Infiniti EX35. Manual - part 729

 

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Infiniti EX35. Manual - part 729

 

 

CYLINDER BLOCK

EM-115

< DISASSEMBLY AND ASSEMBLY >

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Disassembly and Assembly

INFOID:0000000003139148

DISASSEMBLY

1.

Remove the following parts:
• Oil pans (lower and upper): Refer to 

EM-97, "2WD : Exploded View"

 (2WD models) or 

EM-100, "AWD :

Exploded View"

 (AWD models).

• Front and rear timing chain case: Refer to 

EM-50, "Exploded View"

 and 

EM-92, "Exploded View"

.

• Cylinder head: Refer to 

EM-104, "Exploded View"

.

2.

Remove knock sensor.

CAUTION:

Carefully handle sensor avoiding shocks.

3.

Remove baffle plate from lower cylinder block.

4.

Remove piston and connecting rod assembly with the following procedure:
• Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer to

EM-144, "Cylinder Block"

.

CAUTION:

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

a.

Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.

b.

Remove connecting rod bearing cap.

c.

Using a hammer handle or similar tool, push piston and connect-
ing rod assembly out to the cylinder head side.

CAUTION:

Be careful not to damage the cylinder wall and crankshaft
pin, resulting from an interference of the connecting rod big
end.

5.

Remove connecting rod bearings from connecting rod and connecting rod bearing cap.

CAUTION:

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

6.

Remove piston rings from piston.
• Before removing piston rings, check the piston ring side clearance. Refer to 

EM-144, "Cylinder Block"

.

• Use a piston ring expander (commercial service tool) (A).

CAUTION:

• When removing piston rings, be careful not to damage

piston.

• Be careful not to damage piston rings by expanding them

excessively.

7.

Remove piston from connecting rod as follows: 

: Crankshaft side

Refer to 

GI-4, "Components"

 for symbols in the figure.

PBIC2940E

JPBIA0194ZZ

EM-116

< DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

a.

Using a snap ring pliers (A), remove snap rings.

b.

Heat piston to 60 to 70

°

C (140 to 158

°

F) with an industrial use

drier (A) or equivalent.

c.

Push out piston pin with stick of outer diameter approximately 20
mm (0.79 in).

8.

Remove lower cylinder block bolts.
• Before loosening lower cylinder block bolts, measure the crankshaft end play. Refer to 

EM-144,

"Cylinder Block"

.

• Loosen lower cylinder block bolts in the reverse order shown

in the figure in several different steps.

9.

Remove lower cylinder block as follows:

JPBIA0195ZZ

JPBIA0196ZZ

PBIC0262E

: Engine front

JPBIA0197ZZ

CYLINDER BLOCK

EM-117

< DISASSEMBLY AND ASSEMBLY >

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Screw M8 bolt [pitch: 1.25 mm (0.0492 in) length: approximately
50 mm (1.97 in)] into bolt holes (A). Then equally tighten each
bolt, and remove lower cylinder block.

CAUTION:

• Be careful not to damage the mounting surfaces.
• Never tighten bolts too much.
• Never insert screw driver, this will damage the mating sur-

face.

10. Remove crankshaft.
11. Pull rear oil seal out from rear end of crankshaft.

12. Remove main bearings and thrust bearings from cylinder block and lower cylinder block.

CAUTION:

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

13. Remove oil jet.

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.

2.

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

• Apply sealant to the thread of water drain plugs (1), (4).

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-15, "Recommended Chemical Products and Sealants"

.

• Apply sealant to the thread of plugs.

Use Genuine high strength thread locking sealant or
equivalent. Refer to 

GI-15, "Recommended Chemical

Products and Sealants"

.

• Replace washers (2) with new one.

• Tighten each plug as specified below.

3.

Install oil jet.

: Engine front

JPBIA0414ZZ

3

:  Plug

: Engine front

JPBIA0191ZZ

Part

Washer

Tightening torque

1

No

19.6 N·m (2.0 kg-m, 14 ft-lb)

3

Yes

78.0 N·m (8.0 kg-m, 58 ft-lb)

4

Yes

12.3 N·m (1.3 kg-m, 9 ft-lb)

EM-118

< DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

• 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 lower cylinder block.

b.

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

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

arm (outside). 

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 lower cylinder block.

• 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 lower cylinder block.

• 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 lower cylinder block.
NOTE:
Lower cylinder block cannot be replaced as a single part, because it is machined together with cylinder
block.

: Engine front

JPBIA0198ZZ

A

:  No.  1

B

:  No.  2

C

:  No.  3

D

:  No.  4

F

: Thrust bearing installation position

: Engine front

JPBIA0199ZZ

A

: Cylinder block side

D

: Lower cylinder block side

: Engine front

JPBIA0200ZZ

 

 

 

 

 

 

 

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