2014 NISSAN TEANA engine

EM-32
< REMOVAL AND INSTALLATION >[QR25DE]
INTAKE MANIFOLD
2. If studs were removed, install them and tighten to specification.
3. Tighten in numerical order as shown. CAUTION:
After tightening the five bolts in the order shown, the 1, 6
position designates that the fi rst bolt tightened is to be
retightened to specification.
Electric Throttle Control Actuator
1. Install a new O-ring on the electric throttle control actuator. CAUTION:
Do not reuse electric throttl e control actuator O-ring.
2. Tighten the bolts of electric th rottle control actuator equally and
diagonally in several steps in numerical order as shown.
INSPECTION AFTER INSTALLATION
Make sure there are no fuel leaks at connections as follows:
1. Apply fuel pressure to fuel lines by turning ignition switch ON (with engine stopped). Then check for fuel leaks at connections.
NOTE:
Use mirrors for checking on connections out of the direct line of sight.
2. Start the engine and rev it up and check for fuel leaks at connections.
WARNING:
Do not touch engine immediately after stopping as engine is extremely hot.
Studs : 9.4 N·m (0.96 kg-m, 83 in-lb)
Bolts 1, 2, 3, 4, 5, 6 : 25.0 N·m (2.6 kg-m, 18 ft-lb)
Nuts 4, 5 : 25.0 N·m (2.6 kg-m, 18 ft-lb)
Bolt 7 : 45.0 N·m (4.6 kg-m, 33 ft-lb)
ALBIA0825GB
AWBIA1359ZZ
Revision: November 20132014 Altima NAM

EXHAUST MANIFOLD AND THREE WAY CATALYST
EM-33
< REMOVAL AND INSTALLATION > [QR25DE]
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EXHAUST MANIFOLD AND THREE WAY CATALYST
Exploded ViewINFOID:0000000009460482
Removal and InstallationINFOID:0000000009460483
REMOVAL
1. Remove the engine under cover. Refer to
EXT-17, "Removal and Installation".
2. Remove the exhaust front tube. Refer to EX-5, "Exploded View"
.
3. Remove the front air duct and air cleaner assembly. Refer to EM-29, "Removal and Installation"
.
4. Disconnect the air fuel ratio (A/F) sensor 1 electrical harness connector.
5. Remove the exhaust manifold cover (upper).
6. Remove the air fuel ratio (A/F) sensor 1 (1) using Tools (A), (if necessary).
CAUTION:
• Be careful not to damage air fuel ratio (A/F) sensor.
• Discard any air fuel ratio (A/F) sensor which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; replace with a new
one.
7. Remove the oil level gauge and oil level gauge guide. Refer to EM-36, "Exploded View"
.
8. Remove the exhaust manifold cover (lower front).
1. Cylinder head 2. Exhaust manifold gasket 3. Exhaust manifold cover (upper)
4. Exhaust manifold and three way cat- alyst assembly 5. Exhaust manifold cover (lower
front) 6. Exhaust manifold cover (lower rear)
7. Air fuel ratio (A/F) sensor 1
AWBIA1314GB
Tool numbers : KV991J0050 (J-44626) : KV10117100 (J-36471-A)
ALBIA0919GB
Revision: November 20132014 Altima NAM

EM-34
< REMOVAL AND INSTALLATION >[QR25DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
9. Loosen the exhaust manifold and three way catalyst nuts in the
reverse order as shown.
10. Remove the exhaust manifold and three way catalyst assembly and gasket. Discard the gasket.
11. Remove the exhaust manifold cover (lower rear).
INSPECTION AFTER REMOVAL
Surface Distortion
• Use a reliable straightedge (A) and feeler gauge (B) to check the flatness of exhaust manifold mating surface.
NOTE:
Place the straightedge (A) diagonally and measure in several loca-
tions.
INSTALLATION
Exhaust Manifold
1. Install studs in cylinder head and exhaust manifold (if removed). Then tighten to specification.
CAUTION:
Do not reuse cylinder head or exhaust manifold studs.
2. Install exhaust manifold cover (lower rear) (if removed) and bolts. Then tighten the bolts to specification in the numerical
order shown.
CAUTION:
Do not reuse bolts.
3. Install the exhaust manifold and gasket. Then tighten the nuts to specification in the numerical order shown.
CAUTION:
Do not reuse gasket. : Engine front
AWBIA0559ZZ
Limit : 0.3 mm (0.012 in)
ALBIA0828GB
ALBIA0887GB
: Engine front
AWBIA0560ZZ
Revision: November 20132014 Altima NAM

EM-36
< REMOVAL AND INSTALLATION >[QR25DE]
OIL PAN AND OIL STRAINER
OIL PAN AND OIL STRAINER
Exploded ViewINFOID:0000000009460484
Removal and InstallationINFOID:0000000009460485
REMOVAL
WARNING:
To avoid the danger of being scalded, never dr ain the engine oil when the engine is hot.
1. Drain engine oil. Refer to LU-10, "Changing Engine Oil"
.
2. Remove the oil filter. Refer to LU-11, "Removal and Installation"
.
1. Oil pan, upper 2. Oil filter 3. Front cover
4. O-ring 5. Oil strainer 6. Oil pan, lower
7. Washer 8. Drain plug 9. O-ring
10. Oil level gauge guide 11. Oil level gauge 12. Rear cover plate
A. To Oil pan, lower
AWBIA1622ZZ
Revision: November 20132014 Altima NAM

