Mitsubishi Galant 9G. Manual — part 1384

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11C-30

Required Special Tools:

• MB990767: End Yoke Holder

• MD998443: Auto-lash Adjuster Holder

• MB991559: Camshaft Oil Seal Adapter Installer

• MD998713: Camshaft Oil Seal Installer

• MD998715: Crankshaft Pulley Holder Pin

• MD998772: Valve Spring Compressor

• MD998774: Valve Stem Seal Installer

REMOVAL SERVICE POINTS

.

<<A>> ROCKER ARM AND SHAFT ASSEMBLY
REMOVAL

1. Install special tool MD998443 as shown in the illustration so

that the lash adjusters will not fall out.

CAUTION

Never disassemble the rocker arm and shaft assembly.
2. Loosen the rocker arm and shaft assembly mounting bolt,

and then remove the rocker arm and shaft assembly with the
bolt still attached.

.

<<B>> CAMSHAFT SPROCKET REMOVAL

Use special tools MD998715 and MB990767 to remove the
camshaft sprocket.

.

VALVE STEM SEAL REMOVAL
STEPS

•

INTAKE MANIFOLD PLENUM
(REFER TO GROUP 15, INTAKE
MANIFOLD PLENUM

P.15-6

.)

•

TIMING BELT FRONT UPPER
COVER, RIGHT (REFER TO

P.11C-48

.)

1.

BREATHER HOSE CONNECTION

2.

BLOW-BY HOSE CONNECTION

3.

IGNITION COIL CONNECTOR

4.

IGNITION COIL

5.

ROCKER COVER

6.

ROCKER COVER GASKET

7.

SPARK PLUG GUIDE OIL SEAL

<<A>>

>>D<<

8.

ROCKER ARM, SHAFT AND
LASH ADJUSTER ASSEMBLY
(INTAKE SIDE)

<<A>>

>>D<<

9.

ROCKER ARM, SHAFT AND
LASH ADJUSTER ASSEMBLY
(EXHAUST SIDE)

•

SPARK PLUG (REFER TO
GROUP 16, IGNITION COIL

P.16-41

.)

<<D>>

>>C<<

15. VALVE SPRING RETAINER LOCK
16. VALVE SPRING RETAINER

>>B<<

17. VALVE SPRING

>>A<<

18. VALVE STEM SEAL
19. VALVE SPRING SEAT

VALVE STEM SEAL REMOVAL
STEPS (Continued)

AC205280

MD998443

AB

ACX00301AB

MB990767

MD998715

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11C-31

<<C>> CAMSHAFT OIL SEAL REMOVAL

1. Make a notch in the oil seal lip section with a knife, etc.

CAUTION

Be careful not to damage the camshaft and the cylinder
head.
2. Cover the end of a flat-tipped screwdriver with a shop towel

and insert into the notched section of the oil seal, and pry
out the oil seal to remove it.

.

<<D>> VALVE SPRING RETAINER LOCK
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
remove the valve spring retainer locks.

ACX00373AB

FLAT-TIPPED
SCREWDRIVER

CAMSHAFT

OIL SEAL

LIP
SECTION

AC205277

MD998772

AB

<LEFT BANK>

AC205278

MD998772

AB

<RIGHT BANK>

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11C-32

NOTE: Installation position of valve spring compressor special
tool (MD998772) is different between exhaust side and intake
side.

INSTALLATION SERVICE POINTS

.

>>A<< VALVE STEM SEAL INSTALLATION

1. Apply a small amount of engine oil to the valve stem seal.

CAUTION

• Valve stem seals cannot be reused.
• Special tool MD998774 must be used to install the valve

stem seal. Improper installation could result in oil leak-
ing 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.

.

AC204067AC

INSTALLATION POSITION

EXHAUST SIDE

INTAKE SIDE

RIGHTBANK

LEFTBANK

FRONT

EXHAUST SIDE

AC308654AB

MD998774

VALVE

VALVE
STEM
SEAL

VALVE
GUIDE

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11C-33

>>B<< VALVE SPRING INSTALLATION

Install the valve spring with its identification color painted end
facing the locker arm.

.

>>C<< VALVE SPRING RETAINER LOCK
INSTALLATION

Use special tool MD998772 to compress the valve spring in the
same manner as removal.

.

AC107415

AB

ROCKER ARM SIDE

IDENTIFICATION
COLOR

AC205277

MD998772

AB

<LEFT BANK>

AC205278

MD998772

AB

<RIGHT BANK>