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Nissan Pathfinder (2010 year). Manual - part 386

EM-216

< REMOVAL AND INSTALLATION >

[VK56DE]

ENGINE ASSEMBLY

a. Before removing the drive plate, put a match mark (A) on the

crankshaft and drive plate for alignment during installation.

b. Remove the drive plate.

• Holding the crankshaft pulley bolt, lock the crankshaft to

remove the drive plate bolts.

• Remove drive plate bolts diagonally.

CAUTION:

• Do not damage the drive plate. Especially, avoid deform-

ing and damaging the signal plate teeth (circumference

position).

• Keep magnetic materials away from signal plate.

• Place the drive plate with the signal plate surface facing

upward.

CAUTION:

Use an engine stand that has a load capacity [approximately 240kg (529 lb) or more] large enough

for supporting the engine weight.

• If the load capacity of the stand is not adequate, remove the following parts beforehand to

reduce the potential risk of overturning the stand.

- Remove the fuel tube and fuel injector assembly. Refer to

EM-176, "Removal and Installation"

- Remove the intake manifold. Refer to

EM-162, "Removal and Installation"

- Remove the ignition coil. Refer to

EM-173, "Removal and Installation"

- Remove the rocker cover. Refer to

EM-174, "Removal and Installation"

- Other removable brackets.

CAUTION:

Before removing the hanging chains, make sure the engine stand is stable and there is no risk of

overturning.

36. Remove the generator, if necessary. Refer to

CHG-21, "Removal and Installation"

37. Remove the engine mounting insulator and bracket using power tool.

INSTALLATION

Installation is in the reverse order of removal.

• Tighten engine mounting bracket bolts in numerical order as

shown.

CAUTION:

• When replacing an engine or transmission you must make sure the dowels are installed correctly

during re-assembly.

ALBIA0522ZZ

KBIA2491E

Engine mounting bracket
bolts

: 49 N·m (5.0 kg-m, 36 ft-lb)

AWBIA0820ZZ

2010 Pathfinder

ENGINE ASSEMBLY

EM-217

< REMOVAL AND INSTALLATION >

[VK56DE]

• Improper alignment caused by missing dowels may cause vibration, oil leaks or breakage of driv-

etrain components.

INSPECTION AFTER INSTALLATION

• Before starting the engine, check oil/fluid levels including engine coolant and engine oil. If the levels are

lower than required quantity, fill to the specified level. Refer to

MA-16, "For North America"

• Use procedure below to check for fuel leakage.

• Turn ignition switch ON (with engine stopped). With fuel pressure applied to the fuel piping, check for fuel

leakage at the connection points.

• Start engine. With engine speed increased, check again for fuel leakage at connection points.

• Run engine to check for unusual noise and vibration.

NOTE:

If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide

may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop

after hydraulic pressure rises.

• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oil/fluids including

engine oil and engine coolant.

• Bleed air from passages in lines and hoses, such as in cooling system.

• After cooling down the engine, again check oil/fluid levels including engine oil and engine coolant. Refill to

specified level if necessary.

• Summary of the inspection items:

* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.

Item

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Other oils and fluids*

Level

Leakage

Level

Fuel

Leakage

Exhaust gas

—

Leakage

—

2010 Pathfinder

EM-218

< DISASSEMBLY AND ASSEMBLY >

[VK56DE]

ENGINE UNIT

DISASSEMBLY AND ASSEMBLY

ENGINE UNIT

Exploded View

INFOID:0000000005260535

Knock sensor sub-harness

Knock sensor

Cylinder block

Main bearing upper

Top ring

Second ring

Oil ring

Crankshaft key

Piston

10. Connecting rod

11.

Snap ring

12.

Piston pin

13. Connecting rod bearing

14.

Connecting rod bearing cap

15.

Main bearing cap

WBIA0471E

2010 Pathfinder

ENGINE UNIT

EM-219

< DISASSEMBLY AND ASSEMBLY >

[VK56DE]

Disassembly and Assembly

INFOID:0000000005260536

DISASSEMBLY

NOTE:

Explained here is how to disassemble with engine stand supporting transmission surface. When using differ-

ent type of engine stand, some steps may be different.
1. Remove engine assembly from vehicle and mount to engine stand. Refer to

EM-214, "Removal and

Installation"

CAUTION:

Before removing the hanging chains, make sure engine stand is stable and there is no risk of over-

turning.

2. Drain engine oil. Refer to

LU-25, "Changing Engine Oil"

3. Drain engine coolant by removing the cylinder block drain plugs

(A), (B), (C) and (D) as shown.

4. Remove the following components and associated parts (the parts referred to in step 1 are not included

here).

• Oil pan (upper and lower) and oil strainer. Refer to

EM-169, "Removal and Installation"

• Crankshaft pulley, front cover and timing chain. Refer to

EM-181, "Removal and Installation"

• Camshaft. Refer to

EM-189, "Removal and Installation"

• Cylinder head. Refer to

EM-204, "Removal and Installation"

5. Remove knock sensor and sub harness.

CAUTION:

Carefully handle sensor, avoiding shocks.

6. Check connecting rod side clearance. Refer to

EM-226, "Inspection After Disassembly"

7. Remove piston and connecting rod assembly as follows.
a. Position the crankshaft pin corresponding to the connecting rod to be removed onto bottom dead center.
b. Remove connecting rod cap.

16. Thrust bearing lower

17.

Main bearing lower

18.

Crankshaft

19. Pilot converter

20.

Thrust bearing upper

21.

Side bolt

22. Drive plate

23.

Reinforcement plate

24.

Rear oil seal retainer

25. Rear oil seal

26.

Transmission

27.

O-ring

28. Crankshaft position sensor (POS)

29.

Gasket

30.

