engine NISSAN TEANA 2014 Service Manual

ROCKER COVEREM-45
< REMOVAL AND INSTALLATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
ROCKER COVER
Exploded ViewINFOID:0000000009460490
Removal and InstallationINFOID:0000000009460491
REMOVAL
1. Disconnect the battery negative terminal. Refer to
PG-73, "Removal and Installation (Battery)".
2. Remove the engine room cover. Refer to EM-28, "Removal and Installation"
.
3. Remove the core support cover. Refer to EXT-17, "Removal and Installation"
.
4. Remove the front air duct. Refer to EM-29, "Removal and Installation"
.
5. Remove the RH engine mount torque rod. Refer to EM-84, "Removal and Installation"
.
6. Support the engine using a suitable jack.
7. Remove harness grounds from the top of the engine mount bracket.
8. Remove the RH engine support bracket. Refer to EM-84, "Removal and Installation"
.
9. Remove the RH engine mounting bracket. Refer to EM-84, "Removal and Installation"
.
10. Disconnect the PCV hose.
11. Remove the ignition coils. Refer to EM-40, "Removal and Installation"
.
12. Loosen the bolts in the numerical order as shown using power tool.
13. Remove the rocker cover and the rocker cover gasket. Discard the rocker cover gasket.
CAUTION:
Do not reuse the rocker cover gasket.
14. Remove the oil filler cap, (if necessary).
INSTALLATION
1. Oil filler cap 2. Rocker cover 3. Rocker cover gasket
A. Refer to INSTALLATION Engine front
AWBIA1317GB
ALBIA0836GB
Revision: November 20132014 Altima NAM

EM-50
< REMOVAL AND INSTALLATION >[QR25DE]
CAMSHAFT
12. Loosen the camshaft bracket bolts in the order as shown, and
remove the camshaft brackets and camshafts.
NOTE:
Remove No.1 camshaft bracket by slightly tapping it with a rub-
ber mallet.
13. Remove the valve lifters. NOTE:
Check mounting positions, and set them aside in the order removed.
INSPECTION AFTER REMOVAL
Oil Filter
• Check that there is no foreign material on the oil filter (1) and check for clogging.
• Check the oil filter for damage.
• If there is damage, replace the oil filter.
Camshaft Runout
1. Put the camshaft on a V-block supporting the No.2 and No.5 journals.
CAUTION:
Do not support the No. 1 journal (on the side of the cam-
shaft sprocket) because it has different diameter from the
other four locations.
2. Set the dial gauge (A) vertically on the No.3 journal.
3. Turn camshaft in one direction by hand, and measure the cam- shaft runout on the dial gauge total indicator reading.
Camshaft Cam Height
1. Measure the camshaft cam height using suitable tool (A).
2. If wear is beyond the limit, replace the camshaft.
Camshaft Journal Clearance
Outer Diameter of Camshaft Journal
(A) : Intake side
(B) : Exhaust side
: Engine front
ALBIA0846GB
ALBIA0945ZZ
Standard : Less than 0.02 mm (0.0008 in)PBIC3177J
Standard intake cam height : 45.865 - 46.055 mm (1.8057 - 1.8132 in)
Standard exhaust cam height : 44.175 - 44.365 mm (1.7392 - 1.7467 in)
PBIC3178J
Revision: November 20132014 Altima NAM

CAMSHAFTEM-51
< REMOVAL AND INSTALLATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
• Measure the outer diameter of t
he camshaft journal using suitable
tool (A).
Inner Diameter of Camshaft Bracket
• Tighten the camshaft bracket bolts to the specified torque following
the tightening pattern as shown.
• Using inside micrometer (A), measure inner diameter of camshaft bracket (1).
Calculation of Camshaft Journal Clearance
• (Journal clearance) = (inner diameter of camshaft bracket) – (outer diameter of camshaft journal)
• When out of the specified range above, replace either or both the camshaft and the cylinder head assembly.
NOTE:
Inner diameter of the camshaft bracket is manufac tured together with the cylinder head. If the camshaft
bracket is out of specification, replace the whole cylinder head assembly.
Camshaft End Play
Standard No.1 outer di-
ameter : 27.935 - 27.955 mm
(1.0998 - 1.1006 in)
Standard No.2, 3, 4, 5,
outer diameter : 23.435 - 23.455 mm
(0.9226 - 0.9234 in)
PBIC3179J
Step 1 (bolts 9 - 11) : 1.96 N·m (0.2 kg-m, 17 in-lb)
Step 2 (bolts 1 - 8) : 1.96 N·m (0.2 kg-m, 17 in-lb)
Step 3 (bolts 1 - 11) : 5.88 N·m (0.6 kg-m, 52 in-lb)
Step 4 (bolts 1 - 11) : 10.4 N·m (1.02 kg-m, 92 in-lb)
(A) : Intake side
(B) : Exhaust side
: Engine front
ALBIA0846GB
Standard
No.1 : 28.000 - 28.021 mm (1.1024 - 1.1032 in)
Standard
No.2, 3, 4, 5 : 23.500 - 23.521 mm (0.9252 - 0.9260 in)
ALBIA0903GB
Standard : 0.045 - 0.086 mm (0.0018 - 0.0034 in)
Revision: November 20132014 Altima NAM

