Nissan Murano Z51 (2008 year). Manual — part 85
CHG
ALTERNATOR
CHG-25
< ON-VEHICLE REPAIR >
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Removal and Installation
INFOID:0000000003412964
REMOVAL
1.
Disconnect the negative battery terminal.
2.
Remove engine cover.
3.
Remove front wheel and tire (RH).
4.
Remove splash guard (RH) Refer to
EXT-23, "FENDER PROTECTOR : Exploded View"
5.
Remove air cleaner and air duct assembly. Refer to
6.
Remove drive belt. Refer to
EM-13, "Removal and Installation"
.
7.
Remove A/C compressor. Refer to
HA-37, "Removal and Installation"
.
8.
Remove idler pulley.
9.
Disconnect the oil pressure switch.
10. Disconnect the alternator harness connectors.
11. Remove the alternator bolt and nuts, using power tools.
12. Slide the alternator out and remove.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
1.
Rear bearing
2.
Rotor assembly
3.
Retainer
4.
Front bearing
5.
Front bracket assembly
6.
Through bolt
7.
Pulley
8.
Pulley nut
9.
Stator assembly
10. IC voltage regulator assembly
11.
Diode assembly
12. Rear bracket assembly
13. Terminal set
Refer to
JPMIA0859GB
Revision: 2008 October
2009 Murano
CHG-26
< ON-VEHICLE REPAIR >
ALTERNATOR
• Temporarily tighten all of alternator bolt and nuts. And then
tighten them in numerical order shown in the figure.
• Be sure to tighten “B” terminal nut carefully.
• Install alternator and check tension of belt. Refer to
.
• For this model, the power generation voltage variable control system that controls the power gener-
ation voltage of the alternator has been adopted. Therefore, the power generation voltage variable
control system operation inspection should be performed after replacing the alternator, and then
make sure that the system operates normally. Refer to
CHG-22, "Inspection Procedure"
Inspection
INFOID:0000000003412965
ALTERNATOR PULLEY INSPECTION
Perform the following.
• Make sure that alternator pulley does not rattle.
• Make sure that alternator pulley nut is tight.
JPMIA0831ZZ
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CHG
SERVICE DATA AND SPECIFICATIONS (SDS)
CHG-27
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Alternator
INFOID:0000000003412962
*: Adjustment range of power generation voltage variable control is 11.4 – 15.6 V.
Type
A003TJ1791
MITSUBISHI make
Nominal rating
[V - A]
12 – 130
Ground polarity
Negative
Minimum revolution under no-load (When 13.5 V is ap-
plied)
[rpm]
Less than 1,300
Hot output current (When 13.5 V is applied)
[A/rpm]
More than 61/1,500
More than 109/2,500
More than 129/5,000
Regulated output voltage
[V]
14.1 – 14.7
*
Minimum length of brush
[mm (in)]
More than 5.00 (0.197)
Brush spring pressure
[N (g, oz)]
4.1 – 5.3 (418 – 541, 14.7 – 19.1)
Slip ring minimum outer diameter
[mm (in)]
More than 22.1 (0.870)
Rotor (Field coil) resistance
[
Ω
]
1.8 – 2.2
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CO-1
ENGINE
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SECTION
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CONTENTS
ENGINE COOLING SYSTEM
FUNCTION DIAGNOSIS . . . . . . . ...
DESCRIPTION . . . . . . . . . . . . .
Engine Cooling System . . . . . . . . . . ...
Engine Cooling System Schematic . . . . . .....
SYMPTOM DIAGNOSIS . . . . . . . ...
OVERHEATING CAUSE ANALYSIS . . . . ..
Troubleshooting Chart . . . . . . . . . . . ..
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Liquid Gasket . . . . . . . . . . . . . . ...
PREPARATION . . . . . . . . . . .
PREPARATION . . . . . . . . . . . . ...
Special Service Tool . . . . . . . . . . . .....
Commercial Service Tools . . . . . . . . . ...
ON-VEHICLE MAINTENANCE . . . . . .
ENGINE COOLANT . . . . . . . . . . .
Inspection . . . . . . . . . . . . . . . . ..
Draining . . . . . . . . . . . . . . . . .....
Refilling . . . . . . . . . . . . . . . . .....
Flushing . . . . . . . . . . . . . . . . ...
RADIATOR . . . . . . . . . . . . . . .
RADIATOR CAP . . . . . . . . . . . . . .
