2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42
This article discusses the starter, the device of this device.
The starter is an important mechanism in every car. This device is presented in the form of a four-pole, four-brush DC motor. The starter is located on the right side of the cylinder block and is fixed to the clutch housing with bolts.
The starter consists of the following parts:
- case;
- anchors;
- overrunning clutch;
- 2 caps;
- electromagnetic traction relay.
Starter relay value
The starter traction relay is responsible for engaging the drive gear of this device, as well as for closing the power supply circuit of the stator and armature windings. Bolts with contacts are located in the cover of the relay itself. One bolt is connected to the battery positive terminal and the other to the stator and relay windings.
In the process of turning the ignition key, voltage is supplied to the output of this cover of the starter tag relay, forming a magnetic field. Due to this, the armature is retracted, and the contact bolts are closed, affecting the drive lever. Then, during the interaction of magnetic fields, the starter armatureand the hubs begin to rotate, and the overrunning clutch rollers are wedged. The resulting torque is transmitted through the clutch itself and the drive gear to the flywheel crown. Due to the excess speed of the gear over the starter armature shaft, the clutch rollers are wedged, while the torque is not transmitted to the starter armature shaft.
If you return the key to the first position, then the power circuit of the windings of the starter traction relay and contacts will open. Due to which the drive gear is disengaged.
How to check the starter?
Checking the device can take place without a stand. For this procedure, you will need tongs and a multimeter. First you need to put the multimeter in voltage measurement mode on the terminals of the power supply. In this case, the battery must be 100% charged with a density of 1.28. After that, you need:
- See voltage drop when headlights are turned on and dimensions. With normal battery performance, this indicator will drop to 12.4-12.5 volts.
- Starter scrolling. To do this, you need an assistant who, on command, will turn on the starter. When scrolling, the voltage on the battery must be at least 10.5 volts. If sluggish rotation is observed at the indicated voltage drops, then this indicator should be checked on the wires going from the engine housing to the battery minus. Similar actions are carried out in relation to the positive wire.
It should be noted that starters with a planetary gear when unscrewedcandles, as well as starters without a gearbox, consume 20-30% less. If the reason is in the internal state, especially when it comes to the starter relay, then this device should be disassembled in order to identify existing defects. It is better to entrust this procedure to specialized centers, since often self-disassembly of the starter leads to its complete replacement. The starter test can be done in the garage as the process does not require any special tools.
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