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Mitsubishi Lancer Evolution X. Manual - part 80

TIMING CHAIN

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ENGINE MECHANICAL

11A-73

>>B<< TIMING CHAIN TENSIONER
INSTALLATION

1. Check that the sprocket timing chain mating marks align

with the link plates (blue) of the timing chain, and install the
timing chain tensioner to the cylinder block.

2. Remove the hard wire or L-shaped hexagon wrench fixing

the plunger of the timing chain tensioner to apply tension to
the timing chain.

>>C<< CRANKSHAFT FRONT OIL SEAL
INSTALLATION

1. Apply a small amount of engine oil to the entire inner

diameter of the oil seal lip.

CAUTION

When installing the crankshaft oil seal, be careful to avoid
damage to the crankshaft front oil seal.
2. Using special tool MB991448, press in the crankshaft front

oil seal up to the chamfered surface of timing chain case.

AC506772

Link plates (blue)

Link plate (blue)

Mating
mark

Mating mark

AC506773

Timing chain
tensioner

Hard wire or
L-shaped
hexagon
wrench

AC506763 AC

MB991448

Timing chain case

TIMING CHAIN

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ENGINE MECHANICAL

11A-74

>>D<< TIMING CHAIN CASE ASSEMBLY
INSTALLATION

CAUTION

• Be sure to remove the sealant remaining in the mount-

ing hole, O-ring groove, and gap between parts.

• After degreasing with degreasing agent, check that

there is no oil on the surface where the sealant is
applied.

• After degreasing with degreasing agent, never touch

the degreased area with fingers.

1. Remove sealant from the timing chain case assembly and

the timing chain case assembly mounting surface of the
cylinder block and the cylinder head, and degrease the
surface where the sealant is applied.

2. Remove all the sealant adhering to the gasket between the

cylinder head and cylinder block (three-surface aligned
part.) Then, degrease the surfaces.

3. As for the three-surface aligned part that is indicated in Step

2 above, the engine oil oozes from the cylinder head gasket.
Thus, quickly apply the sealant to it after degreasing.

4. To the timing chain case assembly mating surface, apply the

sealant with a width of 2.5 ± 0.5 mm (0.1 ± 0.02 inch) and

without a gap. However, with the "A" shown in the figure,
apply the sealant with overlapping the diameter of 4.5 ± 0.5

mm (0.18 ± 0.02 inch) or 2.5 ± 0.5 mm (0.1 ± 0.02 inch) as

shown in the figure.

Specified sealant: Three bond 1217G or equivalent

CAUTION

• If the sealant contacts any other part during installation

of the timing chain case assembly, apply sealant again
before installing the timing chain case assembly.

• After the installation, until a sufficient period of time

(one hour or more) elapses, do not apply the oil or
water to the sealant application area or start the engine.

5. Install the timing chain case assembly to the cylinder block

and cylinder head so that the sealant does not contact other
parts.
NOTE: Install the timing chain case assembly immediately
after applying sealant.

AC708935

φ 4.5 ± 0.5 mm
(

φ 0.18 ± 0.02 in)

4.5 ± 0.5 mm
(0.18 ± 0.02 in)

3 ± 0.5 mm
(0.12 ± 0.02 in)

2.5 mm
(0.1 in)

φ 2.5 ± 0.5 mm
(

φ 0.1 ± 0.02 in)

φ 2.5 ± 0.5 mm
(

φ 0.1 ± 0.02 in)

φ 2.5 ± 0.5 mm
(

φ 0.1 ± 0.02 in)

3 ± 0.5 mm
(0.12 ± 0.02 in)

φ 2.5 ± 0.5 mm
(

φ 0.1 ± 0.02 in)

7.5 ± 0.5 mm
(0.30 ± 0.02 in)

1 ± 0.5 mm
(0.04 ± 0.02 in)

Section A – A

Section B – B

Section C – C

TIMING CHAIN

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ENGINE MECHANICAL

11A-75

6. To the installation positions shown in the figure, tighten the

timing chain case assembly mounting bolts to the specified
torque shown below.

>>E<< WATER PUMP PULLEY INSTALLATION

Temporarily tighten the water pump pulley mounting bolts.
Then, tighten them to the specified torque after the installation
of drive belt.

Tightening torque: 9.0 ± 1.0 N⋅ m (80 ± 9 in-lb)

Bolt (symbol)

Thread
diameter x
Length mm

Tightening torque

Flange bolt (A) M6 × 25

10 ± 2 N⋅ m (89 ±

17 in-lb)

Flange bolt (B) M8 × 28

24 ± 4 N⋅ m (18 ± 2

ft-lb)

Bolt (C)

M6 × 25

10 ± 2 N⋅ m (89 ±

17 in-lb)

AC708525AC

ENGINE ASSEMBLY

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ENGINE MECHANICAL

11A-76

ENGINE ASSEMBLY

REMOVAL AND INSTALLATION

M1112001005792

CAUTION

• When the engine assembly is replaced, initialize the learned value using scan tool. (Refer to

GROUP 00, Precautions before Service − and Initialization Procedure of MFI Engine Learned Value

P.00-35

)

• Before replacing the steering wheel assembly and driver's air bag module assembly, always refer

to GROUP 52B − Service Precautions

P.52B-24

, and Air Bag Module(s) and Clock Spring

P.52B-413

. Also, position the front wheels in a straight ahead direction, and remove the ignition

key. If you fail to do this, clock spring for SRS may get damage, making the SRS (air bag) inopera-
tive, and it may cause a serious injury to the driver.

• After adjusting the wheel alignment, always perform calibration to make the ASC-ECU learn the

neutral position of the steering wheel sensor. (Refer to GROUP 35C, On-vehicles Service − Steering

Wheel Sensor Calibration

P.35C-289

)

Pre-removal operation
• Fuel Line Pressure Reduction (Refer to GROUP 13A,

On-vehicle Service − How to Reduce Pressurized Fuel

Lines

P.13A-868

• Engine Room Under Cover Front A, B, Engine Room

Under Cover Center and Engine Room Side Cover

Removal (Refer to GROUP 51, Under Cover