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对东风4C型机车在运用中出现的增压器、电机、电器、主机油泵、活塞、缸套等几种主要故障原因进行了分析，并提出了解决的具体措施。
The main causes of failure of turbocharger, motor, electric appliance, main engine oil pump, piston and cylinder liner appearing in the operation of DF4C locomotive are analyzed and the concrete measures are put forward.