Nissan Pathfinder (2008 year). Manual — part 480
LU-2
Removal and Installation . . . . . . . . . ....
DISASSEMBLY AND ASSEMBLY . . . .
OIL PUMP . . . . . . . . . . . . . . ..
Disassembly and Assembly . . . . . . . . ....
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . ..
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . . .
PRECAUTIONS
LU-3
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001282172
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
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
Precaution for Liquid Gasket
INFOID:0000000001308809
REMOVAL OF LIQUID GASKET SEALING
• After removing the bolts and nuts, separate the mating surface and
remove the old liquid gasket sealing using Tool.
CAUTION:
Do not damage the mating surfaces.
• Tap the seal cutter to insert it.
• In areas where the Tool is difficult to use, lightly tap to slide it.
LIQUID GASKET APPLICATION PROCEDURE
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.
Tool number
: KV10111100 (J-37228)
WBIA0566E
PBIC0003E
LU-4
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PRECAUTIONS
3.
Attach the 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 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 manual, observe them.
Tool number
: WS39930000 (
—
)
WBIA0567E
SEM159F
PREPARATION
LU-5
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PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000001308813
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service Tool
INFOID:0000000001282175
Tool number
(Kent-Moore No.)
Tool name
Description
ST25051001
(J-25695-1)
Oil pressure gauge
Measuring oil pressure
Maximum measuring range:
2,452 kPa (25 kg/cm
2
, 356 psi)
ST25052000
(J-25695-2)
Hose
Adapting oil pressure gauge to cylinder block
KV10111100
(J-37228)
Seal cutter
Removing steel oil pan and rear timing chain
case
KV10115801
(J-38956)
Oil filter wrench
Removing and installing oil filter
a: 64.3 mm (2.531 in)
WS39930000
(
—
)
Tube presser
Pressing the tube of liquid gasket
S-NT050
S-NT559
NT046
S-NT375
S-NT052
LU-6
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PREPARATION
Tool name
Description
Power tool
Loosening nuts and bolts
Deep socket
Removing and installing oil pressure sensor
a: 24 mm (0.94 in)
PBIC0190E
PBIC2072E
LUBRICATION SYSTEM
LU-7
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FUNCTION DIAGNOSIS
LUBRICATION SYSTEM
Lubrication Circuit
INFOID:0000000001282176
System Chart
INFOID:0000000001282177
PBIC2821E
PBIC2822E
LU-8
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ENGINE OIL
ON-VEHICLE MAINTENANCE
ENGINE OIL
Inspection
INFOID:0000000001282178
OIL LEVEL
• Before starting the engine make sure the vehicle is parked on a flat
and level surface, then check the oil level. If the engine is already
running, turn it off and allow 10 minutes before checking.
• Pull out oil level gauge and wipe clean.
• Insert oil level gauge.
• Check that the oil level is within the low (L) and high (H) range as
indicated on the dipstick.
• If the engine oil level is out of range, add oil as necessary. Refer to
MA-10, "Fluids and Lubricants"
.
CAUTION:
Do not overfill the engine with oil.
OIL APPEARANCE
• Check the engine oil for a white milky appearance or excessive contamination.
• If the engine oil is milky, it is highly probable that it is contaminated with engine coolant. Repair or replace
damaged parts.
OIL LEAKAGE
Check for oil leakage around the following areas:
• Oil pans (lower and upper)
• Oil pan drain plug
• Oil pressure switch
• Oil filter
• Oil cooler
• Water pump cover
• Chain tensioner cover
• Intake valve timing control cover and intake valve timing control solenoid valve
• Mating surface between cylinder block and cylinder head
• Mating surface between lower cylinder block and cylinder block
• Mating surface between cylinder head and rocker cover
• Mating surface between front timing chain case and rear timing chain case
• Mating surface between rear timing chain case and cylinder head
• Mating surface between rear timing chain case and cylinder block
• Mating surface between rear timing chain case and lower cylinder block
• Mating surface between rear timing chain case and oil pan (upper)
• Crankshaft oil seals (front and rear)
• Oil level gauge guide
• Camshaft position sensor (PHASE)
OIL PRESSURE CHECK
WARNING:
• Be careful not to burn yourself, as the engine and engine oil may be hot.
• Put the selector lever in the Park "P" position.
1.
Check engine oil level. Refer to
.
2.
Remove engine undercover using power tool.
PBIC2823E
ENGINE OIL
LU-9
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3.
Disconnect harness connector at oil pressure switch (B), and
remove oil pressure switch (B).
CAUTION:
Do not drop or shock oil pressure switch.
• A: Oil pan (upper)
•
⇒
: Front
4.
Install Tools.
5.
Start engine and warm it up to normal operating temperature.
6.
Check oil pressure with engine running under no-load.
NOTE:
When engine oil temperature is low, engine oil pressure becomes high.
Engine oil pressure [Engine oil temperature at 80
°
C (176
°
F)]
Unit: kPa (kg/cm
2
, psi)
CAUTION:
If the difference is extreme, check the oil passages and oil pump for leaks and blockages.
7.
After the inspections, install oil pressure switch as follows:
a.
Remove old liquid gasket adhering to oil pressure switch and engine.
b.
Apply liquid gasket and tighten oil pressure switch to the specification.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-26, "Recommended Chemical Prod-
.
c.
After warming up engine, make sure there is no leakage of engine oil with running engine.
Changing Engine Oil
INFOID:0000000001308913
WARNING:
• Be careful not to burn yourself, as the engine and engine oil may be hot.
• Prolonged and repeated contact with used engine oil may cause skin cancer; try to avoid direct skin
contact with used oil. If skin contact is made, wash thoroughly with soap or hand cleaner as soon as
possible.
1.
Warm up the engine, and check for any oil leaks.
2.
Stop the engine and wait for at least 10 minutes.
3.
Remove the oil drain plug and oil filler cap to drain the old oil.
4.
Install a new washer on the oil drain plug, then install the oil drain plug in the oil pan.
WBIA0813E
Tool numbers
: ST25051001 (J-25695-1)
: ST25052000 (J-25695-2)
WBIA0571E
Engine Speed
Approximate Discharge Pressure
Idle speed
More than 98 (1.0, 14)
2,000
More than 294 (3.0, 43)
Oil pressure switch torque
: 14.7 N·m (1.5 kg-m, 11 ft-lb)
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