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Nissan Pathfinder (2011 year). Manual - part 132

WATER PUMP

CO-27

< REMOVAL AND INSTALLATION >

[VQ40DE]

• Apply engine oil to O-rings.

• Locate O-ring with white paint mark to engine front side.

2. Hold timing chain to the side (

) and install water pump (

CAUTION:

• Do not reuse O-rings.

• Do not allow timing chain case to pinch O-rings when

installing water pump.

• Make sure that timing chain and water pump sprocket are

engaged.

• Tighten water pump bolts alternately and evenly to specifica-

tion.

3. Remove dust and foreign material completely from installation area of timing chain tensioner (primary)

and rear timing chain case.

4. Turn crankshaft pulley approximately 20

clockwise so that tim-

ing chain on the timing chain tensioner (primary) side is loose.

5. Install timing chain tensioner (primary) with its stopper pin inserted.

CAUTION:

Be careful not to drop bolts inside timing chain case.

6. Remove stopper pin.

• Make sure again that timing chain and water pump sprocket

are engaged.

7. Install chain tensioner cover and water pump cover.

PBIC2837E

PBIC1058E

PBIC0848E

PBIC2838E

2011 Pathfinder

CO-28

< REMOVAL AND INSTALLATION >

[VQ40DE]

WATER PUMP

a. Before installing, remove all traces of old liquid gasket from mat-

ing surface of water pump cover and chain tensioner cover

using scraper. Also remove traces of old liquid gasket from the

mating surface of front timing chain case.

b. Apply a continuous bead of liquid gasket, to mating surface of

chain tensioner and water pump cover, using Tool.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

CAUTION:

Attaching should be done within 5 minutes after coating.

Tighten bolts to specified torque. Refer to

EM-53, "Exploded

View"

8. Install water drain plug (front) (1) on water pump side of cylinder

block.

• Apply liquid gasket to the thread of water drain plug (front).

Use Genuine RTV Silicone Sealant or equivalent. Refer to

9. Installation of the remaining components is in the reverse order of removal.

• After installation refill engine coolant and check for leaks. Refer to

CO-13, "Changing Engine Coolant"

and

CO-11, "System Inspection"

CAUTION:

Do not spill coolant in the engine compartment. Use a shop cloth to absorb coolant.

• After starting engine, let idle for three minutes, then rev engine up to 3,000 rpm under no load to purge

air from the high-pressure chamber of the chain tensioner. The engine may produce a rattling noise.

This indicates that air still remains in the chamber and is not a matter of concern.

INSPECTION AFTER INSTALLATION

• Check for coolant leaks. Refer to

CO-11, "System Inspection"

• Start and warm up engine. Visually check for coolant leaks. Repair as necessary.

SLC446B

Tool number

: WS39930000 ( — )

PBIC2663E

Water drain plug (front)

: 9.8 N·m (1.0 kg-m, 87 in-lb)

ALBIA0679ZZ

2011 Pathfinder

WATER INLET AND THERMOSTAT ASSEMBLY

CO-29

< REMOVAL AND INSTALLATION >

[VQ40DE]

WATER INLET AND THERMOSTAT ASSEMBLY

Exploded View

INFOID:0000000006247860

Removal and Installation

INFOID:0000000006247861

WARNING:

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

engine coolant escaping from the 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.

NOTE:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-

ing.

REMOVAL

1. Remove the engine under cover. Refer to

EXT-15, "Removal and Installation"

2. Partially drain engine coolant from the radiator. Refer to

CO-13, "Changing Engine Coolant"

CAUTION:

• Perform this step when engine is cold.

• Do not spill engine coolant on drive belts.

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

EM-26, "Removal and

Installation"

4. Remove the radiator hose (upper) from the radiator.
5. Remove the coolant reservoir hose from the radiator shroud and radiator.
6. Remove the fan shroud (lower) and (upper). Refer to

CO-18, "Exploded View"

7. Disconnect radiator hose (lower) and oil cooler hose from water inlet and thermostat assembly.

Water inlet and thermostat assembly 2.

Gasket

PBIC2839E

2011 Pathfinder

CO-30

< REMOVAL AND INSTALLATION >

[VQ40DE]

WATER INLET AND THERMOSTAT ASSEMBLY

8. Remove water inlet and thermostat assembly.

CAUTION:

• Do not disassemble water inlet and thermostat assembly.

• Replace water inlet and thermostat assembly as a unit, if

necessary.

INSPECTION AFTER REMOVAL

1. Check valve seating condition at room temperature. It should seat tightly.
2. Check valve operation.

• Place a thread so that it is caught in the valve of the thermo-

stat. Immerse fully in a container filled with water. Heat while

stirring.

• The valve opening temperature is the temperature at which

the valve opens and falls from the thread.