RADIATOR CAP : Inspection . . . . . . . . ..
RADIATOR . . . . . . . . . . . . . . . .
RADIATOR : Inspection . . . . . . . . . . ..
ON-VEHICLE REPAIR . . . . . . . . .
RADIATOR . . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
Inspection . . . . . . . . . . . . . . . .
COOLING FAN . . . . . . . . . . . . ..
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
Disassembly and Assembly . . . . . . . . . .
Inspection . . . . . . . . . . . . . . . .
WATER PUMP . . . . . . . . . . . . ..
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
Inspection . . . . . . . . . . . . . . . .
WATER INLET AND THERMOSTAT ASSEM-
BLY . . . . . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
Inspection . . . . . . . . . . . . . . . .
WATER OUTLET AND WATER PIPING . . ..
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
Inspection . . . . . . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . . .
Periodical Maintenance Specification . . . . . ..
Radiator . . . . . . . . . . . . . . . . ...
Thermostat . . . . . . . . . . . . . . . ..
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CO-2
< FUNCTION DIAGNOSIS >
DESCRIPTION
FUNCTION DIAGNOSIS
DESCRIPTION
Engine Cooling System
INFOID:0000000003304273
Engine Cooling System Schematic
INFOID:0000000003304274
JPBIA1682GB
JPBIA1683GB
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OVERHEATING CAUSE ANALYSIS
CO-3
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting Chart
INFOID:0000000003304275
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 density
—
Insufficient engine coolant
Engine coolant leakage
Cooling hose
Loose clamp
Cracked hose
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 leakage into
cooling system
Cylinder head deterioration
Cylinder head gasket deteri-
oration
Revision: 2008 October
2009 Murano
CO-4
< SYMPTOM DIAGNOSIS >
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
Revision: 2008 October
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PRECAUTIONS
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004754455
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 “SRS AIRBAG” and “SEAT BELT” of this
Service Manual.
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 “SRS AIRBAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors while ignition switch is
ON or engine is running, never use air or electric power tools or strike near the sensor(s) with a hammer.
Heavy vibration may activate the sensor(s), deploy the airbag(s), possibly cause serious injury.
When using air or electric power tools or hammers, always turn OFF ignition switch, disconnect the battery,
and wait 3 minutes or more before performing any service.
Liquid Gasket
INFOID:0000000003304277
REMOVAL OF LIQUID GASKET SEALING
• After removing mounting nuts and bolts, separate the mating sur-
face using the seal cutter [SST: KV10111100 (J-37228)] (A) and
remove old liquid gasket sealing.
CAUTION:
Be careful not to damage the mating surfaces.
• Tap (B) the seal cutter [SST: KV10111100 (J-37228)] to insert it,
and then slide (C) it by tapping on the side as shown in the figure.
• In areas where seal cutter [SST: KV10111100 (J-37228)] is difficult
to use, use a plastic hammer to lightly tap the parts, to remove it.
CAUTION:
If for some unavoidable reason tool such as a screwdriver is
used, be careful not to damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1.
Using a scraper (A), remove old liquid gasket adhering to the liq-
uid gasket application surface and the mating surface.
• Remove liquid gasket completely from the groove of the liquid
gasket application surface, mounting bolts, and bolt holes.
2.
Wipe the liquid gasket application surface and the mating sur-
face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.
JPBIA0052ZZ
JPBIA0053ZZ
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CO-6
< PRECAUTION >
PRECAUTIONS
3.
Attach liquid gasket tube to the tube presser (commercial ser-
vice tool).
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-17, "Recommended Chemical Products and Sealants"
.
4.
Apply liquid gasket without breaks to the specified location with
the specified dimensions.
• If there is a groove for the liquid gasket application, apply liq-
uid gasket to the groove.
• As for the bolt holes (B), normally apply liquid gasket inside
the holes. Occasionally, it should be applied outside the holes.
Check to read the text of service manual.
• Within five minutes of liquid gasket application, install the mat-
ing component.
• If liquid gasket protrudes, wipe it off immediately.
• Never retighten after mounting bolts and nuts the installation.
• After 30 minutes or more have passed from the installation, fill
engine oil and engine coolant.
CAUTION:
If there are specific instructions in this manual, observe them.
EMA0622D
A
: Groove
: Inside
JPBIA0010ZZ
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PREPARATION
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PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000003486752
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service Tools
INFOID:0000000003304278
Tool number
(Kent-Moore No.)
