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 N⋅m (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 N⋅m (65 ± 7 ft-lb)
ACX00371AB
MB991559
MD998713
<LEFT BANK>
ACX00372AB
MD998713
<RIGHT BANK>
ACX00301AB
MB990767
MD998715
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