Nissan Qashqai (2007-2010). Manual — part 37

EM-96

< DISASSEMBLY AND ASSEMBLY >

[HR16DE]

CYLINDER BLOCK

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 eyes.

2.

Install water drain plug (1) to cylinder block as shown in the fig-
ure.

Use Genuine Liquid Gasket or equivalent.

3.

Install main bearings and thrust bearings with the following procedure:

a.

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

b.

Install thrust bearings to the both sides of the No. 3 journal hous-
ing (B) on cylinder block.

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

arm (outside).

c.

Install the main bearings (1) paying attention to the direction.
• Install the one with oil holes (A) onto cylinder block and the

one without oil holes onto main bearing cap.

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

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

• Ensure the oil holes on cylinder block and those on the corre-

sponding bearing are aligned.

• Install the main bearing in the position shown in the figure.

NOTE:
Install the main bearing in the center position with the following
dimension. For service operation, the center position can be
checked visually.

: Engine front

PBIC3742E

: Engine front

PBIC3258J

PBIC3746E

1

: Cylinder block

2

: Main bearing (upper)

3

: Main bearing (lower)

4

: Main bearing cap

: Engine front

PBIC3747E

Journal position

No. 1

No. 2

No. 3

No. 4

No. 5

CYLINDER BLOCK

EM-97

< DISASSEMBLY AND ASSEMBLY >

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CAUTION:

Dimension L1 of journal No. 3 is the distance from the housing base end surface (bulk) (not the
distance from the thrust bearing mounting end surface).

4.

Install signal plate to crankshaft if removed.

a.

Set the signal plate (1) with the flange facing toward the counter-
weight side (engine front side) to the crankshaft rear surface.

b.

After positioning crankshaft and signal plate with positioning
dowel pin, tighten bolt.
NOTE:
Dowel pin of crankshaft and signal plate is provided as a set for
each.

c.

Remove dowel pin.

CAUTION:

Be sure to remove dowel pin.

5.

Install crankshaft to cylinder block.
• Make sure that crankshaft turns smoothly by hand.

CAUTION:

Never install rear oil seal yet.

6.

Install main bearing caps.
• Install the main bearing cap while referring to the front mark

(B) and the journal number stamp (A).

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

7.

Tighten main bearing cap bolts in numerical order shown in the
figure with the following steps.

a.

Apply new engine oil to threads and seat surfaces of the mount-
ing bolts.

b.

Tighten main bearing cap bolts.

L1 [Unit: mm (in)]

1.65–2.05 1.25–1.65

2.30–2.70

1.25–1.65

1.60–2.00

(0.065-0.081)

(0.049-0.065)

(0.091-0.106)

(0.049-0.065)

(0.063-0.079)

L2 [Unit: mm (in)]

1.30–1.70

1.30–1.70

2.30–2.70

1.30–1.70

1.30–1.70

(0.051-0.067)

(0.051-0.067)

(0.091-0.106)

(0.051-0.067)

(0.051-0.067)

A

: Dowel pin hole

: Engine front

PBIC3748E

PBIC3749E

: Engine front

: 32.4 N·m (3.3 kg-m, 24 ft-lb)

PBIC3744E

EM-98

< DISASSEMBLY AND ASSEMBLY >

[HR16DE]

CYLINDER BLOCK

c.

Turn main bearing cap bolts 60 degrees clockwise (angle tight-
ening) in numerical order shown in the figure.

CAUTION:

Check and confirm the tightening angle by using the angle
wrench [SST: KV10112100] (A) or protractor. Avoid judg-
ment by visual inspection without the tool.

• After installing the mounting bolts, make sure that crankshaft can be rotated smoothly by hand.
• Check crankshaft end play. Refer to

EM-101, "Inspection"

.

8.

Install piston to connecting rod with the following procedure:

a.

Set so that the front mark (A) on the piston head and the cylin-
der number (C) are in the position shown in the figure.

NOTE:
The symbols without notes are for management.

b.

Press-fit the piston pin using the piston pin press stand (SST).

CAUTION:

Press-fit the piston so as not to damage it.
NOTE:
The joint between the connecting rod and the piston pin is a
press fit.

PBIC3750E

B

: Oil hole

D

: Connecting rod big end grade

JPBIA0537ZZ

A

: Drift [KV10109730]

B

: Center cap [KV10110310]

C

: Press stand [ST13030020]

D

: Center shaft [KV10114120]

E

: Spring [ST13030030]

F

: For detail

PBIC5271J

CYLINDER BLOCK

EM-99

< DISASSEMBLY AND ASSEMBLY >

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• Press-fit the piston pin (2) from piston surface “A” to the depth

of 2.35 mm (0.092 in).

• After finishing work, make sure that the piston (3) moves

freely.

9.

Using a piston ring expander (commercial service tool), install piston rings.

CAUTION:

• Be careful not to damage piston.
• Be careful not to damage piston rings by expanding them excessively.
• Position each ring with the gap as shown in the figure referring

to the piston front mark (B).

• Install second ring with the stamped mark (E) facing upward.

10. Install connecting rod bearings to connecting rod and connecting rod cap.

• When installing connecting rod bearings, apply new engine oil to the bearing surface (inside). Do not

apply engine oil to the back surface, but thoroughly clean it.

• Install the bearing in the center position.

NOTE:
There is no stopper tab.

• Make sure that the oil holes on connecting rod and connecting rod bearing are aligned.
• Install the connecting rod in the dimension shown in the figure.

NOTE:
Install the connecting rod bearing in the center position with the dimension shown in the figure. For ser-
vice operation, the center position can be checked visually.

11. Install piston and connecting rod assembly to crankshaft.

• Position crankshaft pin corresponding to connecting rod to be installed onto the bottom dead center.
• Apply new engine oil sufficiently to the cylinder bore, piston and crankshaft pin.
• Match the cylinder position with the cylinder number on connecting rod to install.

1

: Connecting rod

: Press-fit direction

PBIC3751E

A

: Oil ring upper or lower rail gap (either of them)

C

: Second ring and oil ring spacer gap

D

: Top ring gap

Stamped mark:

Second ring

: R

PBIC3588J

1

: Connecting rod

2

: Connecting rod bearing (upper)

3

: Connecting rod bearing (lower)

4

: Connecting rod cap

: Engine front

Dimension “A”

: 1.7 - 2.1 mm (0.067 - 0.083 in)

PBIC4169E