2014 NISSAN TEANA engine oil

EM-68
< REMOVAL AND INSTALLATION >[QR25DE]
TIMING CHAIN
8. Install new front oil seal to front cover. Refer to
EM-71, "Removal and Installation of Front Oil Seal".
9. Install front cover with the following procedure:
a. Install O-rings to cylinder head and cylinder block. CAUTION:
Do not reuse O-rings.
b. Apply a continuous bead of liquid gasket to front cover as shown.
Use Genuine RTV Silicone Seal ant or equivalent. Refer to
GI-21, "Recommended Chemi cal Products and Sealants"
.
CAUTION:
• For bolt holes with marks (5 locations), apply liquid
gasket outside the holes.
• Installation should be done within 5 minutes after applica-
tion of liquid gasket.
• Do not fill the engine with oil for at least 30 minutes after
the components are installed to allow the liquid gasket to
cure.
c. Make sure the mating marks on the timing chain and each sprocket are still aligned. Then install the front cover.
CAUTION:
Do not damage the front oi l seal during installation.
(2) : Camshaft sprocket (INT)
(4) : Timing chain slack guide
(5) : Crankshaft key
(6) : Crankshaft sprocket
(7) : Balancer unit sprocket
(8) : Balancer unit chain tensioner
(9) : Balancer unit timing chain
(10) : Timing chain tension guide
(11) : Camshaft sprocket (EXH)
(A) : Mating mark (Outer groove)
(B) : Pink link
(C) : Mating mark (lug)
(D) : Mating mark (stamp)
(E) : Yellow link
(F) : Pink link
(G) : Mating mark (stamp)
(H) : Mating mark (stamp)
(J) : Yellow link
(K) : Mating mark (Outer groove)
(L) : Pink link
(a) : 35.7 mm (1.406 in)
(b) : 6.0 – 6.5 mm (0.236 – 0.256 in)
(c) : 3.4 – 4.4 mm (0.134 – 0.173 in)
(d) : 179.6 mm (7.07 in)
(e) : 35.5 mm (1.398 in)
(f) : 31.3 mm (1.232 in)
(G) : Dowel pin hole
ALBIA0943ZZ
Revision: November 20132014 Altima NAM

TIMING CHAINEM-69
< REMOVAL AND INSTALLATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
d. Tighten front cover bolts in the numerical order shown.
e. After all bolts are tightened, retighten them to the specified torque.
CAUTION:
Wipe off excess sealant leaking at the surface for installing
the oil pan.
10. Install the chain guide between the camshaft sprockets.
11. Install valve timing control cover. Refer to EM-59, "Valve Timing Control Cover"
.
12. Insert crankshaft pulley by aligning with crankshaft key. • Tap its center with a plastic hammer to insert.
• Do not tap the crankshaft pulley outer diameter.
13. Tighten crankshaft pulley bolt. • Secure crankshaft pulley with tool to tighten the bolt.
• Perform angle tightening with the following procedure:
a. Apply new engine oil to threads and seat surfaces of bolts.
b. Tighten to initial specifications:
c. Apply a paint mark (A) on the front cover, mating with any one of six easy to recognize stamp marks on bolt flange (B).
d. Turn crankshaft pulley bolt an additional 60 degrees +6/-0 degrees.
NOTE:
Check that the assembled unit does not interfere with adjacent
components by turning the crankshaft in the tightening direction.
14. Installation of the remaining components is in the reverse order of removal.Front cover bolts
Bolts 6, 10, 12 : 49 N·m (5.0 kg-m, 36 ft-lb)
Bolts (all remaining) : 12.7 N·m (1.3 kg-m, 9 ft-lb)
(A) : Dowel pin
ALBIA0944ZZ
Crankshaft bolt (1) : 42.1 N·m (4.3 kg-m, 31 ft-lb)
ALBIA0862GB
Revision: November 20132014 Altima NAM

