Nissan Cube. Manual - part 423

EM-96

< UNIT DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

• Measure the side clearance between connecting rod and crank-

shaft arm with a feeler gauge (A).

• If the measured value exceeds the limit, replace connecting rod,

and measure again. If it still exceeds the limit, replace crankshaft
also.

PISTON TO PISTON PIN OIL CLEARANCE

Piston Pin Hole Diameter 

Measure the inner diameter of piston pin hole with an inside
micrometer (A).

Piston Pin Outer Diameter 

Measure the outer diameter of piston pin with a micrometer (A).

Piston to Piston Pin Oil Clearance

(Piston to piston pin oil clearance) = (Piston pin hole diameter) – (Piston pin outer diameter)

• If oil clearance is out of the standard, replace piston and piston pin assembly. 
• When replacing piston and piston pin assembly. Refer to 

EM-106, "Description"

.

NOTE:
• Piston is available together with piston pin as assembly.
• Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts, no

grades can be selected. (Only grade “0” is available.) 

PISTON RING SIDE CLEARANCE

Standard and Limit

: Refer to 

EM-118, "Cylinder 

Block"

.

PBIC3251J

Standard

: Refer to 

EM-118, "Cylinder Block"

.

PBIC3265J

Standard : 

Refer 

to 

EM-118, "Cylinder Block"

.

PBIC3266J

Standard : 

Refer 

to 

EM-118, "Cylinder Block"

.

CYLINDER BLOCK

EM-97

< UNIT DISASSEMBLY AND ASSEMBLY >

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• Measure the side clearance of piston ring and piston ring groove

with a feeler gauge (A).

• If the measured value exceeds the limit, replace piston ring, and

measure again. If it still exceeds the limit, replace piston also.

PISTON RING END GAP

• Check that cylinder bore inner diameter is within specification. Refer to “PISTON TO CYLINDER BORE

CLEARANCE”.

• Lubricate with new engine oil to piston (1) and piston ring (2), and

then insert (A) piston ring until middle of cylinder (B) with piston,
and measure piston ring end gap with a feeler gauge (C).

• If the measured value exceeds the limit, replace piston ring, and

measure again. If it still exceeds the limit, rebore cylinder and use
oversized piston and piston rings.

CONNECTING ROD BEND AND TORSION

• Check with a connecting rod aligner.

• If it exceeds the limit, replace connecting rod assembly.

CONNECTING ROD BIG END DIAMETER

Standard and Limit

: Refer to 

EM-118, "Cylinder 

Block"

.

PBIC3280J

Standard and Limit

: Refer to 

EM-118, "Cylinder 

Block"

.

PBIC3267J

A

: Bend

B

:  Torsion

C

: Feeler gauge

Limit

: Refer to 

EM-118, "Cylinder Block"

.

PBIC3268J

EM-98

< UNIT DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

• Install connecting rod cap (1) without connecting rod bearing

installed, and tightening connecting rod cap bolts to the specified
torque. Refer to 

EM-87, "Disassembly and Assembly"

.

• Measure the inner diameter of connecting rod big end with an

inside micrometer.

• If out of the standard, replace connecting rod assembly.

CONNECTING ROD BUSHING OIL CLEARANCE

Connecting Rod Bushing Inner Diameter

Measure the inner diameter of connecting rod bushing with an inside
micrometer (A).

Piston Pin Outer Diameter

Measure the outer diameter of piston pin with a micrometer (A).

Connecting Rod Bushing Oil Clearance

(Connecting rod bushing oil clearance) = (Connecting rod bushing inner diameter) – (Piston pin outer diame-
ter)

• If the measured value is out of the standard, replace connecting rod assembly and/or piston and piston pin

assembly.

• If replacing piston and piston pin assembly. Refer to 

EM-106, "Piston"

.

• If replacing connecting rod assembly. Refer to 

EM-107, "Connecting Rod Bearing"

.

CYLINDER BLOCK TOP SURFACE DISTORTION

• Using a scraper, remove gasket on the cylinder block surface, and also remove engine oil, scale, carbon, or

other contamination. 

CAUTION:

Be careful not to allow gasket flakes to enter engine oil or engine coolant passages.

2

: Connecting rod

A

: Example

B

: Measuring direction of inner diameter

Standard : 

Refer 

to 

EM-118, "Cylinder Block"

.

PBIC3269J

Standard : 

Refer 

to 

EM-118, "Cylinder Block"

.

PBIC3270J

Standard : 

Refer 

to 

EM-118, "Cylinder Block"

.

PBIC3266J

Standard and Limit 

: Refer to 

EM-118, "Cylinder Block"

.

CYLINDER BLOCK

EM-99

< UNIT DISASSEMBLY AND ASSEMBLY >

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• Measure the distortion on the cylinder block upper face at some

different points in six directions with a straight edge (A) and feeler
gauge (B).

• If it exceeds the limit, replace cylinder block.

MAIN BEARING HOUSING INNER DIAMETER

• Install main bearing cap without main bearings installed, and tighten main bearing cap mounting bolts to the

specified torque. Refer to 

EM-87, "Disassembly and Assembly"

.

• Measure the inner diameter of main bearing housing with a bore gauge. 
• Measure the position shown in the figure [5 mm (0.20 in)] back-

ward from main bearing housing front side in the 2 directions as
shown in the figure. The smaller one is the measured value.

• If out of the standard, replace cylinder block and main bearing

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

PISTON TO CYLINDER BORE CLEARANCE

Cylinder Bore Inner Diameter

• Using a bore gauge, measure the cylinder bore for wear, out-of-

round and taper at six different points on each cylinder. [(A) and (B)
directions at (C), (D), and (E)] [(A) is in longitudinal direction of
engine]

NOTE:
When determining cylinder bore grade, measure the cylinder bore
(B) direction at (D) position.

• If the measured value exceeds the limit, or if there are scratches and/or seizure on the cylinder inner wall,

replace cylinder block. 
NOTE:
Oversize piston is not provided.

Limit : 

Refer 

to 

EM-118, "Cylinder Block"

.

PBIC3250J

1

: Cylinder block

2

: Main bearing cap

: Engine front

Standard : 

Refer 

to 

EM-118, "Cylinder Block"

.

PBIC4005E

f

: 10 mm (0.39 in)

g

: 60 mm (2.36 in)

h

: 130 mm (5.12 in)

Standard:

Cylinder bore inner diameter 

: Refer to 

EM-118, "Cylinder Block"

.

Limit:

Out-of-round [Difference between (A) and (B)]

Taper [Difference between (C) and (D)]

: Refer to 

EM-118, "Cylinder Block"

.

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