Nissan Titan. Instruction — part 72
WATER PUMP
CO-21
< REMOVAL AND INSTALLATION >
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INSTALLATION
Installation is in the reverse order of removal.
• After installation bleed the air from the cooling system. Refer to
CO-11, "Changing Engine Coolant"
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to
MA-15, "FOR NORTH AMERICA : Fluids and Lubricants"
States and Canada) or
MA-16, "FOR MEXICO : Fluids and Lubricants"
• Use procedure below to check for fuel leakage.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-
age at connection points.
• Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-
ified level, if necessary.
• Summary of the inspection items:
*Power steering fluid, brake fluid, etc.
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Transmission/
transaxle fluid
A/T and CVT Models
Leakage
Level/Leakage
Leakage
M/T Models
Level/Leakage
Leakage
Level/Leakage
Other oils and fluids*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gas
—
Leakage
—
CO-22
< REMOVAL AND INSTALLATION >
THERMOSTAT AND WATER PIPING
THERMOSTAT AND WATER PIPING
Exploded View
INFOID:0000000009886481
Removal and Installation
INFOID:0000000009886482
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure
engine coolant escaping from the radiator. Wrap a thick cloth around the radiator cap. Slowly turn it a
quarter of a turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.
CAUTION:
• When removing water pump, be careful not to get engine coolant on drive belt.
• Water pump cannot be disassembled and should be replaced as a unit.
• After installing water pump, connect hoses and clamps securely, then check for leaks.
• Perform when engine is cold.
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
Removal of Thermostat
1. Partially drain engine coolant from the radiator. Refer to
CO-11, "Changing Engine Coolant"
.
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
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< REMOVAL AND INSTALLATION >
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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-27, "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:
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.
Replace the thermostat if the valve opening or closing values are out of the specification range.
INSTALLATION
Installation is in the reverse order of removal.
Installation of Thermostat
Installation is in the reverse order of removal.
• Install the thermostat with the flange securely inside the rubber ring
as shown.
• Install the thermostat with the jiggle valve facing upwards.
Installation of Water Outlet Pipe and Heater Pipe
Installation is in the reverse order of removal.
Apply a mild detergent to the O-rings before installing the water outlet pipe and heater pipe.
INSPECTION AFTER INSTALLATION
• Check for engine coolant leaks. Refer to
.
• Start and warm up the engine. Visually check for engine coolant leaks.
SLC252B
Thermostat
Standard values
Valve opening temperature
.
Full-open lift amount
Refer to
.
Valve closing temperature
.
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
INFOID:0000000009886483
ENGINE COOLANT CAPACITY (APPROXIMATE)
Unit: (US qt, Imp qt)
THERMOSTAT
RADIATOR
Unit: kPa (kg/cm
2
, psi)
Engine coolant capacity (With reservoir at "MAX" level)
12.2 (12-7/8, 10-3/4)
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
Reservoir cap relief pressure
Standard
110 (1.12, 16)
Test pressure
137 (1.4, 20)
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