Nissan Cube. Manual - part 421

 

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Nissan Cube. Manual - part 421

 

 

EM-88

< UNIT DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

8.

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

EM-95, "Inspection"

.

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

CAUTION:

• When removing piston rings, be careful not to damage

the piston.

• Be careful not to damage piston rings by expanding

them excessively.

9.

Remove piston from connecting rod with the following procedure: 

a.

Using 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 18
mm (0.71 in).

10. Remove main bearing cap bolts.

• Measure crankshaft end play before loosening main bearing cap bolts. Refer to 

EM-95, "Inspection"

.

PBIC3233J

PBIC3230J

PBIC3231J

PBIC0262E

CYLINDER BLOCK

EM-89

< UNIT DISASSEMBLY AND ASSEMBLY >

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• Loosen and remove main bearing cap bolts in the order of 10

to 1 as shown in the figure.

• Use TORX socket.

11. Remove main bearing caps.

• Tap main bearing caps lightly with a plastic hammer for removal. 

CAUTION:

Be careful not to damage the mounting surface.

12. Remove crankshaft.

CAUTION:

• Be careful not to damage or deform signal plate (1)

mounted on rear end of crankshaft (A).

• When setting crankshaft on a flat floor surface, use a

block of wood to avoid interference between signal plate
and the floor surface.

• Never remove signal plate unless it is necessary to do so.
NOTE:
When removing or installing signal plate, use TORX socket.

13. Pull rear oil seal out from rear end of crankshaft.
14. Remove main bearings and thrust bearings from cylinder block and main bearing caps.

CAUTION:

Identify installation positions, and store them without mixing them up.

ASSEMBLY

CAUTION:

Do not reuse O-rings or washers. 
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 liquid gasket to the thread of water drain plug (4).

Use Genuine RTV Silicon Sealant or equivalent. Refer to

GI-22, "Recommended Chemical Products and Sealants"

.

• Apply sealant to the thread of plug (1).

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

GI-22, "Recommended Chemical

Products and Sealants"

.

CAUTION:

Do not reuse washers. 
NOTE:
Do not apply liquid gasket or high strength thread locking sealant to the plug (3).

: Engine front

PBIC3235J

PBIC3234J

2

:  Washer

: Engine front

PBIC3999E

EM-90

< UNIT DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

• Tighten each plug as specified below.

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 and main bearing cap.

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 paying attention to the direction.
• Before installing main bearings, apply new engine oil to the bearing surface (inside). Do not apply new

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

• When installing, align main bearing to the center position of cylinder block and main bearing cap.
• The difference (A) between main bearing (upper) (1) and main

bearing (lower) (3) should be 0.85 mm (0.0335 in) or less
when installing.

• Ensure the oil holes on cylinder block and oil holes (A) on the

main bearings (1) are aligned.

4.

Install signal plate to crankshaft if removed.

a.

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

b.

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

Part

Washer

Tightening torque

1

Yes

54.0 N·m (5.5 kg-m, 40 ft-lb)

3

No

19.6 N·m (2.0 kg-m, 14 ft-lb)

4

No

9.8 N·m (1.0 kg-m, 87 in-lb)

: Engine front

PBIC3258J

2

: Cylinder block

4

: Main bearing cap

PBIC3237J

PBIC3236J

CYLINDER BLOCK

EM-91

< UNIT DISASSEMBLY AND ASSEMBLY >

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c.

Position crankshaft (2) and signal plate (1) using a dowel pin
(service part), and tighten mounting bolts in numerical order as
shown in the figure using TORX socket.

NOTE:
Dowel pin of crankshaft and signal plate is provided as a set for
each.

d.

Tighten mounting bolts in numerical order as shown in the figure
again.

e.

Remove dowel pin. (service parts)

CAUTION:

Be sure to remove dowel pin.

5.

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

6.

Install main bearing caps with the following procedure:

a.

Install main bearing caps referring to the journal No. stamp (A)
and front mark (B) as shown in the figure. 

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

b.

Tighten main bearing cap bolts in the order of 1 to 10 as shown
in the figure with the following procedure:

i.

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

ii.

Tighten main bearing cap bolts.

iii.

Turn main bearing cap bolts 60 degrees clockwise (angle tightening) in order from No. 1 to 10 in the fig-
ure.

CAUTION:

Confirm the tightening angle by using an angle wrench
[SST: KV10112100 (BT8653-A)] (A) or protractor. Never
judge by visual inspection without the tool. 

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

EM-95, "Inspection"

.

7.

Install piston to connecting rod with the following procedure: 

A

: Dowel pin hole

: Engine front

PBIC3238J

PBIC3239J

: Engine front

: 34.3 N·m (3.5 kg-m, 25 ft-lb)

PBIC3235J

PBIC3240J

 

 

 

 

 

 

 

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