Mitsubishi Lancer (4A9 engine). Manual — part 23

D998727

SPECIAL TOOLS

ENGINE MECHANICAL <4A9>

11A-6

MD998727

Oil pan FIPG cutter

Engine oil pan removal

D998781

MD998781

Flywheel stopper

Supporting the flywheel
assembly <M/T> or drive plate
assembly <A/T>

B991993

MB991993

Crankshaft front oil seal
guide

Crankshaft front oil seal
installation

MB990699

Differential oil seal installer

B991454

MB991454

Engine hanger balancer

Supporting the engine and
transmission assembly
NOTE: Special tool MB991454
is a part of engine hanger
attachment set MB991453.

B991527

MB991527

Hanger

Tool

Number

Name

Use

MB991895

ON-VEHICLE SERVICE

ENGINE MECHANICAL <4A9>

11A-7

ON-VEHICLE SERVICE

DRIVE BELT TENSION CHECK AND
ADJUSTMENT

M1111003103622

ALTERNATOR AND OTHERS BELT TEN-
SION CHECK

CAUTION

• When checking the drive belt tension, make

sure that the engine is cold.

• Check the drive belt tension after turning the

crankshaft clockwise one turn or more.

Check the alternator and others belt tension in the
following procedure.
NOTE: For the vehicles without A/C compressor, the
check procedure and the standard value are also
same.

Standard value:

Item

When
checked

When
adjusted

When
replaced

Vibration
frequency
Hz

140

− 171

148

− 164 198 − 221

Tension N

392

− 588

441

− 539 784 − 980

Deflection
mm
(Reference)

9.5

− 12.2

10.2

− 11.5 6.3 − 7.6

<When the vibration frequency is measured
{Special tool (MB992080) is used}:
Recommendation>
NOTE: The vibration frequency measuring method is
recommended for check and adjustment of the alter-
nator and others belt tension.

MB991895

Engine hanger

When the engine hanger is
used: Supporting the engine
assembly during removal and
installation of the timing chain
case assembly or transmission
assembly

B991928

a

b

c

d

e

f

Slide bracket (HI)

AI

MB991928

a: MB991929
b: MB991930
c: MB991931
d: MB991932
e: MB991933
f: MB991934

Engine hanger

a: Joint (50)

× 2

b: Joint (90)

× 2

c: Joint (140)

× 2

d: Foot (standard)

× 4

e: Foot (short)

× 2

f: Chain and hook assembly

B992000

MB992000

Crankshaft adapter

Cranking of the engine after the
crankshaft pulley removal

Tool

Number

Name

Use

AC507219AB

MB992082

MB992081

Belt tension meter set (MB992080)

ON-VEHICLE SERVICE

ENGINE MECHANICAL <4A9>

11A-8

1. Connect the Special tool microphone assembly

(MB992082) to the Special tool belt tension meter
(MB992081) of the Special tool belt tension meter
set (MB992080).

2. Press the "POWER" button to turn on the power

supply.

3. Press number key 1. Check to ensure that "No.

01" appears on the upper left of the display and
that the following numeric values are displayed for
individual items (M, W, and S):
M 000.9 g/m
W 010.0 mm/R
S 0100 mm
If numeric values have not been entered (new
tool), set them according to the belt specifications
as shown below. Once you set them, you do not
have to set them again. The settings remain
undeleted even after battery replacement.
NOTE: This operation is to temporarily set the
preset data such as the belt specifications,
because if the measurement is taken without input
of the belt specifications, conversion to tension
value (N) cannot be made, resulting in judgement
of error.
<Setting procedure>
(1) Press down the "MASS" button till the belt

mass select display appears.

(2) Press the "UP" or "DOWN" button to select "01

1.5GT 0.9" and press the "MEASURE" button
to decide it.
Check to ensure that "M 000.9 g/m" is
displayed.

(3) Press the "WIDTH" button to change to the

belt width input display.

(4) Press number keys 0, 1, 0, and 0 sequentially,

and press the "SELECT" button to apply them.
Check to ensure that "W 010.0 mm/R"
appears on the display.

(5) Press the "SPAN" button to change to the

span length input display.

