engine NISSAN ALMERA N15 1995 Service Manual

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

ENGINEREMOVAL

SEM234F

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

I
0

~

@> ~
44•54 (4.5 •5.5, 33•40)

V

[OJ

44-54
(4.5 •5.5,
33 •40)
~,
r1jl~

)
~~~
~~.
'/,
~",

~ 44-54 ~V/~ /\~"-
~v)~.
~l"J
22.29

(4.5 •5.") -
Y) .
(2.2•3.0, 16•22)

33.40) /' ,

Z:::.~
\l"J
44."

~ ~(4.5•5,5, 33•40)

~ l"J
44." (4.5.5.5,33' 40) .~.

I~
22•29 (2.2 •3.0, 16.22)
>

[OJ
64. 74 ,~
(6.5 -7.5,
!
rf:{l"A

47 •54) .../ ,

~ /1.;'0-

/~ /[(1\ ~
~:5- _5~.5, 33-40) \

[OJ
74-91 "'~' .•~~ ~\

(8.0 -9.~~,,,
0
I
I'. ,

58 -67) /' \
[OJ
44_54 ~

[OJ
'64-74
~A1k
~Ol
(4.5-5.5, 33•40)
(6.5 -7.5, 47. 54) ~~ r~

[OJ
44-54
~I~,~

(4.5 -5.5, 33-40)
t?
I
!

"SR"
marked direction
~,"7 ~~
44•54 (4.5 •5.5,33.40)

Front

MIT models
[OJ
44•54

t
(4.5-5.5,

33 -40)

1~

ol~
Ill.~,

;~
;&6

[OJ
44-54 ~--W

(4.5 -5.5,
I

33 -40)
0

c~ ___
~
"

o

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"Releasing FuelPressure" 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'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
"ASSembIY"'-~
: 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

SEM141FA

jPiSIOn healer

SEM877S CYLINDER
BLOCK
CAUTION:

• When installing slidingparts(bearings, pistons,etc.),apply
new engine oiltothe sliding surfaces.
• Place removed partssuchasbearings andbearing capsin
their proper orderanddirection.
• Apply newengine oiltobolt thread andseat surfaces when
tightening thefollowing: Connecting rodbolts andmain
bearing capbolts.
• Donot allow anymagnetic materials tocontact thering gear
teeth offlywheel/drive plate.
Disassembly

PISTON ANDCRANKSHAFT

1. Place engine onawork stand.
2. Remove cylinder head.
Refer to"Removal" in"TIMING CHAIN"(EM-69).
3. Remove oilpan.
Refer to"Removal" in"OIL PAN" (EM-63).
4. Remove timingchain.
Refer to"Removal" in"TIMING CHAIN"(EM-69).
5. Remove pistonswithconnecting rods.
• When disassembling pistonandconnecting rod,remove
snap ringfirst. Then heatpiston to60 to70°C (140to158°F),
or use piston pinpress stand atroom temperature.
6. Remove rearoilseal retainer.
7. Remove bearingbeam,bearing capand crankshaft.
• Before removing bearingcap,measure crankshaft endplay.
• Bolts should beloosened intwo orthree steps.

Loosen innumerical order.

SEM007D
AEM023
Inspection

PISTON ANDPISTON PINCLEARANCE

1. Measure innerdiameter ofpiston pinhole "dp".
Standard diameter"dp":

21.987 -21.999
mm
(0.8656 -0.8661
in)

EM-102

SEM123CCYLINDER
BLOCK ~

Inspection (Cont'd)

CYLINDER BLOCKDISTORTION ANDWEAR

1. Clean upperfaceofcylinder blockandmeasure thedistor-
tion. Standard: Less than0.03mm(0.0012 in)
Limit: 0.10 mm(0.0039 in)
2.
If
out ofspecification, resurfaceit.
The resurfacing limitisdetermined bycylinder headresur-
facing inengine.

SEM008D
Amount
ofcylinder headresurfacing is"A".
Amount ofcylinder blockresurfacing is
"8".

The maximum limitisas follows:
A
+
8
=
0.2 mm (0.008 in)
Nominal cylinderblockheight
from crankshaft center:
211.25 -211.35 mm(8.3169 -8.3208 in)
3. Ifnecessary, replacecylinder block.

y

ii-El)'

N 0+ -X

--

00


Unit: mm(in)

SEM363E PISTON-
TO-BORE CLEARANCE

1. Using abore gauge, measure cylinderboreforwear, out-
of-round andtaper.
Standard innerdiameter:
86.000 -86.030 mm(3.3858 -3.3870 in)
Wear limit: 0.20mm(0.0079 in)

If
itexceeds thelimit, rebore allcylinders. Replacecylinder
block ifnecessary.
Out-of-round (X-Y) standard:
Less than0.015 mm(0.0006 in)
Taper (A-
8
and A-C) standard:
Less than0.010 mm(0.0004 in)
2. Check forscratches andseizure. Ifseizure isfound. hone

it.

• When replacing bothcylinder blockandpiston withnew
ones, select piston making sureofgrade numbers. Piston
grade number shouldbethe same asthe grade number
punched oncylinper blockupper surface.
3. Measure pistonskirtdiameter.
Piston diameter "A":Refer toSDS (EM-168).
Measuring point"a"(Distance fromthebottom):
14.0 mm(0.551 in)
4. Check thatpiston-to-bore clearanceiswithin specification.
Piston-to-bore clearance"B":
0.010 -0.030 mm(0.0004 -0.0012 in)
5. Determine pistonoversize according toamount ofcylinder
wear.
Oversize pistonsareavailable forservice. RefertoSDS (EM-
