Nissan Pathfinder (2010 year). Instruction — part 127

CO-14

< ON-VEHICLE MAINTENANCE >

[VQ40DE]

ENGINE COOLANT

2. Set the vehicle heater controls to the full HOT and heater ON position. Turn the vehicle ignition ON with

the engine OFF as necessary to activate the heater mode.

3. Remove the vented reservoir cap and replace it with a non-vented reservoir cap before filling the cooling

system.

4. Install the Tool by installing the radiator cap adapter onto the

radiator neck opening. Then attach the gauge body assembly

with the refill tube and the venturi assembly to the radiator cap

adapter.

5. Insert the refill hose into the coolant mixture container that is

placed at floor level. Make sure the ball valve is in the closed

position.

• Use recommended coolant or equivalent.

Refer to

MA-16, "For North America"

6. Install an air hose to the venturi assembly, the air pressure must

be within specification.

CAUTION:

The compressed air supply must be equipped with an air

dryer.

7. The vacuum gauge will begin to rise and there will be an audible hissing noise. During this process open

the ball valve on the refill hose slightly. Coolant will be visible rising in the refill hose. Once the refill hose is

full of coolant, close the ball valve. This will purge any air trapped in the refill hose.

8. Continue to draw the vacuum until the gauge reaches 28 inches

of vacuum. The gauge may not reach 28 inches in high altitude

locations, use the vacuum specifications based on the altitude

above sea level.

9. When the vacuum gauge has reached the specified amount, disconnect the air hose and wait 20 seconds

to see if the system loses any vacuum. If the vacuum level drops, perform any necessary repairs to the

system and repeat steps 6 - 8 to bring the vacuum to the specified amount. Recheck for any leaks.

10. Place the coolant container (with the refill hose inserted) at the same level as the top of the radiator. Then

open the ball valve on the refill hose so the coolant will be drawn up to fill the cooling system. The cooling

system is full when the vacuum gauge reads zero.

CAUTION:

Do not allow the coolant container to get too low when filling, to avoid air from being drawn into

the cooling system.

Yes

Refer to

EM-102, "Disassembly and Assembly"

Plug

Yes

Refer to

EM-102, "Disassembly and Assembly"

Block heater

Refer to

EM-102, "Disassembly and Assembly"

Part

Washer

Tightening Torque

Tool number

: KV991J0070 (J-45695)

Cooling system capacity
(with reservoir)

: Refer to

MA-16, "For

North America"

Compressed air
supply pressure

: 549 - 824 kPa (5.6 - 8.4 kg/cm

80 - 119 psi)

LLIA0058E

Altitude above sea level

Vacuum gauge reading

0 - 100 m (328 ft)

: 28 inches of vacuum

300 m (984 ft)

: 27 inches of vacuum

500 m (1,641 ft)

: 26 inches of vacuum

1,000 m (3,281 ft)

: 24 - 25 inches of vacuum

LLIA0057E

2010 Pathfinder

ENGINE COOLANT

CO-15

< ON-VEHICLE MAINTENANCE >

[VQ40DE]

11. Remove the Tool from the radiator neck opening and install the radiator cap.
12. Remove the non-vented reservoir cap.
13. Fill the cooling system reservoir tank to the specified level. Run the engine to warm up the cooling system

and top up the system as necessary before installing the vented reservoir cap.

FLUSHING COOLING SYSTEM

1. Drain the water from the engine cooling system. Refer to

CO-12, "Changing Engine Coolant"

2. Fill the radiator and the reservoir tank (to the “MAX” line), with water. Reinstall the radiator cap and leave

the vented reservoir cap off.

3. Run the engine until it reaches normal operating temperature.
4. Press the engine accelerator two or three times under no-load.
5. Stop the engine and wait until it cools down.
6. Drain the water from the engine cooling system. Refer to

CO-12, "Changing Engine Coolant"

7. Repeat steps 2 through 6 until clear water begins to drain from the radiator.

2010 Pathfinder

CO-16

< ON-VEHICLE REPAIR >

[VQ40DE]

RADIATOR

ON-VEHICLE REPAIR

RADIATOR

Exploded View

INFOID:0000000005260558

Removal and Installation

INFOID:0000000005260559

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 the 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 engine under cover. Refer to

EXT-14, "Removal and Installation"

2. Drain engine coolant from radiator. Refer to

CO-11

CAUTION:

• Perform this step when engine is cold.

