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Nissan Pathfinder (2011 year). Manual - part 365

INTAKE MANIFOLD

EM-31

< REMOVAL AND INSTALLATION >

[VQ40DE]

• Check the surface distortion of the intake manifold mating surface

with straightedge and feeler gauge.

• If it exceeds the limit, replace intake manifold.

INSTALLATION

Installation is in the reverse order of removal. Note the following:

Intake Manifold

• If stud bolts were removed from cylinder head, install them and tighten to the specified torque.

• Tighten all nuts and bolts to the specified torque in two or more

steps in numerical order as shown.

• Adjust the neutral position steering angle sensor.

• Erase the CPU memory.

Limit

: 0.1 mm (0.004 in)

PBIC0870E

Intake manifold studs

: 10.8 N·m (1.1 kg-m, 8 ft-lb)

Intake manifold bolt and nuts
1st step

: 7.4 N·m (0.75 kg-m, 65 in-lb)

2nd step and after

: 29.0 N·m (3.0 kg-m, 21 ft-lb)

PBIC2879E

2011 Pathfinder

EM-32

< REMOVAL AND INSTALLATION >

[VQ40DE]

EXHAUST MANIFOLD AND THREE WAY CATALYST

EXHAUST MANIFOLD AND THREE WAY CATALYST

Exploded View

INFOID:0000000006247007

Removal and Installation (Three Way Catalyst)

INFOID:0000000006247008

WARNING:

Perform the work when the exhaust and cooling system have cooled sufficiently.

REMOVAL

1. Remove the front wheel and tire. Refer to

WT-50, "Adjustment"

2. Remove mud guard and front fender protector. Refer to

EXT-25, "Removal and Installation of Front Fender

Protector"

3. Remove the exhaust manifold cover bolts.
4. Remove the center exhaust tube, main muffler and front exhaust tube. Refer to

EX-6, "Exploded View"

5. Disconnect the air fuel ratio sensor 1 harness connector.
6. Remove the three way catalyst nuts and remove the three way catalyst.
7. Remove the air fuel ratio sensor 1 using Tool, if necessary.

Cylinder head (LH)

Cylinder head (RH)

Exhaust manifold studs (RH)

Gasket

Exhaust manifold nuts (RH)

Exhaust manifold (RH)

Exhaust manifold cover (RH)

Three way catalyst (RH)

Three way catalyst studs (RH)

10. Seal ring

11. Three way catalyst nuts (RH)

12. Three way catalyst nuts (LH)

13. Seal ring

14. Three way catalyst studs (LH)

15. Three way catalyst (LH)

16. Exhaust manifold cover (LH)

17. Exhaust manifold (LH)

18. Exhaust manifold nuts (LH)

19. Gasket

20. Exhaust manifold studs (LH)

ALBIA0654GB

2011 Pathfinder

EXHAUST MANIFOLD AND THREE WAY CATALYST

EM-33

< REMOVAL AND INSTALLATION >

[VQ40DE]

CAUTION:

• Be careful not to damage air fuel ratio sensor 1.

• Discard any air fuel ratio sensor 1 which has been dropped from a height of more than 0.5 m

(19.7 in) onto a hard surface such as a concrete floor; replace with a new sensor.

INSTALLATION

Installation is in the reverse order of removal.

• Tighten air fuel ratio sensor 1 to specification, if removed.

CAUTION:

• Do not over tighten air fuel ratio sensor 1. Doing so may cause damage to air fuel ratio sensor 1,

resulting in the “MIL” coming on.

• Before installing a new air fuel ratio sensor 1, clean exhaust system threads using oxygen sensor

thread cleaner and apply anti-seize lubricant.

Removal and Installation (Exhaust Manifold)

INFOID:0000000006247009

REMOVAL (LH)

WARNING:

Perform the work when the exhaust and cooling system have cooled sufficiently.

1. Remove engine room cover. Refer to

EM-25, "Removal and Installation"

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

EM-26, "Removal and

Installation"

3. Remove engine under cover. Refer to

EXT-15, "Removal and Installation"

4. Partially drain engine coolant. Refer to

CO-13, "Changing Engine Coolant"

5. Remove three way catalyst (LH). Refer to

EM-32, "Removal and Installation (Three Way Catalyst)"

6. Remove oil level gauge and oil level gauge guide. Refer to

EM-36, "Exploded View"

7. Disconnect water hoses at heater pipe. Refer to

CO-31, "Exploded View"

8. Remove heater pipe from cylinder head (LH). Refer to

CO-31, "Exploded View"

9. Loosen nuts in reverse order as shown.

•

: Front

NOTE:

Disregard the numerical order No. 7 and 8 in removal.

