Nissan Altima L32. Manual - part 668

EM-208

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CYLINDER BLOCK

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

Tool. Refer to 

EM-111, "Precaution for Liquid Gasket"

.

CAUTION:

• Be careful not to damage mounting 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 handled as

an assembly.

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-234,

"Cylinder Block"

.

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-216, "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.

Tool number

: KV10111100 (J-37228)

SEM830E

PBIC0086E

PBIC0087E

PBIC0260E

CYLINDER BLOCK

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b. Heat the pistons to 60

° - 70°C (140° - 158°F).

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

ter approximately 20 mm (0.8 in).

15. Remove the rear oil seal retainer from the cylinder block.

• Insert a screwdriver or similar tool between the rear end of the crankshaft counter weight and rear oil

seal retainer, and separate the liquid gasket to remove.

CAUTION:

Be careful not to damage the mating surface.

NOTE:

When replacing the rear oil seal during on-vehicle service, it is necessary to remove the oil pan. Refer to

EM-139, "Removal and Installation"

.

16. Remove the baffle plate from the main bearing beam.
17. Loosen the bolts in the numerical order as 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-216, "Inspection"

.

18. Remove the oil jets and dowel pins.
19. 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

SEM965A

PBIC0262E

SEM842E

PBIC0898E

EM-210

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CYLINDER BLOCK

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

WARNING:

Use goggles to protect your eyes.

2. Apply liquid gasket and install each plug into the cylinder block.

• Use Genuine Silicone RTV Sealant or equivalent. Refer to 

GI-15, "Recommended Chemical Products

and Sealants"

.

3. Install the oil jets.

• Insert the oil jet dowel pin into the cylinder block dowel pin

hole, and tighten the bolts.

4. Install the main bearings and the thrust bearings.
a. Remove dust, dirt, and oil on the bearing mating surfaces of the

cylinder block and the main bearing cap.

b. Install the thrust bearings to both sides of the No. 3 journal hous-

ing on the cylinder block and the main bearing cap.

• Install the thrust bearings with the oil groove facing the crank-

shaft arm (outside).

• Install bearing with a projection on one end on cylinder block

and bearing with a projection at center on cap. Align each pro-

jection with mating notch.

5. Set the upper main bearings in their proper positions on the cyl-

inder block.

• Confirm the correct main bearings are used. Refer to 

EM-216,

"Inspection"

.

6. Instructions for the re-use of the main bearing cap bolts.

• A plastic zone tightening method is used for tightening the

main bearing cap bolts. Measure d1 and d2 as shown. 

• For d2, select the minimum diameter in the measuring area.

• If the difference between d1 and d2 exceeds the limit, replace

the bolts for assembly. 

PBIC0898E

PBIC0807E

SEM175F

Limit (d1 - d2)

: 0.11 mm (0.0043 in)

SEM177F

CYLINDER BLOCK

EM-211

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7. After installing the crankshaft, lower main bearings, main bear-

ing caps, main bearing beam, and bearing cap bolts. Tighten the

bearing cap bolts in the numerical order as shown.

a. Make sure that the front marks on the main bearing beam faces

the front of the engine.

b. Prior to tightening all the bearing cap bolts, place the bearing

beam in its proper position by shifting the crankshaft in the axial

position.

c. After tightening the bearing cap bolts, make sure the crankshaft

turns smoothly.

d. Lubricate the threads and seat surfaces of the bolts with new

engine oil.

e. Tighten the bolts in two stages:

CAUTION:

Measure the tightening angle in stage 2 using Tool. Do not mea-

sure visually. 

8. Measure crankshaft end play.

• If beyond the limit, replace the bearing with a new one.

SEM851E

Stage 1

: 32 - 38 N·m (3.3 - 3.9 kg-m, 24 - 28 ft-lb)

Stage 2

: 90

° - 95° degrees clockwise

Tool number

: KV10112100 (BT-8653-A)

SEM456G

PBIC0096E

Standard

: 0.10 - 0.25 mm (0.0039 - 0.0098 in)

Limit

: 0.30 mm (0.0118 in)

SEM852E