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