OIL PAN AND OIL STRAINEREM-37
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3. Remove the front exhaust tube and gaskets. Refer to
EX-5, "Exploded View".
4. Remove the fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Removal and
Installation".
5. Remove oil level gauge (1), oil level gauge guide (2), and O-ring (3).
CAUTION:
Do not reuse O-ring.
6. Disconnect the air fuel ratio sensor 1 electrical harness connector.
7. Remove the front driveshaft (LH) and front driveshaft (RH). Refer to FAX-10, "Removal and Installation
(LH)" and FAX-12, "Removal and Installation (RH)".
8. Remove the connecting rod (LH) and the connecting rod (RH). Refer to FSU-19, "Exploded View"
.
9. Remove the tie rod end from the steering knuckle ( RH) and the tie rod end from the steering knuckle (LH).
Refer to ST-36, "Exploded View"
.
10. Remove the power steering gear bolts and support the power steering gear. Refer to ST-36, "Removal
and Installation".
11. Remove the rear engine mount torque rod bracket. Refer to EM-84, "Removal and Installation"
.
12. Remove the front suspension member for clearance to remove the oil pan. Refer to FSU-20, "Removal
and Installation".
13. Disconnect the A/C compressor electrical harness connector.
14. Remove the drive belt. Refer to EM-19, "Removal and Installation"
.
15. Remove the A/C compressor bolts, position the A/C compressor aside and support. Refer to HA-30,
"COMPRESSOR : Removal and Installation".
16. Remove the lower oil pan bolts in the reverse order as shown, using power tool.
17. Remove the lower oil pan using Tool (A). CAUTION:
Be careful not to damage the mating surfaces.
NOTE:
In areas where the cutter is difficult to use, use a plastic hammer
to lightly tap (1) the cutter where the liquid gasket is applied. Use
a plastic hammer to slide (2) the cutter by tapping on the side.
ALBIA0910GB
ALBIA0830GB
Tool number : KV10111100 (J-37228)
AWBIA1249GB
Revision: November 20132014 Altima NAM

EM-38
< REMOVAL AND INSTALLATION >[QR25DE]
OIL PAN AND OIL STRAINER
18. Remove the oil strainer bolts in the reverse order as shown then
remove the oil strainer.
19. Remove rear cover plate, and four engine-to transaxle bolts, using power tool.
20. Loosen the upper oil pan bolts in the order shown using power tool.
21. Remove upper oil pan using Tool (A). • Remove the three O-rings from the upper oil pan and front
cover.
CAUTION:
Be careful not to damage the mating surfaces.
NOTE:
In areas where the cutter is difficult to use, use a plastic hammer
to lightly tap (1) the cutter where the liquid gasket is applied. Use
a plastic hammer to slide (2) the cutter by tapping on the side.
INSPECTION AFTER REMOVAL
Clean the oil strainer screen to remove any foreign material.
INSTALLATION
1. Apply Genuine Silicone RTV Sealant or equivalent to the upper oil pan at the specified sealant bead diameter (A) as shown.
Refer to GI-21, "Recommended Chemical Products and Seal-
ants".
CAUTION:
• Install two new O-rings in the upper oil pan and a new O- ring in the front cover.
• Do not reuse O-rings.
• Installation should be done within 5 minutes after apply- ing liquid gasket.
• Do not fill the engine with oil for at least 30 minutes after the co mponents are installed to allow
the liquid gasket to cure.
AWBIA1382ZZ
ALBIA0832GB
Tool number : KV10111100 (J-37228)AWBIA1249GB
Sealant bead
diameter (A) : 4.0 - 5.0 mm (0.157 - 0.197 in)
AWBIA1371ZZ
Revision: November 20132014 Altima NAM

OIL PAN AND OIL STRAINEREM-39
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2. Install the upper oil pan to the block and tighten the upper oil pan
bolts to specification in the order shown.
3. Apply Genuine Silicone RTV Sealant or equivalent to the lower oil pan at the specified sealant bead diameter (A) as shown.
Refer to GI-21, "Recommended Chemical Products and Seal-
ants".
CAUTION:
• Installation should be done within 5 minutes after apply-
ing liquid gasket.
• Do not fill the engine with oi l for at least 30 minutes after
the components are installed to allow the liquid gasket to
cure.
4. Install the lower oil pan to the upper oil pan and tighten the lower oil pan bolts to specification in the numerical order shown.
5. Installation of the remaining components is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
Check for engine oil leaks with the engine at operating temperature and running at idle.
All bolts except 18 and 19 : 21.6 N·m (2.2 kg-m, 16.0 ft-
lb)
Bolts 18 and 19 : 8.8 N·m (0.90 kg-m, 78.0 in- lb)
ALBIA0832GB
Sealant bead
diameter (A) : 4.0 - 5.0 mm (0.157 - 0.197 in)ALBIA0834GB
ALBIA0830GB
Revision: November 20132014 Altima NAM

EM-40
< REMOVAL AND INSTALLATION >[QR25DE]
IGNITION COIL
IGNITION COIL
Exploded ViewINFOID:0000000009460486
Removal and InstallationINFOID:0000000009460487
REMOVAL
1. Remove the engine room cover. Refer to
EM-28, "Removal and Installation".
2. Disconnect the harness connector from the ignition coil.
3. Remove the ignition coil. CAUTION:
Do not drop or shock it.
INSTALLATION
Installation is in the reverse order of removal.
1. Ignition coil 2. Spark plug 3. Rocker cover
AWBIA1302GB
Revision: November 20132014 Altima NAM