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of 450 lines derived from the angles in the FirstNet wordmark and symbol he communication tool. It can be used on solid colors/photography, to highli


Thorough school bus inspections can identify issues such as loose screws and the cause of “shake, rattle and roll,” which drivers often cite as nuisances that lead to job dissatisfaction.


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“Predictive or proactive maintenance is more


costly for parts,” Jerreld added, “but they really cut down on the number of bus breakdowns. We only have a few breakdowns per year. When I started here 12 years ago, we had at least one a week. This enhances safety by not using worn and dated-wear parts.”


Casey said the school bus inspection training


at STN EXPO conferences sets-up participants to analyze all available data from the bus to pre- dict when failures will occur. “When we know the maximum service life of each component, we can set the replacement value at 95 percent of the failure rate,” he added. “That leads to tremendous savings because we no longer have highway breakdowns, which are very expensive. In fact, no down time.” He cited the example of how technicians can


determine the exact life span of starters and turbo chargers and know when to replace them. “We establish predictive maintenance intervals. This way, there are no unscheduled, unantici- pated repairs in the shop,” he asserted. Casey observed that, “In one district, turbo


failures averaged 100 to 105 per month, so we obviously needed to correct this problem. We lose a small amount of service life per part, but the result was no down time. That is a tremen- dous savings in time and money.”


32 School Transportation News • FEBRUARY 2020


Unfortunately, too many school districts


nationwide continue to not perform enough inspections, according to Casey. They still wait for parts to fail, which is a bad policy. “We really need to adopt a predictive maintenance pro- gram,” he opined, adding that he’s seen major parts not replaced in 10 to 15 years. “When we don’t neglect things on a bus, we have happy drivers. When a driver likes his bus, he treats it much better, thus leading to fewer breakdowns. Little things matter: Every bolt and screw can lead to problems and lost time.” Casey cited a 15- to 30-percent reduction in


highway failures in South Carolina by using predictive maintenance. For example, he pointed to a worn-out heater hose that fails during a route. That can lead to an overheated engine, loss of time and much higher costs. Predictive maintenance would have found and replaced the hose, he concluded. ●


Register for the National School Bus Inspection Training at the STN EXPO conferences this summer by visiting stnexpo.com and selecting the location you are interested in. Choose either “Unique Experiences” or “Special Training” under Attendees.


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