Mitsubishi Lancer Evolution X. Manual - part 63

SPECIAL TOOLS

TSB Revision

ENGINE MECHANICAL

11A-5

MB992278
Belt tension release wrench

Auto-tensioner tension 
release

MB990767
Front hub and flange yoke 
holder

MB990767-01

Holding the crankshaft 
pulley

MD998719
Pin

MIT308239

MB992103
Chain tension release bar

−

Camshaft and camshaft 
sprocket assembly 
(exhaust side) removal

MD998772
Valve spring compressor

General service 
tool

Valve spring compression

MB992090
Retainer holder attachment

−

MB992089
Retainer holder C

−

MB992085
Valve stem seal pliers

−

Valve stem seal removal

Tool

Tool number and name

Supersession

Application

MB992278

B990767

D998719

B992103

MD998772

B992090

SPECIAL TOOLS

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ENGINE MECHANICAL

11A-6

MD998737
Valve stem seal installer

MD998737-01

Valve stem seal 
press-fitting

MD998727
Oil pan FIPG cutter

MD998727-01

Oil pan removal

MB991883
Flywheel stopper

General service 
tool

Supporting the flywheel

MB991448
Bush remover and installer 
base

MB991448-01

Press-fitting the crankshaft 
front oil seal

MB992201
Engine hanger plate

−

Support of engine and 
transaxle assembly

Tool

Tool number and name

Supersession

Application

D998727

MB991883

B992201

ON-VEHICLE SERVICE

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ENGINE MECHANICAL

11A-7

ON-VEHICLE SERVICE

DRIVE BELT TENSION CHECK

M1111003102254

1. Remove the radiator condenser tank. (Refer to GROUP 14, 

Radiator 

P.14-32

).

CAUTION

Check the drive belt tension after turning the crankshaft 
clockwise one turn or more.
2. Make sure that the indicator mark on the auto-tensioner is 

within the area marked with A in the illustration.

3. If the mark is out of the area A, replace the drive belt (Refer 

to 

P.11A-21

).

NOTE: The drive belt tension check is not necessary as the 
auto-tensioner is adopted.

4. Install the radiator condenser tank. (Refer to GROUP 14, 

Radiator 

P.14-32

).

MB991454
Engine hanger balancer

MZ203827-01

Support of engine 
assembly

MB991895
Engine hanger

Tool not available

MB991928
Engine hanger

a: MB991929

Joint (50) ×  2

b: MB991930

Joint (90) ×  2

c: MB991931

Joint (140) ×  2

d: MB991932

Foot (standard) ×  4

e: MB991933

Foot (short) ×  2

f: MB991934

Chain and hook assembly

Tool not available

Tool

Tool number and name

Supersession

Application

B991454

MB991895

B991928

a

b

c

d

e

f

Slide bracket (HI)

AC506730 AC

A

Indicator mark 

Auto-tensioner

ON-VEHICLE SERVICE

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ENGINE MECHANICAL

11A-8

AUTO-TENSIONER CHECK

M1111003002138

OPERATION CHECK

Required Special Tool:
MB992278: Belt tension release wrench
1. Stop the engine from the idle state.
2. Remove the radiator condenser tank. (Refer to GROUP 14, 

Radiator 

P.14-32

).

3. Check that the drive belt is not protruding from the pulley 

width of the auto-tensioner.

4. Remove the drive belt (Refer to 

P.11A-21

).

5. Using the special tool MB992278 and a straight offset 

wrench as shown, check that no binding is present by 
turning the auto-tensioner in the left and right directions.

6. If there are any problems in the procedure 3 or 5, replace 

the auto-tensioner. (Refer to 

P.11A-66

).

7. Install the drive belt. (Refer to 

P.11A-21

).

8. Install the radiator condenser tank. (Refer to GROUP 14, 

Radiator 

P.14-32

).

FUNCTION CHECK

The auto-tensioner can be checked whether it is in good condi-
tion by checking its tension.

.

<When the vibration frequency is measured: 
Recommendation>

Required Special Tools:

• MB992080: Belt Tension Meter Set

• MB992081: Belt Tension Meter
• MB992082: Mic Assembly

1. Check the tension of the drive belt. (Refer to 

P.11A-7

).

2. Check the tension of the drive belt in the following 

procedures.

(1) Connect special tool microphone assembly (MB992082) 

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

(2) Press the "POWER" button to turn on the power supply.
(3) Press the numeral key of "1" and check that "No. 1" 

appears on the upper left of the display.
NOTE: This operation is to temporarily set the preset 
data such as the belt specifications, because if the mea-
surement is taken without input of the belt specifications, 
conversion to tension value (N) cannot be made, result-
ing in judgement of error.

(4) Press "Hz" button twice to change the display to the 

frequency display (Hz).

AC804028

AE

Auto-tensioner

MB992278

AC507219AD

MB992082

MB992081

Belt tension meter set (MB992080)