Tool name
Description
KV10111100
(J-37228)
Seal cutter
Removing water pump cover
NT046
Tool name
Description
Tube presser
Pressing the tube of liquid gasket
Power tool
Loosening nuts and bolts
Radiator cap tester
Checking radiator and radiator cap
Radiator cap tester adapter
Adapting radiator cap tester to radiator cap
and radiator pipe (upper) filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
S-NT052
PBIC0190E
PBIC1982E
S-NT564
Revision: 2008 October
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CO-8
< ON-VEHICLE MAINTENANCE >
ENGINE COOLANT
ON-VEHICLE MAINTENANCE
ENGINE COOLANT
Inspection
INFOID:0000000003304279
LEVEL
• Check if the reservoir tank engine coolant level is within the “MIN”
to “MAX” when the engine is cool.
• Adjust the engine coolant level if necessary.
LEAKAGE
• To check for leakage, apply pressure to the cooling system with the
radiator cap tester (commercial service tool) (A) and radiator cap
tester adapter (commercial service tool) (B).
WARNING:
Never remove radiator cap when engine is hot. Serious burns
could occur from high-pressure engine coolant escaping from
radiator.
CAUTION:
Higher test pressure than specified may cause radiator dam-
age.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.
• If anything is found, repair or replace damaged parts.
Draining
INFOID:0000000003304280
WARNING:
• To avoid being scalded, never change engine coolant when the engine is hot.
• Wrap a thick cloth around radiator cap and carefully remove radiator cap. First, turn radiator cap a
quarter of a turn to release built-up pressure. Then turn radiator cap all the way.
1.
Remove engine under cover.
2.
Open radiator drain plug (1) at the bottom of radiator, and then
remove radiator cap.
When draining all of engine coolant in the system, open water drain plugs on cylinder block. Refer
to
.
3.
Remove reservoir tank if necessary, and drain engine coolant and clean reservoir tank before installing.
A
: MAX
B
: MIN
JPBIA0102ZZ
Testing pressure
: Refer to
.
PBIC5121J
: Vehicle front
JPBIA1684ZZ
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ENGINE COOLANT
CO-9
< ON-VEHICLE MAINTENANCE >
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4.
Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to
.
Refilling
INFOID:0000000003304281
1.
Install reservoir tank if removed and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to
2.
Check that each hose clamp has been firmly tightened.
3.
Remove air duct assembly and air cleaner cases (upper and lower) assembly. Refer to
.
4.
Disconnect heater hose (1) at the position (
) in the figure.
5.
Fill radiator, and reservoir tank if removed, to specified level.
CAUTION:
Never adhere the engine coolant to electronic equipments.
(alternator etc.)
• Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2-1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.
• When engine coolant overflows disconnected heater
hose, connect heater hose, and continue filling the engine
coolant.
• Use Genuine NISSAN Long Life Antifreeze/Coolant or
equivalent mixed with water (distilled or demineralized).
Refer to
MA-15, "FOR NORTH AMERICA : Fluids and Lubri-
(for Mexico).
Tightening torque
: Refer to
: Vehicle front
JPBIA1685ZZ
Engine coolant capacity
: Refer to
CO-27, "Periodical Maintenance Spec-
(With reservoir tank at “MAX” level)
Reservoir tank engine coolant capacity
: Refer to
CO-27, "Periodical Maintenance
(At “MAX” level)
JPBIA0412ZZ
Revision: 2008 October
2009 Murano
CO-10
< ON-VEHICLE MAINTENANCE >
ENGINE COOLANT
6.
Install air duct assembly and air cleaner cases (upper and lower) assembly. Refer to
.
7.
Install radiator cap.
8.
Warm up engine until opening thermostat. Standard for warming-up time is approximately 10 minutes at
3,000 rpm.
• Check thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.
9.
Stop the engine and cool down to less than approximately 50
°
C (122
°
F).
• Cool down using fan to reduce the time.
• If necessary, refill radiator up to filler neck with engine coolant.
CAUTION:
Never adhere the engine coolant to electronic equipments. (alternator etc.)
10. Refill reservoir tank to “MAX” level line with engine coolant.
11. Repeat steps 7 through 10 two or more times with radiator cap installed until engine coolant level no
longer drops.
12. Check cooling system for leakage with engine running.
13. Warm up the engine, and check for sound of engine coolant flow while running engine from idle up to
3,000 rpm with heater temperature controller set at several position between “COOL” and “WARM”.
