Mitsubishi 380. Manual — part 316

MAINTENANCE SERVICE

GENERAL

00-42

ALTERNATOR DRIVE BELT TENSION
ADJUSTMENT

.

1. Loosen the tensioner pulley fixing nut.

2. With the tensioner pulley fixing nut temporarily tightened to

15

± 5 N⋅m (11 ± 4 ft-lb), set the belt tension or defection

amount to the standard value using the adjusting bolt.

Standard value:

3. Tighten the tension pulley fixing nut.

Tightening torque: 49

± 10 N⋅m (36 ± 7 ft-lb)

POWER STEERING DRIVE BELT TENSION
CHECK

.

WHEN USING DIAGNOSTIC TOOL (MUT-III)

Required Special Tools:

• MB991668: Belt Tension Meter Set
• Diagnostic Tool (MUT-III)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991910: MUT-III Main Harness A (BLUE)

Gently tap the middle of the belt between the pulleys (the loca-
tion indicated by the arrow) with your finger as shown in the
illustration, and check that the vibration frequency of the belt is
within the standard value.

NOTE: Refer to

P.00-39

for details on the method of measuring

the vibration frequency using the scan tool.

Standard value:

.

ITEMS

DURING
ADJUSTMENT

DURING
REPLACEMENT

Vibration
frequency Hz

150

− 163

180

− 202

Tension N (lb)

539

− 637

(121

− 143)

785

− 981

(176

− 221)

Deflection
(Reference value)
mm (in)

8.9

− 10.1

(0.35

− 0.40)

6.2

− 7.5

(0.24

− 0.30)

AK303695

TENSIONER

PULLEY

FIXING

NUT

ADJUSTING BOLT

AB

ITEM

WHEN
CHECKED

DURING
ADJUSTME
NT

DURING
REPLACEM
ENT

Vibration
frequency Hz

124

− 160

134

− 151

160

− 189

AC210247

15˚

15˚

MB991668
(MICROPHONE)

10 - 20 mm
(0.4 - 0.8 in)

TAP LIGHTLY
WITH A FINGER

POWER STEERING
OIL PUMP PULLEY

AB

MAINTENANCE SERVICE

GENERAL

00-43

WHEN USING A TENSION GAUGE

Use a belt tension gauge to check that the belt tension is within
the standard value.

Standard value:

.

BELT DEFLECTION CHECK

Apply approximately 98 N (22 lb) of force to the middle of the
drive belt between the pulleys (at the place indicated by the
arrow) and check that the amount of deflection is within the
standard value.

Standard value:

.

if the tension or deflection is outside the standard value, adjust
by the following procedure.
1. Loosen the tensioner pulley lock nut.

2. Adjust the belt tension to the standard value by turning the

adjusting bolt. The tension will increase when turning the
adjusting bolt clockwise, and decrease when turning
counterclockwise.

3. Tighten the lock nut to the specified torque.

Tightening torque: 49

± 9 N⋅m (36 ± 7 ft-lb)

4. Tighten the adjusting bolt.

Tightening torque: 5.0

± 1.0 N⋅m (44 ± 9 in-lb)

CAUTION

Check after turning the crankshaft one or more rotations
clockwise.
5. Check the belt deflection amount and tension, and readjust

if necessary.

ITEM

WHEN
CHECKED

DURING
ADJUSTMENT

DURING
REPLACEMENT

Tension N
(lb)

294

− 490

(66

− 110)

343

− 441

(77

− 99)

490

− 686

(110

− 154)

AC210249AB

TENSION
GAUGE

POWER
STEERING
OIL PUMP
PULLEY

CRANKSHAFT
PULLEY

TENSION
PULLEY

ITEM

WHEN
CHECKED

DURING
ADJUSTMENT

DURING
REPLACEMENT

Deflection
(Reference
value) mm
(in)

12.3

− 16.2

(0.48

− 0.64)

13.2

− 15.1

(0.52

− 0.59)

9.6

− 12.3

(0.38

− 0.48)

