Infiniti G35 (V35) Sedan. Manual — part 629
CYLINDER BLOCK
EM-115
< DISASSEMBLY AND ASSEMBLY >
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DISASSEMBLY
1.
Remove the following parts:
• Oil pans (lower and upper): Refer to
(2WD models) or
(AWD models).
• Front and rear timing chain case: Refer to
.
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-151, "Connecting Rod Bearing"
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
.
• 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:
PBIC2940E
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< 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.
NOTE:
Use TORX socket (size E14) for bolts No.1 to 16.
• Before loosening lower cylinder block bolts, measure the crankshaft end play. Refer to
• Loosen lower cylinder block bolts in the reverse order shown
in the figure in several different steps.
9.
Remove lower cylinder block as follows:
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PBIC0262E
: Engine front
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CYLINDER BLOCK
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< DISASSEMBLY AND ASSEMBLY >
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Screw M8 bolt [pitch: 1.25 mm (0.049 in) length: approx 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.
• Do not tighten bolts too much.
• Do not insert screw driver, this will damage the mating
surface.
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
• Replace washers (2) with new one.
• Tighten each plug as specified below.
: Engine front
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3
: plug
: Engine front
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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)
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< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
3.
Install oil jet.
• 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
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A
: No. 1
B
: No. 2
C
: No. 3
D
: No. 4
F
: Thrust bearing installation position
: Engine front
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: Cylinder block side
D
: Lower cylinder block side
: Engine front
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