NISSAN ALMERA N15 1995 Service Manual

T(Margin thickness)

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SEM892B
SEM188A CYLINDER
HEAD
Inspection (Cont'd)

3. Heat cylinder headto110 to130°C (230to266°F).
4. Press fitvalve seatuntil itseats onthe bottom.
5. Cut orgrind valve seatusing asuitable toolatthe specified
dimensions asshown inSDS (EM-165).
6. After cutting, lapvalve seatwithabrasive compound.
7. Check valveseating condition.

Seat faceangle
"u":

44°53' -45°07'
Contacting width
"W":

Intake 1.05 -1.35 mm(0.0413 -0.0531 in)
Exhaust
1.25 -1.55 mm(0.0492 -0.0610 in)
VALVE DIMENSIONS

Check dimensions ineach valve. Fordimensions, refertoSDS
(EM-164).
When valveheadhasbeen worn down to0.5 mm (0.020 in)in
margin thickness, replacevalve.

Grinding allowance forvalve stemtipis0.2 mm (0.008 in)or
less.
SEM288A VALVE
SPRING
Squareness
1. Measure "S"dimension.

Out-of-square:
Less than2.2mm (0.087 in)

2. Ifitexceeds thelimit, replace spring.

EM113 Pressure

Check valvespring pressure.

Pressure: N(kg, Ib)atheight mm(in)
Standard
578.02 -641.57 (58.94-65.42,
129.96 -144.25) at30.0 (1.181)
Limit
More than549.2 (56.0, 123.5) at30.0 (1.181)

If itexceeds thelimit, replace spring.

EM-92

•
SEM935C

Rocker arm

SEM694D CYLINDER
HEAD
Inspection (Cont'd)
HYDRAULIC LASHADJUSTER

1. Check contact andsliding surfaces forwear orscratches .
2. Check diameter oflash adjuster.

Outer diameter:
16.980 -16.993 mm(0.6685 -0.6690 in)

3. Check lashadjuster guideinnerdiameter.

Inner diameter:
17.000 -17.020 mm(0.6693 -0.6701 in)
Standard clearance betweenlashadjuster and
adjuster guide:
0.007 -0.040 mm(0.0003 -0.0016 in)
ROCKER ARM,SHIMANDROCKER ARMGUIDE

Check contact andsliding surfaces ofrocker arms,shims and
rocker armguides forwear orscratches.

Assembly
1. Install intakemanifold collector tointake manifold.
•

Intake manifold
collector Tighteninnumerical order.

SEM609E
EM-93

CYLINDERHEAD [][]
Assembly (Cont'd)

2. Install intakemanifold.
3. Install fueltube assembly.
Refer to"Injector RemovalandInstallation" inEC section.
Intake manifold
collector Tighteninnumerical order.

SEM610E
SEM786E
SEM594D

Thermostat
housing 4.
Install thermostat housingwithwater pipe.
• Tightening procedure:
1) Tighten bolt
@
to2-5 N'm (0.2-0.5 kg-m, 1.4-3.6 ft-Ib).
2) .Tighten bolt
@
to16-21 N'm (1.6-2.1 kg-m, 12-15 ft-Ib).
3) Tighten bolt
@
to16-21 N'm (1.6-2.1 kg-m, 12-15 ft-Ib).
4) Tighten bolt
CID
to16-21 N'm (1.6-2.1 kg-m, 12-15 ft-Ib).
5. Install exhaust manifold.
6. Install exhaust manifold cover.
7. Install wateroutlet.
a. Before installing wateroutlet, remove alltraces ofliquid
gasket frommating surface usingascraper.
• Also remove tracesofliquid gasket frommating surface of
cylinder head.
b. Apply acontinuous beadofliquid gasket tomating surface
of water outlet.

• Use Genuine LiquidGasket orequivalent.

~ Liquid gasket

SEM086D
8.Install intakemanifold supports.
9. Install crankcase ventilation oilseparator.

EM-94

CYLINDERHEAD
ill]

Assembly (Cont'd)

10. Install valvecomponent parts.

• Install valves withlarger diameter headonthe intake side.

•

Wide pitch
Narrow pitch
Paint mark
Cylinder headside
SEM085D•
Always usenew valve oilseal.
Refer toOIL SEAL REPLACEMENT.
• Before installing valveoilseal, install valvespring seat.
.' Install valvespring (uneven pitchtype) withitsnarrow
pitched sidetoward cylinder headside(paint mark).
• After installing valvecomponent parts,tapvalve stemtip
with plastic hammer toassure aproper fit.

11. Check hydraulic lashadjusters.
a. Push rocker armathydraulic lashadjuster location, andsee
if rocker armmoves. Ifitmoves atleast 1mm (0.04 in),it
indicates thatthere isair inthe high pressure chamber.
Noise willbeemitted fromhydraulic lashadjuster ifengine
is started without bleeding air.
b. Remove hydraulic lashadjuster anddipinacontainer filled
with engine oil.While pushing plungerasshown infigure,
lightly pushcheck ballusing athin rod. Airiscompletely
bled when plunger nolonger moves.

Air cannot bebled from thistype oflash adjuster byrunning the
engine.
SEM093D
• rEngine oil

- - , t-=1=i

Proper
rod
SEM772C
Rocker arm9UVide
Rock~rarm
Shim
Hydraulic
I

.,h
.dj"'"
i\\ j
12.
Install rocker arms,shims, rockerarmguides andhydrau-
lic lash adjusters.

