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Nissan Altima L32. Manual - 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

Cylinder block

O-ring

Crankshaft position sensor (POS)

Knock sensor

Cylinder block heater (if equipped) 6.

Lower cylinder block

Lower cylinder block bolt

Snap ring

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)

Follow assembly procedure

CYLINDER BLOCK

EM-77

< DISASSEMBLY AND ASSEMBLY >

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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"

• Cylinder head. Refer to

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.

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

EM-79

< DISASSEMBLY AND ASSEMBLY >

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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

EM-83, "Inspection After

Disassembly"

• 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

• 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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Content .. 633 634 635 636 ..