Mitsubishi Grandis. Manual - part 789

EXHAUST MANIFOLD

INTAKE AND EXHAUST

15-7

>>C<< EGR VALVE GASKET 
INSTALLATION

Install the EGR valve gasket as shown in the 
illustration.

INSPECTION

M1151003100713

Check the following points; replace the part if a 
problem is found.

INLET MANIFOLD CHECK

1. Check for damage or cracking of any part.
2. Clogging of the negative pressure (vacuum) outlet 

port, or clogging of the exhaust gas recirculation 
passages.

3. Using a straight edge and feeler gauge, check for 

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

EXHAUST MANIFOLD

REMOVAL AND INSTALLATION

M1151003300825

AC302358AE

Gasket

Notched
part

Notched
part

Pre-removal and Post-installation Operation
Air Cleaner Intake Duct Removal and Installation (Refer to 

P.15-3

).

AC313041

1

1

2

4

5

3

6

44 ± 5 N·m

44 ± 5 N·m

44 ± 5 N·m

49 ± 5 N·m

35 ± 6 N·m

14 ± 1 N·m

14 ± 1 N·m

N

AB

EXHAUST MANIFOLD

INTAKE AND EXHAUST

15-8

REMOVAL SERVICE POINTS
<<A>> OXYGEN SENSOR REMOVAL

Remove the connection and clamp of oxygen sensor 
connector, and then use the special tool oxygen 
sensor wrench (MB991953) to remove the oxygen 
sensor.

<<B>> FRONT EXHAUST PIPE REMOVAL

Remove the connection and clamp of oxygen sensor 
connector, and then remove the front exhaust pipe 
with the oxygen sensor.

INSTALLATION SERVICE POINT
>>A<< OXYGEN SENSOR INSTALLATION

1. Tighten the oxygen sensor to the specified torque 

by using special tool oxygen sensor wrench 
(MB991953).

Tightening torque: 44 

± 5 N⋅m

2. Connect the oxygen sensor connector and install 

the connector bracket.

INSPECTION

M1151003400480

Check the following points; replace the part if a 
problem 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

Removal steps

<<A>>

>>A<<

1.

Oxygen sensor

2.

Exhaust manifold cover

<<B>>

•

Front exhaust pipe (Refer to 

P.15-9

.)

3.

Exhaust manifold bracket B

4.

Exhaust manifold assembly

5.

Exhaust manifold gasket

6.

Exhaust manifold bracket A

AC301966

AE

MB991953

Oxygen sensor

AC301966

AE

MB991953

Oxygen sensor

EXHAUST PIPE AND MAIN MUFFLER

INTAKE AND EXHAUST

15-9

EXHAUST PIPE AND MAIN MUFFLER

REMOVAL AND INSTALLATION

M1151008700408

REMOVAL SERVICE POINTS
<<A>> RIVETS/HEAT PROTECTOR 
REMOVAL

CAUTION

Be careful not to score the heat protector by drill.

1. Use a 6.0 / diameter / mm drill to make a hole in 

the flange of rivet as shown.

2. Break the rivet, and remove the rivet and heat 

protector.

AC310364

2

1

AB

6

7

8

9

7

4

12

13

14

15

16

11

17

4

3

10

18

5

44 ± 5 N·m

59 ± 10 N·m

12 ± 2 N·m

12 ± 2 N·m

49 ± 5 N·m

N

N

N

N

N

N

48 ± 7 N·m

48 ± 7 N·m

Exhaust main muffler and heat 
protector removal steps

1.

Exhaust main muffler

6.

Exhaust pipe gasket

7.

Exhaust muffler hanger

<<A>>

>>B<<

8.

Rivets

<<A>>

>>B<<

9.

Heat protector
Centre exhaust pipe removal 
steps

2.

Centre exhaust pipe

6.

Exhaust pipe gasket

10. Exhaust pipe gasket
11. Exhaust muffler hanger

Catalytic converter and heat 
protector removal steps

3.

Catalytic converter

10. Exhaust pipe gasket
12. Seal ring
13. Exhaust pipe damper
14. Exhaust muffler hanger
15. Exhaust pipe hanger bracket

<<A>>

>>B<<

16. Rivets

<<A>>

>>B<<

17. Heat protector

Front exhaust pipe removal 
steps

<<B>>

>>A<<

4.

Oxygen sensor

5.

Front exhaust pipe

12. Seal ring
18. Exhaust pipe gasket

AC301909AC

Rivet

Drill

Heat 
protector

EXHAUST PIPE AND MAIN MUFFLER

INTAKE AND EXHAUST

15-10

<<B>> OXYGEN SENSOR REMOVAL

Remove the connection and clamp of oxygen sensor 
connector, and then use the special tool oxygen 
sensor wrench (MB991953) to remove the oxygen 
sensor.

INSTALLATION SERVICE POINTS
>>A<< OXYGEN SENSOR INSTALLATION

1. Tighten the oxygen sensor to the specified torque 

by using special tool oxygen sensor wrench 
(MB991953).

Tightening torque: 44 

± 5 N⋅m

2. Connect the oxygen sensor connector and install 

the connector bracket.

>>B<< HEAT PROTECTOR/RIVETS 
INSTALLATION

Use a riveter to tighten the rivet by the following 
procedure.

1. Insert part A of rivet into the riveter, and insert the 

rivet into the assembling area.

2. Operate the tool's handle while pushing the flange 

surface of rivet by riveter. Part A of rivet is cut and 
the rivet is tightened.

AC301966

AE

MB991953

Oxygen sensor

AC301966

AE

MB991953

Oxygen sensor

AC301910 AC

Rivet

Rivet

Riveter

Heat 
protector

Part A

Part A