10. Remove exhaust manifold (LH).
11. Remove gaskets.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

INSPECTION AFTER REMOVAL

Surface Distortion

Tool number

: KV991J0050 (J-44626)

Air fuel ratio sensor

: 50.0 N·m (5.1 kg-m, 37 ft-lb)

Oxygen sensor thread cleaner

: — (J-43897-12)

Oxygen sensor thread cleaner

: — (J-43897 18)

AWBIA0725ZZ

2011 Pathfinder

EM-34

< REMOVAL AND INSTALLATION >

[VQ40DE]

EXHAUST MANIFOLD AND THREE WAY CATALYST

• Check the surface distortion of the exhaust manifold mating sur-

face with straightedge and feeler gauge.

• If it exceeds the limit, replace exhaust manifold.

INSTALLATION (LH)

Installation is in the reverse order of removal.

Exhaust Manifold Gasket

Install the exhaust manifold gasket in direction as shown.
•

: Front

• A: Identification hole

Exhaust Manifold

• If exhaust manifold studs were removed, install them and tighten to specification.

• Install exhaust manifold and tighten nuts in numerical order as

shown.

CAUTION:

Use new exhaust manifold nuts for installation.

NOTE:

Tighten nuts No. 1 and 2 in two steps. The numerical order No. 7

and 8 show second step.

: Front

REMOVAL (RH)

1. Remove three way catalyst (RH). Refer to

EM-32, "Removal and Installation (Three Way Catalyst)"

2. Remove heat shield from lower dash panel.
3. Remove support bolts from A/T fluid charging pipe. Refer to

TM-196, "4WD : Exploded View"

4. Loosen nuts in reverse order as shown.

•

: Front

NOTE:

Disregard the numerical order No. 7 and 8 in removal.

5. Remove exhaust manifold (RH) and exhaust manifold cover (RH) together.
6. Remove gaskets.

Limit : 0.3 mm (0.012 in)

PBIC1096E

AWBIA0726ZZ

AWBIA0725ZZ

AWBIA0727ZZ

2011 Pathfinder

EXHAUST MANIFOLD AND THREE WAY CATALYST

EM-35

< REMOVAL AND INSTALLATION >

[VQ40DE]

CAUTION:

Cover engine openings to avoid entry of foreign materials.

INSPECTION AFTER REMOVAL

Surface Distortion

• Check the surface distortion of the exhaust manifold mating sur-

face with straightedge and feeler gauge.

• If it exceeds the limit, replace exhaust manifold.

INSTALLATION (RH)

Installation is in the reverse order of removal.

NOTE:

If necessary, a crowfoot may be used to tighten the exhaust manifold nuts.

Exhaust Manifold Gasket

Install the exhaust manifold gasket in direction as shown.
•

: Front

• A: Identification hole

Exhaust Manifold

• If exhaust manifold studs were removed, install them and tighten to specification.

• Install exhaust manifold and tighten nuts in numerical order as

shown.

CAUTION:

Use new exhaust manifold nuts for installation.

NOTE:

Tighten nuts No. 1 and 2 in two steps. The numerical order No. 7

and 8 show second step.

: Front

Limit : 0.3 mm (0.012 in)

PBIC1096E

AWBIA0728ZZ

AWBIA0727ZZ

2011 Pathfinder

EM-36

< REMOVAL AND INSTALLATION >

[VQ40DE]

OIL PAN AND OIL STRAINER

OIL PAN AND OIL STRAINER

Exploded View

INFOID:0000000006247010

Removal and Installation

INFOID:0000000006247011

REMOVAL (LOWER)

WARNING:

To avoid the danger of being scalded, do not drain engine oil when engine is hot.

