NISSAN TEANA 2014 Service Manual

CYLINDER BLOCKEM-93
< UNIT DISASSEMBLY AND ASSEMBLY > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
7. Install the lower cylinder block.
• Apply Silicone RTV Sealant to positions as shown (A and B).
• Use Genuine Silicone RTV Sealant, or equivalent. Refer to GI-
21, "Recommended Chemical Products and Sealants".
CAUTION:
After the Silicone RTV Sealant is applied, the lower cylinder
block installation must be finished within 5 minutes.
NOTE:
Cylinder block and lower cylinder block are machined together. Replace only as a unit. Do not replace
separately.
8. Tighten lower cylinder block bolts in the numerical order as shown and according to the following steps:
a. Apply new engine oil to threads and seat surfaces of the bolts.
b. Tighten bolts to specification using suitable tool and Tool (A). CAUTION:
Check tightening angle. Do not judge angle by visual
inspection.
c. Wipe off completely any protruding Silicone RTV Sealant on rear oil seal installation surface and the exte- rior of engine.
d. Check crankshaft side clearance. Refer to EM-96, "Inspection After Disassembly"
.
e. After installing the bolts, make sure that the crankshaft can be rotated smoothly by hand.
9. Apply new engine oil to new rear oil seal and install it using a suitable tool. • Install new oil seal in the direction shown.Dimension (A) : 4 - 5 mm (0.157 - 0.197 in)
Dimension (B) : Apply to end
AWBIA0040ZZ
KBIA0063E
Step 1, bolts 11 - 22 only : 25.1 N·m (2.6 kg-m, 19 ft-lb)
Step 2, bolts 1 - 10 only : 39.2 N·m (4.0 kg-m, 29 ft-lb)
Step 3, bolts 1 - 10 only : 60 °degrees rotation
Tool number (A) : KV10112100 (BT-8653-A)
(A) : Dust seal lip
(B) : Oil seal lip
: Drive plate side
: Engine front
JPBIA0687ZZ
PBIC3485J
Revision: November 20132014 Altima NAM

EM-94
< UNIT DISASSEMBLY AND ASSEMBLY >[QR25DE]
CYLINDER BLOCK
• Press fit new oil seal straight using a suitable tool (A) to avoid
tilting the seal or causing burrs.
• Press in the new rear oil seal (1) to the position (b) shown.
10. Install the piston to the connecting rod. Assemb le the components in their original positions.
a. Using a snap ring pliers, install the snap ring to the grooves of the piston's rear side.
• Insert the piston pin snap ring fully into groove.
CAUTION:
Do not reuse snap rings.
b. Install the piston to the connecting rod. • Using a heat gun, heat the piston [approximately 60 ° - 70 C ° (140 ° - 158 °F)] until the piston pin can be
pushed in by hand without excessive force. From the front to the rear, insert the piston pin into the piston
and the connecting rod.
• Assemble so that the front mark on the piston crown (A) and the oil holes (B) and the cylinder No. (C) on the connecting rod
are positioned as shown.
c. Install the piston pin snap ring (1 ) into the front of the piston.
• Check that the connecting rod moves smoothly.
11. Using a piston ring expander, install the piston rings. Assemble the components in their original positions.
CAUTION:
Be careful not to damage the piston.
• Position each ring with the gap as shown, referencing the pis-
ton front mark as the starting point.
NOTE:
ALBIA0866GB
(b) : 0 - 0.5 mm (0 - 0.020 in)
(A) : Rear surface of cylinder block
JPBIA3011ZZ
AWBIA1330GB
(A) : Top ring mating
(B) : Front mark
(C) : Second ring mating, oil ring, spacer mating
(D) : Oil ring upper or lower rail gap
AWBIA1277GB
Revision: November 20132014 Altima NAM

CYLINDER BLOCKEM-95
< UNIT DISASSEMBLY AND ASSEMBLY > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
The gap of the upper rail on the oil ring shall face
the direction opposite to that of the lower rail.
• Install the top ring and the second ring with the stamped surface (E) facing upward.
12. Install the connecting rod bearings to the connecting rod and the connecting rod cap. Assemble the components in their original
positions.
• When installing the connecting rod bearings, apply engine oil
to the bearing friction surface (inside). Do not apply oil to the
back surface, but thoroughly clean the back.
• When installing, align the connecting rod bearing stopper pro- trusion (A) with the notch (B) of the connecting rod to install.
• Check the oil holes on the connecting rod and those on the corresponding bearing are aligned.
13. Install the piston and connecting rod assembly using Tool. Assemble the components in their original positions.
• Rotate the crankshaft so the pin corresponding to the connect- ing rod to be installed is at the bottom dead center position.
• Apply engine oil sufficiently to the cylinder bore, piston, and crankshaft pin.
• Match the cylinder position number with the cylinder No. on
the connecting rod for installation.
• Install the piston with the front mark on the piston crown facing the front of the engine using Tool.
CAUTION:
Be careful not to damage the crankshaft pin, resu lting from an interference of the connecting rod
big end.
14. Install the connecting rod caps. Assemble the components in their original positions.
• Match the stamped cylinder number marks (F) on the connect- ing rod with those on the cap to install.
15. Tighten the connecting rod bolts using Tool (A) as follows:
Apply engine oil to the threads and seats of the connecting rod
bolts.
CAUTION:
Check tightening angle. Do not judge angle by visual
inspection. Stamped mark : 2K (second ring)
AWBIA1376ZZ
Tool number : EM03470000 (J-8037)
(A) : Oil splash
(B) : Small end diameter grade
(C) : Reference code
(D) : Bearing stopper groove
(E) : Reference code
(G) : Big end diameter grade
WBIA0485E
AWBIA1279GB
Step 1 : 29.4 N·m (3.0 kg-m, 22 ft-lb)
Step 2 : 0 N·m
Step 3 : 19.6 N·m (2.0 kg-m, 14 lb-ft)
Step 4 : Rotate bolts 90 ° + 0.5 °
JPBIA0688ZZ
Revision: November 20132014 Altima NAM

