有些车辆油、电路均正常,但不易发动。接通起动机电路时,起动机负载转速低于正常值,但能较长时间地连续运转。拆开起动机检查时,并无铜套松旷、短路、搭铁、电刷磨损过多、电刷弹簧压力不足、换向器脏污等现象。在分析上述故障时我们发现有些起动机电刷端盖上的搭铁电刷架与端盖接触 Some vehicles oil, the circuit is normal, but not easy to start. Connected to the starter circuit, the starter load speed lower than normal, but can be a long time continuous operation. Open the starter check, no loose copper sleeve, short circuit, ground, excessive brush wear, brush spring pressure shortage, commutator dirt and so on. In the analysis of the above failures we found that some starter brush on the ground brush holder and cover contact