Nissan Murano Z51. Manual - part 348

ENGINE COOLANT

CO-13

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6.

Install air duct assembly and air cleaner cases (upper and lower) assembly. Refer to 

EM-31, "Exploded

View"

.

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

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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 

EM-122, "Dis-

assembly and Assembly"

.

2.

Remove air duct assembly and air cleaner cases (upper and lower) assembly. Refer to 

EM-31, "Exploded

View"

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A

: MAX 

B

:  MIN

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Tightening torque

: Refer to 

CO-16, "Exploded View"

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CO-14

< PERIODIC MAINTENANCE >

ENGINE COOLANT

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 

CO-11, "Draining"

.

9.

Repeat steps 1 through 8 until clear water begins to drain from radiator.

: Vehicle front

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RADIATOR

CO-15

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RADIATOR

RADIATOR CAP

RADIATOR CAP : Inspection

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• 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

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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.

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Standard and limit

: Refer to 

CO-30, "Radiator"

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CO-16

< REMOVAL AND INSTALLATION >

RADIATOR

REMOVAL AND INSTALLATION

RADIATOR

Exploded View

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Removal and Installation

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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 

GI-4, "Components"

 for symbols in the figure.

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