EM-96
< UNIT DISASSEMBLY AND ASSEMBLY >[QR25DE]
CYLINDER BLOCK
• Check the connecting rod side clearance. Refer to
EM-96, "Inspection After Disassembly".
• After tightening the bolts, make sure that the crankshaft rotates smoothly.
16. Install drive plate (2). • Install drive plate (2), reinforcement plate (3) and pilot con-verter (4) as shown.
• Using a drift with 33 mm (1.30 in) diameter, push pilot con-
verter (4) into the end of the crankshaft (1).
17. Install the knock sensor (1). • Make sure that there is no foreign material on the cylinderblock mating surface or the back surface of the knock sensor.
• Install the knock sensor with the connector (2) facing as shown (A).
• Be sure the knock sensor connector is within 15 ° of centerline
(A).
• Do not tighten the bolts while holding the connector.
• Make sure that the knock sensor does not interfere with other
parts.
CAUTION:
If the knock sensor is droppe d, replace it with new one.
18. Install the crankshaft position sensor (POS).
19. Installation of remaining components is in the reverse order of removal.
Inspection After DisassemblyINFOID:0000000009460511
CRANKSHAFT SIDE CLEARANCE
• Using a dial gauge (A), measure the clearance between the thrust bearings and the crankshaft arm when the crankshaft is moved
fully forward or backward.
• If the measured value exceeds the limit, replace the thrust bear- ings, and measure again. If it still exceeds the limit, replace the
crankshaft.
CONNECTING ROD SIDE CLEARANCE
Tool number : KV10112100 (BT-8653-A)
(A) : Rounded
(B) : Chamfered
AWBIA1374ZZ
: FrontALBIA0873GB
Standard : 0.10 - 0.26 mm (0.0039 - 0.0102 in)
Limit : 0.30 mm (0.0118 in)
AWBIA1281GB
Revision: November 20132014 Altima NAM

CYLINDER BLOCKEM-97
< UNIT DISASSEMBLY AND ASSEMBLY > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
• Measure side clearance between connecting rod and crankshaft
arm using a suitable tool (A).
• If the measured value exceeds the limit, replace the connecting
rod bearings, and measure again. If it still exceeds the limit,
replace the crankshaft also.
PISTON AND PISTON PIN CLEARANCE
Diameter of Pi ston Pin Bore
• Measure the diameter of piston pin bore using an inside microme-
ter. Refer to EM-111, "Standard and Limit"
.
Outer Diameter of Piston Pin
• Measure outer diameter of piston pin using a suitable tool (A).
Refer to EM-111, "Standard and Limit"
.
Piston to Piston Pin Clearance
(Piston pin clearance) = (Piston pin bore diameter) – (Outer diameter
of piston pin)
• If clearance exceeds specification, replace either or both of piston/
piston pin assembly and connecting rod assembly wit h reference to specification of each parts.
• Use the piston selection table to replace piston/piston pin assembly. Refer to EM-105, "How to Select Piston
and Bearing".
• Use the connecting rod bearing selection table to replace connecting rod. Refer to EM-105, "How to Select
Piston and Bearing".
NOTE: Standard : 0.20 - 0.35 mm (0.0079 - 0.0138 in)
Limit : 0.50 mm (0.0197 in)
JPBIA0689ZZ
PBIC0116E
PBIC3266J
(A) : Front mark
(B) : Piston pin bore grade
(C) : Piston grade I.D. stamp
(D) : Piston crown I.D. code stamp
(E) : ID mark
Standard : 0.002 - 0.006 mm (0.0001 - 0.0002 in)AWBIA1373ZZ
Revision: November 20132014 Altima NAM

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
< UNIT DISASSEMBLY AND ASSEMBLY > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
• 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
< UNIT DISASSEMBLY AND ASSEMBLY > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
• 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