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ENGINE LUBRICATION SYSTEM

B ENGINE

ENGINE LUBRICATION SYSTEM
SECTION LU LU

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

Revision; 2004 April LU-1 2003 Murano
PRECAUTIONS

PRECAUTIONS PFP:00001

Precautions for Liquid Gasket ABS004RE

REMOVAL OF LIQUID GASKET SEALING
q After removing the mounting bolts and nuts, separate the mating
surface using a seal cutter and remove the liquid gasket sealing.
CAUTION:
Be careful not to damage the mating surfaces.
q In areas where the cutter is difficult to use, use a plastic hammer
to lightly tap the areas where the liquid gasket is applied.
CAUTION:
If for some unavoidable reason a tool such as a flat-bladed
screwdriver is used, be careful not to damage the mating
surfaces.
PBIC0002E

LIQUID GASKET APPLICATION PROCEDURE
1. Using a scraper, remove the old liquid gasket adhering to the
gasket application surface and the mating surface.
q Remove the liquid gasket completely from the groove of the
gasket application surface, mounting bolts, and bolt holes.
2. Wipe the gasket application surface and the mating surface with
white gasoline (lighting and heating use) to remove adhering
moisture, grease and foreign materials.
3. Attach genuine liquid gasket tube to the tube presser.
Use Genuine RTV silicone sealant or equivalent. Refer to
GI-46, "RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" . PBIC0003E

4. Apply the gasket without breaks to the specified location with the
specified dimensions.
q If there is a groove for the liquid gasket application, apply the
gasket to the groove.

EMA0622D

q As for the bolt holes, normally apply the gasket inside the
holes. Occasionally, it should be applied outside the holes.
Make sure to read the text of this manual.
q Within five minutes of gasket application, install the mating
component.
q If the liquid gasket protrudes, wipe it off immediately.
q Do not retighten after the installation.
q After 30 minutes or more have passed from the installation, fill
the engine oil and engine coolant.
CAUTION: SEM159F
If there are specific instructions in this manual, observe
them.

Revision; 2004 April LU-2 2003 Murano
PREPARATION

PREPARATION PFP:00002
A
Special Service Tools ABS003MQ

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 upper oil pan
E
(J25695-2)
Hose
F

S-NT559
G
KV10115801 Removing oil filter
(J38956)
Oil filter wrench
H

I
S-NT375

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

K
NT052

L
Commercial Service Tools ABS003MR

Tool name Description M
Deep socket Removing and installing oil pressure switch
Deep socket 26 mm (1.02 in)

NT818

Power tools Loosening nuts and bolts

PBIC0190E

Revision; 2004 April LU-3 2003 Murano
LUBRICATION SYSTEM

LUBRICATION SYSTEM PFP:15010

Lubrication Circuit ABS0035N

PBIC1200E

Revision; 2004 April LU-4 2003 Murano
LUBRICATION SYSTEM

System Drawing ABS0035O

J
PBIC1404E

Revision; 2004 April LU-5 2003 Murano
ENGINE OIL

ENGINE OIL PFP:KLA92

Inspection ABS0035P

OIL LEVEL
NOTE:
q Before starting the engine, put vehicle horizontally and check
the oil level. If the engine is already started, stop it and allow 10
minutes before checking.
q Check that the oil level is within the range as indicated on the
dipstick.
q If it is out of range, add oil as necessary.

PBIC0249E

OIL APPEARANCE
q Check the oil for white turbidity or heavy contamination.
q If the oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant.
OIL LEAKAGE
Check for oil leakage around the following areas:
q Oil pan
q Oil pan drain plug
q Oil pressure switch
q Oil filter
q Oil cooler
q Intake valve timing control cover and intake valve timing control solenoid valve
q Mating surface between cylinder block and cylinder head
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 block
OIL PRESSURE CHECK
WARNING:
q Be careful not to burn yourself, as engine oil may be hot.
q Put the selector lever in the Park "P" position.
1. Check oil level. Refer to LU-6, "Inspection" .
2. Remove splash guard (RH).
3. Disconnect oil pressure switch harness connector.
4. Remove oil pressure switch.

SLC240B

Revision; 2004 April LU-6 2003 Murano
ENGINE OIL

5. Install pressure gauge.
6. Start engine and warm it up to normal operating temperature. A
7. Check oil pressure with engine running under no-load.

Engine speed Approximate discharge pressure LU
rpm kPa (kg/cm2 , psi)
Idle speed More than 98 (1.0, 14)
2,000 More than 294 (3.0, 43) C
6,000 More than 392 (4.0, 57)
SLC926
If difference is extreme, check oil passage and oil pump for oil D
leaks.
8. After the inspections, install the oil pressure switch as follows:
a. Remove the old liquid gasket adhering to switch and engine. E
b. Apply liquid gasket and tighten the oil pressure switch to specification.
Use Genuine Thread Sealant or equivalent. Refer to GI-46, "RECOMMENDED CHEMICAL PRODUCTS
AND SEALANTS" .
F
: 12.3 - 17.2 N

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