radiator INFINITI FX35 2004 Owner's Manual

ENGINE COOLANT
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Revision: 2004 November 2004 FX35/FX45
ENGINE COOLANTPFP:KQ100
InspectionABS004T8
LEVEL CHECK

Check if the reservoir tank engine coolant level is within the
“MIN” to “MAX” when engine is cool.

Adjust the engine coolant level as necessary.
CHECKING COOLING SYSTEM FOR LEAKS

To check for leaks, apply pressure to the cooling system with
radiator cap tester (commercial service tool) and radiator cap
tester adapter (SST).
WARNING:
Do not remove radiator cap when engine is hot. Serious
burns could occur from high-pressure engine coolant
escaping from radiator.
CAUTION:
Higher test pressure than specified may cause radiator
damage.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.

If anything is found, repair or replace damaged parts.
Changing Engine CoolantABS004T9
WARNING:

To avoid being scalded, never change engine coolant when engine is hot.

Wrap a thick cloth around cap and carefully remove cap. First, turn cap a quarter of a turn to
release built-up pressure. Then turn cap all the way.
DRAINING ENGINE COOLANT
1. Remove front engine undercover with power tool.
2. Open radiator drain plug at the bottom of radiator, and remove
radiator cap.
CAUTION:
Be careful not to allow engine coolant to contact drive belts.
When drain all of engine coolant in the system, open water drain plugs on cylinder block. Refer to
EM-121, "
DISASSEMBLY" .
3. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
SMA412B
Testing pressure
: 157 kPa (1.6 kg/cm
2 , 23 psi)
SLC756A
SBIA0444E

CO-12
[VQ35DE]
ENGINE COOLANT
Revision: 2004 November 2004 FX35/FX45
If contaminated, flush the engine cooling system. Refer to CO-13, "FLUSHING COOLING SYSTEM" .
4. Remove reservoir tank, drain engine coolant and clean reservoir tank before installing.
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plugs are removed, close and tighten them. Refer to EM-126, "
ASSEMBLY" .
2. Remove air relief plug on heater hose.
3. Fill radiator and reservoir tank to specified level.

Use Genuine Nissan Long Life Antifreeze/ Coolant or
equivalent mixed with water (distilled or demineralized).
Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRI-
CANTS".

Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2-1/8 US qt,1-3/4 lmp qt) a minute
to allow air in system to escape.

When engine coolant overflows air relief hole on heater hose,
install air relief plug with new O-ring.
4. Warm up engine to normal operating temperature with radiator cap installed.
5. Run engine at 3,000 rpm for 10 seconds and return to idle speed.

Repeat two or three times.
CAUTION:
Watch engine coolant temperature gauge so as not to overheat engine.
6. Stop engine and cool down to less than approximately 50°C (122°F).

Cool down using a fan to reduce the time.

If necessary, refill radiator up to filler neck with engine coolant.
7. Refill reservoir tank to “MAX” level line with engine coolant.Radiator drain plug:
: 1.18 N·m (0.12 kg-m, 10 in-lb)
SBIA0445E
Engine coolant capacity
(with reservoir tank at “MAX” level)
: Approximately 8.6 (9-1/8 US qt, 7-5/8 lmp qt)
SMA182B
Reservoir tank engine coolant capacity (at “MAX” level)
: 0.8 (7/8 US qt, 3/4 lmp qt)
Air relief plug:
: 1.19 N·m (0.12 kg-m, 10 ft-lb)
SMA412B

ENGINE COOLANT
CO-13
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Revision: 2004 November 2004 FX35/FX45
8. Repeat steps 3 through 6 two or more times with radiator cap installed until engine coolant level no longer
drops.
9. Check cooling system for leaks with engine running.
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 step 3 through 6 until engine coolant level no
longer drops.

Clean excess engine coolant from engine.
FLUSHING COOLING SYSTEM
1. Fill radiator with water until water spills from the air relief hole, then close air relief plug. Fill radiator and
reservoir tank with water and reinstall radiator cap.
2. Run engine and warm it up to normal operating temperature.
3. Rev engine two or three times under no-load.
4. Stop engine and wait until it cools down.
5. Drain water from the system. Refer to CO-11, "
DRAINING ENGINE COOLANT" .
6. Repeat steps 1 through 5 until clear water begins to drain from radiator.

CO-14
[VQ35DE]
RADIATOR
Revision: 2004 November 2004 FX35/FX45
RADIATORPFP:21400
Removal and InstallationABS004WE
WARNING:
Never remove radiator cap when engine is hot. Serious burns could occur from high-pressure engine
coolant escaping from radiator.
REMOVAL
1. Remove front engine undercover with power tool.
2. Drain engine coolant from radiator. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:
Perform when engine is cold.
3. Remove air duct and air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
4. Remove reservoir tank and reservoir tank bracket.
5. Disconnect A/T fluid cooler hoses from radiator.