Cylinder block heater

31. Connector cap

WBIA0419E

KBIA2549E

2010 Pathfinder

EM-220

< DISASSEMBLY AND ASSEMBLY >

[VK56DE]

ENGINE UNIT

Push the piston and connecting rod assembly out to the cylinder

head side using suitable tool.

8. Remove connecting rod bearings.

CAUTION:

When removing them, note the installation position. Keep them in the correct order.

9. Check piston ring side clearance. Refer to

EM-226, "Inspection After Disassembly"

10. Remove piston rings from piston using suitable tool.

CAUTION:

• Do not damage piston.

• Do not damage piston rings by expanding them exces-

sively.

11. Remove piston from connecting rod as follows.
a. Remove snap ring using suitable tool.

b. Heat piston to 60

to 70

C (140

to 158

F) using suitable tool.

PBIC0086E

PBIC0087E

PBIC0260E

PBIC0261E

2010 Pathfinder

ENGINE UNIT

EM-221

< DISASSEMBLY AND ASSEMBLY >

[VK56DE]

c. Push out piston pin using suitable tool.

12. Separate and remove rear oil seal retainer from cylinder block.

CAUTION:

Do not damage mating surface.

13. Remove rear oil seal from rear oil seal retainer.

14. Measure the crankshaft side clearance. Refer to

EM-226, "Inspection After Disassembly"

15. Remove main bearing caps as follows:

• Loosen bolts in several different steps.

a. Loosen side bolts (M10) starting from 30 to 21 to remove.
b. Loosen main bearing cap sub bolts (M9) starting from 20 to 11 to

remove.

c. Loosen main bearing cap bolts (M12) starting from 10 to 1 to

remove.

d. Remove main bearing cap.

• Insert 2 bolts into bolt holes, and then remove main bearing

cap by lifting up and shaking forward and backward.

16. Remove crankshaft.

17. Remove the main bearings and thrust bearings from the cylinder block and main bearing caps.

• When removing them, note the installation position. Keep them in the correct order.

18. Remove pilot converter using Tool if necessary.

PBIC0262E

PBIC0090E

KBIA2492E

Tool number

: ST16610001 (J-23907)

WBIA0596E

2010 Pathfinder

EM-222

< DISASSEMBLY AND ASSEMBLY >

[VK56DE]

ENGINE UNIT

ASSEMBLY

1. Fully air-blow the coolant and oil passages in the cylinder block, cylinder bore, and crankcase to remove

any foreign material.

WARNING:

Use goggles to protect your eyes.

2. Install each plug to the cylinder block (only screw-type plugs are

shown).

• Apply liquid gasket.

Use Genuine Thread Sealant or equivalent. Refer to

GI-14,

• Replace copper washers with new ones.

• Tighten each plug as specified below.

3. Install main bearings and thrust bearings.
a. Remove any dust, dirt, and oil on the bearing mating surfaces of

the cylinder block and main bearing caps.

b. Install thrust bearings to both sides of the No. 3 journal housing

on the cylinder block and main bearing caps

• Install thrust bearings with the oil groove facing the crankshaft

arm (outside).

• Install thrust bearings with a protrusion in the center on the

main bearing caps.

Install main bearings paying attention to the direction.

• Install the one with oil holes onto the cylinder block and the

one without oil holes onto the main bearing cap.

• Before installing bearings, apply engine oil to bearing surface

(inside). Do not apply oil to the back surface, but thoroughly

clean it.

• When installing, align the bearing stopper to the notch.

• Ensure the oil holes on the cylinder block and those on the

corresponding bearing are aligned.

4. Install pilot converter to the crankshaft using suitable tool.
5. Install crankshaft to the cylinder block.

• While turning crankshaft by hand, make sure it turns smoothly.

Part

Washer

Tightening torque

Yes

53.9 N·m (5.5 kg-m, 40 ft-lb)

19.6 N·m (2.0 kg-m, 15 ft-lb)

Yes

62.7 N·m (6.4 kg-m, 46 ft-lb)

Yes

62.7 N·m (6.4 kg-m, 46 ft-lb)

WBIA0419E

PBIC0093E

PBIC0094E

EMP0569D

2010 Pathfinder

ENGINE UNIT

EM-223

< DISASSEMBLY AND ASSEMBLY >

[VK56DE]

6. Install main bearing caps.

• Align the identification number to the journal position to install.

• Install it with the front mark (indicated by the arrow) facing the

front of engine.

• Tap caps lightly to seat them in the installation position.

7. Follow the steps below to tighten each main bearing cap bolt.
a. Apply engine oil to threads and seating surfaces of bolts, and

tighten all bolts temporarily.

b. Measure tightening angle using Tool.

CAUTION:

Measure tightening angle using Tool. Do not measure visu-

ally.

• Rotate crankshaft by hand after bolts are tightened. Check if it rotates smoothly.

• Check crankshaft side clearance. Refer to

EM-226, "Inspection After Disassembly"

8. Install rear oil seal to rear oil seal retainer.

CAUTION:

Do not damage or scratch outer circumference of oil seal.

• Install new rear oil seal in the direction shown.

KBIA2533E

Main bearing cap bolts in
order of 1 to 10

: 39.2 N·m (4.0 kg-m, 29 ft-lb)

Main bearing cap sub
bolts in order of 11 to 20

: 29.4 N·m (3.0 kg-m, 22 ft-lb)

PBIC0090E

Tool number

: KV10112100 (BT-8653-A)

Main bearing cap bolts in
order of 1 to 10

: 40

Main bearing cap sub bolts
in order of 11 to 20

: 30

Side bolts in order of 21 to
30

: 49 N·m (5.0 kg-m, 36 ft-lb)

WBIA0597E

SEM715A

2010 Pathfinder

Content .. 384 385 386 387 ..