Nissan Murano Z51. Manual - part 662

EM-120

< UNIT DISASSEMBLY AND ASSEMBLY >

CYLINDER HEAD

• Check the valve spring pressure at specified spring height.

• If the installation load or load with valve open is out of the stan-

dard, replace valve spring.

INSPECTION AFTER INSTALLATION

Inspection for Leakage

The following are procedures for checking fluids leakage, lubricates leakage, and exhaust gases leakage.

• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required

quantity, fill to the specified level. Refer to 

MA-15, "FOR NORTH AMERICA : Fluids and Lubricants"

 (for

North America) or 

MA-16, "FOR MEXICO : Fluids and Lubricants"

 (for Mexico).

• Use procedure below to check for fuel leakage.
- Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-

age at 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.
• Warm up engine thoroughly to check there is no leakage of fuel, exhaust gases, or any oil/fluids including

engine oil and engine coolant.

• Bleed air from lines and hoses of applicable lines, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the

specified level, if necessary.

Summary of the inspection items:

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

Standard (Intake and exhaust)

: Refer to 

EM-148, 

"Cylinder Head"

.

Free height

Installation height

Installation load

Height during valve open

Load with valve open

SEM113

Items

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Other oils and fluid*

Level

Leakage

Level

Fuel

Leakage

Leakage

Leakage

Exhaust gases

—

Leakage

—

CYLINDER BLOCK

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CYLINDER BLOCK

Exploded View

INFOID:0000000005515971

1.

Reinforcement plate

2.

Drive plate

3.

Rear oil seal retainer

4.

Sub harness

5.

Knock sensor 

6.

Cylinder block

7.

Thrust bearing (upper)

8.

Main bearing (upper)

9.

Crankshaft

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EM-122

< UNIT DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

Disassembly and Assembly

INFOID:0000000005515972

DISASSEMBLY

1.

Remove the following parts:
• Intake manifold collector: Refer to 

EM-33, "Exploded View"

.

• Intake manifold: Refer to 

EM-36, "Exploded View"

.

• Oil pans (lower and upper): Refer to 

EM-43, "Exploded View"

.

• Front and rear timing chain case: Refer to 

EM-93, "Exploded View"

.

• Cylinder head: Refer to 

EM-110, "Exploded View"

.

2.

Remove knock sensor.

CAUTION:

Carefully handle sensor avoiding shocks.

3.

Remove rear oil seal retainer.
• Remove by inserting screwdriver between main bearing cap and rear oil seal retainer.

CAUTION:

If rear oil seal retainer is removed, replace it with new one.
NOTE:
Regard both rear oil seal and retainer as an assembly.

4.

Remove baffle plate from main bearing beam.

5.

Remove piston and connecting rod assembly with the following procedure:
• Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer to

EM-130, "Inspection"

.

CAUTION:

Be careful not to drop connecting rod bearing, and to scratch the surface.

a.

Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.

b.

Remove connecting rod bearing cap.

c.

Using a hammer handle or similar tool, push piston and connect-
ing rod assembly out to the cylinder head side.

CAUTION:

Be careful not to damage the cylinder wall and crankshaft
pin, resulting from an interference of the connecting rod big
end.

6.

Remove connecting rod bearings from connecting rod and connecting rod bearing cap.

CAUTION:

• Be careful not to drop connecting rod bearing, and to scratch the surface.
• Identify installation positions, and store them without mixing them up.

7.

Remove piston rings form piston. 
• Before removing piston rings, check the piston ring side clearance. Refer to 

EM-130, "Inspection"

.

10. Crankshaft key

11. Thrust bearing (lower)

12. Main bearing (lower)

13. Main bearing cap

14. Main bearing cap bolt

15. Main bearing beam

16. Baffle plate

17. Connecting rod bolt

18. Connecting rod bearing cap

19. Connecting rod bearing

20. Connecting rod

21. Snap ring

22. Piston pin

23. Piston

24. Oil ring

25. Second ring

26. Top ring

27. Pilot converter

28. Oil jet

29. Gasket (for Canada)

30. Cylinder block heater (for Canada)

A.

Crankshaft side

B.

Chamfered

C.

Refer to 

EM-122

D.

Front mark

Refer to 

GI-4, "Components"

 for symbols in the figure.

EMQ0191D

CYLINDER BLOCK

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• Use a piston ring expander (commercial service tool) (A).

CAUTION:

• When removing piston rings, be careful not to damage

piston.

• Be careful not to damage piston rings by expanding them

excessively.

8.

Remove piston from connecting rod as follows: 

a.

Using a snap ring pliers (A), remove snap rings.

b.

Heat piston to 60 to 70

°

C (140 to 158

°

F) with an industrial use

drier (A) or equivalent.

c.

Push out piston pin with stick of outer diameter approximately 20
mm (0.79 in).

9.

Remove main bearing cap bolts.
NOTE:
• Before loosening main bearing cap bolts, measure the crankshaft end play. Refer to 

EM-130, "Inspec-

tion"

.

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