Install blind plug to avoid leakage of A/T fluid.
6. Disconnect radiator upper and lower hoses from radiator.
7. Remove radiator cooling fan assembly. Refer to CO-21, "
COOLING FAN" .
1. Radiator 2. Radiator upper mount bracket 3. Mounting rubber (upper)
4. Radiator cap 5. Mounting rubber (lower) 6. O-ring
7. Drain plug 8. Clamp (radiator hose) 9. Radiator hose (lower)
10. Radiator hose (upper) 11. Clamp (A/T fluid cooler hose) 12. A/T fluid cooler hose
13. Clamp (reservoir tank hose) 14. Reservoir tank hose 15. Reservoir tank cap
16. Reservoir tank 17. Reservoir tank bracket 18. Radiator cooling fan assembly
SBIA0446E

RADIATOR
CO-15
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Revision: 2004 November 2004 FX35/FX45
8. Rotate two radiator upper mount brackets 90 degrees in the
direction shown in the figure, and remove them.
9. Lift up and remove radiator.
CAUTION:
Do not damage or scratch air conditioner 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 (J-33984-A)] and
radiator cap tester (commercial service tool). Refer to CO-11, "
CHECKING COOLING SYSTEM FOR
LEAKS" .

Start and warm up engine. Visually make sure that there is no leaks of engine coolant and A/T fluid.
Checking Radiator CapABS008FW
1. Pull radiator cap negative-pressure valve to open it, and make
sure it close completely when released.

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

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

When connecting radiator cap to radiator cap tester adapter
(SST) and radiator cap tester (commercial service tool), apply
engine coolant to the cap seal part.

Replace radiator cap if there is an unusualness in radiator cap
negative-pressure valve, or if the open-valve pressure is out-
side of the standard values.
SBIA0447E
SBIA0448E
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-16
[VQ35DE]
RADIATOR
Revision: 2004 November 2004 FX35/FX45
Checking RadiatorABS008FX
Check radiator for mud or clogging. If necessary, clean radiator as follows.

Be careful not to bend or damage radiator fins.

When radiator is cleaned without removal, remove all surrounding parts such as cooling fan shroud and
horns. Then tape harness and 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 surfaces 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.

Use compressed air lower than 490 kPa (5 kg/cm2 , 71 psi) and keep distance more than 30 cm (11.8
in).
5. Blow air again into all the radiator core surfaces once per minute until no water sprays out.

RADIATOR (ALUMINUM TYPE)
CO-17
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Revision: 2004 November 2004 FX35/FX45
RADIATOR (ALUMINUM TYPE)PFP:21460
Disassembly and AssemblyABS004VZ
PREPARATION
1. Attach spacer to the tip of radiator plate pliers A (SST).
Spacer specification: 1.5 mm (0.059 in) thick x 18 mm (0.71 in)
wide x 8.5 mm (0.335 in) long.
2. Make sure that when radiator plate pliers A (SST) are closed
dimension H′′ is approx. 7.6 mm (0.299 in).
3. Adjust dimension H′′ with spacer, if necessary.
DISASSEMBLY
1. Remove upper or lower tanks with radiator plate pliers B (SST).
1. Upper tank 2. Sealing rubber 3. Core
4. Lower tank 5. Conical washer 6. Washer
7. O-ring 8. A/T fluid cooler
SBIA0449E
SLC655CB
SLC903-A

CO-18
[VQ35DE]
RADIATOR (ALUMINUM TYPE)
Revision: 2004 November 2004 FX35/FX45

Grip the crimped edge and bend it upwards so that radiator
plate pliers B slips off.
Do not bend excessively.

In areas where radiator plate pliers B cannot be used, use a
screwdriver to bend the edge up.
Be careful not to damage tank.
2. Remove sealing rubber.
3. Make sure the edge stands straight up.
4. Remove A/T fluid cooler from lower tank.
ASSEMBLY
1. Install A/T fluid cooler.
Pay attention to direction of conical washer.
SLC893
SLC930
SLC931
SBIA0577E

RADIATOR (ALUMINUM TYPE)
CO-19
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Revision: 2004 November 2004 FX35/FX45
2. Clean contact portion of tank.
3. Install sealing rubber.
Push it in with fingers.
Be careful not to twist sealing rubber.
4. Caulk tank in specified sequence with radiator plate pliers A
(SST).
SLC932
SLC917A
SLC904-A
SLC896

CO-20
[VQ35DE]
RADIATOR (ALUMINUM TYPE)
Revision: 2004 November 2004 FX35/FX45

Use pliers in the locations where plate pliers A cannot be
used.
5. Make sure that the rim is completely crimped down.
6. Confirm that there is no leakage.
Refer to CO-20, "
INSPECTION" .
INSPECTION
1. Apply pressure with radiator cap tester adapter (SST) and radia-
tor cap tester (commercial service 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 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)
SLC933-A
SLC934