2014 NISSAN TEANA lock

EM-98
< UNIT DISASSEMBLY AND ASSEMBLY >[QR25DE]
CYLINDER BLOCK
• The connecting rod small end grade and piston pin hole (piston
pin) grade are provided only for the parts installed at the plant. For
service parts, no grades can be selected. Only 0 grade is avail-
able.
• Follow the "CONNECTING ROD BUSHING OIL CLEARA NCE (SMALL END)" procedure for the values for
each grade at the plant.
PISTON RING SIDE CLEARANCE
• Measure side clearance of piston ring and piston ring groove using
a feeler gauge. Refer to EM-111, "Standard and Limit"
.
• If out of specification, replac e piston and/or piston ring assembly.
PISTON RING END GAP
• Check if inner diameter of cylinder bore is within specification.
Follow the "PISTON TO CYLINDER BORE CLEARANCE" proce-
dure.
• Insert piston ring (2) to middle of cylinder (B) with piston (1), in the
direction shown (A), and meas ure gap using feeler gauge (C).
Refer to EM-111, "Standard and Limit"
.
• If out of specification, replace piston ring.
CONNECTING ROD BEND AND TORSION
(A) : Oil splash
(B) : Small end diameter grade
(C) : Reference code
(D) : Bearing stopper groove
(E) : Reference code
(F) : Cylinder No.
(G) : Big end diameter grade
AWBIA1279GB
SEM024AA
PBIC3267J
Revision: November 20132014 Altima NAM

CYLINDER BLOCKEM-99
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• Check with connecting rod aligner. Refer to
EM-111, "Standard and
Limit".
• If it exceeds the limit, replace connecting rod assembly.
CONNECTING ROD BEARING (BIG END)
• Install the connecting rod cap (1) without the connecting rod bear-
ing installed. After tightening the connecting rod bolt to the speci-
fied torque, measure the connecting rod big end inner diameter
using an inside micrometer. Refer to EM-111, "Standard and Limit"
.
CONNECTING ROD BUSHING OIL CLEARANCE (SMALL END)
Inner Diameter of Connecting Rod (Small End)
• Measure inner diameter of bushing using suitable tool (A). Refer to
EM-111, "Standard and Limit"
Outer Diameter of Piston Pin
PBIC3268J
(A) : Example
(B) : Measuring direction of inner diameter
(2) : Connecting rod
AWBIA1375ZZ
PBIC3270J
Revision: November 20132014 Altima NAM

EM-100
< UNIT DISASSEMBLY AND ASSEMBLY >[QR25DE]
CYLINDER BLOCK
• Measure outer diameter of piston pin using suitable tool (A). Refer
to EM-111, "Standard and Limit"
.
Piston Pin to Connecting Rod Bushing Clearance (Small End)
(Piston pin to connecting rod bushing clearance (small end)) = (Inner
diameter of connecting rod small end) – (Outer diameter of piston
pin)
• If the measured value exceeds the standard, replace the connect- ing rod assembly and/or piston and piston pin assembly.
• If replacing the piston and piston pin assembly, use the "Piston Selection Table" to select the piston corre-
sponding to the applicable bore grade of the cylinder block to be used. Refer to EM-105, "How to Select Pis-
ton and Bearing".
Factory Installed Parts Grading:
• Service parts apply only to grade 0 (B).
Unit: mm (in)
CYLINDER BLOCK DISTORTION
• Using a scraper, remove gasket on the cylinder block surf ace, and also remove oil, scale, carbon, or other
contamination.
CAUTION:
Be careful not to allow gasket debris to enter the oil or coolant passages.
PBIC3266J
Standard : 0.005 - 0.017 mm (0.0002 - 0.0007 in)
(A) : Oil splash
(B) : Small end diameter grade
(C) : Reference code
(D) : Bearing stopper groove
(E) : Reference code
(F) : Cylinder No.
(G) : Big end diameter grade
AWBIA1279GB
Piston Pin Grade 0 1
Connecting rod small end
inner bushing diameter 2 0 . 0 0 0 - 2 0 . 0 0 6
(0.7874 - 0.7876) 20.006 - 20.012
(0.7876 - 0.7879)
Piston pin outer diameter 19.989 - 19.995
(0.7870 - 0.7872) 19.995 - 20. 001
(0.7872 - 0.7874)
Piston pin bore diameter 19.993 - 19.999
(0.7871- 0.7874) 19.999 - 20.005
(0.7874 - 0.7876)
(A) : Front mark
(B) : Piston pin bore grade
(C) : Piston grade I.D. stamp
(D) : Piston crown I.D. code stamp
(E) : ID mark
AWBIA1373ZZ
Revision: November 20132014 Altima NAM

