Nissan Pathfinder. Manual - part 568

CYLINDER BLOCK

EM-111

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UNIT DISASSEMBLY AND ASSEMBLY

CYLINDER BLOCK

Exploded View

INFOID:0000000009177944

AWBIA1354ZZ

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CYLINDER BLOCK

Disassembly and Assembly

INFOID:0000000009177945

CAUTION:

• Apply new engine oil to parts as marked in illustrations before installation.

• Place removed parts such as bearings and bearing caps in their proper order and direction.

• When installing the connecting rod nuts and main bearing cap bolts, apply new engine oil to the

threads and mating surfaces

• Do not allow any magnetic materials to contact the signal plate teeth on the drive plate.

DISASSEMBLY

1. Remove the engine assembly. Refer to 

EM-102, "2WD : Removal and Installation"

 (2WD) or 

EM-107,

"4WD : Removal and Installation"

(4WD).

2. Remove the drive plate. Refer to 

EM-131, "Dowel Pin Alignment"

.

3. Remove pilot converter.

4. Cut away liquid gasket and remove rear oil seal retainer using

Tool. Refer to 

EM-4, "Precaution for Liquid Gasket"

.

CAUTION:

• Be careful not to damage mount surface.

• If rear oil seal retainer is removed, replace it with a new

one.

NOTE:

Rear oil seal and retainer form a single part and are replaced as

an assembly.

1.

Reinforcement plate

2.

Drive plate 

3.

Rear oil seal retainer

4.

Rear oil seal

5.

Sub harness

6.

Knock sensor 

7.

Cylinder block

8.

Thrust bearing (upper)

9.

Main bearing (upper)

10. Crankshaft

11. Crankshaft key

12. Thrust bearing (lower)

13. Main bearing (lower)

14. Main bearing cap

15. Main bearing cap bolt

16. Main bearing beam

17. Baffle plate

18. Connecting rod bolt

19. Connecting rod bearing cap

20. Connecting rod bearing

21. Connecting rod

22. Snap ring

23. Piston pin

24. Piston

25. Oil ring

26. Second ring

27. Top ring

28. Pilot converter

29. Oil jet

30. Gasket (for Canada)

31. Cylinder block heater (for Canada)

A.

Crankshaft side

B.

Chamfered

C.

Follow the assembly procedure

D.

Front mark

Tool number

: ST16610001 (J-23907)

SEM005G

Tool number

: KV10111100 (J-37228)

SEM830E

CYLINDER BLOCK

EM-113

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5. Install the engine on engine stand. Any commercially available

engine stand can be used.

CAUTION:

• Use an engine stand that has a load capacity [approxi-

mately 240kg (529 lb) or more] large enough for support-

ing the engine weight. 

• Before removing the hanging chains, make sure the

engine stand is stable and there is no risk of overturning.

6. Remove the knock sensor.

CAUTION:

Carefully handle sensor to avoid shocking it.

7. Drain the engine of all engine coolant and engine oil.
8. Remove the oil pan. Refer to 

EM-37, "Removal and Installation (Upper Oil Pan)"

.

9. Remove the timing chain. Refer to 

EM-62, "Removal and Installation"

.

10. Remove the cylinder head. Refer to 

EM-89, "Removal and Installation"

.

11. Remove the piston and connecting rod assemblies.
a. Position the crankshaft pin corresponding to the connecting rod

to be removed onto the bottom dead center. 

b. Remove the connecting rod cap. 
c. Using a hammer handle or similar tool, push the piston and con-

necting rod assembly out to the cylinder head side. 

• Before removing the piston and connecting rod assembly,

check the connecting rod side clearance. Refer to 

EM-144,

"Connecting Rod Bearing"

.

12. Remove the connecting rod bearings. 

CAUTION:

• When removing the connecting rod side bearings, note the installation position. Keep them in

the correct order.

13. Remove the piston rings from the piston. 

• Use a piston ring expander.

CAUTION:

• When removing the piston rings, be careful not to damage

the piston. Do not expand the rings excessively.

• Be careful to mark the rings if they are to be reused so

they are installed in their original position.

• Before removing the piston rings, check the piston ring side clear-

ance. Refer to 

EM-121, "Inspection"

.

14. Remove the piston from the connecting rod as follows. 
a. Using a snap ring pliers, remove the snap ring.

CAUTION:

Do not reuse snap rings, always replace with new ones.

PBIC0085E

PBIC0086E

PBIC0087E

PBIC0260E

EM-114

< UNIT DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

b. Heat the pistons to 60

° - 70°C (140° - 158°F).

WARNING:

Pistons contain heat. When working, wear protective equip-

ment to avoid getting burned.

c.

Push out the piston pin with a suitable tool with an outer diame-

ter of approximately 20 mm (0.8 in).

15. Remove the baffle plate from the main bearing beam.
16. Loosen the bolts in the reverse order shown and remove the

main bearing beam, bearing caps and crankshaft. 

• Before loosening the main bearing cap bolts, measure the

crankshaft side clearance.

Refer to 

EM-121, "Inspection"

.

17. Remove the oil jets and dowel pins.
18. Remove the main bearings and thrust bearings from the cylinder

block and main bearing caps.

• When removing them, note the direction and position. Keep

them in the correct order for installation. 

ASSEMBLY

1. Blow out the engine coolant and engine oil passages and cylinder bore to remove any foreign materials.

CAUTION:

Use goggles to protect your eyes.

SEM965A

PBIC0262E

: Engine front

JPBIA0439ZZ

PBIC0898E