Nissan Qashqai J11. Manual - part 161

CO-48

< REMOVAL AND INSTALLATION >

[MR20DD]

COOLING FAN

Cooling fan is controlled by ECM. For details, Refer to 

ECH-31, "COOLING FAN CONTROL : System Descrip-

tion"

.

Disassembly and Assembly

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DISASSEMBLY

1.

Remove cooling fan mounting nut, and then remove the cooling fan.

2.

Remove fan motor.

ASSEMBLY

Note the following, and assemble in the reverse order of disassembly.
• Apply genuine high strength thread locking sealant on fan motor shaft.

Inspection

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INSPECTION AFTER DISASSEMBLY

Cooling Fan

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

WATER PUMP

CO-49

< REMOVAL AND INSTALLATION >

[MR20DD]

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WATER PUMP

Exploded View

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Removal and Installation

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REMOVAL

1.

Drain engine coolant from radiator. Refer to 

CO-38, "Draining"

.

CAUTION:

Perform this step when the engine is cold.

2.

Remove front wheel (RH). Refer to 

WT-60, "Removal and Installation"

 (with TPMS) or 

WT-73, "Removal

and Installation"

 (without TPMS).

3.

Remove front fillet molding (RH). Refer to 

EXT-37, "Removal and Installation"

.

4.

Remove front fender protector. Refer ro 

EXT-32, "Removal and Installation"

.

5.

Remove drive belts. Refer to 

EM-139, "Removal and Installation"

.

6.

Remove water pump.
• Engine coolant leakage from cylinder block, so have a receptacle ready below.

CAUTION:

• 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.

INSTALLATION

Install in the reverse order of removal.

Inspection

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INSPECTION AFTER REMOVAL

Pulley

Water pump

Gasket

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

JSBIA1603GB

CO-50

< REMOVAL AND INSTALLATION >

[MR20DD]

WATER PUMP

• Check visually that there is no significant dirt or rusting on water

pump body and vane 

.

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

smoothly when rotated by hand.

• Replace water pump, if necessary.

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-38, "Inspection"

.

• Start and warm up the engine. Check visually that there is no leakage of engine coolant.

PBIC3313J

THERMOSTAT

CO-51

< REMOVAL AND INSTALLATION >

[MR20DD]

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THERMOSTAT

Exploded View

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Removal and Installation

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REMOVAL

1.

Drain engine coolant from radiator. Refer to 

CO-38, "Draining"

. 

CAUTION:

Perform this step when engine is cold.

2.

Disconnect radiator hose (lower) from water inlet.

3.

Remove water inlet and thermostat.
• Engine coolant leakage from cylinder block, so have a receptacle ready below.

4.

Disconnect the battery cable from the negative terminal. Refer to 

PG-154, "Exploded View"

.

5.

Remove thermostat housing with the following procedure:

a.

Remove water pump. Refer to 

CO-49, "Exploded View"

.

b.

Remove alternator. Refer to 

CHG-52, "MR20DD : Removal and Installation"

.

c.

Remove A/C compressor with A/C piping connected, and temporarily fasten it on vehicle with a rope.
Refer to 

HA-31, "Exploded View"

 (Type 1), 

HA-74, "Exploded View"

 (Type 2), 

HA-121, "Exploded View"

(Type 3) or 

HA-169, "Exploded View"

 (Type 4).

d.

Remove water hoses.

e.

Remove thermostat housing.

Thermostat housing

Gasket

Rubber ring

Thermostat

Water inlet

To oil cooler

To radiator

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

JSBIA4314GB