engine MITSUBISHI SPYDER 1990 Service Repair Manual

ENGINECvlinder Head
REMOVAL AND INSTALLATION
Operationl
l
l
Post-installation Operationl (Refer to l (Refer to
21
Removalsteps
24. Breather hose connection
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ENGINE Cylinder Head Gasket
3.42.524 Nm18
307 8
Nm7-9
3425
00004208
32
S p e c i f i e d
PART
25.26.
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ENGINE Cylinder Head
sprocketCamshaft
sprocket
REMOVAL SERVICE POINTS
CAMSHAFT SPROCKET REMOVAL
(1) Rotate the crankshaft in the forward (right) ‘and,
align the timing marks. is the
stroke top dead position.)
Caution .
The crankshaft must always be in the
direction only.
(2) Tie the camshaft sprocket and timing belt with a cord
so that the position of the camshaft sprocket not
with respect to the timing belt.
(3). Use the special tool to remove the
sprocket
with the timing belt attached.
Caution
After removing the camshaft be sure not
to rotate the crankshaft.
RADIATOR UPPER HOSE/RADIATOR LOWER
HOSE DISCONNECTION
Place mating marks on the radiator hose and clamp,
and then disconnect the radiator hose.
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ENGINE Cylinder Head Gasket
Intake sideFront ofengine
Exhaust side
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CYLINDER HEAD BOLT
Using the special tool, the bolts in the order shown
in the illustration (in 2 or 3 stages), and then re move the
cylinder head assembly.
Caution
Because the plug guides cannot, be replaced by them -
selves, be careful not to damage or deform the
when removing the cylinder head bolts.
INSTALLATION SERVICE
CYLINDER HEAD GASKET INSTALLATION
(1) Wipe off all oil and grease from the gasket mounting
surface.
(2) the gasket to the cylinder block with the identification
mark facing upwards.
HEAD BOLT INSTALLATION
(1) When installing the cylinder head bolts, the le ngth below
the head of the bolts should be within the limit.
If it is outside the limit, replace the bolts.
Limit (A): 99.4 mm (3.91 in.)

ENGINECylinder Head Gasket
Painted marksPainted marks
Thermostat case assembly orwater pump
-ring
Water inlet pipe assembly
1
Caution
1. make a tightening angle just 90”. it is
than the head bolt will be loosened.
If it is more than remove the head bolt and repeat
the ‘procedure from step 1.
.
O-RING INSTALLATION
Caution
Do not let engine oil or other greases contact with the
O-ring.
THERMOSTAT CASE ASSEMBLY INSTALLATION

