Nissan Frontier D40. Instruction — part 185
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ENGINE
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SECTION
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CONTENTS
ENGINE COOLING SYSTEM
QR25DE
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Precaution for Liquid Gasket . . . . . . . . .....
PREPARATION . . . . . . . . . . .
PREPARATION . . . . . . . . . . . . ...
Special Service Tool . . . . . . . . . . . .....
Commercial Service Tool . . . . . . . . . . ..
FUNCTION DIAGNOSIS . . . . . . . ...
COOLING SYSTEM . . . . . . . . . . .
Cooling Circuit . . . . . . . . . . . . . . ...
Schematic . . . . . . . . . . . . . . . .....
OVERHEATING CAUSE ANALYSIS . . . . ..
Troubleshooting Chart . . . . . . . . . . . ...
ON-VEHICLE MAINTENANCE . . . . .
ENGINE COOLANT . . . . . . . . . . ...
System Inspection . . . . . . . . . . . . ...
Changing Engine Coolant . . . . . . . . . ...
ON-VEHICLE REPAIR . . . . . . . . .
RADIATOR . . . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
Checking Radiator . . . . . . . . . . . . ...
COOLING FAN . . . . . . . . . . . . ...
Exploded View . . . . . . . . . . . . . .
Removal and Installation (Crankshaft driven type)
WATER PUMP . . . . . . . . . . . . ...
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
THERMOSTAT AND THERMOSTAT HOUS-
ING . . . . . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . . .
Removal and Installation Thermostat . . . . . ..
Exploded View . . . . . . . . . . . . . . .
Removal and Installation Water Pump and Ther-
mostat Housing . . . . . . . . . . . . . .
WATER CONTROL VALVE . . . . . . . ..
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
WATER OUTLET AND WATER PIPING . . ..
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . . .
Standard and Limit . . . . . . . . . . . . ..
VQ40DE
PRECAUTION . . . . . . . . . . . ..
PRECAUTIONS . . . . . . . . . . . . .
Precaution for Liquid Gasket . . . . . . . . ...
PREPARATION . . . . . . . . . . ...
PREPARATION . . . . . . . . . . . . .
Special Service Tool . . . . . . . . . . . .
Commercial Service Tool . . . . . . . . . .
CO-2
COOLING SYSTEM . . . . . . . . . . ...
Cooling Circuit . . . . . . . . . . . . . ....
Schematic . . . . . . . . . . . . . . . ...
OVERHEATING CAUSE ANALYSIS . . . .
Troubleshooting Chart . . . . . . . . . . ....
ON-VEHICLE MAINTENANCE . . . . ...
ENGINE COOLANT . . . . . . . . . . ...
System Inspection . . . . . . . . . . . . ..
Changing Engine Coolant . . . . . . . . . ...
ON-VEHICLE REPAIR . . . . . . . .
RADIATOR . . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . ....
Removal and Installation . . . . . . . . . ....
Checking Radiator . . . . . . . . . . . . ..
ENGINE COOLING FAN . . . . . . . . ...
Exploded View . . . . . . . . . . . . . ....
Removal and Installation (Crankshaft driven type) ...
Removal and Installation (Motor driven type) . . .
WATER PUMP . . . . . . . . . . . . ...
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
WATER INLET AND THERMOSTAT ASSEM-
BLY . . . . . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
WATER OUTLET AND WATER PIPING . . ..
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . ..
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . . .
PRECAUTIONS
CO-3
< PRECAUTION >
[QR25DE]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005575332
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 SR and SB section of this Service Man-
ual.
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 personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Instruction. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution for Liquid Gasket
INFOID:0000000005276077
REMOVAL OF LIQUID GASKET SEALING
• After removing nuts and bolts, separate the mating surface, using Tool and remove old liquid gasket sealing.
CAUTION:
Be careful not to damage the mating surfaces.
• Tap (1) Tool to insert it, and then slide (2) it by tapping on the side
as shown.
• 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 surfaces.
LIQUID GASKET APPLICATION PROCEDURE
Tool number
: KV10111100 (J-37228)
WBIA0566E
CO-4
< PRECAUTION >
[QR25DE]
PRECAUTIONS
1.
Remove the old liquid gasket adhering to the gasket application
surface and the mating surface using suitable tool.
• Remove the 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 material.
3.
Attach the liquid gasket tube to the Tool.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-22, "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 the bolt holes, normally apply the liquid gasket inside
the holes. If specified in the procedure, it should also be
applied outside the holes.
• Within five minutes of liquid gasket application, install the mat-
ing component.
• If the liquid gasket protrudes, wipe it off immediately.
• Do not retighten 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.
PBIC0003E
Tool number
: WS39930000 (
—
)
WBIA0567E
SEM159F
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