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图１1.启动开关2.静触点3.动触盘4.铁芯5.保位线圈6.吸拉线圈7.传动杆8.小齿轮9.飞轮齿圈10.单向器11.换向器12.电刷13.电枢14.磁极我厂T140-1推土机所用QD27A型起动电机损坏是主机早期故障之一，用户反映强烈。为了解决这个问题，我们对该型号电机和国外电机进行了对比试验及
Figure 11. Start switch 2. Static contact point 3. Movable contact plate 4. Core 5. Retention coil 6. Suction coil 7. Transmission rod 8. Pinion 9. Flywheel ring gear 10. Uni-directional 11. Change 12. Brush 12. Armature 14. Pole I used in factory T140-1 bulldozers QD27A type starting motor damage is one of the host early failures, the user reflected strongly. In order to solve this problem, we compared the model motor and foreign motor and