engine NISSAN ALMERA N15 1995 Service Manual

•:Mating mark(different color) 16
rollers

SEM129F TIMING
CHAIN
@K]

Installation
(Cont'd)

19. Assemble camshaftsprocketwithchain.

• Set timing chainbyaligning matingmarkswiththose of
camshaft sprockets.
• Make suresprocket's matingmarksfaceengine front.

20. Install camshaft sprocketbolts.

• Apply newengine oiltobolt threads andseat surface .

•

SEM657D

2.0.3.0
mm
(0.079 -0.118 In)
21.
Install upperchaintensioner.

• Before installing chaintensioner, insertasuitable pininto
pin hole ofchain tensioner.
• After installing chaintensioner, removethepin.

22. Install lowerchaintensioner.

CAUTION:
• Check noproblems occurwhenengine isrotated.
• Make surethatNo.1piston isset atTOC onitscompres-
sion stroke.
• Make sureofthe direction ofthe gasket beforeinstalling
lower chaintensioner.

23. Apply liquidgasket tothermostat housing.
• Use Genuine LiquidGasket orequivalent.
24. Install thermostat housing.
25. Install waterpump pulley.

EM-27

WithoutVTC

Engine front
Unit: mm(in)
~(0.39)
~1-J--10 (0.39)

* -\

3 (0.12)
Z~
Liquid

gasket

SEM59BEA TIMING
CHAIN
Installation (Cont'd)

29. Apply liquidgasket torocker covergasket.

•

With VTC

Cylinderhead
'l:tJ

~ /2.0-3.0mm

Cylinder headfront cover
(0.079-0.118 In)
With
VTC

28. Apply liquidgasket tomating surfaces ofthe cylinder head
and cylinder headfrontcovers showninthe figure.

With VTC

Engine front

Unit: mm(in)
SEM091F

7~'\

\ ..... -4'

~-'?

~'0391

~10 (0.39)

*
--1

3 (0.12)
Zr.a
liquid

gasket

SEM111F
29.
Apply liquidgasket torocker covergasket.

Without VTC
With VTC
30.
Install rocker coverandtighten innumerical orderasshown
in the figure.
31. Install allspark plugsandleads.
32. Install engine frontmounting bracketandmounting.
33. Install frontexhaust tube.
34. Install frontundercover.
35. Install frontright.splash cover.
36. Install frontrightwheel.
37. Install aircleaner.
38. Install power steering pulleyandpump withbracket.
To check power steering fluid,refertoMA section ("Check-
ing Power Steering FluidandLines", "CHASSIS ANDBODY
MAINTENANCE").
39. Drive belts.
For adjusting drivebeltdeflection, refertoMA section
("Checking DriveBelts", "ENGINE MAINTENANCE").

EM-29

OILSEAL REPLACEMENT

KV10l07902
VALVE
OilSEAL

1. Remove rockercover.
2. Remove camshaft.
3. Remove valvespring. Referto"CYLINDER HEAD".
4. Remove valveoilseal withasuitable tool.

Piston concerned shouldbeset atTOC toprevent valvefrom
falling.

5. Apply engine oiltonew valve oilseal andinstall itwith Tool.

SEM136D
10.5
mm

(0.413 In)
SEM137D
FRONTOilSEAL

1. Remove thefollowing parts:
• Engine undercover
• Right-side splashcover
• Alternator andpower steering drivebelts
• Crankshaft pulley
2. Remove frontoilseal from front cover.

Be careful nottodamage oilseal portion.

• Install newoilseal inthe direction shown.

Engine /',

inside
Y
~
Engine

Youtside
Oil seal lip Dust
seal
lip
SEM715A EM-30

OILSEAL REPLACEMENT

3. Apply engine oiltonew oilseal andinstall itusing asuit-
able tool.

REAR OILSEAL

1. Remove flywheel ordrive plate.
2. Remove rearoilseal retainer.
3. Remove tracesofliquid gasket usingscraper.
4. Remove sealfrom rearoilseal retainer.

