Nissan Teana J32. Manual - part 497

EM-112

< DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

• Loosen main bearing cap bolts in the reverse order shown in

the figure in several different steps.

10. Remove main bearing beam.

11. Remove main bearing caps.

CAUTION:

Be careful not to drop main bearing, and to scratch the sur-
face.
• Using main bearing cap bolts, remove main bearing cap while

shaking it back-and-forth.

12. Remove crankshaft.
13. Remove main bearings and thrust bearings from cylinder block and main bearing caps.

CAUTION:

• Be careful not to drop main bearing, and to scratch the surface.
• Identify installation positions, and store them without mixing them up.

14. Remove oil jet. (VQ35DE)

ASSEMBLY

1.

Fully air-blow engine coolant and engine oil passages in cylinder block, cylinder bore and crankcase to
remove any foreign material.

CAUTION:

Use a goggles to protect your eye.

: Engine front

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EMQ0195D

CYLINDER BLOCK

EM-113

< DISASSEMBLY AND ASSEMBLY >

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2.

Install each plug to cylinder block as shown in the figure.

• Apply sealant to the thread of water drain plug (A).

Use Genuine Liquid Gasket or equivalent.

• Apply sealant to the thread of connector bolt (D).

Use Genuine Liquid Gasket or equivalent.

• Apply sealant to the thread of plug (C).

Use high strength thread locking sealant or equivalent.

• Replace washers with new one.

• Tighten each plug and connector bolt as specified below.

3.

Install oil jet. (VQ35DE)
• Insert oil jet dowel pin (A) into cylinder block dowel pin hole,

and tighten mounting bolts.

4.

Install main bearings and thrust bearings as follows:

CAUTION:

Be careful not to drop main bearing, and to scratch the surface.

a.

Remove dust, dirt, and engine oil on bearing mating surfaces of cylinder block and main bearing caps.

B

: Water drain plug

PBIC2487E

Part

Washer

Tightening torque

A

Yes

62.0 N·m (6.3 kg-m, 46 ft-lb)

B

No

9.8 N·m (1.0 kg-m, 87 in-lb)

C

Yes

62.0 N·m (6.3 kg-m, 46 ft-lb)

D

No

39.2 N·m (4.0 kg-m, 29 ft-lb)

: Engine front

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EM-114

< DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

b.

Install thrust bearings (1) to the both sides of the No. 3 journal
housing on cylinder block and main bearing cap.

• Install thrust bearings with the oil groove (E) facing crankshaft

arm (outside). 

• Install thrust bearing with a projection on one end on cylinder block, and thrust bearing with a projection

at center on main bearing cap. Align each projection with mating notch.

c.

Install main bearings paying attention to the direction.
• Main bearing with oil hole (B) and groove (C) goes on cylinder

block. The one without them goes on main bearing cap.

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

surface (inside). Do not apply engine oil to the back surface,
but thoroughly clean it.

• When installing, align main bearing stopper protrusion to cut-

out of cylinder block and main bearing caps.

• Ensure the oil holes on cylinder block and those on the corresponding bearing are aligned.

5.

Install crankshaft to cylinder block.
• While turning crankshaft by hand, check that it turns smoothly. 

6.

Install main bearing caps.
• Main bearing caps are identified by identification mark cast on

them. For installation, face front mark (E) to front side.

NOTE:
Main bearing cap cannot be replaced as a single part, because it
is machined together with cylinder block.

7.

Install main bearing beam.
• Install main bearing beam with front mark facing downward (oil pan side).
• Install main bearing beam with front mark facing front of the

engine.

A

: No. 1

B

: No. 2

C

: No. 3

D

: No. 4

F

: Thrust bearing installation position

: Engine front

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A

: Cylinder block side

D

: Main bearing cap side

: Engine front

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A

: No. 1

B

: No. 2

C

: No. 3

D

: No. 4

: Engine front

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CYLINDER BLOCK

EM-115

< DISASSEMBLY AND ASSEMBLY >

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8.

Install main bearing cap bolts in numerical order as shown in the
figure as follows:

a.

Inspect the outer diameter of main bearing cap bolt. Refer to

EM-119, "Inspection"

.

b.

Apply new engine oil to threads and seat surfaces of main bear-
ing cap bolts.

c.

Tighten main bearing cap bolts in several different steps.

d.

Turn all main bearing cap bolts 90 degrees clockwise (angle tightening).

CAUTION:

Use the angle wrench [SST: KV10112100 (BT8653-A)] to
check tightening angle. Never make judgment by visual
inspection. 
• After installing main bearing cap bolts, check that crankshaft

can be rotated smoothly by hand.

• Check the crankshaft end play. Refer to 

EM-119, "Inspection"

.

9.

Install piston to connecting rod as follows:

a.

Using snap ring pliers, install new snap ring to the groove of piston rear side. 
• Insert it fully into groove to install.

b.

Install piston to connecting rod.
• Using an industrial drier or similar tool, heat piston until piston pin can be pushed in by hand without

excess force [approximately 60 to 70

°

C (140 to 158

°

F)]. From the front to the rear, insert piston pin into

piston and connecting rod.

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

cylinder number on connecting rod are positioned as shown in
the figure.

c.

Install new snap ring to the groove of the piston front side. 
• Insert it fully into groove to install.
• After installing, check that connecting rod moves smoothly.

10. Using a piston ring expander (commercial service tool) (A),

install piston rings.

CAUTION:

• When installing piston rings, be careful not to damage

piston.

• Be careful not to damage piston rings by expending them

excessively.

: Engine front

: 35.3 N·m (3.6 kg-m, 26 ft-lb)

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PBIC0921E

SEM838F

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