head bolt MITSUBISHI ECLIPSE 1991 User Guide

ENGINE <1.8L Engine> - Cylinder Head and Valve9-57
Enamel-
coating
sideSpring
retainerStem seal
Spring- seat
3EN324intake side
3EN315Front of engine
I,Exhaust side
11./7. INSTALLATION OF VALVE SPRINGInstall the valve spring with its enamel coated end toward
the valve spring retainer.
9.15. INSTALLATION OF RETAINER LOCK(1) Using the special tool, compress the spring, and then
install the retainer lock.
Caution
When compressing the spring, check to see that the
valve stem seal is not pressed to the bottom of the
retainer.
(2) Make certain that retainer locks are positively installed.
1. INSTALLATION OF CYLINDER HEAD BOLTSUsing the special tool, tighten in the order shown in two or
three steps, gradually tighten. Finally tighten to the speci-
fied torque.

ENGINE <1.8L Engine> -Front Case, Oil Pump and Silent Shaft9-63
aSocket wrench/
3EN271
MD998285R
Fasten toqether with
the timtins under cover
C
belt tensioner3ENOOWTiming marks
16. / 15. INSTALLATION OF OIL PUMP GEARS(1) Align the timing mark on the drive gear with that on
driven gear and install them into front case.
(2) Apply amplely engine oil to the gears.
3EN046
21. INSTALLATlON OF SILENT SHAFT OIL SEAL
Using a socket wrench, press-in the silent shaft oil seal intofront case.
17. INSTALLATION OF FRONT CASE(1) Set the special tool on the front end of crankshaft and
apply engine oil to the outer circumference of the
special tool.
(2) Install the front case using three different sizes of bolts
as shown.
Code
A
B
C
Bolt size
(diameter x length) mm (in.)8
x 20 (.32 x .79)8
x 25 (.32 x .98)
8 x 40 (32 x 1.57)
Head mark
“4”
“4”“4”
14. INSTALLATION OF FLANGE BOLT
Insert a Phillips screwdriver [shank diameter 8 mm (32 in.)]into the plug hole on the left side of cylinder block to block
the silent shaft, then tighten the flange bolt.

ENGINE <2.0L DOHC Engine> -Camshafts and Camshaft Oil Seals9-85Plastic hammer
Intake side
Exhaust side
Jzzl
(22
Slits
11. REMOVAL OF EXHAUST CAMSHAFT SPROCKET/
12. INTAKE CAMSHAFT SPROCKET(1) Using a wrench at the hexagonal part of the camshaft
(to prevent the crankshaft from turning), loosen the
cramshaft sprocket bolt.
(2) Remove the camshaft sprokets.
13. REMOVAL OF CAMSHAFT OIL SEALSRemove the oil seals using a screwdriver or similar tool.
Caution
Take care not to damage front camshaft bearing cap
and camshaft.
14./15./16./17. REMOVAL OF CAMSHAFT BEARfNG CAPS(1) Loosen the bearing cap installation bolts in two or
three steps.
(2) Remove the bearing cap.
NOTEIf the bearing cap is difficult to remove, use a plastic
hammer to gently tap the rear
.part of the camshaft,
and then remove.
SERVICE POINTS OF INSTALLATIONNO92DAB
lg. INSTALLATION OF INTAKE CAMSHAFT/18. EXHAUST
CAMSHAFT(1) Install the camshafts on the cylinder head.
Caution
Be sure not to mistake the intake side and the
exhaust side. There are slits for crank angle sensor
drive in the rear end of the intake camshaft.
NOTEInstall new camshafts using the following procedure.
(1) Remove the rocker arms.
(2) Lay the camshafts on the cylinder head and install
the bearing caps.
(3) Check that the camshaft can be easily turned by
hand.(4) After checking, remove the bearing caps and the
camshafts, and install the rocker arms.

