Nissan Almera Tino V10. Instruction — part 839
EM-12
[QG]
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Use the Chart Below to Help You Find the Cause of the Symptom.
EBS00QE3
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 related
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
Top of
engine
Rocker
cover
Cylinder
head
Ticking or
clicking
C
A
—
A
B
—
Tappet
noise
Valve clearance
Rattle
C
A
—
A
B
C
Camshaft
bearing
noise
Camshaft journal clear-
ance
Camshaft runout
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil pan
Slap or
knock
—
A
—
B
B
—
Piston pin
noise
Piston and piston pin
clearance
Connecting rod bush-
ing clearance
Slap or
rap
A
—
—
B
B
A
Piston
slap noise
Piston-to-bore clear-
ance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsion
Knock
A
B
C
B
B
B
Connect-
ing rod
bearing
noise
Connecting rod bush-
ing clearance (Small
end)
Connecting rod bear-
ing clearance (Big end)
Knock
A
B
—
A
B
C
Main
bearing
noise
Main bearing oil clear-
ance
Crankshaft runout
Front of
engine
Timing
chain
cover
Tapping or
ticking
A
A
—
B
B
B
Timing
chain and
chain
tensioner
noise
Timing chain cracks
and wear
Timing chain tensioner
operation
Front of
engine
Squeak-
ing or fizz-
ing
A
B
—
B
—
C
Drive belts
(Sticking
or slip-
ping)
Drive belts deflection
Creaking
A
B
A
B
A
B
Drive belts
(Slipping)
Idler pulley bearing
operation
Squall
Creak
A
B
—
B
A
B
Water
pump
noise
Water pump operation
DRIVE BELTS
EM-13
[QG]
C
D
E
F
G
H
I
J
K
L
M
A
EM
DRIVE BELTS
PFP:02117
Checking Drive Belts
EBS00QE4
●
Before inspecting the engine, make sure the engine has cooled down; wait approximately 30 minutes
after the engine has been stopped.
●
Visually inspect all belts for wear, damage, or cracks on contacting surfaces and edge areas.
●
When measuring deflection, apply 98 N (10 kg, 22 lb) at the
▼
marked point.
CAUTION:
When measuring belt tension immediately after belt is installed, first set the tension to the standard.
Then, rotate crankshaft for more than two turns in order to eliminate variance in belt deflection
between the pulleys. Re-measure and adjust the tension to the standard.
MBIA0034E
Deflection adjustment Unit: mm (in)
Used belt
New belt
Limit
After adjustment
Alternator
Without air conditioner compressor
10.2 (0.402)
6.5 - 7.0
(0.256 - 0.276)
5.5 - 6.1
(0.217 - 0.240)
With air conditioner compressor
8.1 (0.319)
5.3 - 5.7
(0.209 - 0.224)
4.5 - 5.0
(0.177 - 0.197)
Power steering oil pump
7.1 (0.280)
4.4 - 4.9
(0.173 - 0.193)
3.9 - 4.4
(0.154 - 0.173)
Applied pushing force
98 N (10 kg, 22 lb)
EM-14
[QG]
DRIVE BELTS
Tension Adjustment
EBS00QE5
CAUTION:
●
When belt is replaced with a new one, tighten it a little
stronger than current one to accommodate for insufficient
adaptability with pulley grooves.
●
When tension of belt being used exceeds “Retightening
limit”, adjust it to value for “Used belt”.
●
When installing belt, make sure that it is correctly engaged with pulley groove.
●
Keep oil and water away from belt.
●
Do not twist or bend belt excessively.
●
When adjusting belt, remove snap retainer from adjusting bolt thread (to prevent the retainer from becom-
ing pinched or missing).
●
After adjustment, be sure to install snap retainer to adjusting bolt thread.
NOTE:
Snap retainer can prevent adjusting bolt from dropping due to vibration during driving.
POWER STEERING PUMP AND WATER PUMP BELT
1.
Loosen lock nut (A) and power steering pump mounting nut (B).
2.
Turn adjusting bolt (C) to adjust. Refer to
.
3.
Tighten lock nut (A) and power steering pump mounting nut (B)
in this order.
ALTERNATOR AND AIR CONDITIONER COMPRESSOR BELT
1.
Remove RH splash cover (with undercover attached).
2.
Loosen lock nut (G).
3.
Turn adjusting bolt (H) to adjust.
Refer to
.
4.
Tighten lock nut (G).
Portion
Belt tightening method for adjustment
Power steering pump and water pump
belt
Adjusting bolt on power steering pump
Alternator and air conditioner compres-
sor belt
Adjusting bolt on idler pulley
PBIC0531E
Nut A :
: 16.6 - 23.5 N·m (1.7 - 2.4 kg-m, 13 - 17 ft-lb)
Nut B :
: 31.4 - 42.2 N·m (3.2 - 4.3 kg-m, 24 - 31 ft-lb)
PBIC0532E
Nut G :
: 24.5 - 31.4 N·m (2.5 - 3.2 kg-m, 18 - 23 ft-lb)
DRIVE BELTS
EM-15
[QG]
C
D
E
F
G
H
I
J
K
L
M
A
EM
Removal and Installation
EBS00QE6
REMOVAL
●
Loosen each belt while referring to “Tension Adjustment”, and remove them one by one starting from the
one in front.
INSTALLATION
1.
Install belts to pulley in reverse order of removal.
2.
Adjust belt tension.
CAUTION:
●
When checking belt tension immediately after installation, first, adjust to specified value. Then,
after turning crankshaft more than two turns, re-adjust to specified value to avoid variation in
deflection between pulleys.
●
Tighten idler pulley lock nut by hand and measure tension without looseness.
3.
Tighten each adjusting bolt and nut to the specified torque.
4.
Make sure that tension of each belt is within the standard.
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