Infiniti FX35, FX50 (S51). Manual - part 449

RADIATOR

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< REMOVAL AND INSTALLATION >

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b.

Remove radiator (1) from front of radiator core support (2).

INSTALLATION

Installation is the reverse order of removal.

Inspection

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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 

CO-33, "Inspection"

.

• Start and warm up the engine. Visually check that there is no leakage of engine coolant and A/T fluid.

: Vehicle front

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< REMOVAL AND INSTALLATION >

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COOLING FAN

COOLING FAN

Exploded View

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Removal and Installation

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REMOVAL

1.

Drain engine coolant. Refer to 

CO-33, "Draining"

.

2.

Remove reservoir tank. Refer to 

CO-39, "Exploded View"

.

3.

Remove air cleaner case. Refer to 

EM-177, "Exploded View"

.

4.

Remove mounting bolt from high pressure flexible hose bracket. Refer to 

HA-96, "Exploded View"

.

5.

Remove radiator hose (upper). Refer to 

CO-39, "Exploded View"

.

6.

Disconnect harness connector from cooling fan control modules, and move harness to aside.

7.

Remove cooling fan assembly.

CAUTION:

Be careful not to damage or scratch on radiator core.

INSTALLATION

Note the following, and install in the reverse order of removal.

CAUTION:

Only use genuine parts for cooling fan mounting bolt and observe the specified torque (to prevent
radiator from being damaged).

Disassembly and Assembly

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DISASSEMBLY

1.

Disconnect harness connector from cooling fan control modules.

2.

Remove cooling fan control modules from cooling fan assembly.

CAUTION:

Handle carefully to avoid dropping and impact.

1.

Cooling fan (RH)

2.

Cooling fan (LH)

3.

Fan shroud

4.

Fan motor (LH)

5.

Cooling fan control module

6.

Fan motor (RH)

7.

Cooling fan control module

8.

Grommet

A.

Apply on fan motor shaft

 : Apply high strength thread locking sealant or equivalent.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

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COOLING FAN

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< REMOVAL AND INSTALLATION >

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3.

Remove cooling fan mounting nuts, and then remove the cooling fan (RH and LH).

4.

Remove fan motors (RH and LH).

ASSEMBLY

Note the following, and assemble in the reverse order of disassembly.

CAUTION:

RH and LH cooling fans are different. Be careful not to misassemble them.
• Install each fan in the following position.

• Secure the harness tightly to the fan shroud to prevent the fan rotation area from being slack.

Inspection

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INSPECTION AFTER REMOVAL

Check that fan motors operate normally.
NOTE:
Cooling fans are controlled by cooling fan control module. For details, refer to 

EC-1096, "Description"

.

INSPECTION AFTER DISASSEMBLY

Cooling Fan

Inspect cooling fan for crack or unusual bend.
• If anything is found, replace cooling fan.

Right side

: 9 blades

Left side

: 11 blades

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< REMOVAL AND INSTALLATION >

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WATER PUMP

WATER PUMP

Exploded View

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Removal and Installation

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CAUTION:

• When removing water pump assembly, be careful not to get engine coolant on drive belts.
• Water pump cannot be disassembled and should be replaced as a unit.
• After installing water pump, connect hose and clamp securely, then check for leakage using the radi-

ator cap tester (commercial service tool) and the radiator cap tester adapter (commercial service
tool).

REMOVAL

1.

Remove following parts: 
• Engine undercover, using a power tool.
• Engine cover and engine room cover (RH and LH). Refer to 

EM-174, "Exploded View"

.

• Air duct (inlet): Refer to 

EM-177, "Exploded View"

.

• Reservoir tank. Refer to 

CO-39, "Exploded View"

.

2.

Loosen water pump pulley mounting bolts.

3.

Remove alternator, water pump and A/C compressor belt: Refer to 

EM-164, "Removal and Installation"

.

4.

Remove water pump pulley.

5.

Drain engine coolant from drain plugs on radiator and cylinder block. Refer to 

CO-33, "Draining"

 and 

EM-

202, "Setting"

.

CAUTION:

• Perform this step when engine is cold.
• Never spill engine coolant on drive belt.

6.

Remove water pump. Refer to 

CO-44, "Exploded View"

.

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

1.

Water pump pulley

2.

Water pump

3.

Gasket

Refer to 

GI-4, "Components"

 for symbols in the figure.

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