Nissan Frontier. Manual - part 225

ENGINE COOLING FAN

CO-47

< REMOVAL AND INSTALLATION >

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ENGINE COOLING FAN

Exploded View

INFOID:0000000009478188

Crankshaft Driven Type

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. Remove the engine cooling fan (Motor driven type). Refer to 

CO-48, "Removal and Installation (Motor

driven type)"

.

2. Remove reservoir tank hose from shroud.
3. Removal radiator hose (upper) from radiator.

CAUTION:

Do not spill engine coolant on drive belts.

4. Release the radiator shroud (lower) (2) from the radiator shroud

(upper) (1) and position aside. 

• Release the tabs, pull radiator shroud (lower) (2) rearwards

and down.

5. Remove the radiator shroud (upper) bolts and remove the radiator shroud (upper). Refer to 

CO-44,

"Exploded View"

.

6. Remove the drive belt. Refer to 

EM-129, "Removal and Installation"

.

7. Remove the engine cooling fan.
8. Remove the fan coupling, if necessary.
9. Remove the cooling fan pulley, if necessary.
10. Remove the drive belt auto-tensioner, if necessary. 
11. Remove the fan bracket, if necessary.

INSPECTION AFTER REMOVAL

AWBIA1124GB

1.

Cooling fan

2.

Fan coupling

3.

Fan bracket

4.

Cooling fan pulley

5.

Stud

F.

Front mark

ALBIA0470ZZ

CO-48

< REMOVAL AND INSTALLATION >

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ENGINE COOLING FAN

Fan Coupling

• Inspect fan coupling for oil leakage and bimetal conditions. 

• If there are any concerns replace the fan coupling.

Fan Bracket

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

excessively loose.

• If there are any concerns replace the fan bracket assembly.

INSTALLATION

Installation is in the reverse order of removal.

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

CO-47, "Exploded View"

.

INSPECTION AFTER INSTALLATION

• Check for engine coolant leaks. Refer to 

CO-39, "System Inspection"

.

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

Removal and Installation (Motor driven type)

INFOID:0000000009478190

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 from radiator. Refer to 

CO-40, "Changing Engine Coolant"

.

CAUTION:

• Perform this step when engine is cold.

• Do not spill engine coolant on drive belts.

2. Release the radiator shroud (lower) (2) from the radiator shroud

(upper) (1) and position aside. 

• Release the tabs, pull radiator shroud (lower) (2) rearwards

and down.

3. Remove engine room cover. Refer to 

EM-140, "Removal and Installation"

.

4. Remove air duct and resonator assembly. Refer to 

EM-141, "Removal and Installation"

.

5. Remove upper radiator hose from radiator.

SLC072

LBIA0422E

ALBIA0470ZZ

ENGINE COOLING FAN

CO-49

< REMOVAL AND INSTALLATION >

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6. Remove reservoir tank hose from radiator shroud (upper) and radiator.
7. Remove the radiator shroud (upper) bolts and remove the radiator shroud (upper). Refer to 

CO-44,

"Exploded View"

.

8. Disconnect harness connector from fan motor.
9. Remove the bolt and remove the fan grille and motor assembly. 

INSTALLATION

Installation is in the reverse order of removal.

• Cooling fan is controlled by ECM. Refer to 

EC-840, "Diagnosis Procedure"

.

AWBIA0148ZZ

CO-50

< REMOVAL AND INSTALLATION >

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WATER PUMP

WATER PUMP

Exploded View

INFOID:0000000009478191

Removal and Installation

INFOID:0000000009478192

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.

CAUTION:

• When removing water pump assembly, be careful not to get engine coolant on timing chain and drive

belt.

• Water pump cannot be disassembled and should be replaced as a unit.

• After installing water pump, connect hose and clamp securely, then check for leaks.

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-40, "Changing Engine Coolant"

.

CAUTION:

• Perform this step when engine is cold.

• Do not spill engine coolant on timing chain and drive belt.

2. Remove water drain plug (front) (1) on the water pump side of

the cylinder block.

1.

Water pump

2.

Timing chain tensioner (primary)

3.

Chain tensioner cover

4.

Water drain plug (front)

5.

Water pump cover

6.

O-ring

7.

O-ring

PBIC2833E

ALBIA0679ZZ