Infiniti QX56 (Z62). Manual - part 239

CO-16

< REMOVAL AND INSTALLATION >

COOLING FAN

COOLING FAN

Exploded View

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Removal and Installation

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REMOVAL

1.

Remove front under cover with power tool. Refer to 

EXT-25, "Exploded View"

.

2.

Remove fan shroud (lower). Refer to 

CO-13, "Exploded View"

.

3.

Move reservoir tank to the position without the hindrance for work, refer to following.
• Remove fixed bolts
• Remove reservoir tank hose clamp.

4.

Remove radiator core support cover. Refer to 

DLK-220, "Exploded View"

.

5.

Remove fan shroud (upper), refer to following.
• Remove EVAP hose.
• Remove fan shroud (upper) mounting bolts. Refer to 

CO-13, "Exploded View"

.

• Move air cleaner to the position without the hindrance for work.
• Remove engine cover. Refer to 

EM-25, "Exploded View"

.

6.

Remove cooling fan.

7.

Remove drive belt. Refer to 

EM-20, "Exploded View"

.

8.

Disconnect fan coupling harness connector.

9.

Remove fan coupling.

10. Remove bracket.

11. Remove cooling fan pulley.

12. Remove Idler pulley.

1.

Fan bracket

2.

Cooling fan pulley

3.

Fan coupling

4.

Bracket

5.

Cooling fan

Refer to 

GI-4, "Components"

 for symbols not described on the above.

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COOLING FAN

CO-17

< REMOVAL AND INSTALLATION >

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13. Remove the fan bracket, refer to following. 

• Disconnect A/C compressor harness connector. Refer to 

HA-30, "Exploded View"

.

• Remove A/C compressor mounting bolt. Refer to 

HA-30, "Exploded View"

.

• Remove fan bracket mounting bolt.

INSTALLATION

Installation is in the reverse order of removal.

Inspection

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INSPECTION AFTER REMOVAL

Fan Coupling

Inspect fan coupling for oil leakage and bimetal conditions. 

Fan Bracket

• Visually check that there is no significant looseness in the fan

bracket shaft, and that it turns smoothly by hand.

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

INSPECTION AFTER INSTALLATION

• Check for leaks of the engine coolant. Refer to 

CO-8, "Inspection"

.

• Start and warm up the engine. Visually make sure that there are no leaks of the engine coolant.

SLC072

WBIA0418E

CO-18

< REMOVAL AND INSTALLATION >

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.

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

CO-8, "Draining"

 and 

EM-

103, "Setting"

.

CAUTION:

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

2.

Remove front under cover with power tool. Refer to 

EXT-25, "Exploded View"

.

3.

Remove fan shroud (lower). Refer to 

CO-13, "Exploded View"

. 

4.

Move reservoir tank to the position with out the hindrance for work. Refer to 

CO-13, "Exploded View"

.

5.

Remove radiator core support cover. Refer to 

DLK-220, "Exploded View"

.

6.

Remove fan shroud (upper). Refer to 

CO-13, "Exploded View"

.

7.

Remove drive belt. Refer to 

EM-20, "Exploded View"

.

8.

Remove cooling fan, fan coupling, cooling fan pulley and bracket. Refer to 

CO-16, "Exploded View"

9.

Remove radiator hose (upper). Refer to 

CO-13, "Exploded View"

.

10. Remove water pump pulley.

1.

Water pump pulley

2.

Water pump

3.

Gasket

Refer to 

GI-4, "Components"

 for symbols in the figure.

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WATER PUMP

CO-19

< REMOVAL AND INSTALLATION >

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11. Remove water pump. Refer to 

CO-18, "Exploded View"

.

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

CAUTION:

• Handle the water pump vane so that it does not contact any other parts.
• Never disassemble water pump.

INSTALLATION

Install in the reverse order of removal.

Inspection

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INSPECTION AFTER REMOVAL

• Visually check that there is no significant dirt or rusting on water

pump body and vane (A). 

• Check there is no slack in vane shaft, and that it turns smoothly

when rotated by hand.

• If anything is found, replace water pump.

INSPECTION AFTER INSTALLATION

• Check that the reservoir tank cap is tightened.
• 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-8, "Inspection"

.

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

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