belt NISSAN TEANA 2014 Repair Manual

EM-14
< SYMPTOM DIAGNOSIS >[QR25DE]
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING
Use the Chart Below to Help You Find the Cause of the Symptom
INFOID:0000000009460464
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
1. Valve mechanism 2. Intake and exhaust valve 3. Water pump
4. Timing chain 5. Drive belt 6. Rotation mechanism
A. Tappet noise B. Camshaft bearing noise C. Water pump noise
D. VTC noise E. Timing chain and chain tensioner noiseF. Drive belt noise (slipping)
G. Main bearing noise H. Connecting rod bearing noise J. Piston pin noise
K. Piston slap noise
Location of noise Typ e of
noise Operating condition of engine
Source of noise Check item
Refer-
ence page
Before
warm-
up After
warm-
up When
start-
ing When
idling When
racing While
driving
Top of en-
gine
Rocker
cover
Cylinder
head Ticking or
clicking CA—AB—
Tappet
noise Valve clearance
EM-23
Rattle C A — A B C Camshaft
bearing
noise Camshaft journal clear-
ance
Camshaft runout EM-47EM-47
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil pan Slap or
knock —A—BB—
Piston pin
noise Piston and piston pin
clearance
Connecting rod bushing
clearance EM-96
EM-96
Slap or
rap A——BBA
Piston
slap noise Piston-to-bore clear-
ance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsion EM-96EM-96
EM-96
EM-96
Knock A B C B B B
Connect-
ing rod
bearing
noise Connecting rod bushing
clearance (Small end)
Connecting rod bearing
clearance (Big end) EM-96EM-96
Knock A B — A B C
Main bear-
ing noise Main bearing oil clear-
ance
Crankshaft runout EM-96EM-96
Front of
engine
Timing
chain cov-
er Tapping or
ticking AA—BBB Timing
chain and
chain ten-
sioner
noise Timing chain cracks
and wear
Timing chain tensioner
operation EM-62
Revision: November 20132014 Altima NAM

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGEM-15
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A: Closely related B: Related C: Sometimes related —: Not related Front of
engine Squeak-
ing or fizz-
ing AB—B—B Drive belts
(Sticking
or slip-
ping) Drive belts deflection
EM-19
CreakingA B ABAB Drive belts
(Slipping) Idler pulley bearing op-
eration
Squall
Creak AB—BAB Water
pump
noise Water pump operation
CO-20
Rattle — — A ———VTC VTC sprockets EM-61
Location
of noise Type of
noise Operating condition of engine
Source of noise Check item
Refer-
ence page
Before
warm-
up After
warm-
up When
start-
ing When
idling When
racing While
driving
Revision: November 20132014 Altima NAM

DRIVE BELTSEM-19
< PERIODIC MAINTENANCE > [QR25DE]
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DRIVE BELTS
Exploded ViewINFOID:0000000009460467
Checking Drive BeltsINFOID:0000000009460468
WARNING:
Inspect the drive belt only when the engine is stopped.
1. Visually check entire drive belt for wear, damage or cracks.
2. Check that the drive belt auto-tensioner indicator is within the possible use range.
NOTE:
• When new drive belt is installed, the drive belt aut o-tensioner indicator should be within the new drive
belt range.
• Check the drive belt auto-tensioner indicator when the engine is cold.
3. If the drive belt auto-tensioner indicator is out of the possible use range or belt is damaged, replace drive
belt.
Tension AdjustmentINFOID:0000000009460469
Belt tension is not manually adjustable, it is aut omatically adjusted by the drive belt auto-tensioner.
Removal and InstallationINFOID:0000000009460470
REMOVAL
1. Remove the fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Removal and
Installation".
1. Generator pulley 2. Water pump pulley 3. Drive belt auto-tensioner
4. Crankshaft pulley 5. A/C compressor pulley 6. Drive belt retainer boss
A. View A B. New drive belt range C. Possible use range
D. Indicator (notch)
AWBIA1309GB
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EM-20
< PERIODIC MAINTENANCE >[QR25DE]
DRIVE BELTS
2. Securely hold the hexagonal part (A) of drive belt auto-tensioner
(1) using suitable tool, and move in the direction of arrow (loos-
ening direction of tensioner).
WARNING:
Avoid placing hand in a locatio n where pinching may occur
if the holding tool accidentally comes off.
3. Insert a rod approximately 6 mm (0.24 in) in diameter through the rear of the drive belt auto-tensioner into retaining boss (B) to
lock drive belt auto-tensioner pulley.
NOTE:
Leave drive belt auto-tensioner pulley arm locked until drive belt
is installed again.
4. Loosen drive belt from drive belt auto-tensioner and then remove it from the other pulleys.
INSTALLATION
1. Install the drive belt onto all of the pulleys except for the drive belt auto-tensioner. Then install the drive
belt onto drive belt auto-tensioner last.
CAUTION:
Confirm belts are completely set on the pulleys.
2. Release drive belt auto-tensioner, and apply tension to drive belt.
WARNING:
Avoid placing hand in a location where pinching m ay occur if the holding tool accidentally comes
off.
3. Turn crankshaft pulley clockwise several times to equalize tension between each pulley.
4. Confirm the indicator is within the possible use range. Refer to EM-19, "Checking Drive Belts"
.
5. Install the fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Removal and
Installation".
Removal and Installation of Drive Belt Auto-tensionerINFOID:0000000009460471
REMOVAL
CAUTION:
The complete drive belt auto-tensioner must be replaced as a unit, including the pulley.
1. Remove the front RH wheel and tire assembly. Refer to WT-55, "Adjustment"
.
2. Remove the fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Removal and
Installation".
ALBIA0879GB
1. Drive belt auto-tensioner
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DRIVE BELTSEM-21
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3. Remove the engine room cover. Refer to
EM-28, "Removal and Installation".
4. Remove the drive belt. Refer to EM-19, "Removal and Installation"
.
5. Remove the drive belt auto-tensioner using power tool.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• If there is damage greater than peeled pa int, replace drive belt auto-tensioner unit.
• Install the drive belt auto-te nsioner carefully so not to damage the water pump pulley.
Revision: November 20132014 Altima NAM

