Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 327

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ENGINE <4G1> –

4. Hold the microphone to the middle of the drive belt between

the pulleys (at the place indicated by the arrow), about

10 – 20 mm away from the rear surface of the belt and

so that it is perpendicular to the belt (within an angle of

5. 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.

(1) The temperature of the surface of the belt should be

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

(5) Do not take the measurement while the vehicle's

engine is running.

Use a belt tension gauge to check that the belt tension is

within the standard value.

Apply 98 N 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.

On-vehicle Service

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