Nissan Altima L32. Instruction — part 635
EM-76
< DISASSEMBLY AND ASSEMBLY >
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CYLINDER BLOCK
DISASSEMBLY AND ASSEMBLY
CYLINDER BLOCK
Disassembly and Assembly
INFOID:0000000004202134
CAUTION:
Apply new engine oil to parts marked in illustration before installation.
AWBIA0185GB
1.
Cylinder block
2.
O-ring
3.
Crankshaft position sensor (POS)
4.
Knock sensor
5.
Cylinder block heater (if equipped) 6.
Lower cylinder block
7.
Lower cylinder block bolt
8.
Snap ring
9.
Connecting rod
10. Connecting rod bearing
11. Connecting rod bearing cap
12. Connecting rod bearing cap bolt
13. Piston 14. Oil
ring
15. Second
ring
16. Top ring
17. Piston pin
18. Main thrust bearing
19. Main bearing upper
20. Crankshaft
21. Main bearing lower
22. Crankshaft rear oil seal
23. Pilot converter (CVT)
24. Crankshaft signal plate
25. Drive plate (CVT)
26. Reinforcement plate (CVT)
27. Flywheel (M/T)
A.
Follow assembly procedure
CYLINDER BLOCK
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DISASSEMBLY
1. Remove the engine and transaxle as an assembly from the vehicle, and separate the transaxle from the
engine. Refer to
EM-72, "Removal and Installation"
2. Mount the engine on a suitable engine stand.
3. Drain any remaining engine oil and coolant from the engine.
4. Remove the following components and associated parts.
• Exhaust manifold and three way catalyst assembly. Refer to
EM-30, "Removal and Installation"
• Intake manifold collector. Refer to
EM-26, "Removal and Installation"
• Intake manifold and fuel tube assembly. Refer to
EM-26, "Removal and Installation"
.
• Ignition coils. Refer to
EM-35, "Removal and Installation"
• Rocker cover. Refer to
EM-39, "Removal and Installation"
.
• Front cover, timing chain, and balancer unit. Refer to
EM-52, "Removal and Installation"
EM-64, "Removal and Installation"
.
5. Remove the knock sensor.
CAUTION:
Carefully handle the sensor and do not drop the sensor.
6. Remove crankshaft position sensor (POS).
CAUTION:
• Avoid impacts such as a dropping.
• Do not disassemble.
• Keep it away from metal particles.
• Do not place sensor close to magnetic materials.
7. Remove the flywheel (M/T models) or drive plate (CVT models).
Hold the crankshaft with a stopper plate and use a suitable tool
to remove the bolts.
CAUTION:
• Be careful not to damage the flywheel contact surface for
the clutch disc.
NOTE:
• The flywheel two-block construction allows movement in
response to transmission side pressure, or when twisted in its
rotational direction, therefore, some amount of noise is nor-
mal.
8. Remove pilot converter using Tool (CVT models).
9. Remove the piston and connecting rod assemblies.
a. Position the crankshaft and corresponding connecting rod, to be
removed, to the bottom dead center stroke.
b. Remove the connecting rod cap. Number the cap so it can be
assembled in the same position.
c. Using a hammer handle or similar tool, push the piston and con-
necting rod assembly out of the top of the cylinder block. Num-
ber the piston and rod so it can be assembled in the same
position.
KBIA0062E
Tool Number
: ST16610001 (J-23907)
WBIA0483E
PBIC0259E
EM-78
< DISASSEMBLY AND ASSEMBLY >
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CYLINDER BLOCK
• Before removing the piston and connecting rod assembly, check the connecting rod side clearance.
Refer to
EM-83, "Inspection After Disassembly"
.
10. Remove the connecting rod bearings. If reusing, number them so they can be assembled in the same
position and direction.
CAUTION:
• When removing them, note the installation position. Keep them in the correct order.
11. Remove the piston rings from the piston.
• Use a piston ring expander.
• Before removing the piston rings, check the piston ring side
clearance. Refer to
EM-83, "Inspection After Disassembly"
.
CAUTION:
• When removing the piston rings, be careful not to damage
the piston.
• Be careful not to damage piston rings by expanding them
excessively, if reusing them.
12. Remove the piston from the connecting rod as follows.
a. Using a snap ring pliers, remove the two snap rings.
b. Heat the piston to 60
° - 70°C (140° - 158°F) with a heat gun, or
equivalent.
c.
Push out piston pin with a punch of an outer diameter of approx-
imately 19 mm (0.75 in).
PBIC0087E
PBIC0260E
PBIC0261E
PBIC0262E
CYLINDER BLOCK
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13. Remove the lower cylinder block bolts.
• Before loosening the lower cylinder block bolts, measure the
crankshaft side clearance. Refer to
.
• Loosen them in the order as shown to remove them.
14. Remove the lower cylinder block.
• Cut the Silicone RTV Sealant and remove the lower cylinder block from the cylinder block, using Tool.
CAUTION:
Be careful not to damage the mating surface.
15. Remove the crankshaft.
CAUTION:
• Do not damage or deform the signal plate while mounted
on the crankshaft.
• When setting the crankshaft on a flat surface, use a block
of wood to avoid interference between the signal plate
and the surface.
• Do not remove signal plate unless it is necessary.
16. Pull the rear oil seal out of the rear end of the crankshaft.
CAUTION:
Do not to damage the crankshaft or cylinder block when removing the rear oil seal.
NOTE:
When replacing the rear oil seal without removing the cylinder block, use a screwdriver to pull it out from
between crankshaft and block.
17. Remove the main bearings and thrust bearings from the cylinder block and lower cylinder block.
CAUTION:
Identify and number the bearings, if reusing them, so that they are assembled in the same position
and direction.
ASSEMBLY
1. Using compressed air, clean out the coolant and oil passages in the cylinder block, the cylinder bore and
the crankcase to remove any foreign material.
WARNING:
Use approved safety glasses to protect your eyes.
2. Install the drain plugs on the cylinder block.
• Apply Silicone RTV Sealant.
Use Genuine Silicone RTV Sealant, or equivalent. Refer to
GI-15, "Recommended Chemical Products and Sealants"
.
• Replace the copper washers with new ones.
•
: Front
WBIA0037E
Seal cutter
KV10111100 (J-37228)
SBIA0275E
Drain plug torque
Drain plug A
: 54 Nm (5.5 kg-m, 40 ft-lb)
Drain plug B
: 9.8 Nm (1.0 kg-m, 80 in-lb)
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