Mitsubishi Galant (2004+). Manual - part 139

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <2.4L ENGINE>

11A-29

Required Special Tools:

• MB990767: Front Hub and Flange Yoke Holder

• MD998713: Camshaft Oil Seal Installer

• MD998719: Pin

• MD998772: Valve Spring Compressor

• MD998774: Valve Stem Seal Installer

AC306536AB

18

17

16

15

14

13

12

28*

27*

26*

25*

24*

23

22

21

19

20

N

28*

25*

24*

11 ± 1 N·m
98 ± 8 in-lb

22 ± 4 N·m
16 ± 3 ft-lb

13 ± 1 N·m
115 ± 9 in-lb

31 ± 3 N·m
23 ± 2 ft-lb

47 ± 7 N·m
35 ± 5 ft-lb

25 ± 4 N·m
18 ± 3 ft-lb

89 ± 9 N·m
65 ± 7 ft-lb

N

N

APPLY ENGINE OIL
TO ALL MOVING
PARTS BEFORE
INSTALLATION.

11

14 ± 1 N·m
120 ± 13 in-lb

29*

29*

CAMSHAFT REMOVAL STEPS

11.

 CONNECTOR BRACKET

>>I<<

12.

CAMSHAFT POSITION SENSOR 
SUPPORT

13.

CAMSHAFT POSITION SENSING 
CYLINDER

<<A>>

>>H<<

14.

CAMSHAFT SPROCKET

>>G<<

15.

CAMSHAFT OIL SEAL

>>F<<

16.

EXHAUST ROCKER ARM SHAFT 
CAPS

<<B>>

>>F<<

17.

EXHAUST ROCKER ARM AND 
SHAFT ASSEMBLY

>>E<<

18.

INTAKE ROCKER ARM SHAFT CAPS

<<B>>

>>E<<

19.

INTAKE ROCKER ARM AND SHAFT 
ASSEMBLY

<<C>>

>>D<<

20.

CAMSHAFT 

•

WATER INLET FITTING AND 
THERMOSTAT CASE ASSEMBLY 
(REFER TO GROUP 14, WATER 
HOSE AND WATER PIPE 

P.14-22

).

21.

CYLINDER HEAD PLUG

22.

ENGINE OIL CONTROL VALVE 
FILTER

VALVE STEM SEAL REMOVAL 
STEPS

1.

CONTROL WIRING HARNESS 
CONNECTION

2.

ROCKER COVER PCV HOSE 
CONNECTION

3.

ROCKER COVER BREATHER HOSE 
CONNECTION

7.

ROCKER COVER ASSEMBLY

8.

ROCKER COVER GASKET

9.

SPARK PLUG GUIDE OIL SEALS

>>F<<

16. EXHAUST ROCKER ARM SHAFT 

CAPS

<<B>>

>>F<<

17. EXHAUST ROCKER ARM AND 

SHAFT ASSEMBLY

>>E<<

18. INTAKE ROCKER ARM SHAFT CAPS

<<B>>

>>E<<

19. INTAKE ROCKER ARM AND SHAFT 

ASSEMBLY

23. SPARK PLUGS

<<D>>

>>C<<

24. VALVE SPRING RETAINER LOCKS
25. VALVE SPRING RETAINERS

>>B<<

26. INTAKE VALVE SPRINGS

>>B<<

27. EXHAUST VALVE SPRINGS

>>A<<

28. VALVE STEM SEALS
29. VALVE SPRING SEATS

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <2.4L ENGINE>

11A-30

REMOVAL SERVICE POINTS

.

<<A>> CAMSHAFT SPROCKET REMOVAL
1. Hold the camshaft sprocket with special tools MB990767 

and MD998719.

2. Loosen the camshaft sprocket mounting bolt and remove 

the camshaft sprocket.

.

