1995 NISSAN ALMERA N15 check engine

ENGINELUBRICATION
&

COOLING SYSTEMS
SECTION
LC
CONTENTS
•

PRECAUTION
2

PREPARATION
3

GA

ENGINE LUBRICATION SYSTEM
5

Lubrication Circuit.. 5
Oil Pressure Check 6
Oil Pump 7
ENGINE COOLING SySTEM 9
Cooling Circuit 9
Water HoseDrawing 10
System Check 12
Water Pump 13
Thermostat 14
Water Outlet 15
Radiator 16
SR
ENGINE LUBRICATION SYSTEM 17
Lubrication Circuit. 17
Oil Pressure Check 17
Oil Pump 18
Oil FiIter 20
ENGINE COOLING SYSTEM 21
Cooling Circuit 21
System Check 21
Cooling SystemInspection 21
Water Pump 22
Thermostat 23
Water Outlet 24
Radiator 25CO
ENGINE LUBRICATION SYSTEM 26
Lubrication Circuit... 26
Oil Pressure Check 27
Oil Pump ,27
Oil Cooler 30
ENGINE COOLING SYSTEM 31
Cooling Circuit 31
System Check 32
Water Pump ,33
Thermostat 34
Radiator 35
GA,SR,CO
ENGINE COOLING SYSTEM 37
Radiator (Aluminum type) 37
GA,SR
SERVICE DATAANDSPECIFICATIONS (SOS)40
Engine Lubrication System(GA) 40
Engine Cooling System(GA) 40
Engine Lubrication System(SR) 40
Engine Cooling System(SR) 40
CO
SERVICE DATAANDSPECIFICATIONS (SOS)41
Engine Lubrication System .41
Engine Cooling System 41

ENGINELUBRICATION SYSTEM

3. Install pressure gauge.
4. Start engine andwarm itup tonormal operating tempera-
ture.
5. Check oilpressure withengine running underno-load.

If difference isextreme, checkoilpassage andoilpump foroil
leaks.

6. Install oilpressure switchwithsealant.

Oil
Pressure Check
WARNING: • Becareful nottoburn yourself, asthe engine andoilmay
be hot.
• Oilpressure checkshould bedone in"Neutral" gearposi-
tion.

1. Check oillevel.
2. Remove oilpressure switch.

ST25051001 SLC926-A
Engine
speed
rpm
Idle speed
2,000
6,000 Approximate
dischargepressure
kPa (bar,
kg/cm
2,
psi)
More than59(0.59, 0.6,9)
More than245(2.45, 2.5,36)
More than422(4.22, 4.3,61)

LC-6

ENGINELUBRICATION SYSTEM
SEC.
135.150

lil
N.m(kg-m, in-Ib)
~. N.m(kg-m, ft-Ib)

rJ .
Liquid gasket
Oil
Pump

Frontcover side

a~:oo"

Oil pump
cover side

SLC985AA
•

CD
Oilpump cover

@
Inner gear

@
Outer gear

@
Front cover
I])

O-ring

@J
Oilstrainer

(J)
Regulator valve
@

Spring

@
Washer

@)
Plug
Spring]
I

Regulator valve
7
I
REGULATOR
VALVEINSPECTION

1. Visually inspectcomponents forwear anddamage.
2. Check oilpressure regulator valvesliding surface andvalve
spring.
3. Coat regulator valvewithengine oil.Check thatitfalls freely
into thevalve holebyitsown weight.

If damaged, replaceregulator valvesetoroil pump assembly.
SLC986A OILPRESSURE RELIEFVALVEINSPECTION

Inspect oilpressure reliefvalve formovement, cracksand
breaks bypushing theball. Ifreplacement isnecessary, remove
valve byprying itout with suitable tool.
Front Installanew valve inplace bytapping it.

•
Cylinder
block

SLC418A
LC-7

0.045-0.091 (0.0018 -0.0036)
0.110
-0.200 (0.0043 -0.0079)
0.217 -0.327 (0.0085 -0.0129)
0.21 -0.32 (0.0083 -0.0126)
0.05 -0.09 (0.0020 -0.0035)
0.05 -0.11 (0.0020 -0.0043)

Body
toouter gearclearance
CD

Inner geartocrescent clearance @
Outer geartocrescent clearance
@

Body toinner gearclearance @
Body toouter gearclearance @
Inner geartobrazed portionof
housing clearance
@

• Ifthe tipclearance (@)exceeds thelimit, replace gearset.
• Ifbody togear clearances (
(1), ~,
@,
@,
@)
exceed the
limit, replace frontcover assembly.

Using
afeeler gauge, checkthefollowing clearance.

