Mitsubishi Outlander GS45X. Manual - part 1223

CYLINDER HEAD AND VALVES

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ENGINE OVERHAUL <3.0L ENGINE>

11D-45

CYLINDER HEAD AND VALVES

REMOVAL AND INSTALLATION

M1113006902987

AK600803

3

20

→ +150˚

45 ± 2 N·m
33 ± 1 ft-lb

1

2

4
5

6

7

8

9

10

11

13

15

18

19

17

14

16

12

AC

Apply engine oil to
all moving parts
before installation.

Removal steps 

>>D<<

1. Cylinder head bolt
2. Cylinder head assembly
3. Cylinder head gasket

<<A>> >>C<<

4. Retainer lock
5. Valve spring retainer

>>B<<

6. Valve spring
7. Intake valve

<<A>> >>C<<

8. Retainer lock
9. Valve spring retainer

>>B<<

10. Valve spring

11. Exhaust valve

<<B>> >>A<<

12. Valve stem seal
13. Valve spring seat

<<B>> >>A<<

14. Valve stem seal
15. Valve spring seat
16. Intake valve guide
17. Exhaust valve guide
18. Intake valve seat
19. Exhaust valve seat
20. Cylinder head

Removal steps (Continued)

CYLINDER HEAD AND VALVES

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ENGINE OVERHAUL <3.0L ENGINE>

11D-46

Required Special Tools:

• MB991614: Angle Gauge

• MB992085: Valve Stem Seal Plier

• MB992182: Valve Stem Seal Installer

• MD998735: Valve Spring Compressor

REMOVAL SERVICE POINTS

.

<<A>> RETAINER LOCK REMOVAL

1. Using special tool MD998735, compress the spring.
2. Remove the retainer locks.

.

<<B>> VALVE STEM SEAL REMOVAL

Using the special tool MB992085, nip the valve stem seal and 
remove it.

INSTALLATION SERVICE POINTS

.

>>A<< VALVE STEM SEAL INSTALLATION

1. Install the valve spring seat to the valve guide.

CAUTION

• Valve stem seals for intake valves and for exhaust 

valves are different. Be sure to install the correct ones.

• Valve stem seal identification color. 

Intake: GRAY

 

Exhaust: GRAY GREEN

AK600900

MD998735

AC

AK600901

MB992085

AC

AK600913AC

Exhaust valve
stem seal
Color: gray green

Intake valve
stem seal
Color: gray

CYLINDER HEAD AND VALVES

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ENGINE OVERHAUL <3.0L ENGINE>

11D-47

CAUTION

• Always use the special tool to install the valve stem 

seal. Improperly installed valve stem seals may leak oil.

• Do not strike the valve stem seal strongly because it 

might be damaged.

2. Using special tool MB992182, install a new stem seal to the 

valve guide.
NOTE: After install, check the special tool does not stick to 
the valve spring sheet. Put the valve spring sheet in position.

.

>>B<< VALVE SPRING INSTALLATION

Install the valve spring end with its identification color toward 
the spring retainer.

Identification color

Intake: White
Exhaust: Blue

.

>>C<< RETAINER LOCK INSTALLATION

Using special tool MD998735, compress the valve spring and 
insert the retainer lock into position.

.

AK600902

MB992182

AC

AK600914

Identification color
painted end

AC

AK600900

MD998735

AC

CYLINDER HEAD AND VALVES

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ENGINE OVERHAUL <3.0L ENGINE>

11D-48

>>D<< CYLINDER HEAD BOLT INSTALLATION

CAUTION

Attach the head bolt washer in the direction shown in the 
figure.
1. Tighten the bolts in the illustrated sequence two or three 

rounds.

Tightening torque: 45 

± 2 N⋅m (33 ± 1 ft-lb)

CAUTION

• When the tightening angle is smaller than the specified 

tightening angle, the appropriate tightening capacity 
cannot be secured.

• When the tightening angle is larger than the specified 

tightening angle, remove the bolt to start from the 
beginning again according to the procedure.

2. Using the special tool MB991614, tighten the cylinder head 

bolt another 150 degrees.

AK600899

AK600915

Timing belt side

Right
bank

Left
bank

AC

AK600851

150˚

MB991614

AC