2004 INFINITI FX35 radiator cap

CO-38
[VK45DE]
ENGINE COOLANT
Revision: 2004 November 2004 FX35/FX45
10. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between “COOL” and “WARM”.

Sound may be noticeable at heater unit.
11. Repeat step 10 three times.
12. If sound is heard, bleed air from cooling system by repeating steps 3 through 6 until engine coolant level
no longer drops.

Clean excess engine coolant from engine.
FLUSHING COOLING SYSTEM
1. Install reservoir tank, and radiator drain plug.
If cylinder block water drain plugs are removed, close and tighten them. Refer to EM-244, "
ASSEM-
BLY" .
2. Fill thermostat housing with water until water spills from the air relief hole, then close air relief plug. Fill
thermostat housing and reservoir tank with water and reinstall radiator cap.
3. Run engine and warm it up to normal operating temperature.
4. Rev engine two or three times under no-load.
5. Stop engine and wait until it cools down.
6. Drain water from the system. Refer to CO-36, "
DRAINING ENGINE COOLANT" .
7. Repeat steps 1 through 5 until clear water begins to drain from radiator.Radiator drain plug:
: 1.19 N·m (0.12 kg-m, 11 in-lb)

RADIATOR
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Revision: 2004 November 2004 FX35/FX45
RADIATORPFP:21400
Removal and InstallationABS006JS
WARNING:
Never remove radiator cap when engine is hot. Serious burns could occur from high-pressure engine
coolant escaping from thermostat housing.
REMOVAL
1. Remove engine cover with power tool. Refer to EM-168, "ENGINE ROOM COVER" .
2. Remove engine front undercover with power tool.
3. Drain engine coolant from radiator. Refer to CO-36, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
4. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly. Refer to EM-172, "
AIR
CLEANER AND AIR DUCT" .
5. Remove radiator hoses (upper and lower).
CAUTION:
Be careful not to allow engine coolant to drive belts.
6. Disconnect A/T fluid cooler hoses.
1. Radiator 2. Upper mount bracket 3. Mounting rubber
4. Radiator hose (lower) 5. Radiator drain plug 6. O-ring
7. A/T fluid cooler hose 8. Radiator hose (upper) 9. Reservoir tank hose
10. Reservoir tank cap 11. Reservoir tank 12. Radiator shroud (lower)
13. Radiator shroud
PBIC1531E

RADIATOR
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Revision: 2004 November 2004 FX35/FX45
11. Lift up and remove radiator.
CAUTION:
Do not damage or scratch A/C condenser and radiator core
when removing.
INSTALLATION
Install in the reverse order of removal.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
radiator cap tester (commercial service tool). Refer to CO-36, "
LEAK CHECK" .

Start and warm up engine. Visually make sure that there is no leaks of engine coolant and A/T fluid.
Checking Radiator CapABS008FY
1. Pull negative-pressure valve to open it and make sure that it
closes completely when released.

Make sure that there is no dirt or damage on the valve seat of
radiator cap negative-pressure valve.

Make sure that there are no unusualness in the opening and
closing conditions of negative-pressure valve.
2. Check radiator cap relief pressure.

When connecting radiator cap to radiator cap tester (commer-
cial service tool) and radiator cap tester adapter [SST], apply
engine coolant to the cap seal surface.

Replace radiator cap if there is an unusualness in negative-
pressure valve, or if the relief pressure exceed the limit.
Checking RadiatorABS008FZ
Check radiator for mud or clogging. If necessary, clean radiator as follows:
CAUTION:

Be careful not to bend or damage the radiator fins.

