2007 INFINITI M35 radiator install

CO-32
[VQ35DE]
WATER OUTLET AND WATER PIPING
Revision: 2007 April2007 M35/M45
9. Remove heater pipe, water bypass hoses and water pipe.
INSTALLATION
Note the following, and install in the reverse order of removal.

Securely insert each hose, and install clamp at a position where it does not interfere with the pipe bulge.

When inserting water pipe into water outlet, apply neutral detergent to O-ring.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using the radiator cap tester adapter (commercial service tool) 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.

PREPARATION
CO-35
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Revision: 2007 April2007 M35/M45
PREPARATIONPFP:00002
Special Service ToolsNBS004R9
The actual shapes of Kent-Moore tools may from those of special service tools illustrated here.
Commercial Service ToolsNBS004RA
Tool number
(Kent-Moore No.)
Tool nameDescription
KV99103510
(—)
Radiator plate pliers AInstalling radiator upper and lower tanks
KV99103520
(—)
Radiator plate pliers BRemoving radiator upper and lower tanks
S-NT224
S-NT225
Tool nameDescription
Power toolLoosening nuts and bolts
Radiator cap tester Checking radiator and radiator cap
Radiator cap tester adapter Adapting radiator cap tester to radiator cap
and thermostat housing filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
PBIC0190E
PBIC1982E
S-NT564

OVERHEATING CAUSE ANALYSIS
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Revision: 2007 April2007 M35/M45
Except cool-
ing system
parts mal-
function— Overload on engineAbusive drivingHigh engine rpm under no
load
Driving in low gear for
extended time
Driving at extremely high
speed
Powertrain system mal-
function
— Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flowBlocked bumper —
— Blocked radiator grilleInstalled car brassiere
Mud contamination or
paper clogging
Blocked radiator —
Blocked condenser
Blocked air flow
Installed large fog lamp Symptom Check items

CO-40
[VK45DE]
ENGINE COOLANT
Revision: 2007 April2007 M35/M45
ENGINE COOLANTPFP:KQ100
InspectionNBS004RE
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.
LEAK CHECK

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

If anything is found, repair or replace damaged parts.
Changing Engine CoolantNBS004RF
WARNING:

To avoid being scalded, do not change engine coolant when engine is hot.

Wrap a thick cloth around radiator cap and carefully remove radiator cap. First, turn radiator cap a
quarter of a turn to release built-up pressure. Then turn radiator cap all the way.
DRAINING ENGINE COOLANT
1. Remove engine room cover (RH and LH). Refer to EM-173, "ENGINE ROOM COVER" .
2. Remove engine cover with power tool. Refer to EM-179, "
INTAKE MANIFOLD" .
3. Open radiator drain plug at the bottom of radiator, and then
remove radiator cap.
When draining all of engine coolant in the system, open
water drain plugs on cylinder block. Refer to EM-253, "
DIS-
ASSEMBLY" .
4. Remove reservoir tank as necessary, and drain engine coolant
and clean reservoir tank before installing.
5. Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated,
flush the engine cooling system. Refer to CO-42, "
FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed, and radiator drain plug.
SMA412B
Testing pressure: 157 kPa (1.6 kg/cm2 , 23 psi)
PBIC5121J
1 : Radiator drain plug hole
2 : Front engine undercover
: Engine front
PBIC3395E

ENGINE COOLANT
CO-41
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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-257,
"ASSEMBLY" .
2. Make sure that each hose clamp has been firmly tightened.
3. Remove air relief plug (1) 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-12, "
RECOMMENDED 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.
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.Radiator drain plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
: Engine front
PBIC3394E
Engine coolant capacity
(With reservoir tank at “MAX” level):
Approx. 10.4 (11 US qt, 9-1/8 Imp qt)
Reservoir tank engine coolant capacity
(At “MAX” level):
0.8 (7/8 US qt, 3/4 lmp qt)
Air relief plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
SMA412B

CO-42
[VK45DE]
ENGINE COOLANT
Revision: 2007 April2007 M35/M45
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-257,
"ASSEMBLY" .
2. Remove air relief plug (1) 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 CO-40, "
DRAINING ENGINE COOLANT" .
8. Repeat steps 1 through 7 until clear water begins to drain from radiator.Radiator drain plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
: Engine front
PBIC3394E
Air relief plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)

RADIATOR
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Revision: 2007 April2007 M35/M45
RADIATORPFP:21400
ComponentsNBS004RG

Refer to GI-11, "Components" for symbols in the figure.
Removal and InstallationNBS004RH
WARNING:
Do not remove radiator cap when engine is hot. Serious burns could occur from high-pressure engine
coolant escaping from thermostat housing. 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.
REMOVAL
1. Remove the following parts:

Front engine undercover (power tool).

Engine room cover (RH and LH). Refer to EM-173, "ENGINE ROOM COVER" .

Air duct (inlet) and air cleaner case assembly. Refer to EM-177, "AIR CLEANER AND AIR DUCT" .
2. Remove front grille and front grille support. Refer to EI-16, "
FRONT GRILLE" .
3. Drain engine coolant from radiator. Refer to CO-40, "
ENGINE COOLANT" .
1. Reservoir tank cap 2. Reservoir tank 3. Reservoir tank bracket
4. Reservoir tank hose 5. Radiator hose (upper) 6. Air guide
7. Mount bracket (RH) 8. Mounting rubber (upper) 9. A/C condenser
10. Mount bracket (LH) 11. Radiator 12. Mounting rubber (lower)
13. A/T fluid cooler hose 14. A/T fluid cooler hose 15. O-ring
16. Drain plug 17. Radiator hose (lower) 18. Cooling fan assembly
A. To thermostat housing B. To water suction pipe C. To transmission
PBIC4718E

CO-44
[VK45DE]
RADIATOR
Revision: 2007 April2007 M35/M45
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belts.
4. Remove the A/C piping bracket from left side member, and then move the A/C piping out of the way.
5. Disconnect A/T fluid cooler hoses from radiator.

Install blind plug to avoid leakage of A/T fluid.
6. Remove radiator hoses (upper and lower) and reservoir tank hose.
CAUTION:
Be careful not to allow engine coolant to contact drive belts.
7. Remove cooling fan assembly (1). Refer to CO-51, "
COOLING
FA N" .
CAUTION:
Do not damage or scratch radiator core when removing.
8. Remove radiator as follows:
a. Remove mount bracket (RH and LH).
b. Pull the radiator (1) rearward from the vehicle, and then remove
the mounting bolts (3) and A/C condenser (2).
NOTE:
Figure shows right side.
c. Lift up and pull the radiator (4) rearward, and then remove the
mounting rubber (lower) (3) from the radiator core support (2).
CAUTION:
At this time, A/C condenser is on the lower end of radiator
front surface. Minimize the movement to the rear side.
d. Lift up the A/C condenser to disengage the lower end of front surface, and then remove the radiator.
CAUTION:

Be careful not to damage radiator and A/C condenser core.

Minimize the lift of A/C condenser to prevent load from being applied to A/C piping.
e. After removing the radiator, place the A/C condenser on the radiator core support to prevent load from
being applied to piping. And then, temporarily secure them using a rope to prevent them from being
dropped.
INSTALLATION
Installation is the reverse order of removal.
KBIA3587J
KBIA3586J
1 : A/C condenser
: Engine front
PBIC3389E