Nissan X-Trail 32. Instruction — part 300
CO-26
< REMOVAL AND INSTALLATION >
[MR20DD]
THERMOSTAT
THERMOSTAT
Exploded View
INFOID:0000000010782945
Removal and Installation
INFOID:0000000010782946
REMOVAL
1.
Remove engine under cover. Refer to
EXT-39, "ENGINE UNDER COVER : Exploded View"
2.
Drain engine coolant from radiator. Refer to
.
CAUTION:
Perform this step when engine is cold.
3.
Disconnect radiator hose (lower) from water inlet. Refer to
.
4.
Remove water inlet and thermostat.
• Engine coolant leakage from cylinder block, so have a receptacle ready below.
5.
Disconnect the battery cable from the negative terminal. Refer to
.
6.
Remove thermostat housing with the following procedure:
a.
Remove water pump. Refer to
.
b.
Remove alternator. Refer to
CHG-44, "MR20DD : Exploded View"
c.
Remove A/C compressor with A/C piping connected, and temporarily fasten it on vehicle with a rope.
Refer to
.
Thermostat housing
Gasket
Rubber ring
Thermostat
Water inlet
To oil cooler
To radiator
: Engine front
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
JSBIA4314GB
THERMOSTAT
CO-27
< REMOVAL AND INSTALLATION >
[MR20DD]
C
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d.
Remove water hoses. Refer to
e.
Remove thermostat housing.
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.
Inspection
INFOID:0000000010782947
INSPECTION AFTER REMOVAL
Thermostat
• 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 full open 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
• 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 the engine. Check visually that there is no leakage of engine coolant.
JPBIA5191ZZ
: Thermostat housing
PBIC3548J
Standard: Refer to
.
PBIC3314J
CO-28
< REMOVAL AND INSTALLATION >
[MR20DD]
WATER OUTLET
WATER OUTLET
Exploded View
INFOID:0000000010782948
Removal and Installation
INFOID:0000000010782949
REMOVAL
1.
Drain engine coolant from radiator. Refer to
.
CAUTION:
• Perform this step when engine is cold.
• Never spill engine coolant on drive belts.
2.
Remove air duct 1 and air duct 2. Refer to
3.
Remove battery. Refer to
PG-140, "EXCEPT FOR R9M : Exploded View"
4.
Remove battery tray. Refer to
PG-146, "EXCEPT FOR R9M : Exploded View"
.
5.
Disconnect radiator hose (upper) form water outlet. Refer to
6.
Disconnect harness connector from engine coolant temperature sensor.
Water control valve
Rubber ring
Water outlet
Engine coolant temperature sensor
Clamp
Water hose
Water hose
To radiator
To CVT oil warmer (CVT models)
To heater
To heater
: Engine front
: 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.
JPBIA6912GB
WATER OUTLET
CO-29
< REMOVAL AND INSTALLATION >
[MR20DD]
C
D
E
F
G
H
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7.
Remove heater hoses
and water hose
(CVT models).
8.
Remove water outlet.
INSTALLATION
Note the following, and install in the reverse order of removal.
Water Control Valve
• Install water control valve with making rubber ring
groove fit to
water control valve flange
with the whole circumference.
• Install water control valve
with the arrow
facing up and the
frame center part
facing upwards.
Inspection
INFOID:0000000010782950
INSPECTION AFTER REMOVAL
Water Control Valve
• Place a thread
so that it is caught in the valves of water control
valve
. 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 continuous valve lifting toward maxi-
mum valve lift.
NOTE:
The maximum valve lift amount standard temperature for water
control valve is the reference value.
• After checking the maximum valve lift amount, lower the water
temperature and check the valve closing temperature.
: Water outlet
JPBIA6844ZZ
JPBIA5193ZZ
: Water outlet
JPBIA5194ZZ
PBIC3314J
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