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ENGINE LUBRICATION SYSTEM

B ENGINE

LU
SECTION
ENGINE LUBRICATION SYSTEM C

E
CONTENTS
PRECAUTIONS ......................................................... 2. OIL COOLER ........................................................... 10
. F
Precautions for Liquid Gasket ................................. 2 . Removal and Installation ....................................... 10 .
LIQUID GASKET APPLICATION PROCEDURE 2 ..... REMOVAL .......................................................... 10
.
PREPARATION .......................................................... 3
. INSPECTION AFTER REMOVAL ...................... 11 . G
Special Service Tools .............................................. 3. INSTALLATION .................................................. 11 .
Commercial Service Tools ....................................... 3 . INSPECTION AFTER INSTALLATION ............... 11 .
LUBRICATION SYSTEM ........................................... 4 . OIL PUMP ................................................................ 12
.
H
Lubrication Circuit ................................................... 4
. Removal and Installation ....................................... 12 .
System Chart .......................................................... 5
. REMOVAL .......................................................... 12
.
ENGINE OIL .............................................................. 6
. INSTALLATION .................................................. 12 .
Inspection ................................................................ 6
. INSPECTION AFTER INSTALLATION ............... 12 . I
ENGINE OIL LEVEL ............................................ 6 . Disassembly and Assembly ................................... 12 .
ENGINE OIL APPEARANCE ............................... 6 . DISASSEMBLY .................................................. 12 .
ENGINE OIL LEAKAGE ....................................... 6 . INSPECTION AFTER DISASSEMBLY ............... 13 . J
OIL PRESSURE CHECK ..................................... 7 . ASSEMBLY ........................................................ 14
.
Changing Engine Oil ............................................... 8 . SERVICE DATA AND SPECIFICATIONS (SDS) ..... 15 .
OIL FILTER ................................................................ 9
. Standard and Limit ................................................. 15
.
K
Removal and Installation ......................................... 9 . OIL PRESSURE ................................................. 15 .
REMOVAL ............................................................ 9
. ENGINE OIL CAPACITY (APPROXIMATE) ....... 15 .
INSTALLATION .................................................... 9 . OIL PUMP .......................................................... 15
.
INSPECTION AFTER INSTALLATION ................ 9 . REGULATOR VALVE ......................................... 15 . L

Revision: 2006 July LU-1 2007 Murano
PRECAUTIONS

PRECAUTIONS PFP:00001

Precautions for Liquid Gasket NBS002A1

LIQUID GASKET APPLICATION PROCEDURE
1. Remove old liquid gasket adhering to the liquid gasket application surface and the mating surface.
q Remove liquid gasket completely from the liquid gasket application surface, mounting bolts, and bolt
holes.
2. Wipe the liquid gasket application surface and the mating surface with white gasoline (lighting and heating
use) to remove adhering moisture, grease and foreign materials.
3. Apply liquid gasket to the liquid gasket application surface.
Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-46, "RECOMMENDED CHEMICAL
PRODUCTS AND SEALANTS" .
q Within 5 minutes of liquid gasket application, install the mating component.

q If liquid gasket protrudes, wipe it off immediately.

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.

Revision: 2006 July LU-2 2007 Murano
PREPARATION

PREPARATION PFP:00002
A
Special Service Tools NBS002A2

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

ST25051001 Measuring oil pressure
C
(J25695-1) Maximum measuring range: 2,452 kPa (25
Oil pressure gauge kg/cm2 , 356 psi)

NT050

ST25052000 Adapting oil pressure gauge to oil pan (upper)
E
(J25695-2)
Hose
F

S-NT559
G
KV10115801 Removing oil filter
(J38956) a: 64.3 mm (2.531 in)
Oil filter wrench
H

I
S-NT375

WS39930000 Pressing the tube of liquid gasket
( -- )
Tube presser J

K
NT052

Commercial Service Tools NBS002A3
L
Tool name Description

Power tools Loosening nuts and bolts M

PBIC0190E

Deep socket Removing and installing oil pressure switch
a: 27 mm (1.06 in)

PBIC4066E

Revision: 2006 July LU-3 2007 Murano
LUBRICATION SYSTEM

LUBRICATION SYSTEM PFP:15010

Lubrication Circuit NBS002A4

PBIC2688E

Revision: 2006 July LU-4 2007 Murano
LUBRICATION SYSTEM

System Chart NBS002A5

J
PBIC2689E

Revision: 2006 July LU-5 2007 Murano
ENGINE OIL

ENGINE OIL PFP:KLA92

Inspection NBS002A6

ENGINE OIL LEVEL
NOTE:
Before starting engine, put vehicle horizontally and check the engine oil level. If engine is already started, stop
it and allow 10 minutes before checking.
1. Pull out oil level gauge and wipe it clean.
2. Insert oil level gauge and make sure the engine oil level is within
the range shown in the figure.
3. If it is out of range, adjust it.

PBIC4202E

ENGINE OIL APPEARANCE
q Check engine oil for white turbidity or heavy contamination.
q If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant.
Repair or replace damaged parts.
ENGINE OIL LEAKAGE
Check for engine oil leakage around the following areas:
q Oil pans (lower and upper)
q Oil pan drain plug
q Oil pressure switch
q Oil filter
q Oil cooler
q Water pump cover
q Chain tensioner cover
q Intake valve timing control cover and intake valve timing control solenoid valve
q Mating surface between cylinder head and rocker cover
q Mating surface between front timing chain case and rear timing chain case
q Mating surface between rear timing chain case and cylinder head
q Mating surface between rear timing chain case and cylinder block
q Mating surface between rear timing chain case and oil pan (upper)
q Mating surface between cylinder block and cylinder head
q Crankshaft oil seals (front and rear)
q Camshaft position sensor (PHASE)

Revision: 2006 July LU-6 2007 Murano
ENGINE OIL

OIL PRESSURE CHECK
WARNING: A
q Be careful not to get burn yourself, as engine oil may be hot.
q Oil pressure check should be done in "Parking position".
1. Check the engine oil level. Refer to LU-6, "ENGINE OIL LEVEL" . LU
2. Remove splash guard (RH).
3. Disconnect harness connector at oil pressure switch, and
remove oil pressure switch using deep socket (commercial ser- C
vice tool)
CAUTION:
Do not drop or shock oil pressure switch. D

SLC240B
F
4. Install pressure gauge (SST) and hose (SST).

I
SLC926

5. Start the engine and warm it up to normal operating temperature. J
6. Check the engine oil pressure with engine running under no-load.
NOTE:
When the engine oil temperature is low, the engine oil pressure becomes high. K
Engine oil pressure [Engine oil temperature at 80

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