NISSAN ALMERA N15 1995 Service Manual

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

SLC428A
SLC429A
•

Water Outlet
INSPECTION

Visually inspectforwater leaks. Ifthere isleakage, applyliq-
uid gasket.

INSTALLATION

When installing wateroutlet, applyliquid gasket asshown.

ENGINE
COOLING SYSTEM
Thermostat (Cont'd)
INSTALLATION

When installing waterinletapply liquidgasket asshown .

SLC430A

2.0.3.0

mm

(0.079 •0.118 In)die.
LC-15

SEC.214

10

~ :N.m (kg-m, in-Ib)
ENGINE
COOLING SYSTEM
Radiator

~~ 3.7.5.0(0.38-0.51, 33.0•44.3)
~~ 3.8.4.5 (0.39 •0.46, 33.9.39.9)

. I
L!
\[jj
3.'-4.5 (0.39 -0.45,3>' -39.')

~,,~ 'fl
'~~WI- 1

I
--
5'\

,
),

"~

" It, -~ ~,.../ "---./"-- ~~
n.- /

i ~
r~ ~ ~'".~

i
@
'0)"
I

I
Jl~J)
1~~
6.86 •

~ "" <>!.
0
(0.70,60.7)

",,~~@
SLC991AB

G)
Reservoir tank

@
Reservoir tankbracket

@
Radiator cap

@
Mounting bracket

@
Upper hose
@

Washer

(J)
Drain plug

@
Mounting rubber

@
Oilcooler hose(AfTmodels)
@l

Radiator

@
Lower hose

@
Cooling fan

@
Cooling fanmotor

Cooling fancontrol system

• Cooling fansarecontrolled bythe ECM. Fordetails, referto
EC section ("Cooling FanControl", "TROUBLE DIAG-
NOSES").

Refilling enginecoolant

• For details onrefilling enginecoolant, refertoMA section
("REFILLING ENGINECOOLANT", "ChangingEngine
Coolant").

LC-16

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

•

Before
installing frontcover assembly, removealltraces of
liquid gasket frommating surface usingascraper.
Also remove tracesofliquid gasket frommating surface of
cylinder block.
1. Apply acontinuous beadofliquid gasket tomating surface
of front cover assembly.
• Use Genuine LiquidGasket orequivalent.
2.' Installation isthe reverse orderofremoval.

•
•
SLC492A
SLC491A
ENGINE
LUBRICATION SYSTEM
Oil Pump (Conl'd)
INSTALLATION
Feeler gauge
SLC494A

@-@=~
I
SLC450A

SLC860A
LC-19

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

ENGINECOOLING SYSTEM

Water outlet
Cooling
Circuit

•:Thermostat open

o :
Thermostat closed

- ~.=-~:: --_-_-_-~ ~~
=1
Reservoir tank
I

SLC043B

System Check
WARNING: Never remove theradiator capwhen theengine ishot; serious
burns couldbecaused byhigh pressure fluidescaping fromthe
radiator.
Wrap athick cloth around thecap andcarefUlly removeitby
turning ita quarter turntoallow built-up pressure toescape
and then turnthecap allthe way off.
Cooling SystemInspection

CHECKING HOSES

Check waterhoses forproper attachment, leaks,cracks,
damage, looseconnections, chafinganddeterioration.

CHECKING RADIATORCAP

To check radiator cap,apply pressure tocap with atester.
Radiator caprelief pressure:
Standard

SLC613-A
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)

LC-21
•

A16-21
N.m ~/
(1.6 •2.1 kg-m,
12 -15
ft.lb)
ENGINE
COOLING SYSTEM

Cooling SystemInspection (Cont'd)

Pull thenegative 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 pressuremaycause radiator damage.

Water Pump
REMOVAL
1. Drain coolant fromradiator.
2. Remove cylinderblockdrain pluglocated atleft front of
cylinder blockanddrain coolant.
3. Remove frontRHwheel andengine sidecover.
4. Remove drivebelts.
5. Remove frontengine mounting.
6. Remove waterpump.
CAUTION:
• When removing waterpumpassembly, becareful nottoget
coolant ondrive belt.
• Water pumpcannot bedisassembled andshould be
replaced asaunit.
• After installing -waterpump, connect hoseandclamp
securely, thencheck forleaks using radiator captester.

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

SLC408C LC-22