Mitsubishi 380. Manual — part 446

TIMING BELT

ENGINE OVERHAUL <3.8L ENGINE>

11B-10

TIMING BELT

REMOVAL AND INSTALLATION

M1113001900618

AK302895

24 ± 3 N·m

17 ± 2 ft-lb

14 ± 1 N·m

122 ± 9 in-lb

88 ± 10 N·m

65 ± 7 ft-lb

23 ± 3 N·m

18 ± 2 ft-lb

44 ± 10 N·m

33 ± 7 ft-lb

44 ± 5 N·m

33 ± 4 ft-lb

48 ± 6 N·m

35 ± 4 ft-lb

11 ± 1 N·m

95 ± 9 in-lb

(M6 BOLT)

14 ± 1 N·m

122 ± 9 in-lb

(M8 BOLT)

8.5 ± 0.5 N·m

76 ± 4 in-lb

45 ± 5 N·m

34 ± 3 ft-lb

8

20

21

19

19

7

6

10

9

14

12

11

16

13

17

1

15

2

5

3

14 ± 1 N·m

122 ± 9 in-lb

(M10 BOLT)

4

18

AB

5.0 ± 1.0 N·m

44 ± 9 in-lb

REMOVAL STEPS

1.

TIMING BELT FRONT UPPER
COVER, RIGHT

2.

TIMING BELT FRONT UPPER
COVER, LEFT

3.

TIMING BELT FRONT LOWER
COVER

>>E<<

4.

ENGINE SUPPORT BRACKET,
RIGHT

5.

CRANKSHAFT POSITION SENSOR

<<A>> >>D<<

6.

TIMING BELT

>>C<<

7.

AUTO-TENSIONER

8.

TENSIONER PULLEY

9.

TENSIONER ARM

10. SHAFT
11. IDLER PULLEY
12. TENSIONER BRACKET
13. ADJUSTING BOLT
14. ADJUSTING STUD

>>B<<

15. CRANKSHAFT SPROCKET

>>B<<

16. CRANKSHAFT SPACER

>>B<<

17. CRANKSHAFT SENSING BLADE
18. KEY

<<B>> >>A<<

19. CAMSHAFT SPROCKET
20. BRACKET
21. TIMING BELT REAR COVER

REMOVAL STEPS (Continued)

TIMING BELT

ENGINE OVERHAUL <3.8L ENGINE>

11B-11

Required Special Tools:

• MB990767: End Yoke Holder

• MD998715: Pins

• MD998767: Tensioner Pulley Wrench

• MD998769: Crankshaft Spacer

REMOVAL SERVICE POINTS

.

<<A>> TIMING BELT REMOVAL

CAUTION

Water or oil on the belt shortens its life drastically, so the
removed timing belt, sprocket, and tensioner must be kept
free from oil and water. These parts should not be washed
or immersed in solvent. Replace parts if contaminated. If
there is oil or water on any part, check the front case oil
seal, camshaft oil seal, and water pump for leaks.
1. Mark the belt running direction for reinstallation.

2. Loosen the tensioner pulley bolt, and then remove the timing

belt.

.

<<B>> CAMSHAFT SPROCKET REMOVAL

1. While holding the camshaft sprocket with special tools

MB990767 and MD998715, loosen the camshaft sprocket
bolt.

2. Remove the camshaft sprocket.

INSTALLATION SERVICE POINT

.

>>A<< CAMSHAFT SPROCKET INSTALLATION

1. Fit the camshaft sprocket to the front end of the camshaft.

2. While holding the camshaft sprocket with special tools

MB990767 and MD998715, tighten the camshaft sprocket
bolt.

Tightening torque: 88

± 10 N⋅m (65 ± 7 ft-lb)

.

AK302434

AK302435AB

MB990767

MD998715

AK302436AB

MB990767

MD998715

TIMING BELT

ENGINE OVERHAUL <3.8L ENGINE>

11B-12

>>B<< CRANKSHAFT SENSING
BLADE/CRANKSHAFT SPACER/CRANKSHAFT
SPROCKET INSTALLATION

1. Clean the hole in the crankshaft sprocket.

2. Clean and degrease the mating surfaces of the crankshaft

sprocket, sensing blade, and spacer.

NOTE: Degreasing is necessary to prevent decrease in fric-
tion on the mating surfaces.

3. Align the location of pin and pin hole, and then apply equal

force in the direction of the arrow.

CAUTION

Do not bend the sensing blade when installing sprocket.

4. Install the crankshaft sprocket to the crankshaft.

.

>>C<< AUTO-TENSIONER INSTALLATION

If the auto-tensioner rod is fully extended, reset it as follows:
1. Clamp the auto-tensioner in the vise with soft jaws.

2. Push in the rod little by little with the vise until set hole A in

the rod is aligned with hole B in the cylinder.

3. Insert a wire [1.4 mm (0.055 inch) in diameter] into the set

holes. This auto-tensioner setting wire will be used during
timing belt alignment.

4. Unclamp the auto-tensioner from the vise.

.

>>D<< TIMING BELT INSTALLATION

CAUTION

Do not turn the camshaft when the piston in No.1 cylinder
is at top dead center on the compression stroke. Doing so
can cause the lifted valve to hit against the piston, damag-
ing parts.
1. Install special tool MD998769 and the crankshaft pulley

washer, and then tighten the crankshaft bolt.

2. Align the timing mark on the crankshaft sprocket with the

timing mark on the oil pump case, and then rotate the
sprocket three teeth counterclockwise.

AK101687

CLEAN

DEGREASE

CRANKSHAFT

SPACER CRANKSHAFT

CRANKSHAFT SENSING BLADE

CRANKSHAFT

SPROCKET

OIL PUMP CASE

AC

AK201830AD

PIN HOLE

PIN

AK204321AB

A

B

AKX00632

MD998769

CRANKSHAFT

SPROCKET

AB

TIMING MARK

TIMING BELT

ENGINE OVERHAUL <3.8L ENGINE>

11B-13

3. Align the timing mark on the left bank camshaft sprocket

with the timing mark on the rocker cover.

4. Align the timing mark on the right bank camshaft sprocket

with the timing mark on the rocker cover.

5. Align the timing mark on the crankshaft sprocket with the

timing mark on the oil pump case.

6. Install the timing belt on each sprocket and pulley in the

following sequence. Do not leave the belt slack between
each sprocket and pulley.

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

7. Install special tool MD998767 to the tensioner pulley. While

pushing the pulley lightly against the belt using the special
tool, tighten the flange bolt.

Tightening torque: 48

± 6 N⋅m (35 ± 4 ft-lb)

AKX00640

TIMING MARKS

LEFT

BANK

RIGHT

BANK

CAMSHAFT SPROCKET

AB

AKX00681AB

TIMING MARK

CRANKSHAFT

SPROCKET

MD998769

AKX00654AB

MD998767