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Nissan Pathfinder (2008 year). Manual - part 373

PREPARATION

EM-147

< PREPARATION >

[VK56DE]

KV10116200
(J-26336-A)
Valve spring compressor
1. KV10115900
(J-26336-20)
Attachment
2. KV10109220
(

—

)

Adapter

Disassembling valve mechanism
Part (1) is a component of KV10116200 (J-
26336-A), but part (2) is not.

KV10107902
(J-38959)
Valve oil seal puller

Removing valve oil seal

KV10115600
(J-38958)
Valve oil seal drift

Installing valve oil seal
Use side A.
a: 20 (0.79) dia.          d: 8 (0.31) dia.
b: 13 (0.51) dia.           e: 10.7 (0.421) dia.
c: 10.3 (0.406) dia.         f: 5 (0.20) dia.
                                              Unit: mm (in)

EM03470000
(J-8037)
Piston ring compressor

Installing piston assembly into cylinder bore

KV10112100
(BT-8653-A)
Angle wrench

Tightening bolts for cylinder head, main bear-
ing cap and connecting rod cap

ST16610001
(J-23907)
Pilot bushing puller

Removing crankshaft pilot bushing

—

(J-45476)
Ring gear stopper

Removing and installing crankshaft pulley

Tool number
(Kent-Moore No.)
Tool name

Description

PBIC1650E

S-NT011

S-NT603

S-NT044

S-NT014

S-NT045

PBIC1655E

EM-148

< PREPARATION >

[VK56DE]

PREPARATION

Commercial Service Tool

INFOID:0000000001282010

(Kent-Moore No.)
Tool name

Description

Power tool

Loosening bolts and nuts

Spark plug wrench

Removing and installing spark plug

(J-24239-01)
Cylinder head bolt wrench

Loosening and tightening cylinder head bolt,
and use with angle wrench [SST: KV10112100
(BT-8653-A)]
a: 13 (0.51) dia.
b: 12 (0.47)
c: 10 (0.39)
Unit: mm (in)

Valve seat cutter set

Finishing valve seat dimensions

Pulley puller

Removing crankshaft pulley

Piston ring expander

Removing and installing piston ring

PBIC0190E

S-NT047

NT583

S-NT048

ZZA0010D

S-NT030

PREPARATION

EM-149

< PREPARATION >

[VK56DE]

Valve guide drift

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

Valve guide reamer

1: Reaming valve guide hole
2: Reaming hole for oversize valve guide
Intake & Exhaust:
d

: 6.0 mm (0.236 in) dia.

: 10.175 - 10.196 mm (0.4006 - 0.4014 in)

dia.

Front oil seal drift

Installing front oil seal

Rear oil seal drift

Installing rear oil seal

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

Reconditioning the exhaust system threads
before installing a new Air Fuel Ratio sensor
and heated oxygen sensor (Use with anti-
seize lubricant shown below.)
a: J-43897-18 (18 mm dia.) (0.71 in)
b: J-43897-12 (12 mm dia.) (0.55 in)

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

Lubricating A/F sensors and heated oxygen
sensor thread cleaning tool when recondition-
ing exhaust system threads

(Kent-Moore No.)
Tool name

Description

S-NT015

S-NT016

ZZA0012D

ZZA0025D

AEM488

AEM489

EM-150

< FUNCTION DIAGNOSIS >

[VK56DE]

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

FUNCTION DIAGNOSIS

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting - Engine Noise

INFOID:0000000001282011

AWBIA0149ZZ

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

EM-151

< FUNCTION DIAGNOSIS >

[VK56DE]

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

INFOID:0000000001282012

Locate the area where noise occurs.

Confirm the type of noise.

Specify the operating condition of engine.

Check specified noise source.

If necessary, repair or replace these parts.

