Mitsubishi Lancer Evolution VI. Manual - part 23

ENGINE  – 

Crankshaft and Flywheel

11-67

CRANKSHAFT AND FLYWHEEL

REMOVAL AND INSTALLATION

Apply engine oil to all
moving parts before
installation.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

25 Nm + 90

_

11 Nm

132 Nm

9 Nm

11 Nm

32 Nm

11 Nm

Removal steps

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

"

E

A

5. Oil seal case

"

D

A

6. Oil seal

"

C

A

7. Beam bearing cap bolt

"

C

A

8. Beam bearing cap

"

B

A

9. Crankshaft bearing lower

10. Crankshaft

"

B

A

11. Crankshaft bearing upper

"

A

A

12. Crankshaft thrust bearing
13. Check valve
14. Oil jet
15. Cylinder block

ENGINE  – 

Crankshaft and Flywheel

11-68

INSTALLATION SERVICE POINTS

"

A

A

CRANKSHAFT THRUST BEARING INSTALLATION

(1) Install the two thrust bearing in the number 3 bearing

bore in the cylinder block. For easier installation, apply
engine oil to the bearings; this will help hold them in
position.

(2) The thrust bearings must be installed with their groove

side toward the crankshaft web.

"

B

A

CRANKSHAFT BEARING INSTALLATION

(1) From the following table, select a bearing whose size

is appropriate for the crankshaft journal outside diameter.

Groove

Identification color of crankshaft journal

Bearing bore size
identification mark

Bearing bore
identification
mark

Cylinder inner
diameter size
mark

Rear face of
cylinder block

Bottom of 
cylinder block

No. 1

No. 2

No. 3

No. 4

No. 5

ENGINE  – 

Crankshaft and Flywheel

11-69

Crankshaft journal outside diameter

Cylinder block bearing bore

Crankshaft bearing

Identification color

Size mm

Identification mark

Identification mark or color

Yellow

56.994 – 57.000

0

0 or Black

1

1 or Green

2

2 or Yellow

None

56.988 – 56.994

0

1 or Green

1

2 or Yellow

2

3 or None

White

56.982 – 56.988

0

2 or Yellow

1

3 or None

2

4 or Blue

For example, if the crankshaft journal outside diameter
ID color is “yellow” and cylinder block bearing bore ID
mark is “1”, select a bearing whose ID mark is “1”.
If there is no ID color paint on the crankshaft, measure
the journal outside diameter and select a bearing
appropriate for the measured value.

(2) Install the bearings having an oil groove to the cylinder

block.

(3) Install the bearings having no oil groove to the bearing

cap.

"

C

A

BEARING CAP / BEARING CAP BOLT
INSTALLATION

(1) Install the bearing caps so the arrow points to the timing

belt side.

(2) Before installing the bearing cap bolts, check that the

shank length of each bolt meets the limit. If the limit is
exceeded, replace the bolt.

Limit: Max. 71.1 mm

(3) Apply engine oil to the threaded portion and bearing

surface of the bolt.

Crankshaft bearing size 
identification mark or color

Identification
mark or color

Upper

Groove

Lower

9EN0477

Shank length

ENGINE  – 

Crankshaft and Flywheel

11-70

(4) Tighten the bolts to 25 Nm in the specified tightening

sequence.

(5) Make a paint mark on the head of each bolt.
(6) Make a paint mark on the bearing cap at the position

90

°

 from the paint mark made on the bolt in the direction

of tightening the bolt.

(7) According to the specified tightening sequence, give a

90

°

 turn to each bolt and make sure that the paint mark

on the bolt and that on the cap are in alignment.

Caution
If the bolt is turned less than 90

°

, proper fastening

performance may not be expected. When tightening
the bolt, therefore, be careful to give a sufficient turn
to it.

(8) After installing the bearing caps, make sure that the

crankshaft turns smoothly and the end play is correct.
If the end play exceeds the limit, replace No. 3 crankshaft
bearings.

Standard value: 0.05 – 0.25 mm

Limit: 0.4 mm

"

D

A

OIL SEAL INSTALLATION

Using the special tool, knock the oil seal into the oil seal
case.

Arrow mark

6AE0299

Paint mark

Paint mark

90

°