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Mitsubishi 380. Manual - part 447

TIMING BELT

ENGINE OVERHAUL <3.8L ENGINE>

11B-14

8. Check to see that the timing marks of all the sprockets are in

alignment.

9. Rotate the crankshaft a quarter turn counterclockwise. Then

rotate it back clockwise to verify that all the timing marks are
aligned.

10.Loosen the flange bolt securing the tensioner pulley, and

then mount special tool MD998767 and a torque wrench on
the tensioner pulley.

11.Torque it to 4.4 N

⋅m (39 in-lb) with the torque wrench.

12.While holding the tensioner pulley in position, tighten the

flange bolt to the specified torque.

Tightening torque: 48

± 6 N⋅m (35 ± 4 ft-lb)

13.Rotate the crankshaft two turns clockwise and leave it alone

for approximately five minutes.

AK204322

CRANKSHAFT SPROCKET

RIGHT BANK

LEFT BANK

TIMING MARK

WATER PUMP

PULLEY

CAMSHAFT SPROCKET

IDLER PULLEY

AUTO-TENSIONER

TIMING MARK

TENSIONER PULLEY

AKX00728

MD998769

AKX00655AB

MD998767

TIMING BELT

ENGINE OVERHAUL <3.8L ENGINE>

11B-15

14.Check to see whether the metal wire inserted when the

auto-tensioner was installed can be removed without any
resistance.
If the metal wire can be removed without any resistance, it
means that the belt has a proper tension. Therefore, remove
the metal wire. In this condition, check that the rod
protrusion of the auto-tensioner is within the standard value.

Standard value: 4.8

− 6.0 mm (0.19 − 0.24 inch)

15.If the metal wire offers resistance when removed, repeat the

previous steps 10 through 13 until proper belt tension is
obtained.

>>E<< ENGINE SUPPORT BRACKET, RIGHT
INSTALLATION

The mounting bolts of the right engine support bracket must be
tightened in the order shown in the illustration.

Tightening torque: 45

± 5 N⋅m (34 ± 3 ft-lb)

Bolt length
85 mm (33.5 inch)

− Bolt 3

95 mm (37.4 inch)

− Bolt 2, 4

100 mm (39.4 inch)

− Bolt 1

INSPECTION

M1113002000458

TIMING BELT

Replace the belt if any of the following conditions exist.
1. Hardening of rubber backing.

Back side is glossy without resilience and leaves no indent
when pressed with fingernail.

2. Cracks on rubber back.

3. Cracks or peeling of canvas.

4. Cracks on tooth bottom.

5. Cracks on belt.

AK204327

ROD PROTRUSION

AKX00667

AKX00749

AKX00713

CRACKS

PEELING

CRACKS

TIMING BELT

ENGINE OVERHAUL <3.8L ENGINE>

11B-16

6. Abnormal wear of belt sides. Normal wear is indicated if the

sides are sharp as if cut by a knife. Abnormal wear is
indicated if the sides are ragged.

7. Abnormal wear on teeth.

Initial stage:
Canvas worn (fluffy canvas fibers, rubbery texture
gone, white discoloration, canvas texture indistinct)
Final stage:
Canvas worn, exposing rubber (tooth width reduced)

8. Missing tooth.

TENSIONER PULLEY AND IDLER PULLEY

Turn the pulley. If it does not rotate smoothly, or develops noise
or excessive play, replace the pulley.

AUTO-TENSIONER

1. Check for oil leaks. If oil leaks are evident, replace the

auto-tensioner.

2. Check the rod end for wear or damage and replace the

auto-tensioner if necessary.

3. Measure the rod protrusion. If it is out of specification,

replace the auto-tensioner.

Standard value: 12 mm (0.5 inch)

AKX00750

ROUNDED EDGE

ABNORMAL WEAR

(RAGGED)

AKX00751

RUBBER EXPOSED

TOOTH MISSING AND

CANVAS FIBER EXPOSED

AKX00650

AK204323AB

12 mm (0.5 in)

INTAKE MANIFOLD AND FUEL PARTS

ENGINE OVERHAUL <3.8L ENGINE>

11B-17

4. Press the rod with a force of 98 to 196 N (22 to 44 pounds)

and measure the movement of the rod.
If the measured value is out of the standard value, replace
the auto-tensioner.

Standard value: 1.0 mm (0.03 inch) or less

INTAKE MANIFOLD AND FUEL PARTS

REMOVAL AND INSTALLATION

M1113004300206

AK204324

MOVEMENT

98 TO 196 N

(22 TO 44 lb)

AK203973

12 ± 1 N·m

107 ± 8 in-lb

20 – 23 N·m

15 – 17 ft-lb

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