OIL PAN AND OIL STRAINEREM-37
< REMOVAL AND INSTALLATION > [QR25DE]
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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

CAMSHAFTEM-57
< REMOVAL AND INSTALLATION > [QR25DE]
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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

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
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(A) : Dust seal lip
(B) : Oil seal lip
: Engine outside
: Engine inside
PBIC3485J
Revision: November 20132014 Altima NAM

ENGINE ASSEMBLYEM-85
< UNIT REMOVAL AND INSTALLATION > [QR25DE]
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27. Remove the LH and RH drive shafts. Refer to
FAX-10, "Removal and Installation (LH)", FAX-12, "Removal
and Installation (RH)".
28. Remove the drive belt. Refer to EM-19, "Removal and Installation"
.
29. Remove the front suspension member. Refer to FSU-20, "Removal and Installation"
.
30. Remove the A/C compressor with piping connected and support using suitable wire.
31. Disconnect the transaxle shift controls. Refer to TM-407, "Removal and Installation"
.
32. Install engine slingers into the rear of the cylinder head (A) and front engine mounting bracket holes (B).
• Use engine mounting bolt holes for front slinger.
• Use the holes in the rear of the cylinder head for the rear
slinger.
33. Support engine and transaxle assembly with engine lifti ng equipment from the top with the vehicle raised
on a hoist.
34. Remove the RH engine mount torque rod, RH engine support bracket and RH engine mounting insulator and bracket.
35. Remove LH transaxle mounting insulator through-bolts.
36. Lower the engine and transaxle assembly from the engine compartment using suitable tool.
CAUTION:
• Before and during this procedure, alw ays check if any harnesses are left connected.
• Avoid any damage to, or any oil/grease smearing or spills onto the engine mounting insulators.
37. Remove the starter motor. Refer to STR-22, "QR25DE : Removal and Installation"
.
38. Remove engine and transaxle harness.
39. Separate engine and transaxle. Refer to TM-206, "Exploded View"
.
INSTALLATION
Installation is in the reverse order of removal.
NOTE:
Tighten the transmission bolts to specification. Refer to TM-407, "Removal and Installation"
.
• Do not allow oil to get on mounting insulators. Be careful not to damage mounting insulators.
• If parts have a direction mark (arrow) this indicates front of the vehicle, and the parts must be installed
according to the identification mark.
• Install the RH engine mounting bracket bolts in the following steps:
- First install bolts (A) and (B) loosely.
- Install and tighten the five RH engine mounting bracket bolts to specification in the order as shown.
- : Front
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels incl uding engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-11, "FOR USA AND CANADA : Fluids and Lubricants"
.
• Use procedure below to check for fuel leakage.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak- age at connection points.
• Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration. Slinger bolts (A) : 28 N·m (2.8 kg-m, 21 ft-lb)
Slinger bolts (B) : 48 N·m (4.9 kg-m, 35 ft-lb))
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RH engine mounting bracket bolt : 48.2 N·m (4.9 kg-m, 36 ft-lb)
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Revision: November 20132014 Altima NAM

EM-112
< SERVICE DATA AND SPECIFICATIONS (SDS) [QR25DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
*2: When the intake or exhaust valve opening angle is at the maximum.
*3: When starting the engine with engine coolant temperature 60
°C (140 °F) or less.
DRIVE BELTS
EXHAUST MANIFOLD
Unit: mm (in)
SPARK PLUG
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
CYLINDER HEAD
Unit: mm (in)
VA LV E
Valve Dimensions
Unit: mm (in)
Tension of drive belts Auto adjustment by drive belt auto-tensioner
Surface distortion Description Limit
Exhaust manifold 0.3 (0.012)
Make DENSO
Type* Standard FXE20HE11C
Gap (nominal) 1.1 (0.043)
Description Limit
Head surface distortion 0.1 (0.004)
Description Standard
Spark plug tube installation height 41.7 (1.642)
PBIC0283E
Valve head diameter (D) Intake 35.5 - 35.8 (1.398 - 1.409)
Exhaust 30.3 - 30.6 (1.193 - 1.205)
SEM188
Revision: November 20132014 Altima NAM