CYLINDER BLOCKEM-101
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• Measure the distortion on the block upper face at some different
points in 6 directions using a suitable tool (A).
• If out of the distortion limit, replace the cylinder block and lower block they are machined together as an assembly.
INNER DIAMETER OF MAIN BEARING HOUSING
• Install the main bearing caps with the main bearings removed andtighten the bolts to the specified torque. Refer to EM-88, "Disas-
sembly and Assembly".
• Using a bore gauge (A), measure the inner diameter of the main
bearing housing.
• If out of the standard, replace the cylinder block and lower cylinder block assembly.
NOTE:
These components cannot be replaced as a single unit because
they were processed together.
PISTON TO CYLINDER BORE CLEARANCE
Inner Diameter of Cylinder Bore
• Using a bore gauge, measure cylinder bore for wear, out-of-round and taper at 6 different points on each cylinder. (Y and X directions
at C, D, and E). The Y axis is in the longitudinal direction of the
engine.
NOTE:
When determining cylinder bore grade, measure cylinder bore at
(D) position. Refer to EM-111, "Standard and Limit"
.
• If there are scratches and/or seizure on t he cylinder inner wall, hone the inner wall.
Outer Diameter of Piston
• Measure piston skirt diameter using a suitable tool (A). Refer to
EM-111, "Standard and Limit"
.
• Measure point (distance from the top): 37.5 mm (1.476 in).
Piston to Cylinder Bore Clearance
Limit : 0.1 mm (0.004 in)
AWBIA1283GB
Standard : 58.944 - 58.968 mm (2.3206 - 2.3216 in)
AWBIA1284GB
Standard : Refer to EM-111, "Standard and Limit".
Out-of-round : Difference between (Y) and (X).
Taper : Difference between (C) and (E).
Dimension (f) : 10 mm (0.39 in)
Dimension (g) : 60 mm (2.36 in)
Dimension (h) : 120 mm (4.72 in)
AWBIA1360ZZ
PBIC3272J
Revision: November 20132014 Altima NAM

EM-102
< UNIT DISASSEMBLY AND ASSEMBLY >[QR25DE]
CYLINDER BLOCK
• Calculate by outer diameter of piston skirt and i
nner diameter of cylinder (direction X, position B).
(Clearance) = (Inner diameter of cylinde r) – (Outer diameter of piston skirt).
• If it exceeds the limit, replace piston/piston pin assembly.
Reboring Cylinder Bore
1. Cylinder bore size is determined by adding pi ston-to-bore clearance to piston diameter (A).
2. Install lower cylinder block, and tighten to the specif ied torque. Otherwise, cylinder bores may be distorted
in final assembly.
3. Cut cylinder bores.
• When any cylinder needs boring, all ot her cylinders must also be bored.
• Do not cut too much out of cylinder bore at a time . Cut only 0.05 mm (0.0020 in) or so in diameter at
a time.
4. Hone cylinders to obtain specified piston-to-bore clearance.
5. Measure finished cylinder bore for out-of-round and taper.
• Measurement should be done af ter cylinder bore cools down.
OUTER DIAMETER OF CRANKSHAFT JOURNAL
• Measure outer diameter of crankshaft journals using suitable tool
(A).
OUTER DIAMETER OF CRANKSHAFT PIN
• Measure outer diameter of crankshaft pin using a suitable tool.
OUT-OF-ROUND AND TAPER OF CRANKSHAFT
• Measure the dimensions at four different points as shown on eachjournal and pin using a micrometer.
• Out-of-round is indicated by the difference in dimensions between
(X) and (Y) at (A) and (B).
• Taper is indicated by the difference in dimension between (A) and (B) at (X) and (Y). Standard : 0.010 - 0.030 mm (0.0004 - 0.0012 in)
Limit : 0.08 mm (0.0031 in)
Rebored size calculation: D = A + B - C
(D): Bored diameter
(A): Piston diameter as measured
(B): Piston-to-bore clearance (standard value)
(C): Honing allowance 0.02 mm (0.0008 in)
Standard : 54.955 - 54.979 mm (2.1636 - 2.1645 in)
AWBIA1331GB
Standard : 44.956 - 44.974 mm (1.7699 - 1.7706 in)
Standard
Out-of-round (X - Y) : 0.005 mm (0.0002 in)
Taper (A - B) : 0.005 mm (0.0002 in)
AWBIA1368ZZ
Revision: November 20132014 Altima NAM

