Nissan Frontier Cooling Systems LC 2000 Owner's Manual
ENGINE LUBRICATION &
COOLING SYSTEMS
SECTION LC
GI
MA
EM
LC
EC
CONTENTS
PREPARATION/PRECAUTION.......................................2
Special Service Tools ..................................................2
Liquid Gasket Application Procedure..........................3
ENGINE LUBRICATION SYSTEM..................................4
Lubrication Circuit........................................................4
Oil Pressure Check......................................................4
Oil Pump......................................................................5
Removal And Installation........................................5
Disassembly And Assembly....................................5
Inspection................................................................6
Regulator Valve Inspection .....................................6
Oil Filter...................................................................6
Oil Filter Bracket .....................................................7
ENGINE COOLING SYSTEM..........................................8
Cooling Circuit .............................................................8
System Check..............................................................8
Checking Cooling System Hoses ...........................8
Checking Cooling System For Leaks .....................8
Checking Radiator...................................................8
Checking Radiator Cap...........................................9
Water Pump...............................................................10
Removal And Installation ......................................10
Inspection..............................................................11
Thermostat.................................................................11
Removal................................................................11
Inspection..............................................................11
Installation.............................................................12
Radiator .....................................................................12
Removal And Installation ......................................12
Cooling Fan (Crankshaft driven) ...............................13
Removal And Installation ......................................13
Inspection..............................................................14
Refilling Engine Coolant............................................14
Inspection..............................................................14
Overheating Cause Analysis .....................................15
SERVICE DATA AND SPECIFICATIONS (SDS) ..........16
Engine Lubrication System........................................16
Oil pressure......................................................16
Regulator valve.................................................16
Oil pump...........................................................16
Engine Cooling System.............................................16
Thermostat........................................................16
Radiator............................................................16
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PREPARATION/PRECAUTION
Special Service Tools
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
ST25051001
(J25695-1)
Oil pressure gauge
Description
Measuring oil pressure
ST25052000
(J25695-2)
Hose
KV10115801
(J38956)
Oil filter wrench
EG17650301
(J33984-A)
Radiator cap tester adapter
WS39930000
(—)
Tube presser
NT558
NT559
NT362
NT564
Maximum measuring range:
2,452 kPa (25 kg/cm
Adapting oil pressure gauge to cylinder block
Removing oil filter
Adapting radiator cap tester to radiator filler
neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
Pressing the tube of liquid gasket
2
, 356 psi)
NT052
LC-2
PREPARATION/PRECAUTION
SEM371C
AEM080
Liquid Gasket Application Procedure
a. Use a scraper to remove all traces of old liquid gasket
from mating surface and grooves. Also, completely clean
any oil from these areas.
b. Apply a continuous bead of liquid gasket to mating sur-
faces. (Use Genuine RTV silicone sealant part No. 999
MP-A7007 or equivalent.)
●
Be sure liquid gasket is 3.5 to 4.5 mm (0.138 to 0.177 in)
dia. (for oil pan).
●
Be sure liquid gasket is 2.0 to 3.0 mm (0.079 to 0.118 in)
dia. (in areas except oil pan).
c. Apply liquid gasket around the inner side of bolt holes
(unless otherwise specified).
d. Assembly should be done within 5 minutes after coating.
e. Wait at least 30 minutes before refilling engine oil and
engine coolant.
GI
MA
EM
LC
EC
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LC-3
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ENGINELUBRICATIONSYSTEM
LubricationCircuit
SLC082B
ALC120
SLC926
OilPressureCheck
WARNING:
●
Becarefulnottoburnyourself,astheengineandoilmay
behot.
●
Oilpressurecheckshouldbedonein‘‘Neutralposition’’
(M/T)or‘‘Parkingposition’’(A/T).
1. Checkoillevel.
2. Removeoilpressureswitch.
3. Installpressuregauge.
4. Startengineandwarmituptonormaloperatingtemperature.
5. Checkoilpressurewithenginerunningunderno-load.
Enginespeed
rpm
Idlespeed Morethan59(0.6,9)
2,000 412-451(4.2-4.6,60-65)
Ifdifferenceisextreme,checkoilpassageandoilpumpforoil
leaks.
6. Installoilpressureswitchwithsealant.
:12.25-17.15Nzm(1.3-1.7kg-m,9-12ft-lb)
Approximatedischargepressure
kPa(kg/cm
2
,psi)
LC-4
ENGINE LUBRICATION SYSTEM
Oil Pump
REMOVAL AND INSTALLATION
1. Drain engine oil.
2. Drain engine coolant from drain plug on radiator.
3. Remove air duct (from mass air flow sensor to throttle body).
4. Remove cooling fan.
5. Remove radiator hoses (upper and lower) and fan shroud.
Refer to ‘‘Radiator’’.
6. Remove drive belts. Refer to MA section (‘‘Checking Drive
Belts’’).
7. Remove crankshaft pulley and front upper and lower belt cov-
ers. Refer to EM section (‘‘TIMING BELT’’).
8. Remove oil pan. Refer to EM section (‘‘OIL PAN’’).
9. Remove oil strainer.
10. Remove oil pump assembly.
DISASSEMBLY AND ASSEMBLY
GI
MA
EM
LC
EC
FE
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MT
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●
Always replace with new oil seal and gasket.
●
When installing oil pump, apply engine oil to inner and
outer gears.
●
Be sure that O-ring is properly installed.
SLC117B
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LC-5
EL
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