EM-70
< REMOVAL AND INSTALLATION >[QR25DE]
OIL SEAL
OIL SEAL
Removal and Installation
of Valve Oil SealINFOID:0000000009460500
REMOVAL
1. Remove camshaft. Refer to EM-47, "Removal and Installation".
2. Remove valve lifter. Refer to EM-47, "Removal and Installation"
.
3. Rotate crankshaft, and set piston whose oil seal is to removed to top dead center. This prevents valve from dropping inside cylinder.
CAUTION:
When rotating crankshaft, be careful to avoid scarring the front cover with the timing chain.
4. Remove valve collet. • Compress valve spring using Tools. Remove valve collet with
magnet hand.
CAUTION:
• Be careful not to damage valve lifter holes.
• Install Tool (A) in the center of valve spring retainer to
press it.
5. Remove valve spring retainer and valve spring (with valve spring seat). CAUTION:
Do not remove valve spring seat from valve spring.
6. Remove valve oil seal using Tool (A).
INSTALLATION
1. Apply new engine oil to new valve oil seal joint surface and seal lip. Tool number (A) : KV10116200 (J-26336-A)
Tool number (B) : KV10109220 ( — )
Tool number (C) : KV10115900 (J-26336-20)
JPBIA1365ZZ
Tool number : KV10115900 (J-26336-20)
1 : Valve spring retainer
JPBIA4477ZZ
Tool number : KV10107902 (J-38959)
ALBIA0863GB
Revision: November 20132014 Altima NAM

OIL SEALEM-71
< REMOVAL AND INSTALLATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
2. Press in valve oil seal to the position shown using Tool (A).
3. Installation of the remaining components is in the reverse order of removal.
Removal and Installati on of Front Oil SealINFOID:0000000009460501
REMOVAL
1. Remove the RH front wheel. Refer to WT-55, "Adjustment".
2. Remove the fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Removal and
Installation".
3. Remove the drive belt. Refer to EM-19, "Removal and Installation"
.
4. Remove the rear cover plate.
5. Remove crankshaft pulley (1) using the following procedure:
a. Hold the crankshaft pulley (1) using suitable tool (A), then loosen and remove the crankshaft pulley bolt.
b. Attach suitable tool (A) in the M 6 (0.24 in diameter) thread hole
on crankshaft pulley (1), and remove crankshaft pulley.
6. Remove front oil seal from front cover. CAUTION:
Be careful not to damage the front cover.
INSTALLATION
1. Apply new engine oil to new front oil seal lip and install it using a suitable tool.
• Install new oil seal in the direction shown.Oil seal installed height
(H) : 12.1 mm (0.476 in)
Tool number : KV10115600 (J-38958)
ALBIA0864GB
ALBIA0857GB
ALBIA0858GB
(A) : Dust seal lip
(B) : Oil seal lip
: Engine outside
: Engine inside
PBIC3485J
Revision: November 20132014 Altima NAM

EM-72
< REMOVAL AND INSTALLATION >[QR25DE]
OIL SEAL
• Press-fit front oil seal until it is flush with front end surface of
front cover using a suitable drift (A) with outer diameter 56 mm
(2.20 in) and inner diameter 48 mm (1.89 in).
CAUTION:
• Do not reuse oil seal.
• Be careful not to damage front cover or crankshaft.
• Press-fit oil seal straight to avoid causing burrs or tilt-
ing.
• Never touch the grease applied to the oil seal lip.
2. Installation of the remaining components is in the reverse order of removal.
Removal and Installation of Rear Oil SealINFOID:0000000009460502
REMOVAL
1. Remove the engine and transaxle. Refer to EM-84, "Removal and Installation".
2. Separate engine from transaxle.
3. Remove drive plate.
4. Remove rear oil seal using suitable tool. CAUTION:
Be careful not to scratch rear oil seal retainer.
INSTALLATION
1. Apply new engine oil to new rear oil seal and install it using a suitable tool. • Install new oil seal in the direction shown.
ALBIA0865GB
WBIA0204E
(A) : Dust seal lip
(B) : Oil seal lip
: Drive plate side
: Engine front
PBIC3485J
Revision: November 20132014 Altima NAM