Be careful nottoscratch rearoilseal retainer.
/' SEM096F

•Install newoilseal inthe direction shown.

Engine
/'-l_ _~
Engine
inside
Y LV
outside
Oil seal lip Dustseallip

SEM715A
5.Apply engine oiltonew oilseal andinstall itusing asuit-
able tool.

SEM097F
EM-31
•

WITHVTC
SEC. 111.130

G)
Oilfiller cap

@
Rocker cover

@
Rocker covergasket

@
Oilseal

@
Camshaft bracket

@
Intake camshaft

(J)
Exhaust camshaft

@
Distributor bracket
CYLINDER
HEAD

@
Cylinder headbolt

@
Shim

@
Valve lifter

@
Valve cotter

@
Valve spring retainer

@
Valve spring

@
Valve spring seat

EM-32
7

~:N.m (kg-m, in-Ib)

A :
N.m (kg-m, ft-Ib)

~ :Apply
liquidgasket.

f] :
Lubricate withnew
engine oil.

SEM099FB

@
Valve oilseal

@
Valve guide

@
Cylinder head

@)
Cylinder headgasket

@)
Valve seat

@
Valve

@
Cylinder headfrontcover

WITHOUT VTC

SEC. 111-130

G)
Oilfiller cap

@
Rocker cover

@
Rocker covergasket

@
Oilseal

@
Camshaft bracket

@
Intake camshaft

(J)
Exhaust camshaft

@
Distributor bracket
CYLINDER
HEAD
@
Cylinder headbolt

@)
Shim

@
Valve lifter

@
Valve cotter

@
Valve spring retainer

@
Valve spring

@
Valve spring seat

EM-33
Ij]
.
N.m (kg-m, in-Ib)
~ :N.m (kg-m, ft-Ib)

~ :Apply
liquidgasket.

f) :
Lubricate withnewengine oil.

SEM244F
@
Valve oilseal

@
Valve guide

@
Cylinder head

@
Cylinder headgasket

@
Valve seat

@
Valve

@
Cylinder headfrontcover
•

CYLINDERHEAD
CAUTION:
• When installing camshaft, oilseals orother sliding parts,
lubricate contacting surfaceswithnewengine oil.
• When tightening cylinderheadbolts, camshaft sprocket
bolts andcamshaft bracketbolts,lubricate threadportions
and seat surfaces ofbolts withnewengine oil.
• Attach tagstovalve lifters soas not tomix them up.
Removal

• This removal isthe same procedure asthose fortiming
chain. Referto"Removal" in"TIMING CHAIN"(EM-20).

Disassembly
1. Remove valvecomponents withTool.
2 .. Remove valveoilseal withasuitable tool.

Inspection
CYLINDER HEADDISTORTION

Clean surface ofcylinder head.
Use areliable straightedge andafeeler gauge tocheck the
flatness ofcylinder headsurface.
Check alongsixpositions showninfigure.

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

If beyond thespecified limit,replace itor resurface it.

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

Amount ofcylinder blockresurfacing is
"8".

The maximum limitisas follows:
A +8
=
0.2 mm (0.008 in)

After resurfacing cylinderhead,check thatcamshaft rotates
freely byhand. Ifresistance isfelt, cylinder headmust be
replaced.
Nominal cylinderheadheight:
117.8 -118.0 mm(4.638 .4.646 in)
CAMSHAFT VISUALCHECK

Check camshaft forscratches, seizureandwear.

EM-34

SEM154D
SEM549A CYLINDER
HEAD
Inspection (Cont'd)
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.

