1995 NISSAN ALMERA N15 height

ENGINEREMOVAL
mJ

Removal (Cont'd)

• Disconnect controlrodand support rodfrom transaxle.
(M/T

models)
Control rod:

to:J:
14-18 N.m (1.4-1.8 kg-m, 10-13 ft-Ib)
Support rod:

to:J:
35-47 N.m (3.6-4.8 kg-m, 26-35 ft-Ib)

• Disconnect controlcablefromtransaxle.
(A/Tmodels)

• Center member
• Front exhaust tube
• Stabilizer
• Cooling fan
• Radiator
• Cylinder headfrontmounting bracket
• Remove airduct anddisconnect wires,harness, pipes,
hoses andsoon.
8. Lift upengine slightly anddisconnect orremove allengine
mountings.

When liftingengine, becareful nottohit itagainst adjacent
parts, especially againstbraketubesandbrake master cylin-
der.

9. Remove enginewithtransaxle asshown.

Installation
When installing theengine, adjusttheheight ofbuffer rodas
shown. (ForM/T)

• Installation isthe reverse orderofremoval.

EM-46

SEM003FCYLINDER
BLOCK
Inspection (Cont'd)
Feeler gauge Straightedge
SEM102F

I
I

,

,

!

,

A

X-V
B
Unit:
mm
(In)

SEM166DA CYLINDER
BLOCKDISTORTION ANDWEAR

1. Clean upperfaceofcylinder blockandmeasure thedistor-
tion.
Limit: 0.10 mm(0.0039 in)

2. Ifout ofspecification, resurface
it.

The resurfacing limitisdetermined bycylinder headresur-
facing inengine.

Amount ofcylinder headresurfacing is
"A".

Amount ofcylinder blockresurfacing is
"B".

The maximum limitisas follows:

A
+
B
= 0.2 mm (0.008 in)
Nominal cylinderblockheight
from crankshaft center:
213.95 -214.05 mm(8.4232 .8.4271 in)

3. Ifnecessary, replacecylinder block.

PISTON- TO-BORE CLEARANCE

1. Using abore gauge, measure cylinderboreforwear, out-
of-round andtaper.

Standard innerdiameter:
GA16DE 76.000-76.030 mm(2.9921 -2.9933 in)
GA14, 15DE73.600 -73.630 mm(2.8976 -2.8988 in)
Wear limit:
0.2 mm (0.008 in)

If itexceeds thelimit, rebore allcylinders. Replacecylinder
block ifnecessary.

Out-of-round (X-Y) standard:
0.015 mm(0.0006 in)
Taper (A-B) standard:
0.01 mm(0.0004 in)
EM-50

SEM925CCYLINDER
HEAD
Disassembly (Cont'd)

12. Remove valveoilseal with asuitable tool.

Inspection
CYLINDER HEADDISTORTION
. Head surface flatness:
Standard Less than0.03mm(0.0012 in)
Limit
0.1 mm (0.004 in)

If beyond thespecified limit,replace orresurface.

Resurfacing limit:
The resurfacing limitofcylinder headisdetermined bythe cyl-
inder block resurfacing inan engine.
Amount ofcylinder headresurfacing is
"A".

Amount ofcylinder blockresurfacing is
"B".

The maximum limitisas follows:

A
+
B
=
0.2 mm (0.008 in)

After resurfacing cylinderhead,check thatcamshaft rotates
freely byhand. Ifresistance isfelt, cylinder headmustbe
replaced.

Nominal cylinderheadheight:
136.9 -137.1 mm(5.390 -5.398 in)
CAMSHAFT VISUALCHECK

Check camshaft forscratches, seizureandwear.

CAMSHAFT RUNOUT

1. Measure camshaft runoutatthe center journal.

Runout (Totalindicator reading):
Standard Less than0.02mm(0.0008 in)
Limit
0.1 mm (0.004 in)

2. Ifitexceeds thelimit, replace camshaft.

EM-88

SEM929CCYLINDER
HEAD ~
Inspection (Cont'd)
CAMSHAFT CAMHEIGHT

1. Measure camshaft camheight.

Standard camheight:
Intake 38.408 -38.598 mm(1.5121 .1.5196 in)
Exhaust 37.920 •38.110 mm(1.4929. 1.5004in)
Cam wear limit:
Intake
&
Exhaust
0.2 mm (0.008 in)

2. Ifwear isbeyond thelimit, replace camshaft.

CAMSHAFT JOURNALCLEARANCE

1. Install camshaft bracketandtighten boltstothe specified
torque.
2. Measure innerdiameter ofcamshaft bearing.

Standard innerdiameter:
28.000 -28.021 mm(1.1024 -1.1032 in)

Measure outerdiameter ofcamshaft journal.

Standard outerdiameter:
27.935 .27.955 mm(1.0998 -1.1006 in)

If clearance exceedsthelimit, replace camshaft and/orcyl-
inder head.

Camshaft journalclearance:
Standard 0.045 -0.086 mm(0.0018 .0.0034 in)
Limit 0.15 mm(0.0059 in)
CAMSHAFT ENDPLAY

1. Install camshaft incylinder head.
2. Measure camshaft endplay.

Camshaft endplay:
Standard 0.055. 0.139mm(0.0022 -0.0055 in)
Limit 0.20 mm(0.0079 in)
CAMSHAFT SPROCKETRUNOUT

1. Install sprocket oncamshaft.
2. Measure camshaft sprocketrunout.

Runout (Totalindicator reading):
Limit 0.25mm(0.0098 in)

3. Ifitexceeds thelimit, replace camshaft sprocket.

EM-89
•

T(Margin thickness)

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nw
a

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d
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

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

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

Warpageofsurface:
Less than0.1mm (0.004 in)

SEM595A

_ Mic~rmeter

..;- @f

l ~

--I\"
Y

'~~':-- +x

'~o
rA1-
Center

[gJ
Bottom
Valve guide Valve

SEM244D CYLINDER
HEAD
Disassembly (Cont'd)

6. Remove valveoilseals usingspecial tool.

Inspection
CYLINDER HEADDISTORTION

1. Visually checkforcracks anddeformation.
2. Check cylinder headfordistortion.

Head surface flatness:
Less than0.1mm (O.004 in)

If beyond thespecified limit,replace orresurface cylinder
head.

Resurfacing limit:
The resurfacing limitofthe cylinder headisrelated tothe
amount ofresurfacing ofthe cylinder block.
When:
"A"
isthe amount ofresurfacing neededforthe cylinder head
and
"8"
isthe amount ofresurfacing neededforthe cylinder
block, themaximum limitisdetermined by
A + 8= 0.1 mm (O.004 in)

After resurfacing cylinderhead,check thatcamshaft rotates
freely byhand. Ifresistance isfelt, thecylinder headmustbe
replaced.

Nominal heightofcylinder head:
137.9. 138.1mm(5.429 .5.437 in)
VALVE GUIDECLEARANCE

1. Measure deflection acrossthecylinder headasillustrated.

Valve deflection limit(dial gauge reading):
0.1 mm (0.004 in)

2. Ifexceeding thelimit, check valve-to-guide clearance.
a) Measure valvestemdiameter andvalve guide innerdiam-
eter asillustrated.
b) Check thatclearance iswithin thespecification .

Valve stemtovalve guide clearance limit:
0.1 mm (O.004 in)

c) Ifexceeding thelimit, replace valveorvalve guide.

EM-130