ENGINECvlinderHead ‘Gasket
Water outlet fitting orwater inlet fitting
II
(2) Apply specified sealant to the thermostat case assembly
in the places shown in the
Specified sealant:
MITSUBISHI GENUINE or
lent
(3) Apply a small amount of the O-ring of the water
inlet pipe, and then press the thermostat case asse mbly
into the water inlet pipe.
(4) Tighten the thermostat case assembly mounting, bolts.
(5) Tighten the water inlet pipe bolts.
RADIATOR LOWER UPPER
HOSE CONNECTION
(1) Insert each hose as the projection water
outlet fitting or water inlet fitting.
(2) Align the mating marks on the radiator hose and hose
clamp, and then connect the radiator hose.
FUEL
When connecting the high-pressure fuel hose to the fuel rail,
apply a small amount of clean engine oil to the hose union’
and then insert, being careful not to damage the O- ring.
Caution
Do not let engine oil get into the fuel rail.
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ENGINE Timing Belt
REMOVAL AND INSTALLATION
Pre-removal Operation Under Cover Removal(Refer to GROUP 42 Under Cover.)
l Engine Mount Bracket Removal
(Refer to GROUP 32
Engine Mounting.)
l Under Cover Installation
(Refer to GROUP 42 Under Cover.)
l Engine Adjustment
l Engine Mount Bracket (Refer to GROUP 32 Engine Mounting.)
8.8
25
7.2-8.7
Removal steps
l D r i v e
8. Timing belt front upper cover 9. T i m i n g b e l t f r o n t l o w e r l l i m i n g
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ENGINE
marks
(22-44
Auto tensioner
TIMING BELT, REMOVAL
(1) Turn the crankshaft in the forward direction (to the
to align the camshaft sprocket timing marks.
Caution
Always turn the crankshaft in the
o n l y .
(2) Loosen the tension pulley center bolt.
(3) Move the tension pulley to the water pump side, and
then remove the timing belt.
Caution
If the timing belt isto be reused, use chalk to mark
(on its flat side) an arrow indicating the clock-wi se
direction.
INSTALLATION SERVICE POINTS
AUTO TENSIONER INSTALLATION
(1) Apply 98-196 (22-44 Ibs.) force to the push rod of
the auto tensioner by against a metal (cylinder
and measure the movement of the push
rod.
Standard value: Within 1 mm in.)
A: Length when it is free (not pressed) B: Length when it is
A-B: Movement
(2)If it is out of the standard value, replace the aut o tensioner.
(3)Use a press or vise to gently compress the auto ten sioner
push rod until pin hole A of the push rod and pin hole
of the tensioner cylinder are aligned.
Caution
If the compression speed is too fast, the rod may
become damaged, so be sure to carry out this opera-
tion slowly.
(4) Once the holes are aligned, insert the set pin.
NOTE
When replacing the auto tensioner with part, the
pin will be in the auto tensioner.
(5) Install the auto tensioner to the
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E N G I N E Timing Belt
Timing marks
sprocket
mm
(2.36 in.)
or more .
BELT INSTALLATION
(1) Align the timing marks on the camshaft sprocket ; crank-
shaft sprocket and oil pump sprocket.
,
. . .
(2) After aligning the timing mark on the oil pump sprocket,’
remove the cylinder block plug and insert a Phillips screw-
driver with a diameter of 8 mm in.), and check
be sure that the screwdriver goes mm (2.36 in.)
or more. If the screwdriver will only go in 20
25 mm
in,) before striking the counterbalance shaft,
turn the sprocket once, realign the timing mark and check
that the screwdriver goes in 60 mm (2.36 in.) or mo re.
Do not take out the screwdriver until the timing ‘b elt is
installed.
(3) Install the timing belt so as not to be
the sprockets, by the following procedure.
Caution
If the timing belt is to install that
the mark indicates the clockwise direction.
(4) Set the tension pulley so that the pin
are at the
bottom, press the tension pulley lightly against th e timing
belt.
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(5) Screw the tool into the engine left support until
its end makes contact with the tensioner
At that
point, screw the tool in
and then remove
the set wire attached to the
tensioner.
(6) Remove the tool.
(7) Tighten the center bolt to the specified torque .
Specified torque: 48 (35

ENGINE Belt
48
Auto tensioner
A
BELT TENSION ADJUSTMENT
(1) After turning the crankshaft
of a revolution counter-
clockwise, turn it clockwise until the timing marks are
aligned.
(2) Loosen the tension pulley fixing bolt, and then use the
special tool and a torque wrench to
the fixing
bolt to the specified torque while applying tension to the
timing belt.,
Standard value:
3.5 Nm (2.6
belt tension torque> ,
Caution
When tightening the fixing bolt, do not let the ten sion
pulley turn with the bolt.
(3) Turn the crankshaft two revolutions ‘clockwise so that
the timing marks are aligned.
leaving it for 15 min-
utes, measure the amount of protrusion of the auto ten-
sioner.
Standard value (A): 3.8-4.5 mm in.)
(4) If the amount of protrusion is outside the standard value,,
repeat the operation in steps ‘(1) to, (3).
(5) Check again that the timing marks of each sproc ket are
aligned.
BELT FRONT LOWER COVER/TIMING
BELT FRONT UPPER COVER INSTALLATION
II the bolts, being
thread length mm (in.)
850
1.97)
1.10)
not to mistake the bolt size!
Flange bolt
(7.2-8.7)
Flange bolt
(7.2-8.7)
Washer
a s s e m b l e d b o l t
Flange bolt
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