Mitsubishi 380. Manual - part 756

 

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Mitsubishi 380. Manual - part 756

 

 

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-26

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

• MD991999: Valve Stem Seal Installer

13. CAMSHAFT POSITION SENSOR 

SUPPORT

14. CAMSHAFT POSITION SENSING 

CYLINDER

<<B>>

>>F<<

15. CAMSHAFT SPROCKET
16. CAMSHAFT

<<C>>

>>E<<

17. CAMSHAFT OIL SEAL

VALVE STEM SEAL REMOVAL 
STEPS

ENGINE COVER (REFER TO 

P.11A-14

.)

1.

PCV HOSE CONNECTION

2.

PCV VALVE

3.

IGNITION COIL CONNECTOR

4.

IGNITION COIL

5.

ENGINE CONTROL WIRING 
HARNESS CLAMP

CAMSHAFT REMOVAL STEPS 

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)

SPARK PLUG (REFER TO 
GROUP 16, IGNITION COIL 

P.16-33

.)

<<D>>

>>C<<

18. VALVE SPRING RETAINER LOCK
19. VALVE SPRING RETAINER

>>B<<

20. VALVE SPRING

>>A<<

21. VALVE STEM SEAL
22. VALVE SPRING SEAT

VALVE STEM SEAL REMOVAL 
STEPS (Continued)

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-27

<RIGHT BANK>

AC307923AB

ENGINE OIL

CAM SECTION AND
JOURNAL SECTION

CYLINDER HEAD

13

11

12

15*

16*

17*

18*

N

7

N

1

2

3

4

5

6

N

8

9

10

11

12

N

13

14

N

15*

16*

17*

18*

N

31 ± 3 N·m
23 ± 2 ft-lb

10 ± 2 N·m
89 ± 17 in-lb

3.5 ± 0.5 N·m
31 ± 4 in-lb

19 ± 3 N·m
14 ± 2 ft-lb

88 ± 10 N·m
65 ± 7 ft-lb

19*

19*

CAMSHAFT REMOVAL STEPS

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

P.15-5

.)

TIMING BELT (REFER TO 

P.11A-46

.)

BATTERY AND BATTERY TRAY

HEATER HOSE AND WATER 
HOSE (REFER TO GROUP 14, 
WATER HOSE AND WATER PIPE 

P.14-40

.)

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)

<<B>>

>>F<<

10. CAMSHAFT SPROCKET
11. THRUST CASE
12. O-RING
13. CAMSHAFT

<<C>>

>>E<<

14. CAMSHAFT OIL SEAL

CAMSHAFT REMOVAL STEPS 

CAMSHAFT AND VALVE STEM SEAL

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-28

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

• MD991999: 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.15-5

.)

TIMING BELT FRONT UPPER 
COVER, RIGHT (REFER TO 

P.11A-46

.)

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.16-33

.)

<<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>

11A-29

<<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>

 

 

 

 

 

 

 

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