Infiniti Q45. Manual — part 548
PREPARATION
EM-9
C
D
E
F
G
H
I
J
K
L
M
A
EM
(
—
)
Piston ring expander
Removing and installing piston ring
(
—
)
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 inner hole
2: Reaming hole for oversize valve guide
Intake & Exhaust:
d
1
: 6.0 mm (0.236 in) dia.
d
2
: 10.2 mm (0.402 in) dia.
(
—
)
Front oil seal drift
Installing front oil seal when front cover is
removed
(
—
)
Rear oil seal drift
Installing rear oil seal
a: (J-43897-18)
b: (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 [18mm (0.71 in) dia.] for
zirconia heated oxygen sensor and air fuel
ratio sensor
b: J-43897-12 [12mm (0.47 in) dia.] for
titania heated oxygen sensor and air fuel
ratio sensor
(Kent-Moore No.)
Tool name
Description
S-NT030
S-NT015
S-NT016
ZZA0012D
ZZA0025D
AEM488
EM-10
PREPARATION
(
—
)
Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL
specification MIL-A-907)
Lubricating heated oxygen sensor thread
cleaning tool when reconditioning exhaust
system threads
(
—
)
Manual lift table caddy
Removing and installing engine
(Kent-Moore No.)
Tool name
Description
AEM489
ZZA1210D
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
EM-11
C
D
E
F
G
H
I
J
K
L
M
A
EM
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
PFP:00003
NVH Troubleshooting —Engine Noise
NBS001OC
PBIC2865E
EM-12
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Use the Chart Below to Help You Find the Cause of the Symptom.
NBS001OD
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
Rattle
C
A
—
A
B
C
Camshaft
bearing noise
Camshaft journal clear-
ance
Camshaft runout
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil pan
Slap or
knock
—
A
—
B
B
—
Piston pin
noise
Piston and piston pin
clearance
Connecting rod bush-
ing oil clearance
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
Knock
A
B
C
B
B
B
Connecting
rod bearing
noise
Connecting rod bush-
ing oil clearance
Connecting rod bear-
ing clearance (Big end)
Knock
A
B
—
A
B
C
Main bearing
noise
Main bearing oil clear-
ance
Crankshaft runout
Front of
engine
Timing
chain
cover
Tapping or
ticking
A
A
—
B
B
B
Timing chain
and chain
tensioner
noise
Timing chain cracks
and wear
Chain tensioner opera-
tion
Front of
engine
Squeak-
ing or fizz-
ing
A
B
—
B
—
C
Drive belts
(Sticking or
slipping)
Drive belts deflection
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
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