Infiniti G35 (V35). Manual — part 464

PREPARATION

EM-11

C

D

E

F

G

H

I

J

K

L

M

A

EM

(J-43897-18)
(J-43897-12)
Oxygen sensor thread cleaner

Reconditioning the exhaust system threads
before installing a new heated oxygen sensor
and air fuel ratio sensor (Use with anti-seize
lubricant shown below.)
a = J-43897-18 [18 mm (0.71 in) dia.] for
zirconia heated oxygen sensor
b = J-43897-12 [12 mm (0.47 in) dia.] for
titania heated oxygen sensor

(

—

)

Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL
specification MIL-A-907)

Lubricating heated oxygen sensor and air fuel
ratio sensor thread cleaning tool when
reconditioning exhaust system threads

(Kent-Moore No.)
Tool name

Description

AEM488

AEM489

EM-12

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

PFP:00003

NVH Troubleshooting —Engine Noise

NBS000JM

PBIC3605E

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

EM-13

C

D

E

F

G

H

I

J

K

L

M

A

EM

Use the Chart Below to Help You Find the Cause of the Symptom.

NBS000JN

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

EM-111

Rattle

C

A

—

A

B

C

Camshaft
bearing
noise

Camshaft runout
Camshaft journal oil
clearance

EM-102
EM-103

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 bush-
ing oil clearance

EM-156
EM-159

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-160
EM-157
EM-157
EM-158

Knock

A

B

C

B

B

B

Connect-
ing rod
bearing
noise

Connecting rod bush-
ing oil clearance
Connecting rod bear-
ing oil clearance

EM-159
EM-163

Knock

A

B

—

A

B

C

Main
bearing
noise

Main bearing oil clear-
ance
Crankshaft runout

EM-163
EM-162

Front of
engine
Timing
chain
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-69
EM-62

Front of
engine

Squeak-
ing or fizz-
ing

A

B

—

B

—

C

Drive belts
(Sticking
or slip-
ping)

Drive belts deflection

EM-14

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

CO-23,
"WATER
PUMP"

EM-14

DRIVE BELTS

DRIVE BELTS

PFP:02117

Checking Drive Belts

NBS000JO

WARNING:

Be sure to perform when the engine is stopped.
1.

Inspect belts for cracks, fraying, wear and oil. If necessary, replace.

2.

Inspect drive belt deflection or tension at a point on the belt mid-
way between pulleys.

●

Inspection should be done only when engine is cold, or over
30 minutes after engine is stopped.

●

Measure the belt tension with belt tension gauge (commercial
service tool: BT3373-F or equivalent) at points marked
shown in the figure.

●

When measuring deflection, apply 98 N (10 kg, 22 lb) at the
marked point.

●

Adjust if belt deflection exceeds the limit or if belt tension is
not within specifications.

CAUTION:

●

When checking belt deflection or tension immediately after installation, first adjust it to the speci-
fied value. Then, after turning the crankshaft two turns or more, re-adjust to the specified value to
avoid variation in deflection between pulleys.

●

Tighten idler pulley lock nut by hand and measure the deflection or tension without looseness.

Belt deflection and tension

*

1

: If belt tension gauge cannot be installed at check points shown, check drive belt tension at different location on the belt.

Tension Adjustment

NBS000JP

CAUTION:

●

When belt is replaced with a new one, adjust it to value for “New belt” to accommodate for insuffi-
cient adaptability with pulley grooves.

●

When deflection or tension of belt being used exceeds “Limit”, adjust it to value for “After adjust-
ment”.

●

When checking belt deflection or tension immediately after installation, first adjust it to the speci-
fied value. Then, after turning crankshaft two turns or more, re-adjust to the specified value to
avoid variation in deflection between pulleys.

●

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.

KBIA1731J

Deflection adjustment Unit: mm (in)

Tension adjustment*

1

Unit: N (kg, lb)

Used belt

New belt

Used belt

New belt

Limit

After adjustment

Limit

After adjustment

Alternator and
power steering
oil pump belt

7 (0.28)

4 - 5

(0.16 - 0.20)

3.5 - 4.5

(0.138 - 0.177)

294 (30, 66)

730 - 818

(74.5 - 83.5,

164 - 184)

838 - 926

(85.5 - 94.5,

188 - 208)

A/C compressor
belt

12 (0.47)

9 - 10

(0.35 - 0.39)

8 - 9

(0.31 - 0.35)

196 (20, 44)

348 - 436

(35.5 - 44.5,

78 - 98)

470 - 559

(48 - 57,

106 - 126)

Applied pushing
force

98 N (10 kg, 22 lb)

—

Portion

Belt tightening method for adjustment

Alternator and power steering oil pump belt

Adjusting bolt on idler pulley

A/C compressor belt

Adjusting bolt on idler pulley