Timing chain

Intake valve

Exhaust valve

Drive belt

Water pump

VTC noise

Tappet noise

Camshaft bearing noise

Valve mechanism

Rotation mechanism

Piston pin noise

Piston slap noise

Main bearing noise

Connecting rod bearing noise

Drive belt noise (slipping)

Drive belt noise (stick/slipping)

Water pump noise

Timing chain and chain tensioner noise

Location of

noise

Type of

noise

Operating condition of engine

Source of

noise

Check item

Refer-

ence page

Be-

fore

warm-

After

warm-

When

start-

ing

When

idling

When

racing

While

driv-

ing

Top of en-
gine
Rocker cov-
er
Cylinder
head

Ticking or
clicking

—

Tappet noise

Valve clearance

EM-212

Rattle

—

Camshaft
bearing noise

Camshaft journal clear-
ance
Camshaft runout

EM-202
EM-202

Crankshaft
pulley
Cylinder
block (Side
of engine)
Oil pan

Slap or
knock

—

Piston pin
noise

Piston and piston pin
clearance
Connecting rod bushing
clearance

EM-230
EM-230

Slap or
rap

—

Piston slap
noise

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

EM-230
EM-230
EM-230
EM-230

Knock

Connecting
rod bearing
noise

Connecting rod bushing
oil clearance (Small
end)
Connecting rod bearing
clearance (Big end)

EM-230
EM-230

Knock

—

Main bearing
noise

Main bearing oil clear-
ance
Crankshaft runout

EM-230
EM-230

Front of en-
gine
Chain case
cover
Front cover

Tapping
or ticking

—

Timing chain
and chain
tensioner
noise

Timing chain cracks
and wear
Timing chain tensioner
operation

EM-185
EM-185

EM-152

< FUNCTION DIAGNOSIS >

[VK56DE]

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

A: Closely related

B: Related

C: Sometimes related

—: Not related

Front of en-
gine

Squeak-
ing or
fizzing

—

Drive belts
(Sticking or
slipping)

Drive belts deflection

EM-153

Creaking

Drive belts
(Slipping)

Idler pulley bearing op-
eration

Squall
Creaking

—

Water pump
noise

Water pump operation

CO-49

Rattle

—

VTC

VTC lock pin clearance

EM-202

Location of

noise

Type of

noise

Operating condition of engine

Source of

noise

Check item

Refer-

ence page

Be-

fore

warm-

After

warm-

When

start-

ing

When

idling

When

racing

While

driv-

ing

DRIVE BELTS

EM-153

< ON-VEHICLE MAINTENANCE >

[VK56DE]

ON-VEHICLE MAINTENANCE

DRIVE BELTS

Checking Drive Belts

INFOID:0000000001282014

WARNING:

Be sure to perform when the engine is stopped.

Remove air duct and resonator assembly when inspecting drive belt.

Make sure that indicator (single line notch) of each auto tensioner is within the allowable working range
“A” (between three line notches) as shown.
NOTE:
• Check the drive belt auto tensioner indication when the engine is cold.
• The indicator notch is located on the moving side of the drive belt auto tensioner.

Visually check entire belt for wear, damage or cracks.

If the indicator is out of allowable working range or belt is damaged, replace the belt. Refer to

EM-153,

"Removal and Installation"

DRIVE BELT TENSION

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

Removal and Installation

INFOID:0000000001282015

REMOVAL

Remove the air duct and resonator assembly. Refer to

EM-165, "Removal and Installation"

Drive belt

Power steering pump pulley

Generator pulley

Crankshaft pulley

A/C compressor

Idler pulley

Cooling fan pulley

Water pump pulley

Drive belt auto tensioner

Allowable working range

LBIA0391E

EM-154

< ON-VEHICLE MAINTENANCE >

[VK56DE]

DRIVE BELTS

Install Tool on drive belt auto tensioner pulley bolt, move in the
direction of arrow (loosening direction of tensioner) as shown.

CAUTION:

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

Remove the drive belt.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

Make sure belt is securely installed around all pulleys.
• Rotate the crankshaft pulley several turns clockwise to equalize belt tension between pulleys.
• Make sure belt tension is within the allowable working range, using the indicator notch on the drive belt auto

tensioner. Refer to

EM-153, "Checking Drive Belts"

Drive Belt Auto Tensioner and Idler Pulley

INFOID:0000000001282016

REMOVAL

Remove the air duct and resonator assembly. Refer to

EM-165, "Removal and Installation"

Remove the drive belt. Refer to

EM-153, "Removal and Installation"

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

INSTALLATION

Installation is in the reverse order of removal.