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
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
CAUTION:
Plug the oil level gauge guide opening to prevent oil pan from entering foreign materials.
b.
Remove exhaust manifold. Refer to
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]
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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
• 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
.
2.
Drain engine coolant. Refer to
CAUTION:
Perform this step when engine is cold.
3.
Remove exhaust manifold cover. Refer to
4.
Disconnect radiator hose (lower) at water inlet side. Refer to
.
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]
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1.
Remove air duct 1 and air duct 2. Refer to
.
2.
Drain engine coolant. Refer to
.
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
PBIC3314J
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