Low turns of the crankshaft at engine start, dimmed light of headlights (especially at the turned-on high beam) indicate faulty operation of the generator of the car. To check it and to find faulty element it is possible several easy ways.
It is required to you
- - brush knot with the built-in integrated voltage controller;
- - voltmeter;
- - external voltage controller;
- - spare generator.
Instruction
1. Modern generators of cars develop three-phase alternating current which becomes straight the built-in diode bridge. In some models of generators in brush knots the integrated voltage controller is built-in. In other models the voltage controller external, it is in motor compartment of the car and is connected to brush node of the generator.
2. For check of operation of the voltage controller in the car include in it ignition system. Check the voltmeter tension on plus conclusion of the regulating relay. It has to equal to tension on the car accumulator. If this tension is absent, check supply circuit from the accumulator to the ignition lock, the ignition lock, supply circuit from the ignition lock to tension relay.
3. Then check tension which is going out of the relay - the voltage controller. Do it on the terminal of brush node of the generator. So you will check serviceability of chain from the regulator to the car generator. At the killed car engine this tension has to be equal or more than 8 Volts. In the absence of this tension check chain from it to the generator. If the chain is serviceable, replace tension regulating relay.
4. If in the car the generator with the integrated voltage controller which is built in its brush knot is installed, at the included ignition check whether voltage of 12 Volts on the terminal of brush knot arrives. If tension arrives, and the generator does not work – replace brush knot with the built-in integrated voltage controller.
5. Start the car engine. Lift crankshaft turns up to 3000 RPM. Measure tension on plus conclusion of the generator. It should not leave limit of 13.8-14.2 Volts. Include headlights in the mode of high beam. Once again measure tension size at the output of the generator. It can decrease, but it is not lower than 13.3 Volts. In that case the voltage controller is serviceable.