Mitsubishi Lancer Evolution IX. Manual - part 345

EXHAUST MANIFOLD AND TURBOCHARGER

INTAKE AND EXHAUST

15-11

REMOVAL SERVICE POINTS
<<A>> OXYGEN SENSOR (FRONT) 
REMOVAL

ACX02426 AB

MD998770

Use special tool oxygen sensor wrench (MD998770) 
to remove the oxygen sensor (front).

<<B>> TURBOCHARGER OIL FEED PIPE 
REMOVAL

CAUTION

Take care not to allow foreign objects to get into 
the oil passage hole of the turbocharger assem-
bly after the turbocharger oil feed pipe is 
removed.

INSTALLATION SERVICE POINTS
>>A<< TURBOCHARGER ASSEMBLY 
INSTALLATION

AC210649AB

1. Clean the oil pipe and water pipe fitting, the inside 

of eye bolts, and individual pipe for clogs.

CAUTION

Take care not to allow foreign objects to get into 
the turbocharger assembly.
2. Clean or use compressed air to remove any 

carbon particles stuck to the oil passage of the 
turbocharger assembly.

3. Refill new engine oil at the oil feed pipe fitting hole 

of the turbocharger assembly.

•

Starter motor (Refer to GROUP 16, 
Starting System 

− Starter Motor 

Assembly 

P.16-20

).

9. Turbocharger oil return pipe

>>

C

<< 10. Turbocharger oil return pipe gasket

11. Turbocharger oil return pipe gasket
12. Vacuum hose connection
13. Air outlet fitting

>>

B

<< 14. Air outlet fitting gasket

15. Vacuum hose connection
16. Exhaust fitting bracket

Removal steps (Continued)

17. Turbocharger and exhaust fitting 

assembly

18. Turbocharger gasket

>>

A

<< 19. Turbocharger assembly

20. Exhaust fitting gasket
21. Exhaust fitting assembly
22. Turbocharger water return pipe and 

hose assembly

23. Gaskets
24. Exhaust manifold
25. Exhaust manifold gasket

Removal steps (Continued)

EXHAUST MANIFOLD AND TURBOCHARGER

INTAKE AND EXHAUST

15-12

>>B<< AIR OUTLET FITTING GASKET 
INSTALLATION

AC210650 AB

Turbocharger
assembly

Protrusion

View A

A

Install the gasket so that its protrusion faces in the 
direction shown in the illustration.

>>C<< TURBOCHARGER OIL RETURN 
PIPE GASKET INSTALLATION

AC210682AB

Turbocharger
oil return pipe

Turbocharger oil return
pipe gasket protrusion

Install the gasket so that its protrusion faces in the 
direction shown in the illustration.

>>D<< OXYGEN SENSOR (FRONT) 
INSTALLATION

ACX02426 AB

MD998770

Use special tool oxygen sensor wrench (MD998770) 
to install the oxygen sensor (front).

INSPECTION

M1151009400013

Check the following points; replace the part if a prob-
lem is found.

Exhaust Manifold Check

1. Check for damage or cracking of any part.
2. Using a straight edge and a feeler gauge, check 

for distortion of the cylinder head installation 
surface.
Standard value: 0.15 mm or less 
Limit: 0.20 mm

Turbocharger Assembly Check

AC210683AB

Compressor wheel

1. Visually check the turbine wheel and the 

compressor wheel for cracking or other damage.

2. Check whether the turbine wheel and the 

compressor wheel can be easily turned by hand.

3. Check for oil leakage from the turbocharger 

assembly.

4. Check whether or not the turbocharger waste gate 

regulating valve remains open. If any problem is 
found, replace the part after disassembly.

EXHAUST PIPE AND MAIN MUFFLER

INTAKE AND EXHAUST

15-13

EXHAUST PIPE AND MAIN MUFFLER

REMOVAL AND INSTALLATION

M1151008700390

AC310642

13 ± 2 N·m

45 ± 5 N·m

59 ± 10 N·m

50 ± 5 N·m

49 ± 10 N·m

7

6

9

8

4

5

1

3

2

N

N

N

N

AB

13 ± 2 N·m

13 ± 2 N·m

10

11

5

11

Exhaust main muffler removal 
steps 

1. Exhaust main muffler
3. Exhaust pipe gasket
5. Exhaust muffler hangers

Centre exhaust pipe removal steps 

2. Centre exhaust pipe
3. Exhaust pipe gasket
4. Exhaust pipe gasket
6. Exhaust pipe hanger

Front exhaust pipe removal steps 

•

Under cover (Refer to GROUP 51, 
Front Bumper Assembly 

P.51-2

).

•

Crossmember bar (Refer to GROUP 
32, Engine Roll Stopper, 
Centremember 

P.32-7

).

7. Springs
8. Front exhaust pipe
9. Seal ring
10. Exhaust pipe gasket
11. Exhaust pipe hangers

NOTES