Nissan Murano Z51. Manual — part 662
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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
.
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
JPBIA1673GB
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< UNIT DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
Disassembly and Assembly
INFOID:0000000005515972
DISASSEMBLY
1.
Remove the following parts:
• Intake manifold collector: Refer to
.
• Intake manifold: Refer to
• Oil pans (lower and upper): Refer to
.
• Front and rear timing chain case: Refer to
• Cylinder head: Refer to
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
.
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
.
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.
D.
Front mark
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
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