Mitsubishi Grandis. Manual — part 638
CYLINDER HEAD GASKET
ENGINE MECHANICAL
11A-29
REMOVAL SERVICE POINTS
<<A>> CAMSHAFT SPROCKET
REMOVAL
CAUTION
Never turn the crankshaft anti-clockwise.
1. Turn the crankshaft clockwise, align the timing
marks on the camshaft sprocket to set No.1
cylinder to TDC of its compression stroke.
2. Remove the timing belt under cover rubber plug
and then set special tool adjusting bolt
(MD998738).
3. Screw in the special tool until it comes in contact
with the timing belt tensioner arm.
4. Secure the camshaft sprocket and valve timing
belt with wiring bands and so on to prevent
slippage between the camshaft sprocket and
valve timing belt.
5. Use the following special tools to hold the
camshaft sprocket.
• Front hub and flange yoke holder (MB990767)
• Pin (MD998719)
CAUTION
Do not rotate the crankshaft after camshaft
sprocket removal.
6. Remove the camshaft sprocket with the valve
timing belt and place it on the timing belt lower
cover.
<<B>> RADIATOR UPPER HOSE/HOSE
CLIP DISCONNECTION
Break off the tip of hose clip claw and spread out the
hose clip, then disconnect the radiator upper hose.
NOTE: If there is a hose clip claw, the hose clip
cannot spread to capacity.
AC301450AB
Timing mark
AC301452AB
MD998738
Timing belt
under cover
AC301373
AB
MD998738
Timing belt
tensioner arm
AC107621
AC301451AC
Wiring band
AC100302
MD998719
MB990767
AB
AC302615
Hose clip
Claw (Tip)
AE
CYLINDER HEAD GASKET
ENGINE MECHANICAL
11A-30
<<C>> FUEL HIGH-PRESSURE HOSE
REMOVAL
1. Remove the fuel high-pressure hose stopper.
2. Remove the fuel high-pressure hose in the
direction shown in the figure while the retainer is
pulled up.
NOTE: If the retainer is released, install it after
removing the fuel high-pressure hose.
<<D>> CYLINDER HEAD BOLTS
REMOVAL
Use special tool cylinder head bolt wrench
(MB991654) to loosen the cylinder head bolts in two
or three steps in the order of the numbers shown in
the illustration. If the cylinder head bolts cannot be
pulled out due to the washer being trapped in the
valve spring, raise the bolt slightly, then remove it
while holding it by using a magnet.
INSTALLATION SERVICE POINTS
>>A<< CYLINDER HEAD GASKET
INSTALLATION
CAUTION
Do not allow any foreign materials get into the
coolant passages, oil passages and cylinder.
1. Degrease the cylinder head gasket mounting
surface.
AC301860AB
Stopper
AC301861AB
Retainer
AC301454AB
MB991654
10
5
2
8
3
9
7
4
6
1
Engine front
AC302180AB
Identification
mark "381"
Exhaust side
CYLINDER HEAD GASKET
ENGINE MECHANICAL
11A-31
2. Assemble to the cylinder block so the cylinder
head gasket identification mark of "381" is at the
top surface and on the exhaust side.
>>B<< CYLINDER HEAD BOLTS
INSTALLATION
1. Check that the nominal length of each cylinder
head bolt meets the limit. If it exceeds the limit,
replace the bolts with a new one.
Limit (A): 99.4 mm
2. Apply a small amount of engine oil to the thread of
the bolts and to the washers.
3. Use special tool cylinder head bolt wrench
(MB991654) to tighten the cylinder head bolts in
the following procedures.
(1) Tighten the bolts to 78
± 2 N⋅m in the order
shown.
(2) Loosen the bolts fully in the reverse sequence
to that shown.
(3) Tighten the bolts to 20
± 2 N⋅m in the order
shown.
(4) Apply a paint mark to the heads of the cylinder
head bolts and cylinder head, then tighten 90
degree angle as shown.
CAUTION
• The bolt is not tightening sufficiently if the
tightening angle is less than a 90 degree
angle.
• If the tightening angle exceeds the standard
specification, remove the bolt and start over
from step 1.
(5) Tighten in a 90 degree angle as shown in the
instructions of the figure, then check to see
that the paint mark on the head of the cylinder
head bolts and the paint mark on the cylinder
head is on a linear line.
AC102537
A
AC
(Engine oil)
AC301456AB
MB991654
10
9
7
5
2
4
8
6
1
3
Engine front
AC102331AB
Paint marking
90˚
90˚
Step (4)
Step (5)
Paint marking
CYLINDER HEAD GASKET
ENGINE MECHANICAL
11A-32
>>C<< FUEL HIGH-PRESSURE HOSE
INSTALLATION
CAUTION
After connecting the fuel high-pressure hose,
slightly pull it to ensure that it is installed
securely. Also confirm that there is a play
approximately 3 mm. Then install the stopper
securely.
Apply a small amount of engine oil to the fuel line
pipe and then install the fuel high-pressure hose.
>>D<< RADIATOR UPPER HOSE/HOSE
CLIP CONNECTION
CAUTION
Never reuse the hose clip whose claw is broken
off to prevent the rusting.
1. insert a new hose clip into the radiator upper
hose.
2. Insert the radiator upper hose until the protrusion
of water outlet fitting.
3. Remove the hose clip claw and shorten the hose
clip, then secure the radiator upper hose.
>>E<< CAMSHAFT SPROCKET
INSTALLATION
1. Use the following special tool as during removal to
hold the camshaft sprocket.
• Front hub and flange yoke holder (MB990767)
• Pin (MD998719)
2. Tighten the camshaft sprocket mounting bolt to
the specified torque.
Tightening torque: 89
± 9 N⋅m
>>F<< Brake booster vacuum hose
INSTALLATION
1. Insert the brake booster vacuum hose thoroughly
until it contacts the inlet manifold so that its mating
mark faces towards the direction shown.
2. Secure the brake booster vacuum hose with hose
clip.
AC301864AB
3 mm
Fuel
high-pressure
hose
Fuel line pipe
(Engine oil applied)
AC301863AB
Stopper
AC100302
MD998719
MB990767
AB
AC311486
Mating mark
AB
AC311486
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