Infiniti I35 (A33). Manual — part 555
ENGINE LUBRICATION &
COOLING SYSTEMS
CONTENTS
ENGINE LUBRICATION SYSTEM. . . . . . . . ..2
Precautions . . . . . . . . . . . . . . . . ..2
PRECAUTIONS FOR SUPPLEMENTAL
RESTRAINT SYSTEM (SRS)
. . . . . . . . .2
LIQUID GASKET APPLICATION PROCEDURE
. . . 2
Preparation . . . . . . . . . . . . . . . . ..3
. . . . . . . . . . 3
Lubrication Circuit . . . . . . . . . . . . . . 4
Oil Pressure Check. . . . . . . . . . . . . ..6
Oil Pump . . . . . . . . . . . . . . . . . ..6
. . . . . . . . .6
. . . . . . . . . . . 7
. . . . . . . 8
Oil Filter . . . . . . . . . . . . . . . . . ...8
Oil Cooler. . . . . . . . . . . . . . . . . .9
. . . . . . . . .9
. . . . . . . . . . . . . . . .9
Service Data and Specifications (SDS). . . . . .10
. . . . . . . . . . . . . ..10
. . . . . . . . . . . ...10
. . . . . . . . . . . . . . . ...10
ENGINE COOLING SYSTEM. . . . . . . . . . 11
Precautions . . . . . . . . . . . . . . . . 11
LIQUID GASKET APPLICATION PROCEDURE
. . .. 11
Preparation . . . . . . . . . . . . . . . . 11
. . . . . . . . . .. 11
Cooling Circuit . . . . . . . . . . . . . . ...12
System Check. . . . . . . . . . . . . . . 12
. . . . ...12
. . . . . . . . . . . 12
. . . . . . . . . 13
CHECKING COOLING SYSTEM FOR LEAKS
. . . 13
Water Pump . . . . . . . . . . . . . . . ...14
. . . . . . . ...14
. . . . . . . . . . . . . . . ...14
. . . . . . . . . . . . . . ...16
. . . . . . . . . . . . . . 16
Thermostat. . . . . . . . . . . . . . . . .18
. . . . . . . ...18
. . . . . . . . . . . . . . ...18
Water Outlet and Water Piping. . . . . . . . ..19
. . . . . . . ...19
Radiator . . . . . . . . . . . . . . . . . .20
. . . . . . . ...20
Cooling Fan Control System . . . . . . . . . .21
Refilling Engine Coolant . . . . . . . . . . . 21
Radiator (Aluminum type). . . . . . . . . . ..21
. . . . . . . . . . . . . ...21
. . . . . . . . . . . . . . 22
. . . . . . . . . . . . . . . .22
. . . . . . . . . . . . . . ...24
Overheating Cause Analysis . . . . . . . . . .25
Service Data and Specifications (SDS). . . . . .26
. . . . . . . . . . . . . . 26
. . . . . . . . . . . . . . . ..26
GI
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Precautions
PRECAUTIONS FOR SUPPLEMENTAL RESTRAINT SYSTEM (SRS) “AIR BAG” AND “SEAT
BELT PRE-TENSIONER”
NHLC0036
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with
a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types
of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS sys-
tem uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air
bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information that is necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
I
To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed
by an authorized NISSAN/INFINITI dealer.
I
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the RS section.
I
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
SEM164F
AEM080
LIQUID GASKET APPLICATION PROCEDURE
NHLC0001
1.
Use a scraper to remove all traces of old liquid gasket from
mating surfaces and grooves. Also, completely clean any oil
from these areas.
2.
Apply a continuous bead of liquid gasket to mating surfaces.
(Use Genuine RTV silicone sealant or equivalent. Refer to
GI-53.)
I
For oil pan, be sure liquid gasket diameter is 3.5 to 4.5 mm
(0.138 to 0.177 in) or 4.5 to 5.5 mm (0.177 to 0.217 in) as
specified in this manual.
3.
Apply liquid gasket around the inner side of bolt holes (unless
otherwise specified).
4.
Assembly should be done within 5 minutes after coating.
5.
Wait at least 30 minutes before refilling engine oil and engine
coolant.
ENGINE LUBRICATION SYSTEM
Precautions
LC-2
Preparation
SPECIAL SERVICE TOOLS
=NHLC0002
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
ST25051001
(J25695-1)
Oil pressure gauge
NT558
Measuring oil pressure
Maximum measuring range:
2,452 kPa (25 kg/cm
2
, 356 psi)
ST25052000
(J25695-2)
Hose
NT559
Adapting oil pressure gauge to upper oil pan
WS39930000
(
—
)
Tube pressure
NT052
Pressing the tube of liquid gasket
GI
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ENGINE LUBRICATION SYSTEM
Preparation
LC-3
Lubrication Circuit
NHLC0003
SLC489BB
ENGINE LUBRICATION SYSTEM
Lubrication Circuit
LC-4
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