Unit:mm(in)

SLC420A
ENGINE
LUBRICATION SYSTEM
Oil Pump (ConI'd)
DISASSEMBLY ANDASSEMBLY
• Always replace oilseal withanew one.
• When installing oilpump, applyengine oiltogears.
• Make surethatO-ring isfitted properly.
OIL PUMP INSPECTION
Feeler gauge
SLC419A
b SLC222A
LC-8

ENGINECOOLING SYSTEM
System Check

WARNING: Never remove theradiator capwhen theengine ishot; serious
burns couldbecaused byhigh pressure fluidescaping fromthe
radiator.
Wrap athick cloth around capandcarefUlly loosenita quarter
turn torelease built-uppressure. Thenremove thecap com-
pletely.

CHECKING COOLINGSYSTEMHOSES

Check hosesforimproper attachment, leaks,cracks, damage,
loose connections, chafinganddeterioration.

CHECKING RADIATORCAP

To check radiator cap,apply pressure tocap with atester.
Radiator caprelief pressure:
Standard
78 -98 kPa
(0.78 -0.98 bar,0.8-1.0 kg/cm
2,
11-14 psi)
Limit
59 -98 kPa
(0.59 -0.98 bar,0.6-1.0 kg/cm
2,
9-14 psi)

SLC613-A
Pullthenegative pressure valvetoopen it.Check thatitcloses
completely whenreleased.

CHECKING COOLINGSYSTEMFORLEAKS

To check forleakage, applypressure tothe cooling systemwith
a tester.
Testing pressure:
157 kPa (1.57 bar,1.6kg/cm
2,
23psi)
CAUTION: Higher thanthespecified pressure maycause radiator damage.

SLC422A LC-12

ENGINECOOLING SYSTEM

IiJ
6.28 -8.34 (0.641 -0.851, 55.6-73.8)

SEC.
210 Water
Pump

~ 6.28 -8.34 (0.641 -0.851, 55.6-73.8)

WaterpumppUlley
l

~Liquid gasket
~ N.m(kg-m, in-Ib)

SLC989AB
•

CAUTION:
• When removing waterpumpassembly, becareful nottoget
coolant ontiming chain.
• Water pumpcannot bedisassembled andshould be
replaced asaunit.
• After installing waterpump, connect hoseandclamp
securely, thencheck forleaks using radiator captester.
REMOVAL
1. Drain coolant fromradiator andcylinder block.
2. Remove drivebeltsforcompressor, powersteering pump
and alternator.
3. Remove waterpumppulley.
4. Remove waterpump.

INSPECTION
1. Check bodyassembly forrust orcorrosion.
2. Check forrough operation duetoexcessive endplay.

SLC162A LC-13

ENGINECOOLING SYSTEM
Water Pump(Cont'd)
INST ALLATION

Use ascraper toremove liquidgasket fromwater pump.

Be sure liquid gasket ingrooves isalso removed.

• Remove liquidgasket frommating surface offront cover.
• Remove alltraces ofliquid gasket usingwhitegasoline.

SLC425A
•Apply liquidgasket tomating surface ofpump housing as
shown.

SLC426A

[J
Liquid gasket
Thermostat housing
7

Ther~st~

W"",?~: .

~. ~~628-634

~ P"L' 'd
(0.641-0.851,
~ IqUI gasket 55.6_73.8)
~6.28 -8.34 (0.641 -0.851, 55.6-73.8)
~: N.m(kg-m. in-Ib) SLC990ACThermostat
INSPECTION
1. Check forvalve seating condition atordinary temperatures.

It
should seattightly.

Up

11
Jiggle
valve
(top side)
SLC499A
SLC343
2.
Check valveopening temperature andmaximum valvelift.

Valve opening temperature °C
CF)
76.5(170)
Valve
lift
mml"C(inI"F) Morethan8190(0.311194)

3. Then check ifvalve closes at5°C (9°F) below valveopening
temperature.

• After installation, runengine forafew minutes, andcheck
for leaks.
LC-14

ENGINELUBRICATION SYSTEM
Lubrication Circuit
... Return
~Feed Oil
tube
Camshaft
--Hydraulic lashadjuster
Oil pan
SLC0248
•

Oil passage
.- :Oil gallery

4-. - .
By-pass passage
....--. Tooilpan
SLC0258
~~
9

Oil pressure switch
~If SLC518A Oil
Pressure Check

WARNING:
• Becareful nottoburn yourself, asthe engine andoilmay
be hot.
• Oilpressure checkshould bedone in"Neutral position".

1. Check oillevel.
2. Remove oilpressure switch.

LC-17