• Sound may be noticeable at heater unit.
14. Repeat step 13 three times.
15. If sound is heard, bleed air from cooling system by repeating step 5, and steps from 7 to 14 until engine
coolant level no longer drops.
Flushing
INFOID:0000000003304282
1.
Install reservoir tank if removed and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to
2.
Remove air duct assembly and air cleaner cases (upper and lower) assembly. Refer to
.
A
: MAX
B
: MIN
JPBIA0102ZZ
Tightening torque
: Refer to
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ENGINE COOLANT
CO-11
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3.
Disconnect heater hose (1) at the position (
) in the figure.
4.
Fill radiator and reservoir tank with water and reinstall radiator cap.
CAUTION:
Never adhere the water to electronic equipments. (alternator etc.)
• When water overflows disconnected heater hose, connect heater hose, and continue filling the
water.
5.
Run the engine and warm it up to normal operating temperature.
6.
Rev the engine two or three times under no-load.
7.
Stop the engine and wait until it cools down.
8.
Drain water from the system. Refer to
.
9.
Repeat steps 1 through 8 until clear water begins to drain from radiator.
: Vehicle front
JPBIA1685ZZ
Revision: 2008 October
2009 Murano
CO-12
< ON-VEHICLE MAINTENANCE >
RADIATOR
RADIATOR
RADIATOR CAP
RADIATOR CAP : Inspection
INFOID:0000000003304283
• Check valve seat (A) of radiator cap.
- Check if valve seat is swollen to the extent that the edge of the
plunger (B) cannot be seen when watching it vertically from the
top.
- Check if valve seat has no soil and damage.
- Check that there is no dirt or damage on the valve seat of radiator
cap negative-pressure valve.
- Check that there are no unusualness in the opening and closing
conditions of negative-pressure valve.
• Check radiator cap relief pressure.
- When connecting radiator cap to the radiator cap tester (commer-
cial service tool) and the radiator cap tester adapter (commercial
service tool) (A), apply engine coolant to the cap seal surface.
• Replace radiator cap if there is an unusualness related to the above three.
CAUTION:
When installing radiator cap, thoroughly wipe out the radiator pipe (upper) filler neck to remove any
waxy residue or foreign material.
RADIATOR
RADIATOR : Inspection
INFOID:0000000003304284
Check radiator for mud or clogging. If necessary, clean radiator as follows:
CAUTION:
• Be careful not to bend or damage radiator fins.
• When radiator is cleaned without removal, remove all surrounding parts such as radiator cooling fan
assembly and horns. Then tape harness and connectors to prevent water from entering.
1.
Apply water by hose to the back side of the radiator core vertically downward.
2.
Apply water again to all radiator core surfaces once per minute.
3.
Stop washing if any stains no longer flow out from radiator.
4.
Blow air into the back side of radiator core vertically downward.
• Use compressed air lower than 490 kPa (5 kg/cm
2
, 71 psi) and keep distance more than 30 cm (11.81
in).
5.
Blow air again into all the radiator core surfaces once per minute until no water sprays out.
JPBIA1961ZZ
Standard and limit
: Refer to
JPBIA0109ZZ
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RADIATOR
CO-13
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ON-VEHICLE REPAIR
RADIATOR
Exploded View
INFOID:0000000003304285
Removal and Installation
INFOID:0000000003304286
REMOVAL
1.
Reservoir tank cap
2.
Reservoir tank
3.
Clamp
4.
Reservoir tank hose
5.
Radiator cap
6.
Radiator cap adapter
7.
Radiator pipe (upper)
8.
Clamp
9.
Radiator hose (upper)
10. Radiator hose (upper)
11.
O-ring
12. Drain plug
13. Water drain hose
14. Mounting rubber (upper)
15. Radiator upper clip
16. Radiator
17. Mounting rubber (lower)
18. Radiator pipe (lower)
19. Radiator hose (lower)
20. Clamp
21. CVT fluid cooler hose
22. CVT fluid cooler hose
23. CVT fluid cooler pipe
24. CVT fluid cooler hose
25. Grommet
26. Cooling fan assembly
27. Radiator hose (lower)
A.
To water outlet
B.
To transaxle assembly
C.
To water inlet
Refer to
for symbols in the figure.
JPBIA2760GB
Revision: 2008 October
2009 Murano
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