• Continue heating. Check the full-open lift amount.

• After checking the full-open lift amount, lower the water tem-

perature and check the valve closing temperature.

• If valve seating measured values are out of standard range, replace water inlet and thermostat assembly.

INSTALLATION

Installation is in the reverse order of removal, paying attention to the following.

CAUTION:

Do not spill engine coolant in engine room. Use rag to absorb engine coolant.

INSPECTION AFTER INSTALLATION

• Check for coolant leaks. Refer to

CO-11, "System Inspection"

• Start and warm up engine. Visually check for coolant leaks. Repair as necessary.

SLC962AB

SLC949A

Thermostat

Standard

Valve opening temperature

80.5 - 83.5

C (177 - 182

Full-open lift amount

8.6 mm / 95

C (0.339 in / 203

Valve closing temperature

C (171

2011 Pathfinder

WATER OUTLET AND WATER PIPING

CO-31

< REMOVAL AND INSTALLATION >

[VQ40DE]

WATER OUTLET AND WATER PIPING

Exploded View

INFOID:0000000006247862

Removal and Installation

INFOID:0000000006247863

WARNING:

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

engine coolant escaping from the 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.

NOTE:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-

ing.

REMOVAL

1. Drain engine coolant from radiator. Refer to

CO-13, "Changing Engine Coolant"

CAUTION:

• Perform this step when engine is cold.

• Do not spill engine coolant on drive belts.

2. Remove the intake manifold collector. Refer to

EM-27, "Removal and Installation"

3. Remove engine coolant temperature sensor as necessary.

CAUTION:

Be careful not to damage engine coolant temperature sensor.

4. Remove water outlet, heater pipe, water bypass hoses and water pipe.

INSTALLATION

Engine coolant temperature sensor

Washer

Water outlet

Heater hose

O-ring

Water pipe

Water hose

Radiator hose (upper)

Water hose

10. Water hose

11. Gasket

12. Heater pipe

13. Heater hose

14. Gasket

WBIA0615E

2011 Pathfinder

CO-32

< REMOVAL AND INSTALLATION >

[VQ40DE]

WATER OUTLET AND WATER PIPING

Installation is in the reverse order of removal, paying attention to the following.

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

• Before inserting water pipe into water outlet, apply mild soap to O-ring.

CAUTION:

Do not reuse O-ring.

INSPECTION AFTER INSTALLATION

• Check for coolant leaks. Refer to

CO-11, "System Inspection"

• Start and warm up engine. Visually check for coolant leaks. Repair as necessary.

2011 Pathfinder

SERVICE DATA AND SPECIFICATIONS (SDS)

CO-33

< SERVICE DATA AND SPECIFICATIONS (SDS)

[VQ40DE]

SERVICE DATA AND SPECIFICATIONS (SDS)

Standard and Limit

INFOID:0000000006247864

ENGINE COOLANT CAPACITY (APPROXIMATE)

Unit: (US qt, Imp qt)

RADIATOR

Unit: kPa (kg/cm

, psi)

THERMOSTAT

Engine coolant capacity (With reservoir tank at
“MAX” level)

Without rear A/C

10.2 (10-3/4, 9)

With rear A/C

13.4 (14-1/8, 11-3/4)

Reservoir cap relief pressure

Standard

98 - 118 (1.0 - 1.2, 14 - 17)

Leakage testing pressure

137 (1.4, 20)

Valve opening temperature

80.5 - 83.5

C (177 - 182

Full-open lift amount

8.6 mm / 95

C (0.339 in / 203

Valve closing temperature

C (171

2011 Pathfinder

CO-34

< PRECAUTION >

[VK56DE]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

INFOID:0000000006247865

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along

with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain

types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS

system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front

air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the SR and SB section of this Service Man-

ual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by

an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag

Module, see the SR section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-

ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-

tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a

hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing

serious injury.

• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precaution Necessary for Steering Wheel Rotation After Battery Disconnect

INFOID:0000000006247866

NOTE:

• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-

TEM).

• Remove and install all control units after disconnecting both battery cables with the ignition knob in the

″

LOCK

″

position.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.

If DTC is detected, perform trouble diagnosis according to self-diagnostic results.

For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-

anism is adopted on the key cylinder.

For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and

steering wheel rotation will become impossible.

If steering wheel rotation is required when battery power is interrupted, follow the procedure below before

starting the repair operation.

OPERATION PROCEDURE

1. Connect both battery cables.

NOTE:

Supply power using jumper cables if battery is discharged.

2. Use the Intelligent Key or mechanical key to turn the ignition switch to the

″

ACC

″

position. At this time, the

steering lock will be released.

3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be

rotated.

4. Perform the necessary repair operation.

2011 Pathfinder

Content .. 130 131 132 133 ..