Nissan Pathfinder (2009 year). Manual - part 369

PREPARATION

EM-9

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Commercial Service Tool

INFOID:0000000003939470

KV991J0120
(J-47128)
Seal installer

Installing rear main seal

—

(J-48761)
Ring gear stopper

Removing and installing crankshaft pulley

Tool number
(Kent-Moore No.)
Tool name

Description

LBIA0452E

ALBIA0523ZZ

Tool number
(Kent-Moore No.)
Tool name

Description

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Power tool

Loosening nuts and bolts

KV991J0100
(J-46531)
TORX socket

Removing and installing flywheel
Size: T55

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Spark plug wrench

Removing and installing spark plug

(J-24239-01)
Cylinder head bolt wrench

Loosening and tightening cylinder head bolt, 
and used with angle wrench [SST: 
KV10112100 (BT8653-A)]
a: 13 (0.51) dia.
b: 12 (0.47)
c: 10 (0.39)
Unit: mm (in)

PBIC0190E

PBIC1113E

NT047

NT583

2009 Pathfinder

EM-10

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PREPARATION

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Valve seat cutter set

Finishing valve seat dimensions

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Piston ring expander

Removing and installing piston ring

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Valve guide drift

Removing and installing valve guide
Intake and Exhaust:
a: 9.5 mm (0.374 in) dia.
b: 5.5 mm (0.217 in) dia.

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Valve guide reamer

(1): Reaming valve guide inner hole
(2): Reaming hole for oversize valve guide
Intake and Exhaust:
d

1

: 6.0 mm (0.236 in) dia.

d

2

: 10.175 - 10.196 mm (0.4006 - 0.4014 in) 

dia.

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

Reconditioning the exhaust system threads 
before installing a new heated oxygen sensor 
(Use with anti-seize lubricant shown below.)
a: J-43897-18 [18 mm (0.71 in) dia.] for zir-
conia heated oxygen sensor
b: J-43897-12 [12 mm (0.47 in) dia.] for tita-
nia heated oxygen sensor

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

Lubricating oxygen sensor thread cleaning 
tool when reconditioning exhaust system 
threads

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Manual lift table caddy

Removing and installing engine 

Tool number
(Kent-Moore No.)
Tool name

Description

NT048

NT030

NT015

NT016

AEM488

AEM489

ZZA1210D

2009 Pathfinder

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

EM-11

< FUNCTION DIAGNOSIS >

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FUNCTION DIAGNOSIS

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting - Engine Noise

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

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1.

Locate the area where noise occurs.

PBIC2873E

2009 Pathfinder

EM-12

< FUNCTION DIAGNOSIS >

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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

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 en-
gine
Rocker 
cover
Cylinder 
head

Ticking or 
clicking

C

A

—

A

B

—

Tappet 
noise

Valve clearance

EM-18

Rattle

C

A

—

A

B

C

Camshaft 
bearing 
noise

Camshaft runout
Camshaft journal oil 
clearance

EM-81
EM-81

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-118

 

EM-118

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-118
EM-118
EM-118
EM-118

Knock

A

B

C

B

B

B

Connect-
ing rod 
bearing 
noise

Connecting rod bushing 
oil clearance
Connecting rod bearing 
oil clearance

EM-118
EM-118

Knock

A

B

—

A

B

C

Main bear-
ing noise

Main bearing oil clear-
ance
Crankshaft runout

EM-118
EM-118

Front of 
engine
Timing 
chain case

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-61
EM-61

Front of 
engine

Squeak-
ing or fizz-
ing

A

B

—

B

—

C

Drive belts 
(Sticking 
or slip-
ping)

Drive belts deflection

EM-13

Creaking

A

B

A

B

A

B

Drive belts 
(Slipping)

Idler pulley bearing op-
eration

Squall
Creak

A

B

—

B

A

B

Water 
pump 
noise

Water pump operation

CO-22

Rattle

—

—

A

—

—

—

VTC

VTC lock pin clearance

EM-61

2009 Pathfinder

DRIVE BELTS

EM-13

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ON-VEHICLE MAINTENANCE

DRIVE BELTS

Exploded View

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Checking Drive Belts

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WARNING:

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

Remove air duct and resonator assembly when inspecting drive belt. Refer to 

EM-25, "Removal and

Installation"

.

2.

Make sure that the auto tensioner indicator is within the allow-
able working range (A) as shown.

3.

Visually check entire belt for wear, damage or cracks.

4.

If the indicator is out of the allowable range or drive belt is dam-
aged, replace the drive belt. Refer to 

EM-13, "Removal and

Installation"

.

Adjustment

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There is no manual drive belt tension adjustment. The drive belt tension is automatically adjusted by the drive
belt auto tensioner.

Removal and Installation

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REMOVAL

1.

Remove air duct and resonator assembly. Refer to 

EM-25, "Removal and Installation"

.

LBIA0427E

1.

Drive belt

2.

Power steering oil pump pulley

3.

Generator pulley

4.

Crankshaft pulley

5.

A/C compressor

6.

Cooling fan pulley

7.

Idler pulley

8.

Drive belt tensioner

AWBIA0723ZZ

2009 Pathfinder

EM-14

< ON-VEHICLE MAINTENANCE >

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DRIVE BELTS

2.

Rotate the drive belt auto tensioner in the direction of arrow
(loosening direction of tensioner) as shown, using suitable tool.

WARNING:

Avoid placing hand in a location where pinching may occur
if the tool accidentally comes off.

3.

Remove the drive belt. 

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

Make sure belt is securely installed around all pulleys.

Drive Belt Auto Tensioner and Idler Pulley

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REMOVAL

1.

Remove air duct and resonator assembly. Refer to 

EM-25, "Removal and Installation"

.

2.

Remove drive belt. Refer to 

EM-13, "Removal and Installation"

.

3.

Remove engine cooling fan assembly (motor driven type). Refer to 

CO-20, "Removal and Installation

(Motor driven type)"

.

4.

Remove drive belt auto tensioner and idler pulley using power tool.

INSTALLATION

Installation is in the reverse order of removal.

LBIA0428E

LBIA0429E

1.

Idler pulley

2.

Drive belt auto tensioner

2009 Pathfinder

AIR CLEANER FILTER

EM-15

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AIR CLEANER FILTER

Exploded View

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Removal and Installation

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REMOVAL

1.

Unhook clips, and lift air cleaner case (upper).

2.

Remove air cleaner filter.

INSTALLATION

Installation is in the reverse order of removal.

1.

Air cleaner case (lower)

2.

Air cleaner filter

3.

Air cleaner case (upper)

4.

Air duct and resonator

Front

AWBIA0133GB

2009 Pathfinder

EM-16

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SPARK PLUG

SPARK PLUG

Exploded View

INFOID:0000000003939480

Removal and Installation

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REMOVAL

1.

Remove engine room cover using power tool. Refer to 

EM-24, "Removal and Installation"

.

2.

Remove ignition coil. Refer to 

EM-40, "Removal and Installation"

.

3.

Remove spark plug using suitable tool.

CAUTION:

Do not drop or shock it.

INSPECTION AFTER REMOVAL

• Do not use a wire brush for cleaning.

• If the spark plug tip is covered with carbon, a spark plug cleaner may be used.

1.

Ignition coil

2.

Spark plug

PBIC2901E

SEM294A

SMA773C

2009 Pathfinder