Infiniti Q45. Manual — part 281
RADIATOR (ALUMINUM TYPE)
CO-17
C
D
E
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4.
Make sure that the rim is completely crimped down.
5.
Confirm that there is no leakage. Refer to
INSPECTION
1.
Apply pressure with the radiator cap tester adapter (SST) and
the radiator cap tester (commercial service tool).
●
Provide used radiator and connect it to tested radiator using
radiator hoses as shown in the figure.
NOTE:
The used radiator should be tested beforehand to confirm it
has no leakage. If used one is not available, it is possible to
use new service part as a radiator testing tool.
WARNING:
To prevent the risk of the hose coming undone while under pressure, securely fasten it down with
a hose clamp.
CAUTION:
Attach a hose to A/T fluid cooler to seal its inlet and outlet.
2.
Check for leakage by soaking radiator in the water container
with the testing pressure applied.
Standard height “H”
: 8.0 - 8.4 mm (0.315 - 0.331 in)
SLC554A
Testing pressure
: 157 kPa (1.6 kg/cm
2
, 23 psi)
PBIC1658E
PBIC1699E
CO-18
COOLING FAN
COOLING FAN
PFP:21140
Removal and Installation
NBS001PR
REMOVAL
1.
Remove air duct (inlet), battery cover and air cleaner cover. Refer to
2.
Remove engine undercover with power tool.
3.
Drain engine coolant from radiator. Refer to
CO-8, "Changing Engine Coolant"
CAUTION:
Perform when engine is cold.
4.
Remove battery. Refer to
SC-8, "Removal and Installation"
.
5.
Disconnect radiator hoses (upper and lower).
6.
Remove A/T fluid cooler hose from fan shroud.
7.
Disconnect harness connector from cooling fan motors.
8.
Remove cooling fan shroud mounting bolts.
9.
Remove radiator mounting bracket. With radiator moved toward the vehicle front, lift up and remove cool-
ing fan shroud.
CAUTION:
Be careful not to scratch or damage radiator core.
INSTALLATION
Note the following, and install in the reverse order of removal.
NOTE:
Cooling fan is controlled by ECM. For details, refer to
EC-514, "DTC P1217 ENGINE OVER TEMPERATURE"
.
1.
Cooling fan motor
2.
Cooling fan shroud
3.
Cooling fan (right)
4.
Cooling fan (left)
PBIC2777E
COOLING FAN
CO-19
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Disassembly and Assembly
NBS001PS
DISASSEMBLY
1.
Remove cooling fans.
2.
Remove cooling fan motors from cooling fan shroud.
INSPECTION AFTER DISASSEMBLY
Cooling Fan
Inspect cooling fan for crack or unusual bend.
●
If anything is found, replace cooling fan.
ASSEMBLY
Assemble is the reverse order of disassembly.
CAUTION:
Cooling fans are different between right and left. Be careful not to misassemble them.
CO-20
WATER PUMP
WATER PUMP
PFP:21020
Removal and Installation
NBS001PT
WARNING:
Do not remove radiator cap when engine is hot. Serious burns could occur from high pressure engine
coolant escaping from thermostat housing.
REMOVAL
1.
Drain engine coolant. Refer to
CO-8, "Changing Engine Coolant"
CAUTION:
Perform when engine is cold.
2.
Remove the following parts.
●
Engine undercover
●
Air duct (inlet) and engine cover, refer to
EM-13, "Removal and Installation"
.
●
Alternator, water pump and A/C compressor belt, refer to
EM-14, "Removal and Installation"
CAUTION:
Leave auto tensioner pulley in its fixed position when removing drive belt.
3.
Remove water pump pulley.
4.
Remove water pump.
●
Remove water pump with lightly tapping it using wooden piece.
INSPECTION AFTER REMOVAL
●
Visually make sure that there is no significant dirt or rusting on
water pump body and vane.
●
Make sure that there is no looseness in vane shaft, and that it
turns smoothly when rotated by hand.
●
If there are any unusualness, replace water pump.
INSTALLATION
●
Install in the reverse order of removal.
1.
Water pump
2.
Water pump pulley
3.
Gasket
SBIA0420E
PBIC1539E
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