NISSAN LATIO 2010 Service Repair Manual

EM-12
< SYMPTOM DIAGNOSIS >[HR16DE]
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting - Engine NoiseINFOID:0000000005398035
PBIC3870E
Revision: January 20102010 Versa

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGEM-13
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Use the Chart Below to Help You
Find the Cause of the SymptomINFOID:0000000005398036
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.
A: Closely related B: Related C: Sometimes related —: Not relatedLocation
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
Top of en-
gine
Rocker
cover
Cylinder
head Ticking or
clicking
CA—AB— Tappet
noiseValve clearance
EM-20
Rattle C A — A B C Camshaft
bearing
noiseCamshaft journal oil
clearance
Camshaft runout
EM-112EM-112
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock
—A—BB—
Piston pin
noisePiston to piston pin oil
clearance
Connecting rod small
end clearance
EM-116
EM-119
Slap or
rap
A——BBA
Piston
slap noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsion EM-116EM-116
EM-116
EM-119
Knock A B C B B B
Connect-
ing rod
bearing
noiseConnecting rod small
end clearance
Connecting rod bearing
oil clearance
EM-116EM-119
Knock A B — A B C
Main bear-
ing noiseMain bearing oil clear-
ance
Crankshaft runout EM-120EM-116
Front of
engine
Front cov-
erTapping or
ticking
AA—BBB Timing
chain and
chain ten-
sioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operation
EM-57
Front of
engineSqueak-
ing or fizz-
ing
AB—B—C Drive belt
(Sticking
or slip-
ping)Drive belt deflection
E M - 111
CreakingA B ABAB Drive belt
(Slipping)Idler pulley bearing op-
eration
Squall
Creak AB—BAB Water
pump
noise
Water pump operation
CO-22
Revision: January 20102010 Versa

EM-14
< ON-VEHICLE MAINTENANCE >[HR16DE]
DRIVE BELTS
ON-VEHICLE MAINTENANCE
DRIVE BELTS
CheckingINFOID:0000000005398037
• Inspection should be done only when engine is cold or over 30
minutes after the engine is stopped.
• Visually check belts for wear, damage, and cracks on inside and edges.
• Turn crankshaft pulley two times clockwise, and make sure tension on all pulleys is equal before doing the test.
• When measuring deflection, apply 98 N (10 kg, 22 lb) at the ( ) marked point.
• Measure the belt tension and frequency with acous tic tension gauge at the ( ) marked point.
CAUTION:
• When the tension and frequency are measured, the acoustic tension gauge should be used.
• When checking immediately after installation, first ad just it to the specified value. Then, after turning
crankshaft two turns or more, re-adjust to the specified value to avoid variation in deflection
between pulleys.
Tension AdjustmentINFOID:0000000005398038
CAUTION:
• When belt is replaced with new one, adjust belt tension to the value for “New belt”, because new belt will not fully seat in the pulley groove.
• When tension of the belt being used exceeds “Limit”, adjust it to the value for “After adjusted”.
• When installing a belt, make sure it is correctly engaged with the pulley groove.
• Never allow oil or engine coolant to get on the belt.
• Never twist or bend the belt strongly.
1. Loosen the idler pulley lock nut (A) from the tightening position with the specified torque by 45 degrees.
CAUTION:
1 : Generator
2: Water pump
3 : Crankshaft pulley
4: A/C compressor (with A/C models)
: Idler pulley (without A/C models)
5 : Idler pulley
6: Drive belt
Belt Deflection / Belt Tension and Frequency : Refer to EM-111, "Drive Belts".
PBIC3642E
LocationLocation of adjuster and tightening method
Drive belt Adjusting bolt on idler pulley
1 : Generator
2: Water pump
3 : Crankshaft pulley
4 : A/C compressor
(with A/C models)
: Idler pulley (without A/C models)
5 : Idler pulley
6 : Drive belt
A : Idler pulley lock nut
B : Adjusting bolt
PBIC3643E
Revision: January 20102010 Versa