(6) Press number keys 0, 1, 0, and 0 sequentially,

and press the "SELECT" button to apply them.
Check to ensure that "S 0100 mm" appears on
the display.

4. Press "Hz" button twice to change the display to

the frequency display (Hz).

CAUTION

•

AK603849

15˚

15˚

10 – 15 mm

Crankshaft
pulley

AC

Alternator
pulley

Water pump
pulley

A/C compressor pulley

MB992080
(Microphone)

The temperature of the surface of the belt should

be as close as possible to normal tempera-
ture.

• Do not let any contaminants such as water or

oil get onto the microphone.

• If strong gusts of wind blow against the

microphone or if there is loud sources of
noise nearby, the values measured by the
microphone may not correspond to actual
values.

• If the microphone is touching the belt while

the measurement is being made, the values
measured by the microphone may not corre-
spond to actual values.

• Do not take the measurement while the vehi-

cle's engine is running.

5. Hold the microphone to the middle of the

alternator and others belt between the pulleys (at
the place indicated by the arrow), about 10

− 15

mm away from the rear surface of the belt and so
that it is perpendicular to the belt (within an angle
of

± 15 °).

6. Press the "MEASURE" button.
7. Gently tap the middle of the belt between the

pulleys (the place 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: To take the measurement repeatedly, fillip
the belt again.

8. After the completion of the measurement, press

and hold the "POWER" button to turn off the
power supply.

ON-VEHICLE SERVICE

ENGINE MECHANICAL <4A9>

11A-9

<When using the tension gauge>

AK305688

Alternator
pulley

Water pump
pulley

A/C compressor
pulley

AB

Crankshaft
pulley

Tension
gauge

Use a belt tension gauge to check that the belt ten-
sion is within the standard value.
NOTE: Before inspection, remove the oil level gauge
guide.

<Belt deflection check>

AC700535

Alternator
pulley

Water pump
pulley

A/C compressor
pulley

AB

Approximately
100 N

Crankshaft
pulley

Deflection

Apply approximately 100 N of force to the middle of
the alternator and others belt between the pulleys (at
the place indicated by the arrow) and check that the
amount of deflection is within the standard value.

ALTERNATOR AND OTHERS BELT TEN-
SION ADJUSTMENT

AK402420AC

Nut for alternator
pivot bolt

Adjusting bolt

Alternator fixing nut

If not within the standard value, adjust the belt ten-
sion by the following procedure.
1. Loosen the nut of the alternator pivot bolt.
2. Loosen the alternator fixing nut.
3. Use the adjusting bolt to adjust the belt tension

and belt deflection to the standard values.

4. Temporarily tighten the alternator fixing nut.

Tightening torque: 11

± 3 N⋅m

5. Tighten the nut of the alternator pivot bolt.

Tightening torque: 47

± 5 N⋅m

6. Tighten the alternator fixing nut.

Tightening torque: 23

± 2 N⋅m

7. Tighten the adjusting bolt.

Tightening torque: 5.0

± 1.0 N⋅m

CAUTION

When checking the belt tension, turn the crank-
shaft clockwise one turn or more.
8. Check the belt tension, and readjust if necessary.
9. When the belt tension is adjusted by measuring

the deflection, adjust it with a tool for vibration
frequency measurement or tension measurement
afterward.

POWER STEERING OIL PUMP DRIVE
BELT TENSION CHECK <Euro4>

NOTE:

.

•

An elastic stretch-type belt is used for the power
steering oil pump drive, therefore, the tension
adjustment is not necessary.

•

Perform the power steering oil pump drive belt
tension check according to the following proce-
dures.

<When the vibration frequency is measured:
Recommendation>

CAUTION

• When measuring the vibration frequency,

make sure that the engine is cold.

•

AC605857

MB992081

MB992082

Belt tension meter set (MB992080)

AB

Measure the vibration frequency after turning
the crankshaft clockwise one turn or more.

1. Connect the special tool microphone assembly

(MB992082) to the special tool belt tension meter
(MB992081) of the special tool belt tension meter
set (MB992080).

2. Press the "POWER" button to turn on the power

supply.