2005 NISSAN X-TRAIL engine coolant

CO-10
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ENGINE COOLANT

4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated,
flush the engine cooling system. Refer to CO-10, "
FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
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 is removed, close and tighten it. Refer to EM-89, "CYLIN-
DER BLOCK" .
2. Make sure that each hose clamp has been firmly tightened.
3. Fill radiator and reservoir tank to specified level.

Pour engine coolant through engine coolant filler neck
slowly of less than 2 (1-3/4 lmp qt) a minute to allow air
in system to escape.

Use Genuine NISSAN Anti-freeze Coolant or equivalent
mixed with water (distilled or demineralized). Refer to
MA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS".
4. Install radiator cap.
5. Warm up until opening thermostat and water control valve. Standard for warming-up time is approximately
10 minutes at 3,000 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 the engine.
6. 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.
7. Refill reservoir tank to “MAX” level line with engine coolant.
8. Repeat steps 3 through 6 two or more times with radiator cap installed until the engine coolant level no
longer drops.
9. Check cooling system for leaks with the engine running.
10. Warm up the engine, and check for sound of engine coolant flow while running the 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.
11. Repeat step 10 three times.
12. If sound is heard, bleed air from cooling system by repeating step 3 through 6 until the engine coolant
level no longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank if removed, and radiator drain plug.Engine coolant capacity
(with reservoir tank at “MAX” level)
: Approx. 7.1 (6-1/4 lmp qt)
SMA182B
Reservoir tank capacity (at “MAX” level)
: 0.7 (5/8 lmp qt)
SMA412B

ENGINE COOLANT
CO-11
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CAUTION:
Be sure to clean drain plug and install with new O-ring.

If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-89, "CYLIN-
DER BLOCK" .
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-9, "
DRAINING ENGINE COOLANT" .
7. Repeat steps 1 through 6 until clear water begins to drain from radiator.

CO-12
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RADIATOR

RADIATORPFP:21400
Removal and InstallationEBS00KOI
WARNING:
Do not remove radiator cap when the 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 RH and LH undercovers.
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 belt.
3. Remove air duct (inlet) and air duct assembly. Refer to EM-16, "
AIR CLEANER AND AIR DUCT" .
4. Disconnect harness connector from fan motor, and move it aside.
5. Disconnect radiator hoses (upper and lower).
6. Remove A/T fluid cooler hoses. (A/T models)

Install blind plug to avoid leakage of A/T fluid.
7. Remove radiator mounting brackets.
8. Remove radiator and radiator cooling fan assembly.
CAUTION:
Do not damage or scratch radiator core when removing.
1. Reservoir tank 2. Reservoir tank cap 3. Reservoir tank hose
4. Radiator mounting bracket 5. Mounting rubber (upper) 6. Radiator cap
7. Radiator 8. O-ring 9. Radiator drain plug
10. Mounting rubber (lower) 11. A/T fluid cooler hose 12. Radiator hose (lower)
13. Radiator hose (upper) 14. Bracket 15. Radiator cooling fan assembly
PBIC3640E

RADIATOR
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INSTALLATION
Installation is the reverse order of removal.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using a radiator cap tester adapter (special service tool: EG17650301)
and a 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 A/T fluid (A/T models).
Checking Radiator CapEBS00KOK

Check valve seat of radiator cap.
–Check if valve seat is swollen to the extent that the edge of the
plunger cannot be seen when watching it vertically from the top.
–Check if valve seat has no soil and damage.

Pull negative-pressure valve to open it, and make sure that it is
completely closed when released.
–Make sure that there is no dirt or damage on the valve seat of
radiator cap negative-pressure valve.
–Make sure 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 (com-
mercial service tool) and the radiator cap tester adapter [SST],
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.
Checking RadiatorEBS00KOL
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 the radiator core vertically downward.
2. Apply water again to all radiator core surface once per minute.
PBIC2816E
SMA967B
Standard:
78 - 98 kPa (0.78 - 0.98bar, 0.8 - 1.0 kg/cm
2 , 11 - 14 psi)
Limit:
59 kPa (0.59bar, 0.6 kg/cm
2 , 9 psi)
SLC755AC

