Nissan X-Trail 32. Manual - part 306

CO-50

< REMOVAL AND INSTALLATION >

[QR25DE]

WATER PUMP

WATER PUMP

Exploded View

INFOID:0000000010782975

Removal and Installation

INFOID:0000000010782976

REMOVAL

1.

Remove engine under cover. Refer to 

EXT-39, "ENGINE UNDER COVER : Exploded View"

.

2.

Drain engine coolant. Refer to 

CO-39, "Draining"

.

CAUTION:

Perform this step when engine is cold. 

3.

Remove the following parts.
• Drive belt: Refer to 

EM-166, "Removal and Installation"

.

• Alternator: Refer to 

CHG-46, "QR25DE : Exploded View"

.

4.

Remove water pump.
• Engine coolant leaks 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.

5.

Remove water pump housing with the following procedure:

a.

Remove oil level gauge and oil level gauge guide. Refer to 

EM-247, "Exploded View"

.

CAUTION:

Plug the oil level gauge guide opening to prevent oil pan from entering foreign materials.

b.

Remove exhaust manifold. Refer to 

EM-180, "Exploded View"

.

O-ring

Water pipe

Water pump housing

Gasket

Water pump

Gasket

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

JSBIA5000GB

WATER PUMP

CO-51

< REMOVAL AND INSTALLATION >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

CO

N

P

O

c.

Remove water pump housing.

6.

Remove water pipe.

INSTALLATION

CAUTION:

Do not reuse O-ring.
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 immedi-

ately.

Inspection

INFOID:0000000010782977

INSPECTION AFTER REMOVAL

• Check visually that there is no significant dirt or rusting on water

pump body and vane.

• Check that there is no looseness in vane shaft, and that it turns

smoothly when rotated by hand.

• Replace water pump, if necessary.

INSPECTION AFTER INSTALLATION

• Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the

radiator cap tester (commercial service tool). Refer to 

CO-39, "Inspection"

.

• Start and warm up engine. Check visually that there is no leakage of engine coolant.

KBIA0155E

CO-52

< REMOVAL AND INSTALLATION >

[QR25DE]

THERMOSTAT AND WATER OUTLET

THERMOSTAT AND WATER OUTLET

Exploded View

INFOID:0000000010782978

Removal and Installation

INFOID:0000000010782979

REMOVAL

Thermostat

1.

Remove air duct 1 and air duct 2. Refer to 

EM-174, "Exploded View"

.

2.

Drain engine coolant. Refer to 

CO-39, "Draining"

.

CAUTION:

Perform this step when engine is cold.

3.

Remove exhaust manifold cover. Refer to 

EM-180, "Exploded View"

.

4.

Disconnect radiator hose (lower) at water inlet side. Refer to 

CO-43, "Exploded View"

.

5.

Remove water inlet and thermostat.

Water Outlet

Thermostat

O-ring

Water inlet

O-ring

Heater pipe

Clamp

Water hose

water outlet

Clamp

Water hose

Water hose

Engine coolant temperature sen-
sor

To radiator

To CVT oil warmer

To oil cooler

To heater

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

, 

: Indicates that the part is connected at points with same symbol in actual vehicle.

JSBIA5001GB

THERMOSTAT AND WATER OUTLET

CO-53

< REMOVAL AND INSTALLATION >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

CO

N

P

O

1.

Remove air duct 1 and air duct 2. Refer to 

EM-174, "Exploded View"

.

2.

Drain engine coolant. Refer to 

CO-39, "Draining"

.

CAUTION:

Perform this step when engine is cold.

3.

Remove battery and battery bracket. Refer to 

PG-140, "EXCEPT FOR R9M : Exploded View"

.

4.

Disconnect radiator hose (upper) at water outlet side.

5.

Disconnect harness connector from engine coolant temperature sensor.

6.

Disconnect water hoses.

7.

Remove heater pipe and heater hose.

8.

Remove water outlet.

INSTALLATION

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

Thermostat

• Install thermostat with making rubber ring 

 groove fit to thermo-

stat flange 

 with the whole circumference. 

• Install thermostat with jiggle valve 

 facing upwards. (The position

deviation may be within the range of 20 degrees 

 as shown in the

figure.)

Heater Pipe Installation

Apply a neutral detergent to O-ring, then quickly insert the insertion part of heater pipe into cylinder block.

Inspection

INFOID:0000000010782980

INSPECTION AFTER REMOVAL

• Place a thread 

 so that it is caught in the valves of thermostat 

.

Immerse fully in a container 

 filled with water. Heat while stirring.

• The valve opening temperature is the temperature at which the

valve opens and falls from the thread.

• Continue heating. Check the maximum valve lift amount.
• After checking the maximum valve lift amount, lower the water

temperature and check the valve closing temperature. 

• If out of the standard, replace thermostat.

INSPECTION AFTER INSTALLATION

JPBIA4456ZZ

: Up

JPBIA6501ZZ

Standard

Thermostat

: Refer to 

CO-55, "Thermostat"

.

PBIC3314J