Infiniti M35/M45 Y50. Manual - part 351

RADIATOR

CO-45

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

CO

INSPECTION AFTER INSTALLATION

●

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

NBS004RI

●

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
(commercial service tool) (B) and the radiator cap tester (com-
mercial service tool) (A), 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 Radiator

NBS004RJ

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.

3.

Stop washing if any stains no longer flow out from radiator.

4.

Blow air into the back side of radiator core vertically downward.

PBIC2816E

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)

PBIC5122J

CO-46

[VK45DE]

RADIATOR

●

Use compressed air lower than 490 kPa (5 kg/cm

2

 , 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.

RADIATOR (ALUMINUM TYPE)

CO-47

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

CO

RADIATOR (ALUMINUM TYPE)

PFP:21460

Components

NBS004RK

Disassembly and Assembly

NBS004RL

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 [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 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

CO-48

[VK45DE]

RADIATOR (ALUMINUM TYPE)

●

Grip the crimped edge and bend it upwards so that radiator
plate pliers B [SST: KV99103520 (

—

)] slips off.

CAUTION:

Do not bend excessively.

●

In areas where radiator plate pliers B [SST: KV99103520
(

—

)] 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