Mitsubishi 380. Manual - part 761

TIMING BELT

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-46

TIMING BELT

REMOVAL AND INSTALLATION

M1112004300775

Pre-removal and Post-installation Operation
• Engine Cover Removal and Installation (Refer to 

P.11A-14

.)

• Under Cover Removal and Installation (Refer to GROUP 

51, Under Cover 

P.51-13

.) 

• Side Under Cover Removal and Installation (Refer to 

GROUP 51, Under Cover 

P.51-13

.)

AC306787

45 ± 5 N·m
34 ± 3 ft-lb

48 ± 6 N·m
36 ± 4 ft-lb

44 ± 10 N·m
33 ± 7 ft-lb

23 ± 3 N·m
17 ± 2 ft-lb

41 ± 8 N·m
30 ± 6 ft-lb

14 ± 1 N·m
120 ± 13 in-lb

11 ± 1 N·m
98 ± 8 in-lb

185 N·m
136 ft-lb

14 ± 1 N·m
120 ± 13 in-lb

14 ± 1 N·m
120 ± 13 in-lb

11 ± 1 N·m
98 ± 8 in-lb

49 ± 9 N·m
36 ± 7 ft-lb

36 ± 6 N·m
27 ± 4 ft-lb

11 ± 1 N·m
98 ± 8 in-lb

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

AB

(ENGINE OIL)

REMOVAL STEPS

1.

GENERATOR DRIVE BELT

2.

POWER STEERING OIL PUMP 
DRIVE BELT

<<A>>

>>C<<

3.

CRANKSHAFT PULLEY

4.

CONTROL WIRING HARNESS 
AND INJECTOR WIRING 
HARNESS COMBINATION 
CONNECTOR

5.

KNOCK SENSOR CONNECTOR

6.

CRANKSHAFT POSITION 
SENSOR CONNECTOR

7.

CONNECTOR BRACKET

8.

ENGINE MOUNT STAY

9.

TIMING BELT FRONT UPPER 
COVER, RIGHT

10. TIMING BELT FRONT UPPER 

COVER, LEFT

11. TENSIONER PULLEY
12. TENSIONER BRACKET
13. CRANKSHAFT POSITION 

SENSOR HARNESS CLAMP

14. TIMING BELT LOWER COVER

REMOVAL STEPS (Continued)

TIMING BELT

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-47

Required Special Tools:

• MB991800: Pulley Holder

• MB991802: Pin B

• MD998767: Tension Pulley Socket Wrench

• MD998769: Crankshaft Pulley Spacer

REMOVAL SERVICE POINTS

.

<<A>> CRANKSHAFT PULLEY REMOVAL

CAUTION

Use only the specified special tools, or a damaged pulley 
damper could result.
Use special tools MB991800 and MB991802 to remove the 
crankshaft pulley from the crankshaft.

.

•

ENGINE FRONT MOUNTING 
BRACKET (REFER TO GROUP 
32, ENGINE MOUNTING 

P.32-4

.)

15. ENGINE SUPPORT BRACKET

<<B>>

>>B<<

16. TIMING BELT

>>A<<

17. AUTO-TENSIONER
18. TENSIONER PULLEY
19. TENSIONER ARM
20. SHAFT

REMOVAL STEPS (Continued)

ACX01675AB

MB991800

MB991802

TIMING BELT

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-48

<<B>> TIMING BELT REMOVAL

CAUTION

Never turn the crankshaft counterclockwise.
1. Turn the crankshaft clockwise to align each timing mark and 

to set the number 1 cylinder to compression top dead center.

2. If the timing belt is to be reused, chalk an arrow on the flat 

side of the belt, indicating the clockwise direction.

3. Loosen the center bolt of the tensioner pulley, then remove 

the timing belt.

INSTALLATION SERVICE POINTS

.

>>A<< AUTO-TENSIONER INSTALLATION

1. If the auto-tensioner rod remains fully extended, set 

according to the following procedure.

CAUTION

Place the auto-tensioner perpendicular to the jaws of the 
vice.

(1) Place two dolly blocks in a vice as shown in the 

illustration, and then place the auto-tensioner in the vice.

CAUTION

Never compress the pushrod too fast, or it may be dam-
aged.

(2) Slowly compress the pushrod of the auto-tensioner until 

pin hole A in the pushrod is aligned with pin hole B in the 
cylinder.

(3) Insert the setting pin into the pin holes once they are 

aligned.

NOTE: If replacing the auto-tensioner, the pin will already 
be inserted into the pin holes of the new part.

AC206490

TIMING MARK

TIMING MARK

CENTER 
BOLT

TENSION
PULLEY

CAMSHAFT
SPROCKET
(LEFT BANK)

CAMSHAFT
SPROCKET
(RIGHT BANK)

AB

AC205272

DOLLY BLOCKS

AB

AC206607

PIN HOLE A

PIN HOLE B

AB

TIMING BELT

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11A-49

CAUTION

Do not remove the setting pin from the auto-tensioner.

(4) Install the auto-tensioner to the engine.

.

>>B<< TIMING BELT INSTALLATION

1. Align the timing marks on the camshaft sprockets with those 

on the rocker cover and the timing mark on the crankshaft 
sprocket with that on the engine block as shown in the 
illustration.

CAUTION

The camshaft sprocket (right bank) can turn easily due to 
the spring force applied, so be careful not to get your fin-
gers caught.
2. Install the timing belt by the following procedure so that 

there is no deflection in the timing belt between each 
sprocket and pulley.

(1) Crankshaft sprocket
(2) Idler pulley
(3) Camshaft sprocket (Left bank)
(4) Water pump pulley
(5) Camshaft sprocket (Right bank)
(6) Tensioner pulley

3. Turn the camshaft sprocket (Right bank) counterclockwise 

until the tension side of the timing belt is firmly stretched. 
Check all the timing marks again.

4. Use special tool MD998767 to push the tensioner pulley into 

the timing belt, then temporarily tighten the center bolt.

5. Use special tool MD998769 to turn the crankshaft 1/4 turn 

counterclockwise, then turn it again clockwise until the 
timing marks are aligned.

AC206490

TIMING MARK

TIMING MARK

CENTER 
BOLT

TENSION
PULLEY

CAMSHAFT
SPROCKET
(LEFT BANK)

CAMSHAFT
SPROCKET
(RIGHT BANK)

AC

AC205274AB

MD998767

AC205275

MD998769

TIMING MARK

AB