DRIVE BELTSEM-15
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• When the lock nut is loosened excessively, the idle
r pulley tilts and the correct tension adjust-
ment cannot be performed. Never loo sen it excessively (more than 45 degrees).
• Put a matching mark on the lock nut, and check turning angle with a protractor. Never visually
check the tightening angle.
2. Adjust the belt tension by turning the adjusting bolt. CAUTION:
• When checking immediately after in stallation, first adjust it to the specified value. Then, after
turning crankshaft two turns or more, re-adjust to the specified value to avoid variation in deflec-
tion between pulleys.
• When the tension adjustment is performed, the lo ck nut should be in the condition at step“2”. If
the tension adjustment is performed when the lo ck nut is loosened more than the standard, the
idler pulley tilts and the correct tens ion adjustment cannot be performed.
3. Tighten the idler pulley lock nut.
Removal and InstallationINFOID:0000000005398039
REMOVAL
1. Loosen the idler pulley lock nut (A), and then adjust the belt ten- sion by turning the adjusting bolt (B).
2. Remove drive belt.
INSTALLATION
1. Pull the idler pulley in the loosening direction, and then tempo- rarily tighten the idler pulley lock nut (A) to the following torque.
NOTE:
Do not move the lock nut from the tightened position. Proceed to step “2”.
2. Install the drive belt to each pulley. CAUTION:
• Make sure that there is no oil, grease, or coolant, etc. in pulley grooves.
• Make sure that the belt is securely inside the groove on each pulley.
3. Adjust drive belt tension by turning the adjusting bolt. Refer to EM-14, "
Tension Adjustment".
CAUTION: Idler pulley lock nut : 34.8 N·m (3.5 kg-m, 26 ft-lb)
1 : Generator
2: Water pump
3 : Crankshaft pulley
4
: A/C compressor (with A/C models)
: Idler pulley (without A/C models)
5 : Idler pulley
6: Drive belt
PBIC3643E
1 : Generator
2: Water pump
3 : Crankshaft pulley
4 : A/C compressor (with A/C models)
: Idler pulley (without A/C models)
5 : Idler pulley
6: Drive belt
B : Adjusting bolt
Idler pulley lock nut : 4.4 N·m (0.45 kg-m, 39 in-lb)
(temporary tightening)
PBIC3643E
Revision: January 20102010 Versa

EM-16
< ON-VEHICLE MAINTENANCE >[HR16DE]
DRIVE BELTS
• Perform the belt tension adjustment with the lock
nut temporarily tightened at the step “1” so as
not to tilt the idler pulley.
• When checking immediately after in stallation, first adjust it to the specified value. Then, after
turning crankshaft two turns or more, re-adjust to the specified value to avoid variation in deflec-
tion between pulleys.
4. Tighten the idler pulley lock nut.
5. Make sure that belt tension of each belt is within the standard. Idler pulley lock nut : 34.8 N·m (3.5 kg-m, 26 ft-lb)
Revision: January 20102010 Versa

AIR CLEANER FILTEREM-17
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AIR CLEANER FILTER
Removal and InstallationINFOID:0000000005398040
REMOVAL
1. Push the tabs (A) of both ends of the air cleaner cover (1) into
the inside (B).
2. Pull up the air cleaner cover (1) and remove it (C).
3. Remove air cleaner filter (1) and holder (2) assembly from the air cleaner case.
4. Remove the air cleaner filter (1) from the holder (2).
INSPECTION AFTER REMOVAL
It is necessary to replace the air cleaner filter at the recommended intervals, more often under dusty driving
conditions. Refer to MA-9, "
Introduction of Periodic Maintenance".
INSTALLATION
Installation is in the reverse order of removal.
• Install the air cleaner cover (1) in the direction shown.
• Air cleaner filter (2)
• Holder (3)
PBIC3557J
PBIC3558J
PBIC3559J
Revision: January 20102010 Versa

