1995 NISSAN ALMERA N15 check oil

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

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

Ifdifference isextreme, checkoilpassage andoilpump foroil
leaks.

6. Install oilpressure switchwithsealant.
Approximate
dischargepressure
kPa (bar,
kg/cm
2, psi)
More than78(0.78, 0.8,11)

314 -392 (3.14 -3.92, 3.2-4.0, 46-57)

Engine
speed

rpm

Idle speed

3,200
ENGINE
LUBRICATION SYSTEM ~
Oil Pressure Check(Conl'd)

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

Oil Pump
REMOVAL
1. Remove drivebelts.
2. Remove cylinderhead.(Refer toEM section.)
3. Remove oilpans. (Refer toEM section.)
4. Remove oilstrainer andbaffle plate.
5. Remove frontcover assembly.

DISASSEMBLY ANDASSEMBLY
SLC048B

r~3.7
-
5.0 (0.38 -0.51, 33.0-44.3)

_d!:,
r!il6.4 .
7.5

o -----~
(0.65•0.76, 56.4•66.0)

-----

~

\" ~•.•-7.'

(0.65 •0.76, 56.4-66.0)
~ [OJ16•19 (1.6 -1.9, 12-14)
~[OJ39 -69 (4.0 -7.0, 29-51)

~
liquid gasket

[OJ :N'm (kg-m, ft-Ib)
~ :N.m (kg-m, in-Ib)

I) :
Apply
engine oil.

G)
Oilpump cover

@
Front cover

@
Inner gear

@
Outer gear
@

Regulator valve

@
Spring

(J)
Shims
@

Plug

@
Regulator valveset

@
Oilstrainer

• Always replace oilseal, gasket andO-ring withnewones.
• When installing oilpump, applyengine oiltoinner andouter
gears.
• Besure thatO-rings areproperly fitted.
LC-18

ENGINELUBRICATION SYSTEM
Oil Pump (Cont'd)
INSPECTION

Using afeeler gauge, checkthefollowing clearances:

Unit:mm(in)
Body toouter gearclearance
G)

Inner geartoouter geartipclearance
@
Body toinner gearclearance
@

Body toouter gearclearance
@

Inner geartobrazed portionofhousing
clearance @ 0.114
-0.200 (0.0045 -0.0079)
Below 0.18(0.0071)
0.05 -0.09 (0.0020 -0.0035)
0.05 -0.11 (0.0020 -0.0043)
0.045 -0.091 (0.0018 -0.0036)

• If
the tipclearance (@) exceeds thelimit, replace gearset.
• Ifbody togear clearances
(d),
CID,
@,
CID)
exceed the
limit, replace frontcover assembly.
REGULATOR VALVEINSPECTION

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

If damaged, replaceregulator valvesetoroil pump cover.
SLC049B
SLC451A

@-@=@
4.
Check regulator valvetooil pump cover clearance.

Clearance:
0.040 •0.097 mm(0.0016 •0.0038 in)

If
itexceeds thelimit, replace oilpump cover.
Oil Filter

The oilfilter isasmall, full-flow cartridge typeandisprovided
with arelief valve.

• The new andeXisting oilfilter designs differfromeach other
and arenotinterchangeable.
• Use Tool KV10115801 forremoving oilfilter.
LC-20

ENGINELUBRICATION SYSTEM
SLC926.A Ifdifference isextreme, checkoilpassage andoilpump foroil
leaks.

6. Install oilpressure switchwithsealant.

ST25052000
3.
Install pressure gauge.
4. Start engine andwarm itup tonormal operating tempera-
ture.
5 .. Check oilpressure withengine running underno-load.
•

Approximate dischargepressure
kPa (bar,
kg/cm
2,
psi)
More than59(0.59, 0.6,9)
294 (2.9, 3,43)
Idle
speed
2,000
Engine
rpm

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.

SLC461

Oil
pressure switch

ST25051 001

~ 12.16 N.m

(1.2 .1.6 kg-m, 9-
12 ft.lb) SLC462A
SLC463A Oil
Pump

REMOVAL ANDINSTAllATION

1. Drain engine coolant andengine oil.
2. Remove upperradiator hose,drivebelts, crank pulley, tim-
ing belt covers andtiming belt.
3. Remove exhaustfronttube, timing beltpulley andrear
engine gusset(bartype), thenremove oilpan.
4. Remove oilpump assembly withoilstrainer.
5. Reinstall anypart removed. Refillengine oiland engine
coolant.
• Apply liquidgasket tooil pump.
• Apply liquidgasket tooil pan.
• Apply liquidgasket toboth ends ofoil pan oilseals.
• Install oilpan, fitting oilseals inthe correct position.

LC-27