Mitsubishi Lancer Evolution 7. Manual — part 145
ENGINE -
Special Tools
11A-5
SPECIAL TOOLS
Tool
Number
Name
Use
MB991502
MUT-II sub
assembly
D
Measuring the drive belt tension
D
Checking the ignition timing
D
Checking the idle speed
D
Erasing diagnosis code
D
Measuring the timing belt B tension
MB991668
Belt tension meter
set
D
Measuring the drive belt tension
(used together with MUT-II)
D
Measuring the timing belt B tension
(used together with MUT-II)
MD998727
Oil pan remover
For removing the oil pan
MD998781
Flywheel stopper
For fixing the flywheel
MD998776
Crankshaft
rear oil seal
installer
For pressfitting the crankshaft rear oil seal
MB990938
Installer bar
MD998285
Crankshaft
front oil seal
guide
For pressfitting the crankshaft front oil seal
MD998382
Crankshaft
front oil seal
installer
MB991654
Cylinder head bolt
wrench
For removal and installation of cylinder head
bolts
ENGINE -
Special Tools
11A-6
Tool
Use
Name
Number
MB991367
Special spanner
For retaining the crankshaft sprocket
MB991385
Pin
MB991704
Battery harness
Measuring the timing belt B tension
(used together with MUT-II)
MD998767
Tensioner pulley
socket wrench
For adjusting timing belt tension
MD998738
Adjusting bolt
For retaining the tensioner arm and the
auto-tensioner
MB991453
Engine hanger
attachment
set
Supporting the engine assembly during
removal and installation of the transmission
GENERAL
SERVICE
TOOL
MZ203827
Engine lifter
ENGINE -
On-vehicle Service
11A-7
ON-VEHICLE SERVICE
DRIVE BELT TENSION CHECK
1. Check that the indicator marking of the auto-tensioner
is within the range as shown in the illustration A of the
tensioner bracket.
Caution
Inspection must be carried out after turning the
crankshaft clockwise for more than once.
2. If the marking is outside the range as shown in the
illustration A, replace the drive belt.
NOTE
Due to the adoption of the auto-tensioner, no adjustment
for belt tension is required.
AUTO-TENSIONER CHECK
1. Check that the driver belt stays within the width of the
pulley of the auto-tensioner after turning off the engine
at idle.
2. Remove the drive belt.(Refer to P.11C-15.)
3. Use the 12.7sq. spinner handle and etc. to check that
the auto-tensioner is not stuck by turning it in both
directions.
4. If there is any abnormality in the above-mentioned 1
or 3, replace the auto-tensioner.
5. Install the drive belt.(Refer to P.11C-15.)
<Reference>
To determine whether the auto-tensioner is acceptable can
be done by checking the drive belt tension.
1. Use the following procedure to check the drive belt tension.
<When using MUT-II>
(1) Connect the special tool (MB991668) to the MUT-II.
(2) Connect the MUT-II to the diagnosis connector.
Caution
Connection and disconnection of the MUT-II must
be carried out after turning the ignition switch
to the “LOCK” (OFF) position.
(3) Turn the ignition switch to the “ON” position and select
“Belt Tension Measurement” from the menu screen.
Indicator
marking
A
ENGINE -
On-vehicle Service
11A-8
(4) Hold the special tool (MB991668) to the middle of
the belt between the pulleys (at the place indicated
by the arrow) about 10 - 20 mm away from the rear
surface and so that it is perpendicular to the belt
(within an angle of±15°).
(5) Gently tap the middle of the belt between the pulleys
(at 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.
Standard value: 110 - 144 Hz
Caution
1) Check the vibration frequency of the belt when
the temperature of the surface of the belt is
as close as possible to normal temperature.
2) Do not let any contaminants such as water
or oil get onto the microphone.
3) If strong gusts of wind blow against the
microphone or if there are any loud sources
of noise nearby, the values measured by the
microphone may not correspond to actual
values.
4) If the microphone is touching the belt while
the measurement is being made, the values
measured by the microphone may not
correspond to actual values.
5) Do not take the measurement while the
vehicle’s engine is running.
<When using belt tension gauge>
Use the belt tension gauge and check that the belt tension
of the middle of the belt between pulleys
(at the place indicated by arrow) is within the standard
value.
Standard value: 245 - 412 N
2. If the value is outside the standard value, replace the
drive belt.
Power steering
oil pump pulley
Water
pump
pulley
MB991668
10 - 20 mm
15°
15°
With your finger
tap gently
Belt tension
gauge
Power steering
oil pump pulley
Water pump
pulley
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