Infiniti FX35 / FX45. Manual - part 277

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[VK45DE]

ENGINE COOLANT

4.

Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to "FLUSHING COOLING SYSTEM".

REFILLING ENGINE COOLANT

1.

Install reservoir tank, and radiator drain plug.

CAUTION:

Be sure to clean radiator drain plug and install with new O-ring.

If water drain plugs on cylinder block are removed, close and tighten them. Refer to 

EM-242, "Dis-

assembly and Assembly"

.

2.

Make sure that each hose clamp has been firmly tightened.

3.

Remove air relief plug on heater hose.

4.

Fill thermostat housing and reservoir tank to specified level.
• Refill engine coolant up to filler neck of thermostat housing.
• Pour engine coolant through engine coolant filler neck slowly of less than 2   (2-1/8 US qt, 1-3/4

Imp 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-9, "Fluids and Lubricants"

.

• When engine coolant overflows air relief hole on heater hose,

install air relief plug.

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 engine and cool down to less than approximately 50

°

C (122

°

F).

• Cool down using a fan to reduce the time.
• If necessary, refill engine coolant up to filler neck of thermostat housing.

Radiator drain plug:

 : 1.19 N·m (0.12 kg-m, 11 in-lb)

PBIC1530E

Engine coolant capacity 
(With reservoir tank at “MAX” level):

Approx. 10.0   (10-5/8 US qt, 8-3/4 Imp qt)

Reservoir tank engine coolant capacity
(At “MAX” level):

0.8   (7/8 US qt, 3/4 lmp qt)

SMA412B

ENGINE COOLANT

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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 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 steps 4 through 7 until engine coolant level

no longer drops.   

FLUSHING COOLING SYSTEM

1.

Install reservoir tank, 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-242, "Dis-

assembly and Assembly"

.

2.

Remove air relief plug on heater hose.

3.

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. 

4.

Run engine and warm it up to normal operating temperature.

5.

Rev engine two or three times under no-load.

6.

Stop engine and wait until it cools down.

7.

Drain water from the system. Refer to "DRAINING ENGINE COOLANT".

8.

Repeat steps 1 through 7 until clear water begins to drain from radiator.

Radiator drain plug:

 : 1.19 N·m (0.12 kg-m, 11 in-lb)

PBIC1530E

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RADIATOR

RADIATOR

Component

INFOID:0000000001325871

Removal and Installation

INFOID:0000000001325872

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 radiator 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 engine cover with power tool. Refer to 

EM-169, "Component"

.

2.

Remove engine front undercover with power tool.

3.

Drain engine coolant from radiator. Refer to 

CO-37, "Changing Engine Coolant"

.

CAUTION:

Perform this step when engine is cold.

4.

Remove air duct (inlet), air cleaner case and mass air flow sensor assembly. Refer to 

EM-173, "Compo-

nent"

.

5.

Remove radiator hoses (upper and lower).

CAUTION:

Do not spill engine coolant on drive belts.

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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6.

Disconnect A/T fluid cooler hoses. 
• Install blind plug to avoid leakage of A/T fluid.

7.

Remove radiator shroud (lower).
• While pressing left and right pawls in direction indicated by

arrows, pull radiator shroud (lower) rearwards to remove.

8.

Lift up and remove radiator shroud. 

9.

Remove washer tank mounting bolts.

10. Rotate two radiator upper mount brackets 90 degrees in the

direction as shown in the figure, and remove them.

PBIC1532E

PBIC1535E

PBIC1534E

PBIC1533E