• Do not spill engine coolant on drive belts.

Upper mount bracket

Mounting rubber (upper)

Radiator cap

Radiator

Mounting rubber (lower)

A/T fluid cooler hose

O-ring

Drain plug

10. Cooling fan assembly

11. Radiator shroud (upper)

12. Radiator hose (lower)

13. Radiator shroud (lower)

14. Reservoir tank hose

15. Reservoir tank cap

16. Reservoir tank

17. Water hose

18. Radiator hose (upper)

To heater return tube

To water pipe

To A/T cooler tube

To water inlet and thermostat assembly

Vehicle front

PBIC3861E

2010 Pathfinder

RADIATOR

CO-17

< ON-VEHICLE REPAIR >

[VQ40DE]

3. Remove engine room cover. Refer to

EM-25, "Removal and Installation"

4. Remove air duct and resonator assembly and air cleaner case (upper). Refer to

EM-26, "Removal and

Installation"

5. Remove reservoir tank hose.
6. Remove radiator hoses (upper and lower).

CAUTION:

Be careful not to allow engine coolant to contact drive belts.

7. Disconnect A/T fluid cooler hoses.

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

8. Remove radiator shroud (lower).
9. Remove radiator shroud (upper).
10. Remove engine cooling fan (Motor driven type). Refer to

CO-20, "Removal and Installation (Motor driven

type)"

11. Remove front grille. Refer to

EXT-18, "Removal and Installation"

12. Remove the upper mount bracket bolts.

13. Remove the two A/C condenser bolts.

14. Remove radiator as follows:

CAUTION:

Do not damage or scratch A/C condenser and radiator core when removing.

a. With lifting and pulling radiator in a rear direction, disassemble

mounting rubber (lower) from radiator core support center.

CAUTION:

Because A/C condenser is attached to the front-lower por-

tion of radiator, moving it in the rear direction should be at a

minimum.

LBIA0419E

LBIA0421E

PBIC1936E

2010 Pathfinder

CO-18

< ON-VEHICLE REPAIR >

[VQ40DE]

RADIATOR

b. Lift A/C condenser up and remove radiator after disengaging the

fitting at front-bottom surface.

CAUTION:

Lifting A/C condenser should be minimum to prevent a load

to A/C piping.

After removing radiator, put A/C condenser on radiator core sup-

port center to prevent a load to A/C piping, and temporarily fix it

with rope or similar means.

INSTALLATION

Installation is in the reverse order of removal.

INSPECTION AFTER INSTALLATION

• Check for leaks of engine coolant. Refer to

CO-11, "System Inspection"

• Start and warm up engine. Visually check there are no leaks of engine coolant and A/T fluid.

Checking Radiator

INFOID:0000000005260560

Check radiator for mud or clogging. If necessary, clean radiator as follows.

CAUTION:

• Be careful not to bend or damage the radiator fins.

• When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radia-

tor shroud and horns. Then tape the harness and electrical connectors to prevent water from enter-

ing.

1. Apply water by hose to the back side of the radiator core vertically downward.
2. Apply water again to all radiator core surfaces.
3. Stop washing when dirt and debris no longer flow out from the radiator.
4. Blow air into the back side of radiator core vertically downward.

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

, 71 psi) and keep distance more than 30 cm (11.8 in).

5. Blow air again into all the radiator core surfaces until no water sprays out.
6. Check for leaks.

PBIC1054E

2010 Pathfinder

ENGINE COOLING FAN

CO-19

< ON-VEHICLE REPAIR >

[VQ40DE]

ENGINE COOLING FAN

Exploded View

INFOID:0000000005260561

Crankshaft Driven Type

Removal and Installation (Crankshaft driven type)

INFOID:0000000005260562

REMOVAL

1. Remove engine front undercover. Refer to

EXT-14, "Removal and Installation"

2. Partially drain engine coolant from radiator. Refer to

CO-11

CAUTION:

• Perform this step when engine is cold.

