Infiniti M45 (Y34). Manual - part 286

RADIATOR (ALUMINUM TYPE)

CO-17

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2.

Install sealing rubber.

CAUTION:

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Push it in with fingers.

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Be careful not to twist sealing rubber.

3.

Caulk upper and lower tanks in numerical order as shown in the
figure with radiator plate pliers A (SST).

●

Use pliers in the locations where the radiator plate pliers A
[SST: KV99103510 (–)] cannot be used.

SLC917A

SLC904-A

SLC896

SLC897

CO-18

RADIATOR (ALUMINUM TYPE)

4.

Make sure that the rim is completely crimped down.

5.

Confirm that there is no leakage. Refer to 

CO-18, "INSPEC-

TION"

 .

INSPECTION

1.

Apply pressure with the radiator cap tester adapter (SST) and
the radiator cap tester (commercial service tool).

●

provide used radiator and connect it to tested radiator using
radiator hoses as shown in the figure.

NOTE:
The used radiator should be tested beforehand to confirm it
has no leakage. if used one is not available, it is possible to
use new service part as a radiator testing 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 oil cooler to seal its inlet and outlet.

2.

Check for leakage by soaking radiator in the water container
with the testing pressure applied.

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)

PBIC1658E

PBIC1699E

COOLING FAN

CO-19

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COOLING FAN

PFP:21140

Removal and Installation

ABS004R8

REMOVAL

1.

Remove air duct and air cleaner case. Refer to 

EM-16, "Removal and Installation"

 .

2.

Remove engine undercover with power tool.

3.

Drain engine coolant from radiator. Refer to 

CO-9, "Changing Engine Coolant"

 .

1.

Cooling fan pump (with water pump)
(Do not disassemble.)

2.

O-ring

3.

Fluid hose

4.

Fluid hose

5.

Cooling fan motor
(Do not disassemble.)

6.

Cooling fan shroud

7.

Fan

8.

Cooling fan fluid cooler

9.

Clip

10.

Fluid hose

11.

Fluid hose

12.

Reservoir tank

PBIC2567E

CO-20

COOLING FAN

CAUTION:

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Perform when engine is cold.

●

Never remove radiator cap when engine is hot. Serious burns could occur from high pressure
fluid escaping from radiator.

4.

Disconnect radiator hoses (upper/lower).

5.

Remove the following parts from fan shroud: engine coolant temperature sensor harness, engine coolant
reservoir tank hose, A/T oil cooler hose, mounting bolts for the cooling fan fluid hose bracket.

6.

Drain the cooling fan fluid. 

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Because there is no drain plug on reservoir tank or piping, drain the fluid from reservoir tank oil inlet and
pipe division points.

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Prepare a container with a volume of approximately 1  (2-1/8 US pt, 1-3/4 Imp pt) to drain the fluid into.

7.

Remove cooling fan fluid reservoir tank.

8.

Disconnect the hoses between cooling fan motor and cooling fan pump (joined with the water pump), and
the hose between cooling fan motor and cooling fan fluid cooler. 

●

Fluid will leak, so have shop cloths ready.

9.

Remove cooling fan shroud mounting bolts. 

10. Remove radiator mounting bracket. With radiator moved toward the vehicle front, lift up and remove cool-

ing fan.

CAUTION:

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Be careful not to scratch or damage radiator core.

●

When removing cooling fan pump, remove it together with water pump. (They can not be sepa-
rated.) Refer to 

CO-22, "Removal and Installation"

 .

●

When removing cooling fan fluid cooler, be careful not to scratch or damage air conditioner
condenser core.

INSPECTION AFTER REMOVAL

●

Turning oil cooling fan motor shaft by hands check if it rotates smoothly without looseness.

●

Check visually for fluid leakage from cooling fan motor.

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For water pump inspection, refer to 

CO-22, "WATER PUMP"

 .

INSTALLATION

Install in the reverse order of removal referring the following.

●

For bleeding the air from the cooling system, refer to 

CO-9, "REFILLING ENGINE COOLANT"

 .

Attaching the fluid pipe fixing clip
If fluid pipe fixing clip has been removed from the installation holes, it must be replaced with a new clip.
Adding cooling fan fluid and bleeding air
The procedure below is for adding cooling fan fluid and bleeding air from the piping.

CAUTION:

●

Do not reuse the used fluid which was drained out.

●

Use genuine Nissan PSF or equivalent. Refer to 

MA-10, "RECOMMENDED FLUIDS AND LUBRI-

CANTS"

 . 

NOTE:
The total fluid volume is 777 ml (26.3 US floz, 27.4 Imp floz) (with the cold maximum on level gauge when
engine is cold).

1.

Add fluid to reservoir tank until the fluid reaches the upper limit of the “HOT” level on level gauge.
For the fluid level, refer to 

CO-21, "INSPECTION AFTER INSTALLATION"

 .

2.

Start engine.

3.

Run engine at idle speed for a few minutes. Then check the fluid level. If the level has decreased, add
fluid. 

CAUTION:

●

Be careful not to touch the fan while it is rotating.

●

Be sure to add the fluid as necessary. If the fluid runs out in reservoir tank, air will be taken in.

NOTE:

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With engine operating, reservoir tank cap can be removed to check the fluid level.