Infiniti M35/M45 Y50. Manual — part 341
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PREPARATION
CO-5
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
CO
PREPARATION
PFP:00002
Special Service Tools
NBS004QL
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
Description
KV99103510
(
—
)
Radiator plate pliers A
Installing radiator upper and lower tanks
KV99103520
(
—
)
Radiator plate pliers B
Removing radiator upper and lower tanks
KV10111100
(J37228)
Seal cutter
Removing chain tensioner cover and water
pump cover
S-NT224
S-NT225
NT046
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CO-6
[VQ35DE]
PREPARATION
Commercial Service Tools
NBS004QM
Tool name
Description
Tube presser
Pressing the tube of liquid gasket
Power tool
Loosening nuts and bolts
Radiator cap tester
Checking radiator and radiator cap
Radiator cap tester adapter
Adapting radiator cap tester to radiator cap
and radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
S-NT052
PBIC0190E
PBIC1982E
S-NT564
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OVERHEATING CAUSE ANALYSIS
CO-7
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
CO
OVERHEATING CAUSE ANALYSIS
PFP:00012
Troubleshooting Chart
NBS004QN
Symptom
Check items
Cooling sys-
tem parts
malfunction
Poor heat transfer
Water pump malfunction
Worn or loose drive belt
—
Thermostat stuck closed
—
Damaged fins
Dust contamination or
paper clogging
Physical damage
Clogged radiator cooling
tube
Excess foreign material
(rust, dirt, sand, etc.)
Reduced air flow
Cooling fan does not oper-
ate
Fan assembly
—
High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud
—
—
—
Improper engine coolant
mixture ratio
—
—
—
Poor engine coolant quality
—
Engine coolant density
—
Insufficient engine coolant
Engine coolant leaks
Cooling hose
Loose clamp
Cracked hose
Water pump
Poor sealing
Radiator cap
Loose
Poor sealing
Radiator
O-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank
Cracked reservoir tank
Overflowing reservoir tank
Exhaust gas leaks into
cooling system
Cylinder head deterioration
Cylinder head gasket dete-
rioration
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CO-8
[VQ35DE]
OVERHEATING CAUSE ANALYSIS
Except cool-
ing system
parts mal-
function
—
Overload on engine
Abusive driving
High engine rpm under no
load
Driving in low gear for
extended time
Driving at extremely high
speed
Powertrain system mal-
function
—
Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flow
Blocked bumper
—
—
Blocked radiator grille
Installed car brassiere
Mud contamination or
paper clogging
Blocked radiator
—
Blocked condenser
Blocked air flow
Installed large fog lamp
Symptom
Check items
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