• Do not spill engine coolant on drive belts.

3. Remove the engine room cover. Refer to

EM-25, "Removal and Installation"

4. Remove air duct and resonator assembly. Refer to

EM-26, "Removal and Installation"

5. Remove reservoir tank hose from radiator.
6. Removal radiator hose (upper) from radiator.

CAUTION:

Do not spill engine coolant on drive belts.

7. Release the radiator shroud (lower) (2) from the radiator shroud

(upper) (1) and position aside.

• Release the tabs, pull radiator shroud (lower) (2) rearwards

and down.

8. Remove the radiator shroud (upper) bolts and remove the radiator shroud (upper). Refer to

CO-16,

"Exploded View"

9. Remove the engine cooling fan (Motor driven type). Refer to

CO-20, "Removal and Installation (Motor

driven type)"

10. Remove the drive belt. Refer to

EM-14, "Removal and Installation"

11. Remove the engine cooling fan.
12. Remove the fan coupling, if necessary.
13. Remove the cooling fan pulley, if necessary.
14. Remove the drive belt auto-tensioner, if necessary.
15. Remove the fan bracket, if necessary.

WBIA0726E

Cooling fan

Fan coupling

Fan bracket

Cooling fan pulley

ALBIA0470ZZ

2010 Pathfinder

CO-20

< ON-VEHICLE REPAIR >

[VQ40DE]

ENGINE COOLING FAN

INSPECTION AFTER REMOVAL

Fan Coupling

• Inspect fan coupling for oil leakage and bimetal conditions.

• If there are any unusual concerns, replace the fan coupling.

Fan Bracket

• Visually check that there is no significant looseness in the fan

bracket shaft, and that it turns smoothly by hand.

• If there are any unusual concerns, replace the fan bracket assem-

bly.

INSTALLATION

Installation is in the reverse order of removal.

• Install cooling fan with its front mark “F” facing front of engine. Refer to

CO-19, "Removal and Installation

(Crankshaft driven type)"

INSPECTION AFTER INSTALLATION

• Check for leaks of the engine coolant. Refer to

CO-11, "System Inspection"

• Start and warm up the engine. Visually make sure that there are no leaks of the engine coolant.

Removal and Installation (Motor driven type)

INFOID:0000000005260563

REMOVAL

1. Remove the engine under cover. Refer to

EXT-14, "Removal and Installation"

2. Partially drain engine coolant from radiator. Refer to

CO-12, "Changing Engine Coolant"

CAUTION:

• Perform this step when engine is cold.

• Do not spill engine coolant on drive belts.

3. Release the radiator shroud (lower) (2) from the radiator shroud

(upper) (1) and position aside.

• Release the tabs, pull radiator shroud (lower) (2) rearwards

and down.

4. Remove engine room cover. Refer to

EM-25, "Removal and Installation"

5. Remove air duct and resonator assembly. Refer to

EM-26, "Removal and Installation"

SLC072

LBIA0422E

ALBIA0470ZZ

2010 Pathfinder

ENGINE COOLING FAN

CO-21

< ON-VEHICLE REPAIR >

[VQ40DE]

6. Remove upper radiator hose from radiator.
7. Remove reservoir tank hose from radiator shroud (upper) and radiator.
8. Remove the radiator shroud (upper) bolts and remove the radiator shroud (upper). Refer to

CO-16,

"Exploded View"

9. Disconnect harness connector from fan motor.
10. Remove the bolt and remove the fan grille and motor assembly.

INSTALLATION

Installation is in the reverse order of removal.

• Cooling fan is controlled by ECM. For details, refer to

EC-318, "Diagnosis Procedure"

AWBIA0148ZZ

2010 Pathfinder

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