一辆ＺＬ4 0型装载机因起动系统故障 ,换了蓄电池和起动机的电磁开关。装车后发现 ,汽车起动时蓄电池火线、连接线烫手 ;蓄电池电压由 2 5Ｖ迅速降至 12～ 14Ｖ ,起动困难。于是决定拆检起动机。　　分解起动机 ,发现磁场绕组中有一组搭铁。搭铁处消耗大量电流 ,使蓄电池电压急 A ZL4 0 loader due to start-up system failure, change the battery and starter solenoid switch. After loading, it was found that when the vehicle was started, the battery was hot and the connection was hot; the voltage of the battery dropped rapidly from 2 V to 12 V to 14 V, causing difficulty in starting. So decided to dismantle the starter. Decomposition of the starter, found in the field winding a group of ground. Grounding consumes a lot of current, the battery voltage is urgent