CYLINDER BLOCKEM-103
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CRANKSHAFT RUNOUT
• Place a V-block on a precise flat table to support the journals on
both ends of the crankshaft.
• Place a dial gauge (A) straight up on the No. 3 journal.
• While rotating the crankshaft, read the movement of the pointer on the dial gauge (A), the total indicator runout reading.
OIL CLEARANCE OF CONNECTING ROD BEARING
Method of Measurement
• Install the connecting rod bearings (2) to the connecting rod (3)
and the cap (1), and tighten the c onnecting rod bolts to the speci-
fied torque. Using a inside micrometer measure the inner diameter
of connecting rod bearing (B).
(Oil clearance) = (Inner diameter of connecting rod bearing) –
(Outer diameter of crankshaft pin)
• If clearance cannot be adjusted within the standard, grind crankshaft pin and use undersized bearing. Refer
to EM-105, "How to Select Piston and Bearing"
.
Method of Using Plastigage
• Remove oil and dust on the crankshaft pin and the surfaces of
each bearing completely.
• Cut the Plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil holes.
• Install the connecting rod bearings to the connecting rod cap, and tighten the connecting rod bolts to the specified torque.
CAUTION:
Do not rotate the crankshaft.
• Remove the connecting rod cap and bearings, and using the scale on the Plastigage bag, measure the Plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the method by calculation.
OIL CLEARANCE OF MAIN BEARING
Method of Measurement
• Install the main bearings to the cylinder block and bearing cap. Measure the main bearing inner diameter with the bearing cap bolt tightened to the specified torque.
(Oil clearance) = (Inner diameter of main beari ng) – (Outer diameter of crankshaft journal)
• If the measured value exceeds the limit, select main bearings referring to the main bearing inner diameter
and crankshaft journal outer diameter, so that t he oil clearance satisfies the standard. Refer to EM-105,
"How to Select Piston and Bearing".
Limit : Less than 0.05 mm (0.002 in)
AWBIA1367ZZ
(A) Example
Standard : 0.035 - 0.045 mm (0.0014 - 0.0018 in)
Limit : 0.10 mm (0.0039 in)
AWBIA1369ZZ
EM142
Standard:
No. 1, 3, and 5 journals : 0.012 - 0.022 mm (0.0005 - 0.0009 in)
No. 2 and 4 journals : 0.018 - 0.028 mm (0.0007 - 0.0011 in)
Limit : 0.1 mm (0.004 in)
Revision: November 20132014 Altima NAM

EM-104
< UNIT DISASSEMBLY AND ASSEMBLY >[QR25DE]
CYLINDER BLOCK
Method of Using Plastigage
• Remove oil and dust on the crankshaft journal and the surfaces of
each bearing completely.
• Cut the Plastigage slightly shorter than the bearing width, and
place it in crankshaft axial direction, avoiding oil holes.
• Tighten the main bearing bolts to the specified torque. CAUTION:
Do not rotate the crankshaft.
• Remove the bearing cap and bearings, and using the scale on the Plastigage bag, measure the Plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the "Method by Calculation".
CRUSH HEIGHT OF MAIN BEARING
• When the bearing cap is removed after being tightened to the specified torque with main bearings installed, the tip end of bearing
must protrude.
• If the standard is not met, replace main bearings.
OUTER DIAMETER OF LOWER CYLINDER BLOCK BOLT
• Perform only with M10 (0.39 in) bolts.
• Measure outer diameters (d1, d2) at two positions as shown.
• Measure d2 at a point within area (A) as shown.
• When the value of d1- d2 exceeds the limit (a large difference in dimensions), replace the bolt with a new one.
OUTER DIAMETER OF CONNECTING ROD BOLT
• Measure outer diameter (d) at position as shown.
• When (d) exceeds the limit (when it becomes thinner), replace the
bolt with a new one.
EM142
Standard : There must be crush height.
SEM502G
Limit : 0.13 mm (0.0051 in)
PBIC0272E
Limit : 7.75 mm (0.3051 in) or less
PBIC0273E
Revision: November 20132014 Altima NAM

HOW TO SELECT PISTON AND BEARINGEM-105
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HOW TO SELECT PISTON AND BEARING
How to Select Piston and BearingINFOID:0000000009460512
DESCRIPTION
*For the service parts, the grade for fitting c
annot be selected between a piston pin and a connecting rod.
(Only 0 grade is available.) The information at the sh ipment from the plant is described as a reference.
• The identification grade stamped on each part is the grade for the dimension measured in new condition.
This grade cannot apply to reused parts.
• For reused or repaired parts, measure the dimens ion accurately. Determine the grade by comparing the
measurement with the values of each selection table.
• For details of the measurement method of each part , the reuse standards, and the selection method of the
selective fitting parts, follow the applicable procedures.
HOW TO SELECT A PISTON
When New Cylinder Block is Used:
• Check the cylinder bore grade on rear left side of cylinder block, and select a piston of the same grade.
• If there is a corrected stamp mark on the cylinder block, use it as a correct reference.
Selection points Selection parts Selection items Selection methods
Between cylinder block to
crankshaft Main bearing
Main bearing grade (bearing
thickness) Determined by match of cylin-
der block bearing housing
grade (inner diameter of hous-
ing) and crankshaft journal
grade (outer diameter of jour-
nal)
Between crankshaft to connect-
ing rod Connecting rod bearing
Connecting rod bearing grade
(bearing thickness) Combining service grades for
connecting rod big end inner di-
ameter and crankshaft pin outer
diameter determine connecting
rod bearing selection
Between cylinder block to pis-
ton Piston and piston pin assembly
(The piston is available together
with piston pin as an assembly) Piston grade (piston outer diam-
eter) Piston grade = cylinder bore
grade (inner diameter of bore)
*Between piston to connecting
rod ———
(A) : Front mark
(B) : Piston pin bore grade
(C) : Piston grade I.D. stamp
(D) : Piston crown I.D. code stamp
(E) : ID marks
AWBIA1373ZZ
SBIA0283E
Revision: November 20132014 Altima NAM