Nissan Frontier. Manual - part 218

COOLING FAN

CO-19

< REMOVAL AND INSTALLATION >

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COOLING FAN

Exploded View

INFOID:0000000009478165

Removal and Installation (Crankshaft driven type)

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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 cap. Slowly turn it a quarter

of a turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.

NOTE:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-

ing.

REMOVAL

1. Partially drain engine coolant. Refer to 

CO-12, "Changing Engine Coolant"

.

2. Remove air duct and resonator assembly and air duct mounting brackets. Refer to 

EM-25, "Exploded

View"

.

3. Remove upper radiator hose.
4. Disconnect reservoir tank hose from upper shroud and radiator.
5. Remove the upper and lower shrouds. Refer to 

CO-16, "Exploded View"

.

6. Remove drive belt. Refer to 

EM-14, "Removal and Installation"

.

7. Remove cooling fan.
8. Remove fan coupling, if necessary.
9. Remove water pump pulley, if necessary.

INSPECTION AFTER REMOVAL

Fan Coupling

• Inspect fan coupling for oil leakage and bimetal conditions. 

• If there are any concerns, replace the fan coupling.

Cooling Fan

• Inspect cooling fan for cracks or warps.

• If there are any concerns, replace the cooling fan.

INSTALLATION

1.

Cooling fan

2.

Fan coupling

3.

Water pump pulley

AWBIA1006GB

SLC072

CO-20

< REMOVAL AND INSTALLATION >

[QR25DE]

COOLING FAN

Installation is in the reverse order of removal.

• Install cooling fan with its front mark “F” facing front of engine. 

INSPECTION AFTER INSTALLATION

• Check for engine coolant leaks. Refer to 

CO-11, "System Inspection"

.

• Start and warm up the engine. Visually check for engine coolant leaks. Repair as necessary.

WATER PUMP

CO-21

< REMOVAL AND INSTALLATION >

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WATER PUMP

Exploded View

INFOID:0000000009478167

Removal and Installation

INFOID:0000000009478168

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 cap. Slowly turn it a quarter

of a turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.

NOTE:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-

ing.

REMOVAL

1. Drain engine coolant from radiator. Refer to 

CO-12, "Changing Engine Coolant"

.

CAUTION:

• Perform this step when the engine is cold. 

• Do not spill engine coolant on drive belt.

2. Remove cooling fan and water pump pulley. Refer to 

CO-19, "Removal and Installation (Crankshaft driven

type)"

.

3. Remove water pump with power tool.

CAUTION:

• Do not reuse gasket.

1.

Gasket

2.

Water outlet

3.

Water pump pulley

4.

Water pump

5.

Thermostat

6.

O-ring

7.

Water inlet

8.

Water pump and thermostat housing 9.

Heater pipe

10. Water hose

11. Water hose

12. Heater outlet

13. Engine coolant temperature sensor

14. Water control valve

A.

To heater

B.

To electric throttle control actuator

C.

To oil cooler

Front

AWBIA0868GB

CO-22

< REMOVAL AND INSTALLATION >

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WATER PUMP

• 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.

NOTE:

• Engine coolant will leak from cylinder block, so have a receptacle ready below.

INSPECTION AFTER REMOVAL

• Visually check for significant dirt or rust on the water pump body

and vane.

• Check that the vane shaft turns smoothly by hand and is not

excessively loose.

• Replace the water pump assembly if the water pump does not per-

form properly.

INSTALLATION

Installation is in the reverse order of removal.

INSPECTION AFTER INSTALLATION

• Check for engine coolant leaks. Refer to 

CO-11, "System Inspection"

.

• Start and warm up the engine. Visually check for engine coolant leaks. Repair as necessary.

PBIC3011E