CAMSHAFT CAMHEIGHT

1. Measure camshaft camheight.
Unit:mm(in)

GA16DE GA16DE
GA16DE
Engine model GA14DEGA15DE
withoutwith
VTC withVTC
for Aus- except
for
VTC traliaAustralia
39.880 -39.380 -
Intake 40.070
39570 40.610
-40.800
39.380 -(1.5701
-(1.5504 -(1.5988 -1.6063)
Standard 39.5701.5776)
1.5579)
cam height (1.5504-
40.056 -39.880 -39.910 -40.056
-
1.5579) 40.24640.07040.01040.246
Exhaust (1.5770-(1.5701
-(1.5713 -(1.5770
-
1.5845) 1.5776}1.5752)
1.5845}
Cam wear limit 0.20
(O.0079)

2. Ifwear isbeyond thelimit, replace camshaft.
•

CAMSHAFT JOURNALCLEARANCE

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

Standard innerdiameter:
No. 1bearing
28.000.28.021 mm(1.1024.1.1032 in)
No. 2to No. 5bearings
24.000 •24.021 mm(0.9449 .0.9457 in)

3. Measure outerdiameter ofcamshaft journal.

Standard outerdiameter:
No.1 journal
27.935.27.955 mm(1.0998 .1.1006 in)
No.2 toNo.5 journals
23.935 -23.955 mm(0.9423 •0.9431 in)

4. Ifclearance 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)
EM-3S

I

Recess
1
diameter

I

SEM795A CYLINDER
HEAD
Inspection (Cont'd)
VALVE SEATS

Check valveseats forpitting atcontact surface. Resurface or
replace ifexcessively worn.

• Before repairing valveseats, checkvalveandvalve guide
for wear. Ifthey have worn, replace them.Thencorrect
valve seat.
• Cut with both hands touniform thecutting surface.
REPLACING VALVESEATFORSERVICE PARTS

1. Bore outold seat until
it
collapses. Setmachine depthstop
so that boring cannot contact bottomfaceofseat recess in
cylinder head.
2. Ream cylinder headrecess.

Reaming boreforservice valveseat
Oversize [0.5mm(0.020 in)]:
Unit:mm(in)
Engine model GA16DE
withoutVTC,
GA16DE withVTC
14DE and15DE
30.500 -30.516
Intake (1.2008
-1.2014)
31.500-31.516
31.500 -31.516
(1.2402-1.2408)
(1.2402 -1.2408).
Exhaust 25.500
-25.516
26.500-26.516
(1.0039 -1.0046)
(1.0433-1.0439)
.: GA 16DE without VTC
Use thevalve guide center forreaming toensure valveseatwill
have thecorrect fit.
EM-38

VALVECLEARANCE
1 1 22
2 2 44
SEM140D Checking
Check valveclearance whileengine iswarm andnotrunning.

1. Remove rockercover.
2. Remove allspark plugs.
3. Set
NO.1
cylinder atTOC onitscompression stroke.
• Align pointer withTOC mark oncrankshaft pulley.
• Check thatvalve lifters on
NO.1
cylinder areloose andvalve
lifters on
NO.4
aretight.
If not, turn crankshaft onerevolution (360°)andalign as
above.
4. Check onlythose valves showninthe figure.
• Using afeeler gauge, measure clearance betweenvalve
lifter andcamshaft.
• Record anyvalve clearance measurements whichareoutof
specification. Theywillbeused latertodetermine the
required replacement adjustingshim.

Valve clearance forchecking (Hot):
Intake 0.21 -0.49 mm(0.008 .0.019 in)
Exhaust 0.30. 0.58mm(0.012 -0.023 in)

5. Turn crankshaft onerevolution (360°)andalign markon
crankshaft pulleywithpointer.
6. Check thosevalves shown inthe figure.
• Use thesame procedure asmentioned instep 4.
7. Ifall valve clearances arewithin specification, installthe
following parts.
• Rocker cover
• Allspark plugs
•

"-

Tool (A}KV10115110

,

SEM141DAdjusting
Adjust valveclearance whileengine iscold.

1. Turn crankshaft, toposition camlobeoncamshaft ofvalve
that must beadjusted upward.
2. Place Tool(A)around camshaft asshown infigure.

Before placing Tool(A),rotate notchtoward centerofcylinder
head (Seefigure.), tosimplify shimremoval later.
CAUTION: Be careful nottodamage camsurface withTool (A).
EM-41