Nissan Murano Z50 (2004 year). Manual - part 47

PRECAUTIONS

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3.

Attach liquid gasket tube to tube presser [SST: WS39930000
(

—

)].

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-47, "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, normally apply liquid gasket inside the
holes. Occasionally, it should be applied outside the holes.
Make sure 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.

●

Do not retighten after 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

SEM159F

CO-4

PREPARATION

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PREPARATION

PFP:00002

Special Service Tools

ABS0035A

The actual shapes of Kent-Moore tools may from those of special service tools illustrated here.

Commercial Service Tools

ABS0035B

Tool number
(Kent-Moore No.)
Tool name

Description

WS39930000
(

—

)

Tube pressure

Pressing the tube of liquid gasket

EG17650301
(J33984-A)
Radiator cap tester adapter

Adapting radiator cap tester to radiator cap 
and radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)

KV99103510
(

—

)

Radiator plate pliers A

Installing radiator upper and lower tanks

KV99103520
(

—

)

Radiator plate pliers B

Removing radiator upper and lower tanks

S-NT052

S-NT564

S-NT224

S-NT225

Tool name

Description

Power tool

Loosening bolts and nuts

Radiator cap tester

Checking radiator and radiator cap

PBIC0190E

PBIC1982E

OVERHEATING CAUSE ANALYSIS

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OVERHEATING CAUSE ANALYSIS

PFP:00012

Troubleshooting Chart

ABS0035C

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 
paper 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 viscosity

—

Insufficient engine coolant

Engine coolant leaks

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 leaks into 
cooling system

Cylinder head deterioration

Cylinder head gasket dete-
rioration

CO-6

OVERHEATING CAUSE ANALYSIS

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Except cool-
ing system 
parts mal-
function

—

Overload on engine

Abusive driving

High engine rpm under no 
load

Driving in low gear for 
extended time

Driving at extremely high 
speed

Powertrain system mal-
function

—

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

COOLING SYSTEM

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COOLING SYSTEM

PFP:21020

Cooling Circuit

ABS0034X

PBIC2692E

CO-8

COOLING SYSTEM

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System Chart

ABS00D9K

PBIC2693E

ENGINE COOLANT

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ENGINE COOLANT

PFP:KQ100

Inspection

ABS0035F

LEVEL CHECK

●

Check if the reservoir tank engine coolant level is within the
“MIN” to “MAX” range when the engine is cool.

●

Adjust the coolant level as necessary.

LEAK CHECK

●

To check for leaks, apply pressure to the cooling system with the
radiator cap tester (commercial service tool) and radiator cap
tester adapter [SST].

WARNING:

Never remove radiator cap when the engine is hot. Serious
burns could occur from high pressure engine coolant
escaping from the radiator.

CAUTION:

Higher testing pressure than specified may cause radiator
damage.

NOTE:
In case that engine coolant decreases, replenish radiator with engine coolant.

●

If anything is found, repair or replace damaged parts.

Changing Engine Coolant

ABS0035V

WARNING:

●

To avoid being scalded, never change engine coolant when engine is hot.

●

Wrap a thick cloth around cap and carefully remove cap. First, turn cap a quarter of a turn to
release built-up pressure. Then turn cap all the way.

●

Be careful not to allow engine coolant to contact drive belts.

DRAINING ENGINE COOLANT

1.

Remove radiator drain hole cap on undercover.

2.

Open radiator drain plug at the bottom of radiator,  and then
remove radiator cap. 

SMA412B

Testing pressure

: 157 kPa (1.6 kg/cm

2

 , 23 psi)

SLC756A

PBIC1204E

CO-10

ENGINE COOLANT

Revision: 2004 November

2004 Murano

When draining all of engine coolant in the system, open water drain plugs on cylinder block. Refer
to 

EM-111, "DISASSEMBLY"

 .

3.

Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.

4.

Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to 

CO-11, "FLUSHING COOLING SYSTEM"

 .

REFILLING ENGINE COOLANT

NOTE:
When engine coolant is drained from radiator only, step 3, 4 and 6 are unnecessary.

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 plug on cylinder block are removed, close and tighten them. Refer  to 

EM-116,

"ASSEMBLY"

  .

2.

Make sure that each hose clamp has been firmly tightened.

3.

Remove air duct assembly. Refer to 

EM-14, "AIR CLEANER AND AIR DUCT"

  .

4.

Disconnect heater hose (right side of vehicle) at the position in
the figure.

●

Enhance heater hose as high as possible.

5.

Fill radiator, and reservoir tank if removed, to specified level.

●

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.

