Mitsubishi Lancer Evolution IX. Manual - part 93

PISTON AND CONNECTING ROD

ENGINE OVERHAUL

11B-63

CRANKSHAFT PIN OIL CLEARANCE 
(PLASTIGAGE METHOD)

1. Wipe off oil from the crankshaft pin and 

connecting rod bearing.

2. Cut a piece of plastigage whose length is 

equivalent to the width of the bearing and place it 
on the crankshaft pin in parallel with its axis.

3. Install the connecting rod cap carefully and tighten 

the nuts to the specified torque 20 

± 2 N⋅m + 90° 

to 94

°.

4. Remove the nuts, then remove the connecting rod 

cap carefully.

5. Measure the largest width of the crushed 

plastigage using the ruler printed on the bag of the 
plastigage.

Standard value: 0.02 

− 0.04 mm

Limit: 0.1 mm

AK202848

CRANKSHAFT AND CYLINDER BLOCK

ENGINE OVERHAUL

11B-64

CRANKSHAFT AND CYLINDER BLOCK

REMOVAL AND INSTALLATION

M1113008700693

AK203816 AC

32 ± 2 N·m

6

3

14

15

11

13

8

12

5

9

4

10

1

7

2

25 ± 2 N·m   +90˚ 

11 ± 1 N·m

9.0 ± 1.0 N·m

132 ± 5 N·m

11 ± 1 N·m

Apply engine oil to
all moving parts
before installation.

Removal steps 

1. Flywheel bolt
2. Flywheel
3. Rear plate
4. Bell housing cover

>>

E

<< 5. Oil seal case

>>

D

<< 6. Oil seal

>>

C

<< 7. Bearing cap bolt

>>

C

<< 8. Beam bearing cap

>>

B

<< 9. Crankshaft bearing, lower

10. Crankshaft

>>

B

<< 11. Crankshaft bearing, upper

>>

A

<< 12. Thrust bearing

13. Check valve
14. Oil jet
15. Cylinder block

Removal steps (Continued)

CRANKSHAFT AND CYLINDER BLOCK

ENGINE OVERHAUL

11B-65

INSTALLATION SERVICE POINTS
>>A<< THRUST BEARING INSTALLATION

Install the two thrust bearings in the No. 3 bearing 
bore in the cylinder block. Each thrust bearing must 
be installed with the grooved end toward the crank-
shaft web.
NOTE: Applying engine oil to the bearings will help 
facilitate holding them in position.

>>B<< CRANKSHAFT BEARING 
INSTALLATION

1. Location of crankshaft journal diameter marks

<Bearing selection example>
If the crankshaft journal diameter mark is “0” and 
the cylinder block bearing bore mark is “1,” then 
select a bearing with a “2” mark as the No. 1, 2, 4 
or 5 bearing and a bearing with a “1” mark as the 
No. 3 bearing.
If the crankshaft journal diameter mark is illegible, 
measure the journal diameter and select a 
bearing with the mark corresponding to the 
measurement.

2. The diameter identification marks of the bearing 

bores in the cylinder block are stamped in the 
location shown in the drawing.

AK202769

Groove

AB

AK202908

Location of crankshaft journal 
diameter marks

No. 3

No. 1

No. 2

No. 5

No. 4

AB

AK304518AB

No. 1 No. 2

No. 3

No. 4

No. 5

Cylinder 
bore size 
mark

Timing belt side

Diameter identification marks of 
bearing bores in cylinder block

Crankshaft journal diameter

Cylinder block bearing 
bore

Crankshaft bearing

Identification mark

Journal diameter 
measurement mm

Identification mark

Identification mark

0

56.994 

− 57.000

0

0

1

1

2

2

1

56.988 

− 56.994

0

1

1

2

2

3

2

56.982 

− 56.988

0

2

1

3

2

4

CRANKSHAFT AND CYLINDER BLOCK

ENGINE OVERHAUL

11B-66

3. The size mark of each crankshaft bearing is 

indicated by ink in the location shown in the 
drawing.

4. Install bearing halves with oil grooves in the 

cylinder block bearing bores.

5. Install bearing halves with no oil grooves in the 

beam bearing cap.

>>C<< BEAM BEARING CAP/BEARING 
CAP BOLT INSTALLATION

1. Install the beam bearing cap on the cylinder block 

with the arrow pointing to the timing belt.

2. Measure the shank length of each bearing cap 

bolt before installation. If the measurement 
exceeds the limit, replace the bolt.

Limit: 71.1 mm

3. Apply engine oil to the threads and bearing 

surface of the bolt.

4. Tighten the bolts to 25 

± 2 N⋅m in the indicated 

sequence.

5. Make a paint mark on the head of the bolt.
6. Make a paint mark on the bearing cap at a point 

90 to 100

° away from the paint mark made on the 

bolt head in the tightening direction.

CAUTION

• If the tightening angle is less than 90°, ade-

quate tightness could not be assured.

• If the tightening angle exceeds 100°, loosen 

the bolt completely and then perform the 

tightening again beginning with the first step.

7. Turn clockwise the bolts 90

° to 100° in the 

indicated tightening sequence to bring the mark 
on each bolt head into alignment with that on the 
bearing cap.

8. After installing the beam bearing cap, measure 

the end play of the crankshaft. If the end play 
exceeds the limit, replace the crankshaft bearings.

Standard value: 0.05 

− 0.25 mm

Limit: 0.4 mm

AK304464AC

Identification mark

Crankshaft bearing identification mark location

AK301466

Groove

For lower

For upper

AD

AK301471AD

Shank length

AK202737

8

4

1

5

9

7

3

2

6

10

Arrow

AB

AK202722

Paint mark

Paint mark

AB

90˚ to 100˚

AK202823