
Water pump malfunction
Worn or loose drive belt
—
Thermostat stuck closed
—
Damaged fins
Dust contamination or pa-
per clogging
Physical damage
Clogged radiator cooling
tube
Excess foreign material
(rust, dirt, sand, etc.)
Reduced air flow
Cooling fan does not oper-
ate
Fan assembly
—
High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud
—
—
—
Improper engine coolant
mixture ratio
—
—
—
Poor engine coolant quality
—
Engine coolant viscosity
—
Insufficient engine coolant
Engine coolant leaks
Cooling hose
Loose clamp
Cracked hose
Heater pump
Physical damage
Water pump
Poor sealing
Radiator cap
Loose
Poor sealing
Radiator
O-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank
Cracked reservoir tank
Overflowing reservoir tank
Exhaust gas leaks into cool-
ing system
Cylinder head deterioration
Cylinder head gasket deteri-
oration
2009 Pathfinder
CO-10
< FUNCTION DIAGNOSIS >
[VQ40DE]
OVERHEATING CAUSE ANALYSIS
Except cool-
ing system
parts mal-
function
—
Overload on engine
Abusive driving
High engine rpm under no
load
Driving in low gear for ex-
tended time
Driving at extremely high
speed
Powertrain system malfunc-
tion
—
Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flow
Blocked bumper
—
—
Blocked radiator grille
Installed car brassiere
Mud contamination or paper
clogging
Blocked radiator
—
Blocked condenser
Blocked air flow
Installed large fog lamp
Symptom
Check items
2009 Pathfinder
ENGINE COOLANT
CO-11
< ON-VEHICLE MAINTENANCE >
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ON-VEHICLE MAINTENANCE
ENGINE COOLANT
System Inspection
INFOID:0000000003939390
WARNING:
• Never remove the radiator/reservoir cap when the engine is hot. Serious burns could occur from
high pressure fluid escaping from the radiator or reservoir.
• Wrap a thick cloth around the cap. Slowly push down and turn it a quarter turn to allow built-up pres-
sure to escape. Carefully remove the cap by pushing down and turning it all the way.
CHECKING COOLING SYSTEM HOSES
Check hoses for the following:
• Improper attachment
• Leaks
• Cracks
• Damage
• Loose connections
• Chafing
• Deterioration
CHECKING RESERVOIR LEVEL
• Check if the engine coolant reservoir tank level is within MIN to
MAX when the engine is cool.
• Adjust engine coolant level as necessary.
CHECKING COOLING SYSTEM FOR LEAKS
WARNING:
Never remove the radiator/reservoir cap when the engine is hot. Serious burns could occur from high
pressure coolant escaping from the radiator or reservoir.
• To check for leakage, apply pressure to the cooling system at the
reservoir filler neck using suitable tool and Tool.
CAUTION:
Higher pressure than specified may cause radiator damage.
NOTE:
In case that engine coolant decreases, replenish cooling system
with engine coolant.
• If any concerns are found, repair or replace damaged parts.
CHECKING RESERVOIR CAP
SMA412B
Tool number
: EG17650301 (J-33984-A)
Testing pressure
: 137 kPa (1.4 kg/cm
2
, 20 psi)
WBIA0568E
2009 Pathfinder
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