●

Use Genuine Nissan Long Life Antifreeze/Coolant or
equivalent mixed with water (distilled or demineralized).
Refer to 

MA-11, "RECOMMENDED FLUIDS AND LUBRI-

CANTS"

  .

PBIC1205E

Radiator drain plug:

 

 : 0.78 - 1.56 N·m (0.08 - 0.15 kg-m, 7 - 13 in-lb)

PBIC2847E

Engine coolant capacity
(With reservoir tank at “MAX” level)

: Approximately 9.6 

 (10-1/8 US qt, 8-1/2 lmp qt)

SMA182B

ENGINE COOLANT

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●

When engine coolant overflows disconnected heater hose, connect heater hose, and continue filling the
engine coolant, if heater hose is disconnected.

6.

Install air duct assembly. Refer to 

EM-14, "AIR CLEANER AND AIR DUCT"

  .

7.

Install radiator cap.

8.

Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3000
rpm.

●

Make sure 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.

10. Refill reservoir tank to “MAX” level line with engine coolant.

11. Repeat steps 5 through 9 two or more times with radiator cap installed until engine coolant level no longer

drops. 

12. Check cooling system for leaks 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 through 9 until engine coolant level no

longer drops.

FLUSHING COOLING SYSTEM

NOTE:
When engine coolant is drained from radiator only, step 2, 3 and 5 are unnecessary.
1.

Install reservoir tank if removed, and radiator drain plug.

If water drain plug on cylinder block are removed, close and tighten them. Refer  to 

EM-116,

"ASSEMBLY"

  .

2.

Remove air duct assembly. Refer to 

EM-14, "AIR CLEANER AND AIR DUCT"

  .

3.

Disconnect heater hose (right side of vehicle) at the position in
the figure.

●

Enhance heater hose as high as possible.

Reservoir tank engine coolant capacity
(At “MAX” level)

: 0.8   (7/8 US qt, 3/4 lmp qt)

SMA412B

Radiator drain plug:

 

 : 0.78 - 1.56 N·m (0.08 - 0.15 kg-m, 7 - 13 in-lb)

PBIC2847E

CO-12

ENGINE COOLANT

Revision: 2004 November

2004 Murano

4.

Fill radiator and reservoir tank with water and install radiator cap.

●

When engine coolant overflows disconnected heater hose, connect heater hose, and continue filling the
engine coolant, if heater hose is disconnected.

5.

Install air duct assembly. Refer to 

EM-14, "AIR CLEANER AND AIR DUCT"

  .

6.

Run the engine and warm it up to normal operating temperature.

7.

Rev the engine two or three times under no-load.

8.

Stop the engine and wait until it cools down.

9.

Drain water from the system. Refer to 

CO-9, "DRAINING ENGINE COOLANT"

  .

10. Repeat steps 1 through 9 until clear water begins to drain from radiator.

RADIATOR

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RADIATOR

PFP:21400

Removal and Installation

ABS0035H

WARNING:

Do not remove radiator cap when engine is hot. Serious burns could occur from high-pressure engine
coolant escaping from radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter of a turn to
release built-up pressure. Carefully remove radiator cap by turning it all the way.

REMOVAL

1.

Remove undercover.

2.

Drain engine coolant. Refer to 

CO-9, "Changing Engine Coolant"

 .

CAUTION:

●

Perform this step when engine is cold.

●

Do not spill engine coolant on drive belts.

3.

Remove air duct (inlet) and radiator cover grills (right and left sides). Refer to 

EM-14, "AIR CLEANER

AND AIR DUCT"

 .

4.

Disconnect harness connector from fan motors, and move harness to aside.

5.

Disconnect CVT fluid cooler hoses.

●

Install plug to avoid leakage of CVT fluid.

6.

Remove radiator hoses (upper and lower) and reservoir tank hose.

7.

Remove reservoir tank and bracket.

1.

Bracket

2.

Reservoir tank cap

3.

Reservoir tank

4.

Bracket

5.

Clamp

6.

Reservoir tank hose

7.

Radiator upper clip

8.

Mounting rubber

9.

Radiator cap

10. Radiator

11.

Mounting rubber

12. Clamp

13. CVT fluid cooler hose

14. Clamp

15. Radiator hose (upper)

16. CVT fluid cooler hose

17. O-ring

18. Drain plug

19. Radiator hose (lower)

20. Radiator cooling fan assembly

PBIC1206E

CO-14

RADIATOR

Revision: 2004 November

2004 Murano

8.

Remove battery and battery tray, and move fuse and fusible link block to aside. Refer to 

SC-4, "BAT-

TERY"

 .

9.

Remove radiator upper clips by pulling the tabs outside to
release the lock.
Do not pull the tabs outside excessively to prevent it from
damaging.