CAUTION: Install allparts intheir original positions.
SEM202D EM-95

/1!!i1*Shim
~ Rocker armguide

Ij9 ~~
Valve collet

~ I:::
Valvespring

l!I
retainer

I!1!i! ~
'Valve spring
~ ~~ ~Valve springseat

j
Valveoilseal ~
Valve
SEM364DCYLINDER
HEAD ~

Assembly (Cont'd)

13. Select asuitable shimwhen replacing anyofthe following
parts withanew one: Cylinder head,shim, rocker armguide
and valve seat.Proceed asfollows toselect theshim of
correct thickness.
a. Install valvecomponent partstocylinder head(Except
shim).
• Always replace rockerarmguide withanew one.

Rod
KV10115700 Dial
gauge
SEM365DA
b.
Remove hydraulic lashadjuster.
c. Install Tool*intohydraulic lashadjuster fixinghole.
* Tool (KV10115700) isscrewed intomagnetic standrod
used withdialgauge.

SEM899D

\.
/~-

/

L
shim
Indicate
T
=
2.800 mm
(0.1102 In)
SEM096D
d.
Make surethatthefollowing partsareinstalled tothe cyl-
inder head: Valve, valvespring, collet,retainer androcker
arm guide (except shim).Measure difference (T
1)
between
sliding surface ofrocker armgUide andvalve stemendon
shim side.

When measuring, lightlypulldialindicator rodtoward youto
eliminate playinTool (KV10115700).

e. Select proper shim.

Shim thickness (T):
T
1
:l:0.025 mm(0.0010 in)

• Shims areavailable indifferent thicknesses from2.800 mm
(0.1102 in)to3.200 mm(0.1260 in)inincrements of0.025 mm
(0.0010 in).

EM-96

CYLINDERHEAD
Installation

• This installation isthe same procedure asthose fortiming
chain. Referto"Installation" in"TIMING CHAIN"(EM-73).

EM-97
•

ENGINEREMOVAL

SEM234F

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:
N'm (kg-m, ft-Ib)

I
0

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@> ~
44•54 (4.5 •5.5, 33•40)

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(4.5 •5.5,
33 •40)
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(4.5 -5.5, 33-40)
t?
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marked direction
~,&#34;7 ~~
44•54 (4.5 •5.5,33.40)

Front

MIT models
[OJ
44•54

t
(4.5-5.5,

33 -40)

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Ill.~,

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;&6

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44-54 ~--W

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G)
Rear engine slinger

@
Front engine mounting

@
Mounting bracket
@

Rear insulator

@
Center member

@
Buffer
(J)

Front engine slinger

@
Rear engine mounting

@
Dynamic damper

EM-98

SEM092DENGINE
REMOVAL
WARNING:
• Situate vehicle onaflat and solid surface.
• Place chocks atfront andback ofrear wheels.
• Donot remove engineuntilexhaust systemhascompletely
cooled off.
Otherwise, youmay burn yourself and/orfiremay break out
in fuel line.
• For safety during subsequent steps,thetension ofwires
should beslackened againsttheengine.
• Before disconnecting fuelhose, release fuelpressure from
fuel line.
Refer to&#34;Releasing FuelPressure&#34; inEC section.
• Besure tohoist engine andtransaxle inasafe manner.
• For engines notequipped withengine slingers, attach
proper slingers andbolts described inPARTS CATALOG.
CAUTION:
• When liftingengine, becareful nottostrike adjacent parts,
especially thefollowing: Accelerator wirecasing, brake
lines, andbrake master cylinder.
• Inhoisting theengine, alwaysuseengine slingers inasafe
manner.
Removal
1. Remove engineundercoverandhood.
2. Drain coolant frombothcylinder block,andradiator.
3. Drain engine oilfrom drain plugofoil pan.
4. Remove vacuumhoses,fuelhoses, wires,harness andcon-
nectors andsoon.
5. Remove exhausttubes,balljoints anddrive shafts.
6. Remove radiatorandfans.
7. Remove drivebelts.
8. Remove alternator, compressor andpower steering oil
pump fromengine.
9. Set asuitable transmission jackunder transaxle. Hoist
engine withengine slinger.
10. Remove centermember.
11. Remove enginemounting boltsfrombothsides andthen
slowly lowertransmission jack.

EM-99
•

SEM312DENGINE
REMOVAL
Removal (Cont&#39;d)

12. Remove enginewithtransaxle asshown.

Installation
1. Install engine mounting bracketandfixing bolts.

Be sure thatinsulators arecorrectly positioned onthe brack-
ets.
2. Carefully lowertheengine ontoengine mounting insulators.

When installing theengine, adjusttheheight ofthe engine
mounting asshown. (ForM/T)

3. Installation isinthe reverse orderofremoval.

EM-100

CYLINDERBLOCK
SEC.

Snapring~

f)
to:J
Refer to
&#34;ASSembIY&#34;&#39;-~
: Apply liquidgasket.
Lubricate withnew engine
011
•

CD
Rear oilseal retainer

@
Cylinder block

@
Water pump

@
Power steering oilpump
adjusting bar

@
Front cover withoilpump

@
Oilstrainer

(J)
Thrust bearing

@
Crankshaft

@
Connecting rodbushing

@J
Piston rings
@

Piston

@
Piston pin

@
Connecting rod

@
Connecting rodbearing

@
Baffle plate

@
Aluminum oilpan

@
Rear cover plate

@
Drain plug

@J
Steel oilpan

@
Baffle plate

EM-101 @

Side gallery baffleplate

@
Main bearing beam

@
Main bearing cap

@
Pilotconverter

@
Drive plate

@
Reinforcement plate

@
Flywheel

@
Pilotbushing

@
Rear plate

@
Main bearing