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![INFINITI FX35 2005 Service Manual CO-12
[VQ35DE]
ENGINE COOLANT
Revision: 2005 July 2005 FX
4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. INFINITI FX35 2005 Service Manual CO-12
[VQ35DE]
ENGINE COOLANT
Revision: 2005 July 2005 FX
4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system.](/manual-img/42/57020/w960_57020-1216.png)
CO-12
[VQ35DE]
ENGINE COOLANT
Revision: 2005 July 2005 FX
4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to CO-13, "
FLUSHING COOLING SYSTEM" .
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 on cylinder block are removed, close and tighten them. Refer to EM-128,
"ASSEMBLY" .
2. Make sure that each hose clamp has been firmly tightened.
3. Remove air relief plug on heater hose.
4. Fill radiator, and reservoir tank if removed, to specified level.
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.
Use Genuine Nissan Long Life Antifreeze/Coolant or
equivalent mixed with water (distilled or demineralized).
Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRI-
CANTS" .
When engine coolant overflows air relief hole on heater hose,
install air relief plug with new O-ring.
5. Install radiator cap.
6. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000 rpm.
Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.
7. Stop the engine and cool down to less than approximately 50 °C (122 °F).
Cool down using fan to reduce the time. 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, 11 in-lb)
SMA412B
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If necessary, refill radiator up to filler neck with engine coolant.
8. Refill reservoir tank to “ INFINITI FX35 2005 Service Manual ENGINE COOLANT CO-13
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If necessary, refill radiator up to filler neck with engine coolant.
8. Refill reservoir tank to “](/manual-img/42/57020/w960_57020-1217.png)
ENGINE COOLANT CO-13
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If necessary, refill radiator up to filler neck with engine coolant.
8. Refill reservoir tank to “MAX” level line with engine coolant.
9. Repeat steps 4 through 7 two or more times with radiator cap installed until engine coolant level no longer drops.
10. Check cooling system for leaks with engine running.
11. Warm up the 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.
12. Repeat step 11 three times.
13. If sound is heard, bleed air from cooling system by repeating step 4 through 7 until engine coolant level no longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank if removed, and radiator drain plug.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to EM-128,
"ASSEMBLY" .
2. Remove air relief plug on heater hose.
3. 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.
4. Run the engine and warm it up to normal operating temperature.
5. Rev the engine two or three times under no-load.
6. Stop the engine and wait until it cools down.
7. Drain water from the system. Refer to CO-11, "
DRAINING ENGINE COOLANT" .
8. Repeat steps 1 through 7 until clear water begins to drain from radiator. Radiator drain plug:
: 1.18 N·m (0.12 kg-m, 10 in-lb)
SBIA0445E
Air relief plug: : 1.19 N·m (0.12 kg-m, 11 in-lb)
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![INFINITI FX35 2005 Service Manual CO-14
[VQ35DE]
RADIATOR
Revision: 2005 July 2005 FX
RADIATORPFP:21400
ComponentsABS00E7X
Removal and InstallationABS004WE
REMOVAL
WARNING:
Do not remove radiator cap when engine is hot. Serious burns INFINITI FX35 2005 Service Manual CO-14
[VQ35DE]
RADIATOR
Revision: 2005 July 2005 FX
RADIATORPFP:21400
ComponentsABS00E7X
Removal and InstallationABS004WE
REMOVAL
WARNING:
Do not remove radiator cap when engine is hot. Serious burns](/manual-img/42/57020/w960_57020-1218.png)
CO-14
[VQ35DE]
RADIATOR
Revision: 2005 July 2005 FX
RADIATORPFP:21400
ComponentsABS00E7X
Removal and InstallationABS004WE
REMOVAL
WARNING:
Do not remove radiator cap when engine is hot. Serious burns could occur from high-pressure engine
coolant escaping from radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter of a turn to
release built-up pressure. Carefully remove radiator cap by turning it all the way.
1. Remove front engine undercover with power tool.
2. Drain engine coolant from radiator. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine coolant on drive belts.
3. Remove air duct (inlet) 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.
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
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Install blind plug to avoid leakage of A/T fluid.
6. Removal radiator hoses (upper and lower) and reservoi INFINITI FX35 2005 Service Manual RADIATOR CO-15
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Install blind plug to avoid leakage of A/T fluid.
