Mitsubishi Lancer Evolution IX. Manual - part 332

CAMSHAFT AND VALVE STEM SEAL

ENGINE MECHANICAL

11A-17

CAMSHAFT AND VALVE STEM SEAL

REMOVAL AND INSTALLATION

M1112006601076

CAUTION

• If the vehicle is equipped with the Brembo™ disc brake, during maintenance, take care not to con-

tact the parts or tools to the caliper because the paint of caliper will be scratched.

•

Pre-removal Operation
• Under Cover Removal (Refer to GROUP 51, Front 

Bumper 

P.51-2

).

• Side Cover Removal

• Engine Coolant Draining (Refer to GROUP 14, On-vehicle 

Service 

− Engine Coolant Replacement 

P.14-15

).

• Air Duct Removal (Refer to GROUP 15, Air Cleaner 

P.15-5

).

• Air Pipe C Removal (Refer to GROUP 15, Intercooler 

P.15-6

).

• Accelerator Cable Removal (Refer to GROUP 17, Accel-

erator Cable and Pedal 

P.17-3

). <LH drive vehicles>

• Valve Timing Belt Removal (Refer to 

P.11A-36

).

Post-installation Operation
• Valve Timing Belt Installation (Refer to 

P.11A-36

).

• Accelerator Cable Installation (Refer to GROUP 17, 

Accelerator Cable and Pedal 

P.17-3

). <LH drive vehicles>

• Air Pipe C Installation (Refer to GROUP 15, Intercooler 

P.15-6

).

• Air Duct Installation (Refer to GROUP 15, Air Cleaner 

P.15-5

).

• Engine Coolant Refilling (Refer to GROUP 14, On-vehicle 

Service 

− Engine Coolant Replacement 

P.14-15

).

• Drive Belt Tension Check (Refer to 

P.11A-7

).

• Side Cover Installation

• Under Cover Installation (Refer to GROUP 51, Front 

Bumper 

P.51-2

).

• Accelerator Cable Adjustment (Refer to GROUP 17, 

On-vehicle Service 

− Accelerator Cable Check and 

Adjustment 

P.17-2

). <LH drive vehicles>

*Remove and assemble the marked parts in each cylinder unit.

AC504945

11 ± 1 N·m

11 ± 1 N·m

3.0 ± 0.5 N·m

3.0 ± 0.5 N·m

11 ± 1 N·m

5.0 ± 1.0 N·m

8.8 ± 1.0 N·m

11 ± 1 N·m

1

2

3

5

6

8

17

18

12

10

13

11

16

9

4

14

7

15

N

N

N

AB

Removal steps 

1.

Oil feeder control valve connector

>>

O

<<

2.

Oil feeder control valve

>>

O

<<

3.

O-ring

4.

Rocker cover centre cover

•

Spark plug cables and ignition 
coils (Refer to GROUP 16, 
Ignition Coil 

P.16-34

).

5.

Oxygen sensor (Front) connector

6.

Crank angle sensor connector

7.

Control wiring harness 
connection

8.

Rocker cover PCV hose

9.

Rocker cover breather hose

<<

A

>>

>>

N

<<

10. Radiator upper hose connection
11. Camshaft position sensor 

connector (exhaust side)

12. Camshaft position sensor 

connector (inlet side)

13. Earth terminal
14. Control wiring harness 

connection

15. Vacuum hose and pipe assembly

>>

M

<<

16. Rocker cover
17. Spark plug hose gaskets
18. Rocker cover gasket

CAMSHAFT AND VALVE STEM SEAL

ENGINE MECHANICAL

11A-18

Removal steps (Continued)

AC406533

22 ± 4 N·m

19

89 ± 9 N·m

20

21

25

20 ± 1 N·m

23

26

24

22

28

29

27

30

33

35

36

34

31

32

37

38

39

40

41

42

43

44

N

10 ± 2 N·m

10 ± 2 N·m

22 ± 4 N·m

N

14 ± 1 N·m

14 ± 1 N·m

N

AC

N

32 ± 2 N·m

65 ± 5 N·m

45

46

Apply engine oil
to all moving
parts before
installation.

Removal steps 

19. Camshaft position sensor support 

cover

20. Camshaft position sensor support 

cover gasket

>>

L

<<

21. Camshaft position sensing cylinder 

(exhaust side)

>>

J

<<

22. Camshaft position sensor  support
23. Camshaft position sensor support 

cover

24. Camshaft position sensor support 

cover gasket

>>

K

<<

25. Camshaft position sensing cylinder 

(inlet side)

>>

J

<<

26. Camshaft position sensor  support

<<

B

>>

>>

I

<<

27. Camshaft sprocket (exhaust side)

>>

G

<< 28. Camshaft oil seal

>>

F

<<

29. Camshaft  bearing cap, front

>>

F

<<

30. Camshaft  bearing cap, rear

>>

F

<<

31. Camshaft  bearing cap, No.2

>>

F

<<

32. Camshaft  bearing cap, No.5

>>

F

<<

33. Camshaft  bearing cap, No.3

>>

F

<<

34. Camshaft  bearing cap, No.4

>>

E

<<

35. Exhaust camshaft
36. Camshaft sprocket cap
37. Washer

<<

B

>>

>>

H

<<

38. Camshaft sprocket (inlet side)

>>

G

<< 39. Camshaft oil seal

>>

F

<<

40. Camshaft  bearing cap, front

>>

F

<<

41. Camshaft  bearing cap, rear

>>

F

<<

42. Camshaft  bearing cap, No.2

>>

F

<<

43. Camshaft  bearing cap, No.5

>>

F

<<

44. Camshaft  bearing cap, No.3

>>

F

<<

45. Camshaft  bearing cap, No.4

>>

E

<<

46. Inlet camshaft

CAMSHAFT AND VALVE STEM SEAL

ENGINE MECHANICAL

11A-19

Removal steps (Continued)

AC406534

47

N

48

49

50

51*

52*

53*

54*

55*

51*

52*

53*

N

AC

25 ± 4 N·m

11 ± 1 N·m

Removal steps 

47. Rocker arms

>>

D

<<

48. Rocker arm lash adjusters
49. Oil delivery body
50. Spark plugs

<<

C

>>

>>

C

<<

51. Valve spring retainer locks
52. Valve spring retainers

>>

B

<<

53. Valve springs

>>

A

<<

54. Inlet valve stem seals

>>

A

<<

55. Exhaust valve stem seals

CAMSHAFT AND VALVE STEM SEAL

ENGINE MECHANICAL

11A-20

REMOVAL SERVICE POINTS
<<A>> RADIATOR UPPER HOSE DISCON-
NECTION

AC200641AB

Mating marks

Make mating marks on the radiator hose and the 
hose clamp. Disconnect the radiator hose.

<<B>> CAMSHAFT SPROCKETS 
REMOVAL

AC407095AC

1. Hold the hexagon part of the camshaft with a 

wrench.

2. Loosen the camshaft sprocket mounting bolts and 

remove the camshaft sprocket.

Removal steps (Continued)