<<B>> EXHAUST ROCKER ARM AND SHAFT 
ASSEMBLY/INTAKE ROCKER ARM AND SHAFT 
ASSEMBLY REMOVAL

CAUTION

Never disassemble the exhaust rocker arm and shaft 
assembly, and intake rocker arm and shaft assembly.

.

<<C>> CAMSHAFT REMOVAL
1. Raise the transaxle assembly to a position in which the 

camshaft and transaxle mounting body side bracket do not 
touch it.

2. Remove the camshaft.

.

<<D>> VALVE SPRING RETAINER LOCKS REMOVAL

CAUTION

When removing valve spring retainer locks, leave the pis-
ton of each cylinder in the TDC (Top Dead Center) position. 
The valve may fall into the cylinder if the piston is not 
properly in the TDC position.
Use special tool MD998772 to compress the valve spring and 
then remove the valve spring retainer locks.

AC102532 AB

MB990767

MD998719

AC307020AB

CAMSHAFT

TRANSAXLE MOUNTING
BODY SIDE BRACKET

AC301867

AB

MD998772

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <2.4L ENGINE>

11A-31

INSTALLATION SERVICE POINTS

.

>>A<< VALVE STEM SEALS INSTALLATION
1. Apply a small amount of engine oil to the valve stem seals.

CAUTION

• Do not re-use the valve stem seal.
• The special tool MD998774 must be used to install the 

valve stem seal. Improper installation could result in oil 
leaking past the valve guide.

2. Use special tool MD998774 to fill a new valve stem seal in 

the valve guide using the valve stem area as a guide.

.

>>B<< EXHAUST VALVE SPRINGS/INTAKE VALVE 
SPRINGS INSTALLATION
Install the valve springs with its identification color painted end 
facing the locker arm.

.

>>C<< VALVE SPRING RETAINER LOCKS INSTALLATION
Use special tool MD998772 to compress the valve spring and 
then install the valve spring retainer lock in the same manner 
as removal.

.

AC308654AB

MD998774

VALVE

VALVE 
STEM 
SEAL

VALVE 
GUIDE

AC107415

AD

ROCKER ARM SIDE

IDENTIFICATION
COLOR
 INTAKE SIDE:
 LIGHT BLUE
 EXHAUST SIDE:
 ORANGE

AC301867

AB

MD998772

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <2.4L ENGINE>

11A-32

>>D<< CAMSHAFT INSTALLATION
Set the dowel pin of the camshaft in the position shown in the 
figure.

.

>>E<< INTAKE ROCKER ARM AND SHAFT 
ASSEMBLY/INTAKE ROCKER ARM SHAFT CAPS 
INSTALLATION
1. Place the intake rocker shaft so that its 5.5 mm (0.22 inch) 

hole faces toward the cylinder head.

2. Install the intake rocker arm shaft caps.
3. Tighten the intake rocker shaft mounting bolts to the 

specified torque.

Tightening torque: 31 

± 3 N⋅m (23 ± 2 ft-lb)

.

>>F<< EXHAUST ROCKER ARM AND SHAFT 
ASSEMBLY/EXHAUST ROCKER ARM SHAFT CAPS 
INSTALLATION
1. Install the exhaust rocker shaft so that its notch is positioned 

as shown.

2. Install the exhaust rocker arm shaft caps.
3. Tighten the exhaust rocker shaft mounting bolts to the 

specified torque.

Tightening torque: 13 

± 1 N⋅m (115 ± 9 in-lb)

.

>>G<< CAMSHAFT OIL SEAL INSTALLATION
1. Apply engine oil to the entire inner diameter of the oil seal 

lip.

2. Use special tool MD998713 to press-fit the oil seal as 

shown. 

AC301868

AB

DOWEL PIN

AC301869

ENGINE FRONT

AB

φ 5.5 mm
(0.22 in)

AC301870

ENGINE FRONT

AB

NOTCH

AC102323AC

MD998713

CAMSHAFT OIL SEAL

(ENGINE OIL)