Fig. 9.3. Starter device: 1 – body with winding; 2 – bearing housing; 3 – drive lever; 4 – traction relay; 5 - anchor; 6 – freewheel clutch; 7 – housing cover; 8 – brush holder; 9 – gear
The starter device is shown in Fig. 9.3.
1. When the ignition key is turned to the "start" position, voltage is supplied from terminal "50" of the ignition switch to the traction relay located in the upper part of the starter with forced engagement and self-disengagement of the gear.
2. The drive lever connected to the relay moves the starter gear along the armature shaft and engages it with the flywheel ring gear.
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3. When the pinion engages, the magnetic switch supplies voltage from the battery through the main contact. The pinion fully engages with the ring gear, and the circuit closes - the starter begins to turn the engine crankshaft.
4. If the engine starts and the key in the ignition switch is released, the magnetic field in the winding of the traction relay disappears. The drive lever is returned to its original position by the return spring. The gear disengages, and the voltage supply to the starter is interrupted.