Nissan Teana J32. Manual - part 499

EM-120

< DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

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 the calculated value is out of the standard, replace piston and piston pin assembly.
• When replacing piston and piston pin assembly, refer to 

EM-129, "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

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

PISTON RING SIDE CLEARANCE

• Measure the side clearance of piston ring (1) and piston ring

groove with a feeler gauge (C).

• 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 the cylinder bore inner diameter is within the specification. Refer to 

EM-143, "Cylinder Block"

.

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

then insert piston ring until middle of cylinder with piston, and mea-
sure the piston ring end gap with a feeler gauge (B).

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

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

CONNECTING ROD BEND AND TORSION

Standard

: Refer to 

EM-143, "Cylinder Block"

.

JPBIA0218ZZ

Standard

: Refer to 

EM-143, "Cylinder Block"

.

A

:  NG

B

:  OK

Standard and limit

: Refer to 

EM-143, "Cylinder Block"

.

JPBIA0219ZZ

A

: Press-fit

C

: Measuring point

Standard and limit

: Refer to 

EM-143, "Cylinder Block"

.

JPBIA0220ZZ

CYLINDER BLOCK

EM-121

< DISASSEMBLY AND ASSEMBLY >

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

• Check with a connecting rod aligner.

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

CONNECTING ROD BIG END DIAMETER

• Install connecting rod bearing cap without installing connecting rod

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

EM-110, "Disassembly and Assembly"

 for the

tightening procedure.

• 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

A

:  Bend

B

:  Torsion

C

: Feeler gauge

Bend limit

: Refer to 

EM-143, "Cylinder Block"

.

Torsion limit

JPBIA0221ZZ

1

: Connecting rod

Standard

: Refer to 

EM-143, "Cylinder Block"

.

JPBIA0222ZZ

Standard

: Refer to 

EM-143, "Cylinder Block"

.

JPBIA0223ZZ

EM-122

< DISASSEMBLY AND ASSEMBLY >

CYLINDER BLOCK

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 calculated value exceeds the limit, replace connecting rod assembly and/or piston and piston pin

assembly.

• If replacing piston and piston pin assembly, refer to 

EM-129, "Description"

.

• If replacing connecting rod assembly, refer to 

EM-130,

"Connecting Rod Bearing"

 to select the connecting rod bearing.

Factory installed parts grading:

• Service parts apply only to grade “0”.
- VQ25DE

- VQ35DE

Standard

: Refer to 

EM-143, "Cylinder Block"

.

JPBIA0218ZZ

Standard and limit

: Refer to 

EM-143, "Cylinder Block"

.

A

:  Sample  codes

B

: Bearing stopper groove

C

: Small-end diameter grade

D

: Standard stamp

E

: Weight grade

F

: Cylinder No.

G

: Management code

H

: Front mark

I

: Management code

JPBIA0208ZZ

A

: Piston grade number

B

: Front mark

C

: Piston pin grade number

D

: Identification code

JPBIA2198ZZ

A

: Piston grade number

B

: Front mark

C

: Piston pin grade number

D

: Identification code

JPBIA2199ZZ

CYLINDER BLOCK

EM-123

< DISASSEMBLY AND ASSEMBLY >

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

Unit: mm (in)

*: After installing in connecting rod

CYLINDER BLOCK 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.

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

different points in six directions (C), (D), (E), (F), (G) and (H) with a
straightedge (A) and a feeler gauge (B).

• If it exceeds the limit, replace cylinder block.

MAIN BEARING HOUSING INNER DIAMETER

• Install main bearing caps (2) and main bearing beam without

installing main bearings, and tighten main bearing cap bolts to the
specified torque. Refer to 

EM-110, "Disassembly and Assembly"

for the tightening procedure.

• Measure the inner diameter of main bearing housing with a bore

gauge.

• If out of the standard, replace cylinder block (1) and main bearing

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

PISTON TO CYLINDER BORE CLEARANCE

Cylinder Bore inner Diameter 

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

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

Grade

0

1

Connecting rod bushing inner diameter *

22.000 - 22.006

(0.8661 - 0.8664)

22.006 - 22.012

(0.8664 - 0.8666)

Piston pin hole diameter

21.993 - 21.999

(0.8659 - 0.8661)

21.999 - 22. 005

(0.8661 - 0.8663)

Piston pin outer diameter

21.989 - 21.995

(0.8657 - 0.8659)

21.995 - 22.001

(0.8659 - 0.8662)

Limit

: Refer to 

EM-143, "Cylinder Block"

.

JPBIA0224ZZ

Standard

: Refer to 

EM-143, "Cylinder Block"

.

JPBIA0225ZZ

f

: 10 mm (0.39 in)

g

: 60 mm (2.36 in)

h

: 120 mm (4.72 in)

Standard and limit

: Refer to 

EM-143, "Cylinder Block"

.

JPBIA0226ZZ