6. Removal radiator hoses (upper and lower) and reservoi](/manual-img/42/57020/w960_57020-1219.png)
RADIATOR CO-15
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Install blind plug to avoid leakage of A/T fluid.
6. Removal radiator hoses (upper and lower) and reservoir tank hose. CAUTION:
Be careful not to allow engine coolant to contact drive belts.
7. Remove radiator cooling fan assembly. Refer to CO-21, "
COOLING FAN" .
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 A/C condenser and radiator core
when removing.
INSTALLATION
Installation is the reverse order of removal.
INSPECTION AFTER INSTALLATION
Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301 (J33984-A)]
and the radiator cap tester (commercial service tool). Refer to CO-11, "
LEAK CHECK" .
Start and warm up the engine. Visually make sure that there is no leaks of engine coolant and A/T fluid.
Checking Radiator CapABS008FW
Check valve seat of radiator cap.
–Check if valve seat is swollen to the extent that the edge of the
plunger cannot be seen when watching it vertically from the top.
–Check if valve seat has no soil and damage.
SBIA0447E
SBIA0448E
PBIC2816E
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![INFINITI FX35 2005 Service Manual CO-16
[VQ35DE]
RADIATOR
Revision: 2005 July 2005 FX
Pull negative-pressure valve to open it, and make sure that it
close completely when released.
–Make sure that there is no dirt or damage on the INFINITI FX35 2005 Service Manual CO-16
[VQ35DE]
RADIATOR
Revision: 2005 July 2005 FX
Pull negative-pressure valve to open it, and make sure that it
close completely when released.
–Make sure that there is no dirt or damage on the](/manual-img/42/57020/w960_57020-1220.png)
CO-16
[VQ35DE]
RADIATOR
Revision: 2005 July 2005 FX
Pull negative-pressure valve to open it, and make sure that it
close 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.
Check radiator cap relief pressure.
–When connecting radiator cap to the radiator cap tester (com-
mercial service tool) and the radiator cap tester adapter [SST],
apply engine coolant to the cap seal surface.
Replace radiator cap if there is an unusualness related to the above three.
CAUTION:
When installing radiator cap, thoroughly wipe out the radiator filler neck to remove any waxy residue
or foreign material.
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 radiator cooling fan
assembly 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 (11.81
in).
5. Blow air again into all the radiator core surfaces once per minute until no water sprays out.
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
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RADIATOR (ALUMINUM TYPE) CO-17
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RADIATOR (ALUMINUM TYPE)PFP:21460
ComponentsABS00E7Y
Disassembly and AssemblyABS004VZ
PREPARATION
1. Attach spacer to tip of the radiator plate pliers A [SST].
Spacer specification: 18 mm (0.71 in) wide × 8.5 mm (0.335 in)
long × 1.5 mm (0.059 in) thick.
2. Make sure that when the radiator plate pliers A [SST: KV99103510 ( — )] are closed dimension H ′′ is
approx. 7.6 mm (0.299 in).
3. Adjust dimension H ′′ with spacer, if necessary.
DISASSEMBLY
1. Remove upper and lower tanks with the radiator plate pliers B
[SST].
CAUTION:
Do not disassemble lower tank and A/T fluid cooler.
NOTE:
Regard lower tank and A/T fluid cooler as an assembly.
1. Upper tank 2. Sealing rubber 3. Core
4. Lower tank (with A/T fluid cooler)
PBIC2539E
SLC655CB
SLC903-A
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CO-18
[VQ35DE]
RADIATOR (ALUMINUM TYPE)
Revision: 2005 July 2005 FX
Grip the crimped edge and bend it upwards so that the radia-
tor plate pliers B slips off.
CAUTION:
Do not bend excessively.
In areas where the radiator plate pliers B cannot be used, use
a screwdriver to bend the edge up.
CAUTION:
Be careful not to damage tank.
2. Remove sealing rubber.
3. Make sure the edge stands straight up.
ASSEMBLY
1. Clean contact portion of tank.
SLC893
SLC930
SLC931
SLC932
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RADIATOR (ALUMINUM TYPE) CO-19
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2. Install new sealing rubber while pushing it with fingers.
CAUTION:
Be careful not to twist sealing rubber.
3. Caulk tank in numerical order as shown in the figure with the radiator plate pliers A [SST].
Use pliers in the locations where the radiator plate pliers A
cannot be used.
SLC917A
SLC904-A
PBIC2076E
SLC897