EM-54
< REMOVAL AND INSTALLATION >[QR25DE]
CAMSHAFT
3. Install camshaft brackets.
• Install by referring to identification mark on upper surfacemark.
• Install so that identification mark can be correctly read when
viewed from the exhaust side.
• Install No. 1 camshaft bracket as follows.
- Apply liquid gasket to No.1 camshaft bracket as shown (A), (B).
• Use Genuine Silicone RTV Seal ant, or equivalent. Refer to
GI-21, "Recommended Chemical Products and Sealants"
.
CAUTION:
• After installation, be sure to wipe off any excessive liquid
gasket leaking from part (C).
• Apply liquid gasket to camshaft bracket contact surface on the front cover backside.
• Apply liquid gasket to the outside of bolt hole on front cover.
• Position the No.1 camshaft bracket near the mounting posi- tion, and install it without disturbing the liquid gasket applied to
the surfaces.
(A) : Intake side
(B) : Exhaust side
: Engine front
AWBIA1318GB
ALBIA0854GB
(a) : 3.4 - 4.4 mm (0.134-0.173 in)
(1) : Front cover
JPBIA0881ZZ
(1) : Number 1 camshaft bracket
(2) : Front cover
ALBIA0852GB
Revision: November 20132014 Altima NAM

CAMSHAFTEM-55
< REMOVAL AND INSTALLATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
4. Tighten camshaft bracket bolts in four steps in the order as
shown.
CAUTION:
After tightening camshaft bracket bol ts, be sure to wipe off excessive liquid gasket from the parts
listed below.
• Mating surface of rocker cover.
• Mating surface of front cover, when installed without the front cover.
5. Install camshaft sprockets. • Install them by lining up the mating marks (outer groove) (B)
on each camshaft sprocket with the painted marks (A) on the
timing chain during removal.
• Before installation of chain tensioner, it is possible to re-match
the painted marks (A) on timing chain with the mating marks
(B) 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 chain guide.
8. Install intake valve timing control cover with the following procedure.
a. Install intake valve timing intermediate lock control solenoid valve, intake valve timing control solenoid
valve, and exhaust valve timing control solenoid valve to valve timing control cover.
CAUTION:
Do not reuse O-ring.
b. Install O-ring to front cover side. CAUTION:
Do not reuse O-ring. Step 1 (bolts 9 - 11) : 1.96 N·m (0.2 kg-m, 17 in-lb)
Step 2 (bolts 1 - 8) : 1.96 N·m (0.2 kg-m, 17 in-lb)
Step 3 (bolts 1 - 11) : 5.88 N·m (0.6 kg-m, 52 in-lb)
Step 4 (bolts 1 - 11) : 10.41 N·m (1.1 kg-m, 8 ft-lb)
(A) : Intake side
(B) : Exhaust side
: Engine front
ALBIA0846GB
ALBIA0841GB
ALBIA0905GB
Revision: November 20132014 Altima NAM