COOLING FAN
CO-19
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COOLING FANPFP:21140
Removal and InstallationEBS011TD
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-9, "Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belt.
2. Remove air duct (inlet) and air duct assembly. Refer to EM-16, "
AIR CLEANER AND AIR DUCT" .
3. Disconnect radiator hose (upper) at radiator side. Refer to CO-12, "
RADIATOR" .
CAUTION:
Do not spill engine coolant on drive belt.
4. Disconnect harness connectors from fan motors, and move them to aside.
5. Remove radiator cooling fan assembly.
CAUTION:
Be careful not to damage or scratch on radiator core.
INSTALLATION
Installation is the reverse order of removal.
NOTE:
Cooling fans are controlled by ECM. For details, refer to EC-352, "
DTC P1217 ENGINE OVER TEMPERA-
TURE" (WITH EURO-OBD) or EC-755, "DTC P1217 ENGINE OVER TEMPERATURE" (WITHOUT EURO-
OBD).
1. Fan motor (LH) 2. Fan motor (RH) 3. Fan shroud
4. Cooling fan (RH) 5. Cooling fan (LH)
PBIC2593E

WATER PUMP
CO-21
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WAT E R P U MPPFP:21020
Removal and InstallationEBS00KON
REMOVAL
1. 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 belt.
2. Remove the following parts.

RH undercover

Drive belt; Refer to EM-13, "DRIVE BELTS" .

Drive belt auto-tensioner; Refer to EM-14, "Removal and Installation of Drive Belt Auto-Tensioner" .
3. Remove water pump.

Engine coolant will leak from cylinder block, so have a receptacle ready below.
CAUTION:

Handle water pump vane so that it does not contact any other parts.

Water pump cannot be disassembled and should be replaced as a unit.
4. Remove water pump housing with the following procedure;
a. Remove alternator. Refer to SC-13, "
CHARGING SYSTEM" .
b. Remove oil level gauge and oil level gauge guide. Refer to EM-27, "
OIL PAN AND OIL STRAINER" .
CAUTION:
Plug the oil level gauge guide opening to prevent oil pan from entering foreign materials.
c. Remove mounting bolts for water pipe.
d. Remove water pump housing.
5. Remove exhaust manifold and three way catalyst assembly. Refer to EM-25, "
EXHAUST MANIFOLD
AND THREE WAY CATALYST" .
6. Remove water pipe.
1. Water pump 2. Gasket 3. Gasket
4. Water pump housing 5. Gasket 6. Water pipe
7. O-ring
PBIC2253E

CO-22
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WATER PUMP

INSPECTION AFTER REMOVAL

Visually check if there is no significant dirt or rusting on water
pump body and vane.

Make sure that there is no looseness in vane shaft, and that it
turns smoothly when rotated by hand.

Replace water pump, if necessary.
INSTALLATION
Note the following, and install in the reverse order of removal.

When inserting water pipe end into cylinder block, apply a neutral detergent to O-ring. Then insert it imme-
diately.
INSPECTION AFTER INSTALLATION

Check for engine coolant leaks using a radiator cap tester adapter (special service tool: EG17650301)
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.
KBIA0155E

THERMOSTAT AND WATER CONTROL VALVE
CO-23
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THERMOSTAT AND WATER CONTROL VALVEPFP:21200
Removal and InstallationEBS00KOO
REMOVAL
1. 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 belt.
2. Disconnect radiator hose (lower) at water inlet side. Refer to CO-12, "
RADIATOR" .
3. Remove water inlet and thermostat.
4. Remove water control valve with the following procedure:
a. Disconnect radiator hose (upper) at water control valve housing (water outlet) side.
b. Disconnect harness connector from engine coolant temperature sensor.
c. Disconnect water hoses.
d. Remove heater pipe and heater hose.
e. After removing water control valve housing (water outlet) and water control valve.
1. Thermostat 2. O-ring 3. Water inlet
4. Water control valve 5. O-ring 6. Gasket
7. Water control valve housing (water outlet) 8. Washer 9. Engine coolant temperature sensor
10. Water hose 11. Heater hose 12. O-ring
13. Heater pipe 14. Water hose 15. Heater hose
PBIC3597E