Infiniti QX56 (JA60). Manual — part 195
WATER PUMP
CO-21
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INSPECTION AFTER INSTALLATION
• Check for leaks of engine coolant. Refer to
• Start and warm up engine. Visually check for leaks of the engine coolant.
CO-22
< ON-VEHICLE REPAIR >
THERMOSTAT AND WATER PIPING
THERMOSTAT AND WATER PIPING
Exploded View
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Removal and Installation
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REMOVAL
Removal of Thermostat
1. Partially drain engine coolant from the radiator. Refer to
CO-11, "Changing Engine Coolant"
.
CAUTION:
Perform when engine is cold.
2. Disconnect the water suction hose from the water inlet.
3. Remove the water inlet and thermostat.
Removal of Thermostat Housing, Water Outlet and Heater Pipe
1. Remove the intake manifold. Refer to
EM-26, "Removal and Installation"
.
2. Remove the thermostat housing, water outlet and heater pipe.
Removal of Water Cut Valve
1. Partially drain engine coolant from the radiator. Refer to
CO-11, "Changing Engine Coolant"
.
CAUTION:
1.
Heater pipe
2.
Gasket
3.
Water outlet
4.
Gasket
5.
O-ring
6.
O-ring
7.
Thermostat housing
8.
Rubber ring
9.
Thermostat
10.
Water inlet
11.
Water suction hose
12. Water suction pipe
13.
Gasket
14. Heater pipe
KBIA2501E
THERMOSTAT AND WATER PIPING
CO-23
< ON-VEHICLE REPAIR >
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Perform when the engine is cold.
2. Disconnect the water cut valve connector.
3. Disconnect the water hoses from the water cut valve.
4. Remove the water cut valve.
INSPECTION AFTER REMOVAL
• Place a thread so that it is caught in the valve of the 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 lift amount.
• After checking the full-open lift amount, lower the water tempera-
ture and check the valve closing temperature.
Standard values:
INSTALLATION
Installation is in the reverse order of removal.
Installation of Thermostat
• Install the thermostat with the whole circumference of each flange
part fit securely inside the rubber ring as shown.
• Install the thermostat with the jiggle valve facing upwards.
Installation of Water Outlet Pipe and Heater Pipe
First apply a neutral detergent to the O-rings, then quickly insert the insertion parts of the water outlet pipe and
heater pipe into the installation holes.
INSPECTION AFTER INSTALLATION
• Check for leaks of the engine coolant. Refer to
• Start and warm up the engine. Visually check for leaks of the engine coolant.
SLC252B
Thermostat
Valve opening temperature
80 - 84
°C (176 - 183° F)
Full-open lift amount
More than 10 mm/ 95
°C (0.39 in/ 203°F)
Valve closing temperature
77
°C (171°F) or higher
KBIA2502E
CO-24
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Standard and Limit
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ENGINE COOLANT CAPACITY (APPROXIMATE)
Unit: (US qt, Imp qt)
THERMOSTAT
RADIATOR
Unit: kPa (kg/cm
2
, psi)
Engine coolant capacity with reservoir ("MAX" level)
14.4 (15 1/4, 12 5/8)
Valve opening temperature
80 - 84
°C (176 - 183°F)
Maximum valve lift
More than 10 mm/95
°C (0.39 in/203°F)
Valve closing temperature
77
°C (171°F) or higher
Reservoir cap relief pressure
Standard
95 - 125 (0.97- 1.28, 14 - 18)
Leakage test pressure
137 (1.4, 20)
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