9-86ENGINE <2.0L DOHC Engine> -Camshafts and Camshaft Oil Seals
rMD998306qil seal
coatithe
mrenceof the guide.
6EN612Matingmark atMating mark at
llA0361Semi-circular packing
Awlv sealant(2) The camshaft’s dowel pins should be at the positions
shown in the figure.
17./16./15./14. INSTALLATION OF CAMSHAFT BEARING
CAPSTighten the bearing cap installation bolts to the specified
torque in two or three steps.
Caution
Tighten uniformly, otherwise the rocker arms will not
be straight.
13. INSTALLATION OF CAMSHAFT OIL SEALSUsing the special tool, press in the oil seal as shown in the
figure.
_-‘7
10. INSTALLATION OF THE CRANKSHAFT ANGLE SENSOR(1) Align the mating mark (punch mark) on the housing of
the crank angle sensor with the mating mark (notch) in
the plate.
(2) Install the crank angle sensor to the engine.
Caution
When tightening the nut of the crankshaft angle
sensor, make sure that the crank angle sensor does
not turn.(3) Check that the ignition timing is set at the standard
value. (Refer to GROUP
8-Ignition System.)
8. INSTALLATION OF SEMI-CIRCULAR PACKINGInstall the semi-circular packing to the cylinder head, and
apply a coating of the specified sealant where shown in
the figure.
Ak
Specified sealant: MOPAR Part No.4318034
or equivalent

ENGINE <2.0L DOHC Engine> - Oil Pan and Oil Screen9-89
Sealant
Grooveole of bolt
0180052
INSPECTION&SHOW
lCheck the oil pan for damage and cracks. Replace if faulty.l Check the oil screen for clogging; damage and cracks.
Replace if faulty.
SERVICE POINTS OF INSTALLATION
NOSHDASa
11. INSTALLATION OF OIL PAN
(1) Use a wire brush or other tool to scrape clean all gasketsurfaces of the cylinder block and oil pan so that all
loose material is removed.
(2) Gasket surfaces must be free of oil and dirt.
(3) Apply the specified sealant around the gasket surface
of the oil pan as specified in illustration.
Specified sealant: MITSUBISHI GENUINE PART
No.
MD9971 10 or equivalent
NOTEThe sealant should be applied in a continuous head
approximately 4 mm
(.I 6 in.) in diameter.
(4) Assemble oil pan to cylinder block within 15 minutes
after applying the sealant.
CautionAfter installing the oil pan, wait at least 30 minutes
before starting the engine.

9-90ENGINE <2.0L DOHC Engine> - Cylinder Head Gasket
CYLINDER HEAD GASKETNOSJA-S2.5-3.5 Nm 19
3 4 K
REIVIOVAL AND INSTALLATION2-3 ft.lbs.\ I i-6
Pre-removal Operation*Eliminating Fuel Pressure in Fuel20Line1\(Refer to GROUP 14-Service Ad-justment Procedures.)eDraining of Engine Coolant(Refer to GROUP 7-Service Adjust-
ment Procedures.)
,,vs4-6 Nm
’
II28
2936’
/w,=
3i38OlAO5.69
Removal stepsl
1. Connection for accelerator cable orthrottle cable
2. Connection for accelerator cable (Auto-
cruise control)3. Connection for oxygen sensor
temperature sensor
5. Connection for engine coolant
temperature gauge unit6. Connection for engine coolant
7. Connection for crank angle sensor
8. Connection for TPS
ISC and idle switch
10. Connection for fuel injector
12. Connection for power transistor
13. Connection for knock sensor (Turbo)
14. Connection for EGR temperature sensor
(California vehicles only)
15. Connection for ground cable
+e l + 17. Connection for radiator upper hose
/\05ADl9019. Center cover
20. Connection for spark plug cable assembly
21. Connection for air intake hose (Turbo)
22. Connection for breather hose (Turbo)
23.Airintakehose24. Connection for breather hose+e l 25. Connection for fuel high pressure hose26. O-ring
27. Connection for vacuum hoses
28. Connection for heater hose
29. Connection for water by-pass hose
30. Connection for PCV hose
31. Connection for vacuum hose (Turbo)
32. Connection for water hose (Turbo)
33. Eye-bolt (Turbo)
34. Gasket (Turbo)
35. Connection for oil pipe (Turbo)
36. Connection for vacuum hoses (Turbo)
37. Connection for fuel return hose
38. Connection for brake booster vacuum
hoseA
NOTE(1) Reverse the removal procedures to reinstall.(2) +I) : Refer to “Service Points of Removal”.
(3) ~~ : Refer to “Service Points of Installation”.
(4) m : Non-reusable parts

