Nissan Altima HL32 Hybrid. Manual - part 391

EM-78

< DISASSEMBLY AND ASSEMBLY >

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CYLINDER BLOCK

12. 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.

13. 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.

14. 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.

15. 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.

16. 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. Be sure the grommet (1) is installed flush with the flange plane

as shown prior to mating the engine and transaxle.

CAUTION:

Do not use lubricating oil for lubricant. 

NOTE:

Be careful that the edge does not protrude from the socket.

WBIA0037E

Seal cutter

KV10111100 (J-37228)

SBIA0275E

ALDIA0206ZZ

CYLINDER BLOCK

EM-79

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3. 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

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

the cylinder block and lower cylinder block.

b. Install the thrust bearings to both sides of the No. 3 main bearing

journal on the cylinder block.

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

shaft arm (outside). 

c. Install the main bearings (D, G) paying attention to their position

and direction.

• The main bearing (C) with an oil hole and groove goes on the

cylinder block. The main bearing (H) without them goes on the

lower cylinder block.

• Only the main bearing (D) (on the cylinder block) for No. 3

journal has different specifications.

• Before installing the bearings, apply engine oil to the bearing

friction surface (inside). Do not apply oil to the back surface,

but thoroughly clean it.

• When installing, align the bearing stopper (B) to the notch.

• Make sure that the oil holes on the cylinder block and those on

the corresponding bearing (A) are aligned.

5. Install the signal plate to the crankshaft.
a. Position the crankshaft and signal plate using a positioning

dowel pin, and tighten the bolts to specification.

b. Remove the dowel pin.

CAUTION:

Be sure to remove dowel pin before installing the crank-

shaft.

NOTE:

Dowel pins for the crankshaft and signal plate are supplied as a

set for each.

6. Install the crankshaft onto the cylinder block.

• While turning the crankshaft by hand, check that it turns

smoothly. 

Drain plug torque
Drain plug A

: 53.9 N·m (5.5 kg-m, 40.0 ft-lb)

Drain plug B

: 9.8 N·m (1.0 mm, 87 in-lb)

AWBIA0070ZZ

PBIC0264E

AWBIA0071ZZ

ALBIA0208ZZ

EM-80

< DISASSEMBLY AND ASSEMBLY >

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CYLINDER BLOCK

7. Install the lower cylinder block.

• Apply Silicone RTV Sealant to positions as shown. 

• Use Genuine Silicone RTV Sealant, or equivalent. Refer to 

GI-

15, "Recommended Chemical Products and Sealants"

. 

CAUTION:

After the Silicone RTV Sealant is applied, the lower cylinder

block installation must be finished within 5 minutes.

NOTE:

Cylinder block and lower cylinder block are machined together. Neither of them can be replaced sepa-

rately.

8. Tighten lower cylinder block bolts in the numerical order as

shown and according to the following steps:

CAUTION:

Check tightening angle. Do not make judgment by visual

inspection. 

a. Apply new engine oil to threads and seat surfaces of the bolts.

b. Tighten bolts No. 11 - 22 only in the order as shown, to specifica-

tion below.

c.

Tighten bolts No. 1 - 10 only in the order as shown, to specifica-

tion below.

d. Tighten bolts No. 1 - 10 only in the order as shown, to specifica-

tion below.

• Wipe off completely any protruding Silicone RTV Sealant on rear oil seal installation surface and the

exterior of engine.

• Check crankshaft side clearance. Refer to 

EM-83, "Inspection After Disassembly"

.

• After installing the bolts, make sure that the crankshaft can be rotated smoothly by hand.

9. Install the rear oil seal.

• Press the oil seal between cylinder block and crankshaft with a

suitable drift.

• Be careful not to touch the grease on the oil seal lip.

• Be careful not to cause scratches or burrs when pressing in

the rear oil seal.

Dimension A

: 3.5 - 4.0 mm (0.138 - 1.157 in)

Dimension B

: Apply to end

AWBIA0040ZZ

Tool number

: KV 10112100 (BT-8653-A)

WBIA0484E

Step 1, bolts 11 - 22 only

: 25.1 N·m (2.6 kg-m, 19 ft-lb)

Step 2, bolts 1 - 10 only

: 39.2 N·m (4.0 kg-m, 29 ft-lb)

Step 3, bolts 1 - 10 only

: 60

°degrees rotation 

KBIA0063E

SBIA0280E

CYLINDER BLOCK

EM-81

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• Press in rear oil seal to the position as shown.

10. Install the piston to the connecting rod. Assemble the components in their original positions.
a. Using a snap ring pliers, install the snap ring to the grooves of the piston's rear side. 

• Insert the piston pin snap ring fully into groove. 

b. Install the piston to the connecting rod.

• Using a heat gun, heat the piston [approximately 60

° - 70 C° (140° - 158 °F)] until the piston pin can be

pushed in by hand without excessive force. From the front to the rear, insert the piston pin into the piston

and the connecting rod.

• Assemble so that the front mark on the piston crown and the

oil holes and the cylinder No. on the connecting rod are posi-

tioned as shown.

c. Install the piston pin snap ring into the front of the piston. 

•  Check that the connecting rod moves smoothly.

11. Using a piston ring expander, install the piston rings. Assemble

the components in their original positions.

CAUTION:

Be careful not to damage the piston.

• Position each ring with the gap as shown, referencing the pis-

ton front mark as the starting point.

• Install the top ring and the second ring with the stamped sur-

face facing upward.

12. Install the connecting rod bearings to the connecting rod and the

connecting rod cap. Assemble the components in their original

positions.

• When installing the connecting rod bearings, apply engine oil

to the bearing friction surface (inside). Do not apply oil to the

back surface, but thoroughly clean the back. 

• When installing, align the connecting rod bearing stopper pro-

trusion with the notch of the connecting rod to install. 

• Check the oil holes on the connecting rod and those on the

corresponding bearing are aligned. 

13. Install the piston and connecting rod assembly to the crankshaft. Assemble the components in their origi-

nal positions.

SBIA0281E

PBIC0099E

Stamped mark

: 1K (top ring)
: 2K (second ring)

PBIC0100E

PBIC0266E