Mitsubishi 380. Manual - part 757

 

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Mitsubishi 380. Manual - part 757

 

 

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-30

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 MD991999 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 MD991999 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

01DB052A

MD991999

VALVE

VALVE 

STEM 

SEAL

VALVE 

GUIDE

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-31

>>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>

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-32

>>D<< ROCKER ARM AND SHAFT ASSEMBLY 
INSTALLATION

1. Install the rocker arm, shaft and lash adjuster assembly.

2. Tighten the mounting bolts to the specified torque.

Tightening torque: 31 

± 3 Nm (23 ± 2 ft-lb)

3. Remove special tool MD998443.

4. Check that notches in the each rocker shaft are facing the 

direction shown in the illustration.

.

AC205280

MD998443

AB

AC204149

AC

NOTCH

NOTCH

FRONT

NOTCH

NOTCH

<RIGHTBANK>

<LEFTBANK>

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-33

>>E<< CAMSHAFT OIL SEAL INSTALLATION

1. Apply engine oil to the camshaft oil seal lip.
2. Use special tools MD998713 and MB991559 to press-fit the 

camshaft oil seal.

.

>>F<< CAMSHAFT SPROCKET INSTALLATION

1. Use special tools MD998715 and MB990767 in the same 

way as during removal to install the camshaft sprocket.

2. Tighten the camshaft sprocket mounting bolt to the specified 

torque.

Tightening torque: 88 

± 10 Nm (65 ± 7 ft-lb)

ACX00371AB

MB991559

MD998713

<LEFT BANK>

ACX00372AB

MD998713

<RIGHT BANK>

ACX00301AB

MB990767

MD998715

 

 

 

 

 

 

 

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