EM-56
< REMOVAL AND INSTALLATION >[QR25DE]
CAMSHAFT
c. Apply liquid gasket to the positions shown. Refer to
GI-21, "Rec-
ommended Chemical Products and Sealants".
d. Install valve timing control cover. • Tighten the bolts to specification in the numerical order asshown.
9. Check and adjust valve clearances. Refer to EM-23, "Camshaft valve clearance"
.
10. Install camshaft position sensor bracket.
a. Apply liquid gasket to camshaft position sensor bracket as shown.
CAUTION:
• Use Genuine Silicone RTV Seal ant, or equivalent. Refer to
GI-21, "Recommended Chemical Products and Sealants"
.
• After installation be sure to wipe off excessive liquid gas-
ket leaking from part (B).
• 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.
b. Tighten bolts to specification in numerical order shown.
11. Install the camshaft position sensors.
12. Installation of the remaining components is in the reverse order of removal.
Inspection After InstallationINFOID:0000000009460494
Inspection of Camshaft Sprocket (INT) Oil Gr oove and Camshaft Sprocket (EXH) Oil Groove
Diameter (A) : 3.4 - 4.4 mm (0.134 - 0.173 in)
AWBIA1362ZZ
ALBIA0839GB
(A) : 2.0 - 3.0 mm (0.079-0.118)
(B) : 10.5 mm (0.413 in)
Camshaft position
sensor bracket bolts : 10.41 N·m (1.1 kg-m, 8.0 ft-lb)
ALBIA0907GB
ALBIA0908GB
Revision: November 20132014 Altima NAM

CAMSHAFTEM-57
< REMOVAL AND INSTALLATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
WARNING:
Check when engine is cold so as to preven t burns from any splashing engine oil.
CAUTION:
Perform this inspection only when DTC P0011, P0014, P052A, P052B is detected in self-diagnostic
results of CONSULT and it is directed according to inspection procedure of EC section. Refer to EC-
210, "Diagnosis Procedure".
1. Check engine oil level and adjust oil level as necessary. Refer to LU-9, "Inspection"
.
2. Remove the intake valve timing intermediate lock control solenoid valve, intake valve timing control sole- noid valve, and exhaust valve timing control solenoid valve. Refer to EM-58, "Intake Valve Timing Interme-
diate Lock Control Solenoid Valve, Intake Valve Timing Control Solenoid Valve, and Exhaust Valve Timing
Control Solenoid Valve".
3. Perform the following procedure to prevent the engi ne from being unintentionally started while checking.
a. Release fuel pressure. Refer to EC-182, "Work Procedure"
.
b. Disconnect injector harness connectors.
4. Crank engine, and then make sure that engine oil comes out of the valve timing control cover oil holes (A). End cranking after
checking.
WARNING:
Be careful not to touch rotating parts (drive belt, crankshaft
pulley, etc.).
CAUTION:
• Engine oil may squirt from intake valve timing intermedi-
ate lock control solenoid valve, intake valve timing control
solenoid valve, exhaust valve timing control solenoid
valve installation holes during cranking. Use a shop cloth
to prevent engine oil from splashing on worker, engine
components and vehicle.
• Do not allow engine oil to get on rubber componen ts such as drive belts or engine mount insula-
tors. Immediately wipe off any splashed engine oil.
5. If engine oil does not come out from valve timing cont rol cover oil holes (A), diagnose problem in lubrica-
tion circuit such as dirty oil groove between oil strainer and intake valve timing intermediate lock control
solenoid valve, intake valve timing control solenoid valve, or exhaust valve timing control solenoid valve.
Refer to LU-7, "Lubrication Circuit"
.
a. Remove components between intake valve timing intermediate lock control solenoid valve, intake valve timing control solenoid valve, exhaust valve timing c ontrol solenoid valve and camshaft sprocket (INT) or
camshaft sprocket (EXH), (if necessary) and then check each oil groove for clogging.
b. Clean oil groove if necessary. Refer to LU-7, "Lubrication Circuit"
.
6. After inspection, install the remaining components in the reverse order of removal.
ALBIA0909GB
Revision: November 20132014 Altima NAM

