Nissan Versa Sedan. Instruction — part 370

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

EM-15

< SYMPTOM DIAGNOSIS >

[HR16DE]

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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 en-
gine rock-
er cover
cylinder
head

Ticking or
clicking

C

A

—

A

B

—

Tappet
noise

Valve clearance

EM-10

Rattle

C

A

—

A

B

C

Camshaft
bearing
noise

Camshaft journal oil
clearance
Camshaft runout

EM-118

Crank-
shaft pul-
ley
cylinder
block (side
of engine)
oil pan

Slap or
knock

—

A

—

B

B

—

Piston pin
noise

Piston to piston pin oil
clearance
Connecting rod bushing
oil clearance

EM-122

Slap or
rap

A

—

—

B

B

A

Piston
slap noise

Piston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsion

EM-122

Knock

A

B

C

B

B

B

Connect-
ing rod
bearing
noise

Connecting rod bushing
oil clearance
Connecting rod bearing
oil clearance

EM-122
EM-126

Knock

A

B

—

A

B

C

Main bear-
ing noise

Main bearing oil clear-
ance
Crankshaft runout

EM-125
EM-122

Front of
engine
front cover

Tapping or
ticking

A

A

—

B

B

B

Timing
chain and
chain ten-
sioner
noise

Timing chain cracks
and wear
Timing chain tensioner
operation

EM-47
EM-47

Front of
engine

Squeak-
ing or fizz-
ing

A

B

—

B

—

C

Drive belt
(Sticking
or slip-
ping)

Drive belt deflection

EM-117

Creaking

A

B

A

B

A

B

Drive belt
(Slipping)

Idler pulley bearing op-
eration

Squall
Creak

A

B

—

B

A

B

Water
pump
noise

Water pump operation

CO-19

EM-16

< PERIODIC MAINTENANCE >

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DRIVE BELT

PERIODIC MAINTENANCE

DRIVE BELT

Exploded View

INFOID:0000000009266635

Removal and Installation

INFOID:0000000009266636

REMOVAL

1. Remove wheel and tire (RH) using power tool. Refer to

WT-39, "Adjustment"

.

2. Remove the fender protector (RH) front side clip. Refer to

EXT-26, "Exploded View"

.

3. Loosen the lock nut (A), and then release the belt tension by

turning the adjusting bolt (B).

4. Remove the drive belt.

INSTALLATION

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

JSBIA1053ZZ

(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

DRIVE BELT

EM-17

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1. Pull the idler pulley in the loosening direction, and then tempo-

rarily tighten the lock nut (A) to the following torque.

NOTE:

Do not move the lock nut from the temporary tightened position. Go to step 2.

2. Install the drive belt on each pulley.

CAUTION:

• Check that there is no oil, grease, or coolant, etc. in pulley grooves.

• Check that the belt seats securely inside the groove on each pulley.

3. Adjust drive belt tension by turning the adjusting bolt. Refer to

EM-18, "Adjustment"

.

CAUTION:

• Perform the belt tension adjustment with the lock nut temporarily tightened to the torque specifi-

cation listed in step 1 which prevents the idler pulley from tilting.

• When checking immediately after installation, first adjust it to the specified value. Then, after

turning crankshaft two turns or more, readjust to the specified value to avoid variation in deflec-

tion between pulleys.

4. Tighten the lock nut to final tightening specification.

5. Check that belt tension is within the specification. Refer to

EM-117, "Drive Belt"

.

Inspection

INFOID:0000000009266637

• Inspection should be done only when engine is cold or over 30

minutes after the engine is stopped.

• Visually check belt for wear, damage, and cracks on inside and

edges.

• Turn crankshaft pulley clockwise twice, and check that the tension on all pulleys equalizes before testing.
• When measuring deflection, apply 98.1 N (10 kg, 22 lb) at the ( ) marked point.
• Measure the belt tension and frequency with acoustic 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 adjust it to the specified value. Then, after turning

crankshaft two turns or more, readjust to the specified value to avoid variation in deflection between

pulleys.

Lock nut (A)
(Temporary tightening)

: 4.4 N·m (0.45 kg-m, 39 in-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

(B)

: Adjusting bolt

Lock nut (Final tightening)

: 34.8 N·m (3.5 kg-m, 26 ft-lb)

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

Belt deflection/belt tension and frequency

: Refer to

EM-117, "Drive Belt"

.

PBIC3642E

EM-18

< PERIODIC MAINTENANCE >

[HR16DE]

DRIVE BELT

Adjustment

INFOID:0000000009266638

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, check it is correctly engaged with the pulley groove.

• Do not allow oil or engine coolant to get on the belt.

• Do not twist or bend the belt strongly.
1. Remove the fender protector (RH) front side clip. Refer to

EXT-26, "Removal and Installation"

.

2. Tighten lock nut (A) temporarily to the following torque.

3. Adjust the belt tension by turning the adjusting bolt. Refer to

EM-117, "Drive Belt"

.

CAUTION:

• When checking immediately after installation, first adjust it to the specified value. Then, after

turning crankshaft two turns or more, readjust to the specified value to avoid variation in deflec-

tion between pulleys.

• When the tension adjustment is performed, the lock nut should be in the condition at Step 2. If

the tension adjustment is performed when the lock nut is loosened more than the temporary

tightening, the idler pulley tilts and the correct tension adjustment cannot be performed.

4. Tighten the lock nut to final tightening specification.

Location

Location of adjuster and tightening method

Drive belt

Adjusting bolt on idler pulley

Lock nut (A)
(Temporary tightening)

: 4.4 N·m (0.45 kg-m, 39 in-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

(B)

: Adjusting bolt

PBIC3643E

Lock nut (Final tightening)

: 34.8 N·m (3.5 kg-m, 26 ft-lb)