EM-18
< ON-VEHICLE MAINTENANCE >[HR16DE]
SPARK PLUG
SPARK PLUG
Exploded ViewINFOID:0000000005398041
Removal and InstallationINFOID:0000000005398042
REMOVAL
1. Remove intake manifold. Refer to
EM-28, "Removal and Installation".
2. Remove ignition coil. Refer to EM-46, "
Removal and Installation".
3. Remove spark plug with a suitable tool.
INSPECTION AFTER REMOVAL
CAUTION:
• Never drop or shock spark plug.
• Never use a wire brush for cleaning.
• If plug tip is covered with carbon, spark plug cleaner may be used.
1. Ignition coil 2. Spark plug
PBIC3662E
PBIC3871E
Cleaner air
pressure:Less than 588 kPa (6 kg/cm2, 85 psi)
Cleaning time: Less than 20 seconds
SMA773C
Revision: January 20102010 Versa

SPARK PLUGEM-19
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•
Checking and adjusting plug gap is not required between
change intervals.
INSTALLATION
Installation is in the reverse order of removal.
JPBIA0031ZZ
Make : Denso
Part number : FXE20HE-11
Gap (nominal) : 1.1 mm (0.043 in)
Revision: January 20102010 Versa

EM-20
< ON-VEHICLE MAINTENANCE >[HR16DE]
CAMSHAFT VALVE CLEARANCE
CAMSHAFT VALVE CLEARANCE
Inspection and AdjustmentINFOID:0000000005398043
INSPECTION
Perform inspection as follows after removal, installation or
replacement of camshaft or valve-related parts, or if
there is unusual engine conditions regarding valve clearance.
1. Remove rocker cover. Refer to EM-46, "
Exploded View".
2. Measure the valve clearance with the following procedure:
a. Set No. 1 cylinder at TDC of its compression stroke. • Rotate crankshaft pulley (2) clockwise and align TDC mark(without paint mark) (A) to timing indicator (1) on front cover.
• At the same time, make sure that both intake and exhaust cam noses of No. 1 cylinder face inside as shown.
• If they do not face inside, rotate crankshaft pulley once more (360 degrees) and align as shown.
b. Use a feeler gauge, measure the clearance between valve lifter and camshaft.
• Measure the valve clearances at locations marked “ ×” as
shown in the table below [locations indicated with black arrow
( ) as shown] with a feeler gauge.
B : White paint mark (Not use for service)
PBIC3673E
1 : Camshaft (INT)
2 : Camshaft (EXH)
: Engine front
PBIC3359J
Valve Clearance: Refer to EM-112, "Camshaft".
SEM139D
A : No. 1 cylinder compression TDC
: Engine front
Measuring position No. 1 CYL. No. 2 CYL. No. 3 CYL. No. 4 CYL.
Measurement po-
sition EXH
××
INT ××
PBIC3707E
Revision: January 20102010 Versa

CAMSHAFT VALVE CLEARANCEEM-21
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c. Rotate crankshaft pulley (2) one revolution (360 degrees) and
align TDC mark (without paint mark) (A) to timing indicator (1) on
front cover.
• Measure the valve clearance at locations marked “ ×” as shown
in the table below [locations indicated with black arrow ( ) as
shown] with a feeler gauge.
3. If out of standard, perform adjustment procedure.
ADJUSTMENT
• Perform adjustment depending on selected head thickness of valve lifter.
1. Remove camshaft. Refer to EM-59, "
Exploded View".
2. Remove valve lifters at the loca tions that are out of the standard.
3. Measure the center thickness of the removed valve lifters with a micrometer (A).
4. Use the equation below to calculate valve lifter thickness for replacement.
B : White paint mark (Not use for service)
PBIC3673E
A : No. 4 cylinder compression TDC : Engine front
Measuring position No. 1 CYL. No . 2 CYL. No. 3 CYL. No. 4 CYL.
Measurement
point EXH
××
INT ××
PBIC3708E
PBIC3195J
Valve lifter thickness calculation: t = t1 + (C1– C2)
t = Valve lifter thickness to be replaced
t
1= Removed valve lifter thickness
C
1= Measured valve clearance
C
2= Standard valve clearance: Intake : 0.30 mm (0.012 in)
Exhaust : 0.33 mm (0.013 in)
Revision: January 20102010 Versa