168).

EM-104

#5

#4 ~

~i1
hole #3~~ \)

#2 ~~,
#1~~~ ~~

12 ~~
Engine front~

SEM685D
SEM964
SEM313D CYLINDER
BLOCK
Inspection (Cont'd)
BEARING CLEARANCE

• Use either ofthe following twomethods, however, method
"A" gives morereliable resultsandispreferred.

Method A(Using boregauge
&
micrometer)
Main bearing

1. Set main bearings intheir proper positions oncylinder
block andmain bearing cap.
2. Install mainbearing capand main bearing beamtocylinder
block.

Tighten allbolts incorrect orderintwo orthree stages.

3. Measure innerdiameter "A"ofeach main bearing.
4. Measure outerdiameter "Om"ofeach crankshaft main
journal.
5. Calculate mainbearing clearance.
Main bearing clearance
=
A-Om

Standard: 0.004•0.022 mm(0.0002 •0.0009 in)
Limit: 0.050mm(0.0020 in)

6. Ifitexceeds thelimit, replace bearing.
7. Ifclearance cannotbeadjusted withinthestandard ofany
bearing, grindcrankshaft journalanduseundersized bear-
ing.
a. When grinding crankshaft journal,confirmthat"L"dimen-
sion infillet rollismore thanthespecified limit.

"L":
0.1mm (0.004 in)

b. Refer toSOS forgrinding crankshaft andavailable service
parts.
8. Ifcrankshaft isreused, measure mainbearing clearances
and select thickness ofmain bearings.
If crankshaft isreplaced withanew one, select thickness of
main bearings asfollows:
a. Grade number ofeach cylinder blockmainjournal is
punched onthe respective cylinderblock.These numbers
are punched ineither Arabic orRoman numerals.

EM-106

Frontmark
Oil hole
Engine
front Piston
grade
number
Cylindernumber
SEM946C

Top
Oil

SEM199F CYLINDER
BLOCK []:[J
Assembly (Conl'd)

2. Heat piston to60 to70°C (140to158°F) andassemble piston,
piston pin,connecting rodand new snap ring.

• Align thedirection ofpiston andconnecting rod.
• Numbers stampedonconnecting rodand capcorrespond to
each cylinder.
• After assembly, makesureconnecting rodswings
smoothly.

3. Set piston ringsasshown.

CAUTION:
• When piston ringsarenotreplaced, makesurethatpiston
rings aremounted intheir original positions.
• When replacing pistonrings,thosewithout punchmarks can
be mounted witheither sideup.
Oil ring
expander
*v

Engine!/
front

(:J

#5
#4 ~

~il hole #3~~ \)

#2 ~~ ,
#1~~~ ~~

12 ~~

Engine front~
SEM685DCRANKSHAFT

1. Set main bearings intheir proper positions oncylinder
block andmain bearing cap.

• Confirm thatcorrect mainbearings areused. Referto
"Inspection" ofthis section.
• Apply newengine oiltobearing surfaces.
EM-110

Tighteninnumerical order.
'::::::-.... Alignoilhole.
~~
'~~-
SEM015D
SEM159B CYLINDER
BLOCK [][]
Assembly (Cont'd)

2. Install crankshaft andmain bearing capsandtighten bolts
to the specified torque.

• Apply newengine oiltothread ofbearing capbolts.
• Prior totightening bearingcapbolts, shiftcrankshaft back
and forth toproperly seatthebearing cap.
• Tightening procedure
a. Tighten allbolts to26 to32 N'm (2.7to3.3 kg-m, 20to24 •
in-Ib).
b. Turn allbolts 75to80 degrees clockwise withTool orsuit-
able angle wrench.
c. Loosen allbolts completely.
d. Tighten allbolts to32 to38 N'm (3.3to3.9 kg-m, 24to28
ft-Ib).
e. Turn allbolts 45to50 degrees clockwise withTool orsuit-
able angle wrench.
• Ifan angle wrench isnot available, markallbearing cap
bolts onthe side facing engine rear.Then, turneach bolt
specified degreesclockwise. Confirmangleofdegrees with
a graduator, notbyeye-measurement.
• After securing bearingcapbolts, makesurecrankshaft
turns smoothly byhand.

3. Measure crankshaft endplay.

Crankshaft endplay:
Standard
0.10 -0.26 mm(0.0039 -0.0102 in)

Limit
0.30 mm(0.0118 in)

If beyond thelimit, replace thrustbearings withnewones.
4. Install connecting rodbearings inconnecting rodsandcon-
necting rodcaps.

• Confirm thatcorrect bearings areused. Referto
"I nspection" .
• Install bearings sothat oilhole inconnecting rodaligns with
oil hole ofbearing.
• Apply newengine oiltobolt threads andbearing surfaces.

5. Install pistons withconnecting rods.
a. Install themintocorresponding cylinderswithTool.

• Becareful nottoscratch cylinder wallbyconnecting rod.
• Arrange sothat front mark onpiston headfaces toward
front ofengine.
• Apply newengine oiltopiston ringsandsliding surface of
piston.

EM-111