AC210250AB

APPROXIMATELY
98 N (22 lb)

CRANKSHAFT
PULLEY

TENSION
PULLEY

AC210301

ADJUSTING
BOLT

LOCK NUT

AB

MAINTENANCE SERVICE

GENERAL

00-44

8. EXHAUST SYSTEM (CONNECTIONS PORTION
OF MUFFLER, MUFFLER PIPES AND
CONVERTER HEAT SHIELDS) (CHECK AND
SERVICE AS REQUIRED)

M1001005800299

1. Check for holes and exhaust gas leaks due to damage,

corrosion, etc.

2. Check the joints and connections for looseness and exhaust

gas leaks.

3. Check the rubber hangers and brackets for damage.

9. ENGINE OIL (CHANGE)

M1001002600360

Use the specified oil. (Refer to

P.00-35

.)

WARNING

Use care as oil could be hot.

1. After warming up the engine, remove the oil filler cap.

2. Remove the drain plug to allow the engine oil to drain.
3. Install a new drain plug gasket so that it faces in the

direction shown in the illustration, and then tighten the drain
plug to the specified torque.

Tightening torque: 39

± 5 N⋅m (29 ± 3 ft-lb)

4. Pour new engine oil in through the oil filler hole.

Specified Engine Oil:
Total quantity:

<3.8L Engine> 4.6 Litres

5. Install the engine oil filler cap.

6. Start the engine and run it at idle for a few minutes.
7. Pull out the oil dipstick slowly and check that the oil level is

within the marks on the oil dipstick.

8. Check that the oil is not excessively dirty, that there is no

coolant or petrol mixed in, and that it has sufficient viscosity.

10. ENGINE OIL FILTER (REPLACE)

M1001002700345

The quality of replacement filters varies considerably. Only high
quality filters should be used to assure most efficient service.
Genuine oil filters require that the filter is capable of withstand-
ing a pressure of 1,800 kPa (261 psi) are high quality filters.

.

AC305937

DRAIN PLUG
GASKET

OIL PAN SIDE

39 ± 5 N·m
29 ± 3 ft-lb

AB

<3.8L ENGINE>

AC205268

MAXIMUM

MINIMUM

GOOD

AB

MAINTENANCE SERVICE

GENERAL

00-45

Engine Oil Filter Selection

This vehicle is equipped with a full-flow, throw-away oil filter.
The same type of filter is recommended as a replacement filter
for this vehicle. It is possible, particularly in cold weather, that
this vehicle may develop high oil pressure for a short duration.
Make sure that any replacement filter used on this vehicle is a
high-quality filter. The filter must withstand a pressure of 1,800
kPa (261 psi) [manufacturer's specifications] to avoid filter and
ultimately engine damage. The Genuine Mitsubishi high-quality
filter and is strongly recommended for use on this vehicle.
Any replacement oil filter should be installed in accordance with
the oil filter manufacturer's installation instructions.

.

Oil Filter Replacement

WARNING

Use care as oil could be hot.

1. Drain the engine oil by removing the oil drain plug.
2. Use an oil filter wrench to remove the engine oil filter.

3. Clean the filter bracket side mounting surface and ensure

the old O-ring has been removed.

4. Apply a small amount of engine oil to the O-ring of the new

oil filter.

5. Where the oil filter O-ring touches the oil pan flange, tighten

the oil filter to the specified torque using the
commercially-available tool.

Tightening torque:

: Approximately 3/4 turn [14

± 2 N⋅m]

6. Add new engine oil through the oil filler.

11. TRANSMISSION FLUID

M1001002900338

TRANSMISSION FLUID CHECK

1. Drive the vehicle until the transmission fluid temperature

rises to the normal operating temperature [70

− 80°C (158 −

176

°F)].

NOTE: The transmission fluid temperature is measured with
Diagnostic Tool (MUT-III).

AC000093

MB991610 OR
GENERAL
SERVICE
TOOL

AG

ACX00396

O-RING

AB