Mitsubishi Evolution X. Manual — part 183

CYLINDER HEAD GASKET

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ENGINE MECHANICAL

11A-63

INSTALLATION SERVICE POINTS

.

>>A<< CYLINDER HEAD GASKET/CYLINDER
HEAD ASSEMBLY INSTALLATION

CAUTION

Do not allow any foreign materials get into the coolant pas-
sages, oil passages and cylinder.
1. Remove the sealant and grease on the top surface of

cylinder block and on the bottom surface of the cylinder
head. Then, use the quick-drying degreasing agent (white
gasoline) to degrease the sealant application surface.

2. Apply the sealant to the top surface of cylinder block as

shown in the figure.

Specified sealant: Three bond 1217G

3. Within three minutes after the sealant application, install the

cylinder head gasket to the cylinder block.
NOTE: When the cylinder gasket is installed to the cylinder
block, check that the sealant is securely applied to the bead
line of the cylinder head gasket.

4. Apply the sealant to the top surface of cylinder head gasket

as shown in the figure.

Specified sealant: Three bond 1217G

CAUTION

Within two hours after the cylinder head assembly installa-
tion, do not apply oil or water to the sealant application
area or start the engine.
5. Within three minutes after the sealant application, install the

cylinder head assembly.

.

AC607682AB

Degrease

Degrease

Bottom view of cylinder head

Top view of cylinder block

AC511063

AD

φ 2 mm or φ 3 mm (φ 0.08 in or φ 0.12 in)

Cylinder head
gasket

Cylinder head
gasket

Cylinder
block

φ 2 mm or φ 3 mm
(

φ 0.08 in or φ 0.12 in)

CYLINDER HEAD GASKET

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ENGINE MECHANICAL

11A-64

>>B<< CYLINDER HEAD BOLT AND WASHER
ASSEMBLY/CYLINDER HEAD BOLT
WASHER/CYLINDER HEAD BOLT INSTALLATION

1. Replace the cylinder head bolt and washer with new ones.
2. For two bolts of the timing chain side, the washer can be

removed from the bolt. Install the washer, with its sag facing
upward, to the bolts.

3. Apply a small amount of engine oil to the thread of the bolts

and to the washers.

4. Tighten the bolts by the following procedure (plastic region

angular tightening method).

(1) Tighten the bolts to 35

± 2 N⋅ m (26 ± 1 ft-lb) in the order

of number shown in the figure.

CAUTION

• When the tightening angle is smaller than the specified

tightening angle, the appropriate tightening capacity
cannot be secured.

• When the tightening angle is larger than the specified

tightening angle, remove the bolt to start from the
beginning again according to the procedure.

(2) Apply paint marks to the head of cylinder head bolt and

the cylinder head.

(3) Tighten the cylinder head to 90

° in the tightening order.

Additionally tighten to 90

° , and check that the paint mark

on the cylinder head bolt is aligned with the paint mark on
the cylinder head.

AC506767AE

1

2

3

4

5

6

7

8

9

10

Engine front

AC708680AC

90˚

90˚

Paint mark

Paint mark

Paint marks

Paint marks

CYLINDER HEAD GASKET

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ENGINE MECHANICAL

11A-65

5. Install special tool MB991928 or MB991895 which was

installed for supporting the engine and transaxle assembly
when the valve timing chain was removed (Refer to

P.11A-69

).

6. Remove the garage jack which supports the engine and

transaxle assembly.

7. Remove the engine oil pan installed temporarily.

.

AC705461

MB991454

AC

MB991928

AC705462

MB991454

AC

MB991895

CYLINDER HEAD GASKET

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ENGINE MECHANICAL

11A-66

>>C<< CAMSHAFT BEARING/CAMSHAFT AND
CAMSHAFT SPROCKET ASSEMBLY
INSTALLATION

CAUTION

• Be careful not to drop the camshaft bearing.
• When installing the camshaft and camshaft sprocket

assembly (exhaust side), be careful not to let the cam-
shaft bearing which is installed to the front cam bearing
deviate from its position.

When replacing the camshaft bearing, according to the identifi-
cation mark of front camshaft bearing cap in the table below,
select a camshaft bearing with the corresponding size. Note
that the identification mark of camshaft bearing is stamped on
the place shown in the figure.

.

Front camshaft bearing cap

Camshaft bearing
identification mark

Identification
mark

Journal diameter
mm (in)

1

40.000 - 40.008
(1.5748 - 1.5751)

1

2

40.008 - 40.016
(1.5751 - 1.5754)

2

3

40.016 - 40.024
(1.5754 - 1.5757)

3

AC611697

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Front camshaft
bearing cap

Identification
mark

AC708893

Notch

Identification mark

Oil hole

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