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-
.
Disassembly and Assembly
INFOID:0000000010675859
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
INFOID:0000000010665085
Removal and Installation
INFOID:0000000010665086
REMOVAL
1.
Drain engine coolant from radiator. Refer to
CAUTION:
Perform this step when the engine is cold.
2.
Remove front wheel (RH). Refer to
WT-60, "Removal and Installation"
(with TPMS) or
(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
INFOID:0000000010665087
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
.
• Start and warm up the engine. Check visually that there is no leakage of engine coolant.
PBIC3313J
THERMOSTAT
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< REMOVAL AND INSTALLATION >
[MR20DD]
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THERMOSTAT
Exploded View
INFOID:0000000010665088
Removal and Installation
INFOID:0000000010665089
REMOVAL
1.
Drain engine coolant from radiator. Refer to
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
.
5.
Remove thermostat housing with the following procedure:
a.
Remove water pump. Refer to
.
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
(Type 1),
(Type 2),
(Type 3) or
(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
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