9-92ENGINE <2.0L DOHC Engine> - Cylinder Head Gasket
04A0090
r00
0
697
105
\Front of engine
*Intake side
Exhaust sideSERVICE POINTS OF REMOVAL
NOSJSAP
17. REMOVAL OF RADIATOR UPPER HOSEF-isMake mating marks on the radiator hose and hose clamp,
and then disconnect the radiator hose.
25. DISCONNECTION OF HIGH PRESSURE FUEL HOSE
Caution
Cover the hose connection with rags to prevent splash
of fuel that could be caused by some residual ljressure
in the fuel pipe line.For information concerning the bleeding of the residual
pressure, refer to GROUP 14-Service Adjustment Proce-
dures.
39. REMOVAL OF TIMING BELTRefer to
P.9-98.
47. REMOVAL OF CYLINDER HEAD ASSEMBLYUsing the special tool, loosen the bolts in the order shown
in the figure (in 2 or 3 cycles) and remove. Then remove thecylinder head assembly.A

ENGINE <2.0L DOHC Engine> - Cylinder Head Gasket9-93
DlADD3fFront of
engine+Exhaust side
OlR0391Cylinder
he/d-Ani-circularpackingSERVICE POINTS OF INSTALLATIONNOSJDDls
48. INSTALLATION OF CYLINDER HEAD GASKET
(1)Use a scraper to clean the gasket surface of the cylinder
block.
Caution
Take care that no foreign material gets into the
cylinder, or into coolant passages or oil passages.(2) Make sure that the gasket has the proper identification
mark for the engine.
(3) Lay the cylinder head gasket on the cylinder block with
the identification mark at the front top.
47. INSTALLATION OF CYLINDER HEAD ASSEMBLY
(1)Use a scraper to clean the gasket surface of the cylinderhead assembly.
Caution
Take care that no foreign material gets into the
coolant passages or oil passages.(2) Using the special tool and a torque wrench, tighten the
bolts to the specified torque in the order shown in the
figure. (in two or three cycles)
Caution
Install the head bolt washers as shown in the
diagram.
41. APPLICATION OF SEALANT TO SEMI-CIRCULAR PACK-
ING
Apply a coating of the specified sealant to the semi-circularpacking and the cylinder head to top surfaces.
Specified sealant: MOPAR Part No.4318034 or equiva-
lent

--ENGINE
<2.0L DOHC Engine> - Timing Belt9-97
ExhaustIntake cam-
CrankshaftsproketsprockekOlhw51
1r
SERVICE POINTS OF REMOVAL-a3. REMOVAL OF ENGINE MOUNT BRACKET
(1) With a wooden block placed against the oil pan part of
the engine, jack up the vehicle.
CautionJack up gently, so as not to apply a load to the
various parts.
(2) Remove the engine mount bracket,
5. REMOVAL OF DRIVE BELT (ALTERNATOR)
Before removing the drive belt, loosen the water pump
pulley mounting bolts.
21. REMOVAL OF AUTO TENSIONER
(1) Turn the crankshaft clockwise and align the timing
marks so as to bring the No. 1 cylinder to compression
top-dead-centre position.
At this time the timing marks of the camshaft sprocket
and the upper surface of the cylinder head should
coincide, and the dowel pin of the camshaft sprocket
should be at the upper side.
CautionThe crankshaft must always be rotated clockwise.
(2‘) Remove the auto tensioner.

ENGINE <2.0L DOHC Engine> - Timing Belt9405
I
P(5) Thread the timing belt over the intake side camshaft
sprocket and fix it an indicated position by a clip.
(6) Thread the timing belt over the exhaust side sprocket,
aligning the timing marks with the cylinder head top
surface using two wrenches.
(7) Fix the belt at indicated position by a clip.
(8) Thread the timing belt over the idler pulley, the oil pumpsprocket, the crankshaft sprocket and the tension
pulley in the order shown.
(9) Remove the two clips.
(1O)Lift up the tensioner pulley in the direction of arrow andtighten the center bolt.
(11)Check to see that all timing marks are lined up.
(12)Remove the screwdriver inserted in step (4) and fit the
plug.
(13)Give the crankshaft a quarter counterclockwise turn.
Then, turn it clockwise until the timing marks are lined
up again.