1. Remove rear engine undercover. Refer to

EXT-15, "Removal and Installation"

2. Drain engine oil. Refer to

LU-9, "Changing Engine Oil"

3. Remove the oil pan (lower) using the following steps.

Oil pan (upper)

Oil pressure switch

O-ring

Relief valve

O-ring

Oil cooler

Connector bolt

Oil filter

Drain plug

10. Drain plug washer

11. Oil pan (lower)

12. Rear cover plate

13. Oil strainer

O-ring

15. Oil level gauge guide

16. Oil level gauge

PBIC2883E

2011 Pathfinder

OIL PAN AND OIL STRAINER

EM-37

< REMOVAL AND INSTALLATION >

[VQ40DE]

a. Remove the oil pan (lower) bolts using power tool in reverse

order as shown.

b. Insert Tool between the oil pan (lower) and the oil pan (upper).

CAUTION:

• Be careful not to damage the mating surfaces.

• Do not insert screwdriver, this will damage the mating

surfaces.

NOTE:

Tap (1) Tool to insert it and then slide (2) it by tapping on the side

of the Tool as shown.

INSPECTION AFTER REMOVAL

Clean oil strainer if any object attached.

INSTALLATION (LOWER)

1. Install oil pan (lower) as follows:
a. Use scraper to remove old liquid gasket from mating surfaces.

• Also remove old liquid gasket from mating surface of oil pan

(upper).

• Remove old liquid gasket from the bolt holes and thread.

CAUTION:

Do not scratch or damage the mating surfaces when clean-

ing off old liquid gasket.

b. Apply a continuous bead of liquid gasket using Tool to the oil

pan (lower) as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

CAUTION:

Attaching should be done within 5 minutes after coating.

c. Install oil pan (lower).

PBIC2890E

Tool number

: KV10111100 (J-37228)

WBIA0566E

PBIC2888E

Tool number

: WS39930000 (

—

)

PBIC2889E

2011 Pathfinder

EM-38

< REMOVAL AND INSTALLATION >

[VQ40DE]

OIL PAN AND OIL STRAINER

• Tighten oil pan (lower) bolts in numerical order as shown.

2. Install oil pan drain plug. Refer to

EM-36, "Removal and Installation"

3. After 30 minutes fill with engine oil and inspect for leaks. Refer to

LU-9, "Changing Engine Oil"

CAUTION:

Do not fill the engine with oil for at least 30 minutes after oil pan is installed.

INSPECTION AFTER INSTALLATION

1. Start engine, and check for leaks of engine oil.
2. Stop engine and wait for 10 minutes.
3. Check engine oil level. Refer to

LU-8, "Inspection"

REMOVAL (UPPER)

WARNING:

To avoid the danger of being scalded, do not drain engine oil when engine is hot.

CAUTION:

• Perform this procedure when engine is cold.

• Do not spill engine oil on drive belts.

• Do not spill engine coolant on drive belts.

NOTE:

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

ing.
1. Remove engine under covers (front). Refer to

EXT-15, "Removal and Installation"

2. Remove air cleaner and air duct. Refer to

EM-26, "Removal and Installation"

3. Remove the oil pan (lower).
4. Drain engine coolant. Refer to

CO-13, "Changing Engine Coolant"

5. Remove oil level gauge and oil level gauge guide.
6. Reposition the (RH) brake caliper aside and support with a suitable wire without disconnecting the front

brake hose (4WD models). Refer to

BR-43, "Removal and Installation of Brake Caliper and Disc Rotor"

7. Remove front final drive assembly (4WD models). Refer to

DLN-356, "Removal and Installation"

8. Remove front frame crossmember.
9. Disconnect steering gear lower joint shaft bolt and steering gear nuts and bolts, position out of the way.

Refer to

ST-22, "Removal and Installation"

10. Remove stabilizer bar brackets and position stabilizer bar out of the way. Refer to

FSU-14, "Component"

11. Disconnect A/T fluid cooler tube brackets and position out of the way. Refer to

TM-193, "2WD : Exploded

View"

(2WD models),

TM-196, "4WD : Exploded View"

(4WD models).

12. Remove oil filter, if necessary. Refer to

LU-11, "Removal and Installation"

13. Disconnect oil cooler hoses and remove oil cooler, if necessary. Refer to

LU-12, "Removal and Installa-

tion"

14. Disconnect oil pressure switch and remove, if necessary.
15. Remove oil pan (lower).
16. Remove oil strainer.
17. Remove transmission joint bolts which pierce oil pan (upper). Refer to

TM-193, "2WD : Exploded View"

(2WD models),

TM-196, "4WD : Exploded View"

(4WD models).

18. Remove rear cover plate.

PBIC2890E

2011 Pathfinder

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