2014 NISSAN TEANA crank

EM-64
< REMOVAL AND INSTALLATION >[QR25DE]
TIMING CHAIN
• Plunger stopper tab can be pushed up to release (coaxial
structure with lever).
b. Insert the stopper pin into the tensioner body hole to hold the lever and keep tab released.
NOTE:
Allen wrench [2.5 mm (0.098)] is used for a stopper pin as an
example.
c. Insert plunger into tensioner body by pressing slack guide.
d. Keep slack the guide pressed and hold it by pushing the stopper pin through the lever hole and body hole.
e. Remove the bolts and remove the timing chain tensioner (pri- mary).
f. Remove the timing chain. CAUTION:
Do not rotate the crankshaft or camshafts while the timing chain is removed. It can cause damage
to the valve and piston.
13. Remove the camshaft sprockets using the following procedure:
a. Secure hexagonal part of the camshaft with a wrench and loosen the camshaft sprocket bolt.
b. Remove the camshaft sprocket bolt and camshaft sprockets for both camshafts.
14. Remove the chain slack guide, tension guide, and oil pump drive spacer.
PBIC2107E
PBIC2108E
ALBIA0844GB
Revision: November 20132014 Altima NAM

TIMING CHAINEM-65
< REMOVAL AND INSTALLATION > [QR25DE]
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15. Press stopper tab (A) in the direction shown to push the timing
chain slack guide (B) toward timing chain tensioner (1) for the
balancer unit.
• The slack guide (B) is released by pressing the stopper tab
(A). As a result, the slack guide (B) can be moved.
16. Insert stopper pin (D) into tensioner body hole (C) to secure tim- ing chain slack guide (B).
NOTE:
Use a hard metal pin with a diameter of approximately 1.2 mm
(0.047 in) as a stopper pin.
17. Remove timing chain tensioner (1) for balancer unit.
18. Secure width across flats of the balancer unit LH side shaft using a suitable tool. Loosen the balancer unit sprocket bolt.
19. Remove balancer unit timing chain, balancer unit sprocket and crankshaft sprocket.
20. Loosen bolts in the reverse order shown, and remove balancer unit.
CAUTION:
• Do not disassemble balancer unit.
INSPECTION AFTER REMOVAL
Timing Chain
Check the timing chain for cracks or excessive wear. If a defect is
found, replace the timing chain.
Balancer Unit Bo lt Outer Diameter
PBIC5314E
: Engine front
AWBIA1380ZZ
PBIC0282E
Revision: November 20132014 Altima NAM

EM-66
< REMOVAL AND INSTALLATION >[QR25DE]
TIMING CHAIN
• Measure outer diameters (d1, d2)
at the two positions as shown.
• Measure d2 within the range (A).
• If the value difference (d1 - d2) exceeds the limit, replace the bal-
ancer unit bolt with a new one.
INSTALLATION
1. Make sure the crankshaft key points straight up.
2. Install the balancer unit and tighten the bolts in the numerical order as shown:
CAUTION:
• When reusing a bolt, check its outer diameter before installation. Follow the Balan cer Unit Bolt Outer Diameter
procedure.
• Apply new engine oil to threads and seating surfaces of bolts.
• Check tightening angle with an angle wrench (A) or a pro- tractor. Do not make judgme nt by visual check alone.
3. Install the crankshaft sprocket (1) and timing chain (2) for the balancer unit.
• Make sure that the crankshaft sprocket (1) is positioned with
mating marks (A) on the block and sprocket meeting at the
top.
• Install it by lining up mating marks on each sprocket (A), (C) and timing chain (B), (D).
• (B): Pink link
• (D): Yellow link Limit : 0.15 mm (0. 0059 in) or more
KBIA0126E
: Engine front
AWBIA1324GB
Tool number : KV10112100 (BT-8653-A)
Step 1 Bolts 1-5 : 42 N·m (4.3 kg-m, 31 ft-lb)
Bolt 6 : 36 N·m (3.7 kg-m, 27 ft-lb)
Step 2 Bolts 1-5 : 120
° + 5 °
Bolt 6 : 90 ° + 5 °
Step 3 Loosen in reverse order : 0 N·m (0 kg-m, 0 ft-lb)
Step 4 Bolts 1-5 : 42 N·m (4.3 kg-m, 31 ft-lb)
Bolt 6 : 36 N·m (3.7 kg-m, 27 ft-lb)
Step 5 Bolts 1-5 : 120
° + 5 °
Bolt 6 : 90 ° + 5 °
ALBIA0201ZZ
ALBIA0860GB
Revision: November 20132014 Altima NAM

TIMING CHAINEM-67
< REMOVAL AND INSTALLATION > [QR25DE]
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4. Install timing chain tensioner for balancer unit (1).
• Compress the plunger, insert a stopper pin (A), and then installthe tensioner for the balancer unit.
• Do not pull out ( ) the stopper pin until after installing the tim- ing chain tensioner for balancer unit.
• Check matching mark position of balancer unit drive chain and
each sprocket again.
5. Install camshaft sprockets. • Install them by lining up the mating marks on each camshaft
sprocket (B) with the ones painted on the timing chain (A) dur-
ing removal.
• Before installation of chain tensioner, it is possible to re-match
the marks on timing chain with the ones on each sprocket.
CAUTION:
• Aligned mating marks could slip. Therefore, after match-
ing them, hold the timing chain in place by hand.
• Before and after installing chain tensioner, check again to
make sure that mating marks have not slipped.
6. Install chain tensioner using the following procedure:
a. Install stopper pin (A) into the chain tensioner (1).
b. Install the chain tensioner and pull the stopper pin out. CAUTION:
After installation, pull the stopper pin out, and make sure
that the tensioner is fully released.
7. Install timing chain (1) and related parts. • Install by lining up mating marks on each sprocket and timingchain as shown.
• Before and after installing chain tensioner (3), check to make sure the mating marks have not slipped.
• After installing timing chain tensioner (3), remove the stopper
pin, and make sure that the tensioner moves freely.
CAUTION:
• For the following note, after the mating marks are aligned,
keep them aligned by holding them by hand.
• To avoid skipped teeth, do not move crankshaft and cam- shaft until front cover is installed.
NOTE:
• Before installing chain tensioner (3) it is possible to slip the
chain on the sprocket to align the chain timing mark with the
sprocket timing mark.
• There may be two color variations of the link marks (link col- ors) on the timing chain.
• There are 26 links between the pink mating marks on the tim- ing chain; and 64 links between the camshaft sprocket pink
link and the crankshaft sprocket yellow link, on the timing
chain side without the tensioner.
AWBIA0139ZZ
ALBIA0841GB
ALBIA0905GB
ALBIA0861GB
Revision: November 20132014 Altima NAM

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]
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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]
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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