<![CDATA[Analysis of the durability of the v-belt of bus vehicles with a capacity of 7684 cc Rear Engine. The v-belt used is COG type with type C (22 x 14). There are several factors that affect the life of the v-belt , namely, the straightness of the v-belt with the pulley, the heat received by the v-belt with a standard – 30 °C / + 90 °C , the tightness or flexibility of the v-belt, the distance traveled and the time taken. traversed by vehicles, pulley wear and v-belt wear. test the hardness of the rubber material and the heat resistance of the v-belt by using an infrared thermometer measuring instrument and determine the physical condition of the v-belt by testing rubber materials using a shore durometer D measuring instrument and based on a distance of 50,000 kilometers (Low). The results of the average v-belt rubber hardness test are 57.5 shore durometer D, from the average results The average hardness test of rubber v-belt at a distance of 100,000 kilometers (Medium) obtained the results of 60.7 shore durometer D. On an average of 140,000 kilometers (High) there was an increase from the standard 55 Shore durometer D increased to 62.5 Shore durometer D and the physical condition of the v-belt is wearing and cracking at the bottom of the v-belt . The v-belt wears out at the bottom width of the v-belt at a distance of 50,000 kilometers, 100,000 kilometers and 140,000 kilometers. At the top width v-belt wears out at 140,000 kilometers. So as to prevent the v-belt from breaking when the vehicle is operating at a mileage of 140,000 kilometers the v-belt had to be replaced. If the v-belt breaks while the engine is operating, it will cause a very dangerous disturbance to the bus engine cooling system. With all the existing factors, the result of the age of the v-belt with the normal condition of the unit or SOP and the vehicle operating normally is 4 months 5 days 9.6 hours.]]>
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