10. Remove mounting rubbers (upper) from mounting pins on radiator.
11. Lift up and remove radiator and radiator cooling fan assembly.

CAUTION:

Do not damage or scratch air conditioner condenser and radiator core when removing.

12. Remove radiator cooling fan assembly from radiator.

INSTALLATION

Note the following, and install in the reverse order of removal.

Radiator Upper Clip

Install radiator upper clip on radiator core connection as follows:

1.

Install mounting rubbers (upper) on mounting pins of radiator.

2.

Align radiator upper clip with radiator core connection, then insert radiator upper clip straight into radiator
core connections until a click is heard.

3.

After connecting radiator upper clip, use the following method to make sure it is fully connected.

●

Visually confirm that two radiator upper clips are connected to radiator core connections.

●

Move radiator upper clip and the radiator forward and backward to make sure they are securely con-
nected.

INSPECTION AFTER INSTALLATION

●

Check for leaks of engine coolant using radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
radiator cap tester (commercial service tool). Refer to 

CO-9, "LEAK CHECK"

 .

●

Start and warm up engine. Visually check if there is no leaks of engine coolant and CVT fluid.

PBIC1216E

PBIC1241E

RADIATOR

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Checking Radiator Cap

ABS007ZV

1.

Pull negative-pressure valve to open it, and make sure it close
completely when released.

●

Make sure there is no dirt or damage on the valve seat of radi-
ator cap negative-pressure valve. 

●

Make sure there are no abnormalities in the opening and clos-
ing conditions of negative-pressure valve.

2.

Check radiator cap relief pressure.

●

When connecting radiator cap to radiator cap tester adapter
[SST] and radiator cap tester (commercial service tool), apply
engine coolant to the cap seal part. 

●

Replace radiator cap if there is an abnormality in negative-
pressure valve, or if the open-valve pressure fall below limit.

Checking Radiator

ABS007ZW

Check radiator for mud or clogging. If necessary, clean radiator as follows.

●

Be careful not to bend or damage radiator fins.

●

When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator
shroud and horns. Then tape harness and connectors to prevent water from entering.

1.

Apply water by hose to the back side of 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 (11.8

in). 

5.

Blow air again into all the radiator core surfaces once per minute until no water sprays out.

SMA967B

Standard:

78 - 98 kPa (0.8 - 1.0 kg/cm

2

 , 11 - 14 psi)

Limit:

59 kPa (0.6 kg/cm

2

 , 9 psi)

SLC755A

CO-16

RADIATOR (ALUMINUM TYPE)

Revision: 2004 November

2004 Murano

RADIATOR (ALUMINUM TYPE)

PFP:21460

Disassembly and Assembly

ABS004RT

PREPARATION

1.

Attach spacer to tip of radiator plate pliers A [SST].
Spacer specification: 18 mm (0.71 in) wide 

×

 8.5 mm (0.335 in)

long 

×

 1.5 mm (0.059 in) thick.

2.

Make sure that when radiator plate pliers A [SST: KV99103510 (

—

)] are closed dimension H

′′

 is

approx. 7.6 mm (0.299 in).

3.

Adjust dimension H

′′

 with spacer, if necessary.

DISASSEMBLY

1.

Remove upper or lower tanks with radiator plate pliers B [SST].

CAUTION:

Do not disassemble lower tank and CVT fluid cooler.

NOTE:
Regard lower tank and CVT fluid cooler as an assembly.

1.

Upper tank

2.

Sealing rubber

3.

Core

4.

Lower tank (with CVT fluid cooler)

PBIC2539E

SLC655CB

SLC903-A

RADIATOR (ALUMINUM TYPE)

CO-17

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●

Grip the crimped edge and bend it upwards so that radiator
plate pliers B slips off.

CAUTION:

Do not bend excessively.

●

In areas where radiator plate pliers B cannot be used, use
screwdriver to bend the edge up.

CAUTION:

Be careful not to damage tank.

2.

Remove sealing rubber.

3.

Make sure the edge stands straight up.

ASSEMBLY

1.

Clean contact portion of tank.

SLC893

SLC930

SLC931

SLC932

CO-18

RADIATOR (ALUMINUM TYPE)

Revision: 2004 November

2004 Murano

2.

Install new sealing rubber while pushing it with fingers.

CAUTION:

Be careful not to twist sealing rubber.

3.

Caulk tank in numerical order as shown in the figure with radia-
tor plate pliers A [SST].

●

Use pliers in the locations where radiator plate pliers A cannot
be used.

SLC917A

SLC904-A

PBIC2076E

SLC897