CYLINDER HEADEM-75
< REMOVAL AND INSTALLATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
• Replace the cylinder heads bolts with new ones if the size differ-
ence between d1 and d2 exceeds the limit.
• If reduction of outer diameter appears in a position other than d2, use it as d2 point.
INSTALLATION
1. Clean surfaces of cylinder head and cylinder block.
2. Install a new cylinder head gasket. CAUTION:
Do not reuse cylinder head gasket.
3. Install the cylinder head.
4. Follow the steps below to tighten the cylinder head bolts in the numerical order as shown. • Clean threads and seating surfaces of bolts.
• Apply new engine oil to the threads and the seating surfaces of bolts.
CAUTION:
• If cylinder head bolts are re-used, check their ou ter diameters before installation. Follow the
Outer Diameter of Cylinder H ead Bolts measurement procedure.
• Check and confirm the tighte ning angle by using angle
wrench or protractor. Do not judge angle by visual inspec-
tion.
5. Installation of the remaining components is in the reverse order of removal. Limit (d1 - d2) : 0.23 mm (0.0091 in) or more
KBIA0189E
Tool number (A) : KV10112100 (BT-8653-A)
PBIC3208J
Step a : 50 N·m (5.1 kg-m, 37 ft-lb) in order
Step b : 60 ° clockwise in order
Step b : Loosen to 0 N·m in order
Step c : 39.2 N·m (4.0 kg-m, 29 ft-lb) in order
Step d : 75 ° clockwise in order
Step e : 75 ° clockwise in order
: Engine frontAWBIA1325GB
Revision: November 20132014 Altima NAM

EM-76
< REMOVAL AND INSTALLATION >[QR25DE]
CYLINDER HEAD
Disassembly and Assembly
INFOID:0000000009460505
CAUTION:
• When installing camshafts, chain tensioners, oil seals or other sliding parts, lubricate contacting
surfaces with new engine oil.
• Apply new engine oil to threads and seat surf aces when installing the cylinder head, camshaft
sprocket, crankshaft pulley and camshaft bracket.
• Attach tags to valve lifters so all parts are assembled in their original position.
CAUTION:
Read PRECAUTION carefully.
The exhaust valve contains metallic sodium. Therefore, extreme caution must be taken when handling
and disposing of the exhaust valve. Refer to EM-5, "Special Cautions to Ensure the Safe Disposal of
Sodium-filled Exhaust Valves".
DISASSEMBLY
1. Remove the valve lifter.
NOTE:
Confirm installation point to return valve lifter to original location during assembly.
2. Remove valve collet.
1. Valve collet 2. Valve spring retainer 3. Valve spring
4. Valve oil seal 5. Valve guide 6. Cylinder head
7. Valve seat (INT) 8. Valve (INT) 9. Valve (EXH)
10. Valve seat (EXH) 11. Spark plug tube L. Apply thread locking sealant
JPBIA0681GB
Revision: November 20132014 Altima NAM

CYLINDER HEADEM-77
< REMOVAL AND INSTALLATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
• Compress valve spring using Tools. Remove valve collet with
a magnet hand.
CAUTION:
• Be careful not to damage valve lifter holes.
• Install tool (A) in the center of valve spring retainer to press it.
3. Remove valve spring retainer and valve spring (with valve spring seat). CAUTION:
Do not remove valve spring seat from valve spring.
4. Push valve stem to combustion chamber side, and remove valve. • Inspect valve guide clearance before removal. Refer to EM-78, "Inspection After Disassembly"
.
• Confirm installation point to return valve to original location during assembly.
5. Remove valve oil seal using Tool (A).
6. When valve seat must be replaced, refer to EM-78, "Inspection After Disassembly"
.
7. When valve guide must be replaced, refer to EM-78, "Inspection After Disassembly"
.
8. Remove spark plug tubes, if necessary, using suitable tool. CAUTION:
• Be careful not to damage cylinder head.
• Do not remove spark plug tube if not necessary . Once removed, the spark plug tube cannot be
reused because of deforma tion during removal.
ASSEMBLY
1. Install valve guide. Refer to EM-78, "Inspection After Disassembly".
2. Install valve seat. Refer to EM-78, "Inspection After Disassembly"
.
3. Apply new engine oil to new valve oil seal joint surface and seal lip. Tool number (A) : KV10116200 (J-26336-A)
Tool number (B) : KV10109220 ( — )
Tool number (C) : KV10115900 (J-26336-20)
JPBIA1365ZZ
Tool number : KV10115900 (J-26336-20)
(1) : Valve spring retainer
JPBIA4477ZZ
Tool number : KV10107902 (J-38959)
ALBIA0863GB
Revision: November 20132014 Altima NAM