When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radi-
ator shroud and horns. Then tape the harness and electrical connectors to prevent water from
entering.
1. Apply water by hose to the back side of the radiator core vertically downward.
2. Apply water again to all radiator core surface once per minute.
3. Stop washing if any stains no longer flow out from radiator.
4. Blow air into the back side of radiator core vertically downward.
PBIC1536E
SMA967B
Standard:
78 - 98 kPa (0.8 - 1.0 kg/cm
2 , 11 - 14 psi)
Limit:
59 kPa (0.6 kg/cm
2 , 9 psi)
SLC755A

CO-46
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RADIATOR (ALUMINUM TYPE)
Revision: 2004 November 2004 FX35/FX45

Use pliers in the locations where radiator plate pliers A cannot
be used.
5. Make sure that the rim is completely crimped down.
6. Make sure that there is no leakage.
Refer to CO-46, "
INSPECTION" .
INSPECTION
1. Apply pressure with radiator cap tester adapter (SST) and radia-
tor 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 hose coming undone while under pressure, securely fasten it down with
hose clamp.
CAUTION:
Attach hose to A/T fluid cooler to seal its inlet and outlet.
2. Check for leakage by soaking radiator in water container with
the testing pressure applied.
SLC897
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

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WATER PUMP
Revision: 2004 November 2004 FX35/FX45
INSTALLATION
Install in the reverse order of removal.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
radiator cap tester (commercial service tool). Refer to CO-36, "
LEAK CHECK" .

Start and warm up engine. Visually make sure that there is no leaks of engine coolant.

THERMOSTAT AND WATER CONTROL VALVE
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Revision: 2004 November 2004 FX35/FX45
THERMOSTAT AND WATER CONTROL VALVEPFP:21200
Removal and InstallationABS006JP
REMOVAL
1. Drain engine coolant from drain plugs on radiator and both side of cylinder block. Refer to CO-36, "Chang-
ing Engine Coolant" and EM-241, "DISASSEMBLY" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
2. Remove engine cover with power tool. Refer to EM-168, "
ENGINE ROOM COVER" .
3. Remove air duct (inlet). Refer to EM-172, "
AIR CLEANER AND AIR DUCT" .
4. Disconnect water suction hose from water inlet.
5. Remove water inlet and thermostat.
CAUTION:
Do not disassemble thermostat.
6. Remove intake manifolds (upper and lower). Refer to EM-174, "
INTAKE MANIFOLD" .
1. Water connector 2. O-ring 3. Rubber ring
4. Heater hose 5. Water control valve 6. Water outlet
7. Gasket 8. O-ring 9. Water outlet pipe
10. Thermostat housing 11. Radiator cap 12. Radiator hose (upper)
13. Thermostat 14. Rubber ring 15. Water inlet
16. Water suction hose 17. Water suction pipe 18. Radiator hose (lower)
19. Gasket 20. O-ring 21. Heater pipe
22. Heater hose 23. Water hose 24. Water hose
PBIC1561E

THERMOSTAT AND WATER CONTROL VALVE
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Revision: 2004 November 2004 FX35/FX45

Install thermostat with jiggle valve facing upwards. (The position
deviation may be within the range of ±10 degrees)

Install water control valve with the up-mark facing up and the
frame center part facing upwards. (The position deviation may
be within the range of ±10 degrees)
Water Outlet Pipe and Heater Pipe
First apply a neutral detergent to O-rings, then quickly insert the insertion parts of the water outlet pipe and
heater pipe into the installation holes.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
radiator cap tester (commercial service tool). Refer to CO-36, "
LEAK CHECK" .

Start and warm up engine. Visually make sure that there is no leaks of engine coolant.
PBIC0158E

CO-54
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SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2004 November 2004 FX35/FX45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitABS006JQ
ENGINE COOLANT CAPACITY (APPROXIMATE)
Unit: (US qt, Imp qt)
RADIATOR
Unit: kPa (kg/cm2 , psi)
THERMOSTAT
WATER CONTROL VALVE
Engine coolant capacity (With reservoir tank at “MAX” level) 10.0 (10-5/8, 8-3/4)
Reservoir tank engine coolant capacity (at “MAX” level) 0.8 (7/8, 3/4)
Radiator cap relief pressureStandard 78 - 98 (0.8 - 1.0, 11 - 14)
Limit 59 (0.6, 9)
Leakage test pressure 157 (1.6, 23)
Valve opening temperature 80 - 84°C (176 - 183°F)
Maximum valve lift More than 10 mm/ 95°C (0.39 in/ 203°F)
Valve closing temperature 77°C (171°F)
Valve opening temperature 93.5 - 96.5°C (200 - 206°F)
Maximum valve lift More than 8 mm/ 108°C (0.315 in/ 226°F)
Valve closing temperature 90°C (194°F)