Mitsubishi 380. Manual - part 755

CAMSHAFT OIL SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-22

CAMSHAFT OIL SEAL

REMOVAL AND INSTALLATION

M1112002200170

Required Special Tools:

• MB990767: End Yoke Holder

• MB991559: Camshaft Oil Seal Adapter Installer

• MD998713: Camshaft Oil Seal Installer

• MD998715: Crankshaft Pulley Holder Pin

REMOVAL SERVICE POINTS

.

<<A>> CAMSHAFT SPROCKET REMOVAL

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

.

Pre-removal and Post-installation Operation
Timing Belt Removal and Installation (Refer to 

P.11A-46

.)

AC205540

88 ± 10 N·m
65 ± 7 ft-lb

1

2

3

4

N

N

AB

REMOVAL STEPS

<<A>>

>>B<<

1.

LEFT BANK CAMSHAFT 
SPROCKET

<<B>>

>>A<<

2.

CAMSHAFT OIL SEAL

<<A>>

>>B<<

3.

RIGHT BANK CAMSHAFT 
SPROCKET

<<B>>

>>A<<

4.

CAMSHAFT OIL SEAL

REMOVAL STEPS (Continued)

ACX00301AB

MB990767

MD998715

CAMSHAFT OIL SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-23

<<B>> 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.

INSTALLATION SERVICE POINTS

.

>>A<< 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.

.

ACX00373AB

FLAT-TIPPED

SCREWDRIVER

CAMSHAFT

OIL SEAL

LIP 

SECTION

ACX00371AB

MB991559

MD998713

<LEFT BANK>

ACX00372AB

MD998713

<RIGHT BANK>

CAMSHAFT OIL SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-24

>>B<< 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)

ACX00301AB

MB990767

MD998715

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-25

CAMSHAFT AND VALVE STEM SEAL

REMOVAL AND INSTALLATION

M1112006600299

CAUTION

*Remove and assemble the marked parts in each cylinder unit.

<LEFT BANK>

01DB043A

10 ± 2 N·m

89 ± 17 in-lb

21*

20*

19*

18*

1

N

8

N

2

3

4

5

6

7

N

9

10

11

12

13

14

15

16

17

18*

19*

20*

21*

N

3.5 ± 0.5 N·m

31 ± 4 in-lb

31 ± 3 N·m

23 ± 2 ft-lb

11 ± 1 N·m

98 ± 8 in-lb

14 ± 1 N·m

120 ± 13 in-lb

22 ± 4 N·m

16 ± 3 ft-lb

88 ± 10 N·m

65 ± 7 ft-lb

N

ENGINE OIL

CAM SECTION AND

JOURNAL SECTION

16

22*

22*

CAMSHAFT REMOVAL STEPS

•

TIMING BELT (REFER TO 

P.11A-46

.)

•

THERMOSTAT HOUSING (REFER 
TO GROUP 14, WATER HOSE 
AND WATER PIPE 

P.14-40

.)

1.

PCV HOSE CONNECTION

2.

PCV VALVE

3.

IGNITION COIL CONNECTOR

4.

IGNITION COIL

5.

ENGINE CONTROL WIRING 
HARNESS CLAMP

6.

ROCKER COVER

7.

ROCKER COVER GASKET

8.

SPARK PLUG GUIDE OIL SEAL

<<A>>

>>D<<

9.

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

<<A>>

>>D<<

10. ROCKER ARM, SHAFT AND 

LASH ADJUSTER ASSEMBLY 
(EXHAUST SIDE)

11. CAMSHAFT POSITION SENSOR 

CONNECTOR

12. CAMSHAFT POSITION SENSOR

CAMSHAFT REMOVAL STEPS