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![INFINITI M35 2006 Factory Service Manual CO-42
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ENGINE COOLANT
Revision: 2006 January2006 M35/M45
If necessary, refill engine coolant up to filler neck of thermostat housing.
8. Refill reservoir tank to “MAX” level line with engi INFINITI M35 2006 Factory Service Manual CO-42
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ENGINE COOLANT
Revision: 2006 January2006 M35/M45
If necessary, refill engine coolant up to filler neck of thermostat housing.
8. Refill reservoir tank to “MAX” level line with engi](/manual-img/42/57023/w960_57023-1416.png)
CO-42
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ENGINE COOLANT
Revision: 2006 January2006 M35/M45
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.
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-254,
"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 Nꞏm (0.12 kg-m, 11 in-lb)
: Engine front
PBIC3394E
Air relief plug:
: 1.2 Nꞏm (0.12 kg-m, 11 in-lb)
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![INFINITI M35 2006 Factory Service Manual RADIATOR
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RADIATORPFP:21400
ComponentsNBS004RG
Refer to GI-11, "Components" for symbol marks in the figure.
Removal INFINITI M35 2006 Factory Service Manual RADIATOR
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ComponentsNBS004RG
Refer to GI-11, "Components" for symbol marks in the figure.
Removal](/manual-img/42/57023/w960_57023-1417.png)
RADIATOR
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RADIATORPFP:21400
ComponentsNBS004RG
Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS004RH
WAR NING :
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
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![INFINITI M35 2006 Factory Service Manual CO-44
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RADIATOR
Revision: 2006 January2006 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 si INFINITI M35 2006 Factory Service Manual CO-44
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RADIATOR
Revision: 2006 January2006 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 si](/manual-img/42/57023/w960_57023-1418.png)
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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 radia-
tor 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.
KBIA3587J
KBIA3586J
1 : A/C condenser
: Engine front
PBIC3389E
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INSTALLATION
Installation is the reverse order of removal.
INSPECTION AFTER INSTALLATION
Check for leaks of eng INFINITI M35 2006 Factory Service Manual RADIATOR
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INSTALLATION
Installation is the reverse order of removal.
INSPECTION AFTER INSTALLATION
Check for leaks of eng](/manual-img/42/57023/w960_57023-1419.png)
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INSTALLATION
Installation is 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-40, "
LEAK CHECK" .
Start and warm up engine. Visually Check if there is no leaks of engine coolant and A/T fluid.
Checking Radiator CapNBS004RI
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.
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 adapter
(SST) and the radiator cap tester (Commercial service tool),
apply engine coolant to the cap seal surface.
Replace radiator cap if there is an unusualness.
CAUTION:
When installing a radiator cap, thoroughly wipe out the radiator filler neck to remove any waxy residue
or foreign material.
Checking RadiatorNBS004RJ
Check radiator for mud or clogging. If necessary, clean radiator as follows:
Be careful not to bend or damage the radiator fins.
When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator
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.
PBIC2816E
SMA967B
Standard : 78 - 98 kPa (0.8 - 1.0 kg/cm2 , 11 - 14 psi)
Limit : 59 kPa (0.6 kg/cm
2 , 9 psi)
SLC755A
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CO-46
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RADIATOR
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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.
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RADIATOR (ALUMINUM TYPE)
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RADIATOR (ALUMINUM TYPE)PFP:21460
ComponentsNBS004RK
Disassembly and AssemblyNBS004RL
PREPARATION
1. Attach spacer to tip of 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 radiator plate pliers A 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 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)
PBIC3397E
SLC655CB
SLC903-A
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CO-48
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RADIATOR (ALUMINUM TYPE)
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Grip the crimped edge and bend it upwards so that radiator
plate pliers B slips off.
CAUTION:
Do not bend excessively.
In areas where radiator plate pliers B cannot be used, use
flat-blade 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)
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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 radia-
tor plate pliers A (SST).
Use pliers in the locations where radiator plate pliers A cannot
be used.
SLC917A
SLC904-A
PBIC2076E
SLC897