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Drive Belt Tension CheckGenerator Drive Belt Tension Check
CAUTION: Turn the ignition switch off before connecting or disconnecting the scan tool.
1. Connect the scan tool
2. Connect the special tool (belt tension meter set) to the scan tool
3. Turn on the ignition switch and select "Belt tension measurement" from scan tool
4. Hold the microphone (MB991668) to the middle of the drive belt between the pulleys (at the place indicated by the arrow), about 10 - 20 mm (0.39 - 0.79 inch) away from the rear surface of the belt and so that it is perpendicular to the belt (within an inclination of ± 15°).
5. Gently tap the middle of the belt with your finger, and check that the vibration frequency of the belt is within the standard value range.
Standard value: 167 - 186 Hz
CAUTION:
1. Measure when the belt surface temperature is close to room temperature.
2. Make sure that water or oil. etc., does not get on the microphone.
3. If a strong wind blows or noise is made close to the microphone during measure, the meter will show a value that differs from the actual value.
4. If the measurement is taken with the microphone touching the belt, the meter will show a value that differs from the actual value.
5. Do not measure while the engine is running.
1. Check the belt tension with the tension gauge, or check the belt deflection by pressing the middle point of the belt by a force of 98 N (22 lbs.).
Standard value:
Tension: 400 - 490 N (90 - 110 lbs.)
Deflection