Nissan X-Trail 32. Manual - part 297

CO-14

< PERIODIC MAINTENANCE >

[MR20DD]

ENGINE COOLANT

• Move reservoir tank 

, and then remove it numerical order as

shown in the figure.

4.

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

CO-15, "Flushing"

.

Refilling

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CAUTION:

• Do not put additive such as waterleak preventive, since it may cause cooling waterway clogging.
• When refilling use Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent in its quality

mixed with water (distilled or demineralized). Refer to 

MA-23, "Fluids and Lubricants"

.

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-107, "Disas-

sembly and Assembly"

.

2.

Check that each hose clamp has been firmly tightened.

3.

 Fill radiator to specified level.

CAUTION:

Never adhere the engine coolant to electronic equipments
(alternator etc.).
• Pour coolant slowly of less than 2   (1-3/4 Imp qt) a

minute to allow air in system to escape.

4.

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

5.

Install radiator cap.

6.

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.

: Nut

: Pawl

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Radiator drain plug

: Refer to 

CO-17, "Exploded View"

.

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

 Refer to 

CO-31, "Periodical Maintenance Specification"

.

JPBIA0412ZZ

: MAX

: MIN

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

Refer to 

CO-31, "Periodical Maintenance Specification"

.

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ENGINE COOLANT

CO-15

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[MR20DD]

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7.

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.).

8.

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

9.

Repeat steps 5 through 8 two or more times with radiator cap installed until engine coolant level no longer
drops. 

10. Check cooling system for leakage with engine running.
11. 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.

12. Repeat step 11 three times.

13. If sound is heard, bleed air from cooling system by repeating step 5 through 8 until reservoir tank level no

longer drops. 

Flushing

INFOID:0000000010782932

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-107, "Disas-

sembly and Assembly"

.

2.

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

3.

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

4.

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

5.

Stop the engine and wait until it cools down.

6.

Drain water from the system. Refer to 

CO-13, "Draining"

.

7.

Repeat steps 1 through 6 until clear water begins to drain from radiator.

Radiator drain plug

: Refer to 

CO-17, "Exploded View"

.

CO-16

< PERIODIC MAINTENANCE >

[MR20DD]

RADIATOR

RADIATOR

RADIATOR CAP

RADIATOR CAP : Inspection

INFOID:0000000010782933

• Check valve seat 

 of radiator cap. 

- Check that valve seat is swollen to the extent that the edge of the

plunger 

 cannot be seen when watching it vertically from the top.

- Check that 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) (A) and the radiator cap tester adapter (commer-
cial service tool) (B), 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 filler neck to remove any waxy residue
or foreign material.

RADIATOR

RADIATOR : Inspection

INFOID:0000000010782934

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 harness 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 (4.9 bar, 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-31, "Radiator"

.

PBIC5122J

RADIATOR

CO-17

< REMOVAL AND INSTALLATION >

[MR20DD]

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REMOVAL AND INSTALLATION

RADIATOR

Exploded View

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REMOVAL

Removal and Installation

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REMOVAL

WARNING:

• Never remove radiator cap when engine is hot. Serious burns may occur from high-pressure engine

coolant escaping from radiator. 

Reservoir tank cap

Reservoir tank

Reservoir tank hose

Clip

Mounting bracket

Mounting rubber (upper)

Radiator cap

Side seal

Side seal

Radiator

Mounting rubber (lower)

O-ring

Drain plug

Side seal

Clamp

Radiator hose (lower)

Clamp

Radiator hose (upper)

Cooling fan assembly

To water outlet

To water inlet

: Always replace after every disassembly.

: N·m (kg-m, in-lb)

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