EM-58
< REMOVAL AND INSTALLATION >[QR25DE]
VALVE TIMING CONTROL
VALVE TIMING CONTROL
Exploded ViewINFOID:0000000009460495
Intake Valve Timing Intermediate Lock Cont
rol Solenoid Valve, Intake Valve Timing
Control Solenoid Valve, a nd Exhaust Valve Timing Control Solenoid Valve
INFOID:0000000009460496
REMOVAL
1. Disconnect the battery negative terminal. Refer to PG-73, "Removal and Installation (Battery)".
2. Remove the core support cover. Refer to EXT-17, "Removal and Installation"
.
3. Remove the front air duct. Refer to EM-29, "Removal and Installation"
.
4. Remove the engine room cover. Refer to EM-28, "Removal and Installation"
.
5. Support the engine using a suitable jack.
6. Remove the RH engine mounting support bracket. Refer to EM-84, "Removal and Installation"
.
7. Remove the RH engine mount torque rod. Refer to EM-84, "Removal and Installation"
.
8. Disconnect intake valve timing intermediate lock control solenoid valve, intake valve timing control sole- noid valve, and exhaust valve timing control solenoid valve connectors.
9. Remove intake valve timing intermediate lock control solenoid valve, intake valve timing control solenoid valve, and exhaust valve timing control solenoid valve bolts.
10. Remove intake valve timing intermediate lock control solenoid valve, intake valve timing control solenoid valve, exhaust valve timing control solenoid valve from valve timing control cover.
11. Remove O-rings from intake valve timing intermediate lock control solenoid valve, intake valve timing con- trol solenoid valve, and exhaust valve timing control solenoid valve.
CAUTION:
Do not reuse O-rings.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Do not reuse O-rings.
• Lubricate O-rings with clean en gine oil before installing.
1. Valve timing cover 2. O-rings 3. Intake valve timing intermediate
lock control solenoid valve
4. Intake valve timing control sole- noid valve 5. Exhaust valve timing control so-
lenoid valve
AWBIA1319GB
Revision: November 20132014 Altima NAM

VALVE TIMING CONTROLEM-59
< REMOVAL AND INSTALLATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EM
NP
O
Valve Timing Control CoverINFOID:0000000009460497
REMOVAL
1. Remove the intake valve timing intermediate lock control solenoid valve, intake valve timing control sole-
noid valve, exhaust valve timing control solenoid valve. Refer to EM-58, "Intake Valve Timing Intermediate
Lock Control Solenoid Valve, Intake Valve Timing Control Solenoid Valve, and Exhaust Valve Timing Con-
trol Solenoid Valve".
2. Remove harness grounds and retainers from the top if the engine mount bracket.
3. Loosen the valve timing control cover bolts in the reverse order shown.
a. Remove the valve timing control cover bolts.
b. Remove the valve timing control cover by cutting the liquid gas- ket using Tool (A).
NOTE:
Do not loosen screws (A) on the back of the valve timing control
cover.
INSTALLATION
1. Install valve timing control cover with the following procedure.
a. Install intake valve timing intermediate lock control solenoid valve, intake valve timing control solenoid
valve and exhaust valve timing control solenoid valve to valve timing control cover.
b. Install O-ring to front cover side. CAUTION:
Do not reuse O-ring.
ALBIA0839GB
Tool number : KV10111100 (J-37228)
AWBIA1257GB
AWBIA1361ZZ
Revision: November 20132014 Altima NAM

EM-62
< REMOVAL AND INSTALLATION >[QR25DE]
TIMING CHAIN
Removal and Installation
INFOID:0000000009460499
CAUTION:
Apply new engine oil to parts as indicated in the illustration before installation.
REMOVAL
1. Remove the engine and transaxle assembly. Refer to EM-84, "Removal and Installation".
2. Separate the engine from the transaxle assembly. Refer to EM-84, "Removal and Installation"
.
3. Remove the drive plate assembly if using an engine stand that attaches to the rear of the engine block.
4. Install engine to a suitable engine stand.
5. Remove the upper and lower oil pan, oil strainer, and O-ring. Refer to EM-36, "Removal and Installation"
.
6. Remove generator and bracket. Refer to CHG-32, "Removal and Installation"
.
7. Remove the engine mount bracket. Refer to EM-84, "Removal and Installation"
.
8. Set the No.1 cylinder at TDC on the compression stroke using the following procedure:
a. Rotate the crankshaft pulley clockwise and align the mating mark (B) to the timing indicator (A) on the front cover.
NOTE:
Do not use the white paint marks (C).
b. At the same time, make sure that the camshaft sprocket mating marks (B) line up with the painted marks on the timing chain (A).
• If not lined up, rotate the crankshaft pulley one more turn to line up the mating marks to the positions as shown.
9. 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.
ALBIA0840GB
ALBIA0841GB
ALBIA0857GB
Revision: November 20132014 Altima NAM