7.3.4. Checks of system of a charge
Remember that failure of the generator is not the only possible cause of infringement of serviceability of functioning of system of a charge. At identification of signs of system failure execute the following checks:
- Check a state and effort of a tension of a driving belt of the generator, in case of need make its replacement;
- Check reliability of tightening of bolts of fastening of the generator;
- Check a condition of an electrical wiring of the generator and its terminal connections, in case of need remove oxidation products, tighten fixture;
- Check a condition of the corresponding safety locks located in the main assembly block (see the Head Onboard electric equipment), - before replacement of the punched safety lock remove the cause of an overload;
- Start the engine and make sure that the generator does not publish any extraneous noises, - whistle or squeal can testify to wear of bearings or brushes;
- Check completeness of level of a charge of the rechargeable battery, - you remember that damage of one of cans can lead to increase in current of consumption;
- Disconnect from the battery both wires (at first negative) and attentively study a condition of polar plugs, - in case of detection of traces of corrosion carefully smooth out plugs, it is desirable with use of special devices, track reliability of fixing on plugs of tips of wires.
Check of output tension
Petrol models
Scheme of connection of the generator and arrangement of its contact plugs (diesel models)
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- Check correctness of a tension of a driving belt of the generator, measure the output tension of the rechargeable battery at the switched-off engine, - the result of measurement has to make about 12.4 Century.
- Start the engine, - if the control lamp of a charge in a combination of devices (see the Head Governing bodies and methods of operation) regularly dies away right after implementation of start miss two following checks and you pass to implementation of the procedure.
- Include ignition and test the voltmeter all three plugs of the generator, - on plugs B and S the battery tension (about 12 V) has to take place, the result of measurement on the plug L has to make to 1 V. Zapustita the engine and repeat check, - at all three plugs there has to be tension of 14.1 ÷ 14.7 Century.
- At positive results of the performed measurements check serviceability of a condition of an electrical wiring on the site of a chain between the battery and the plug B of the generator, otherwise check all electrical wiring brought to the generator, - if no violations manage to be revealed, replace the generator (see the Section Removal and installation of the generator).
- Disconnect an electrical wiring from the generator plug B, include everything onboard consumers of the electric power and squeeze out a pedal of a foot brake. Connect the ampermeter between the plug B of the generator and the socket of an electrical wiring, - if at turns of the engine 2500 ÷ 3000 in a minute force of the measured current makes not less than 65 And, therefore, the system of a charge functions regularly, otherwise it is necessary to check correctness of a tension of a driving belt and, in case of need, to make the corresponding adjustment (see the Head the Current leaving and service). If a belt as it should be, replace the generator (see the Section Removal and installation of the generator).
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Diesel models
Scheme of connection of the generator and arrangement of its contact plugs (diesel models)
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- Disconnect a negative wire from the battery.
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- Connect to the generator the voltmeter and the ampermeter according to the scheme.
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- Connect a negative wire to the battery.
- Start the engine and include headlights.
- Gradually lift turns of the engine and consider the size of force of output current of the generator. If in the presence of output current the indication of the voltmeter exceeds the battery tension, the generator as it should be.
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Check of the vacuum pump of the generator (diesel models)
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- Paste a reflecting adhesive tape on a starter pulley and connect a tachometer to the engine.
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- Connect the vacuum gage to a vacuum hose on the site between the vacuum pump and the vacuum amplifier of brakes.
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- Start the engine and check correctness of dependence of performance data of the pump (depth of the created tension) on the frequency of rotation of the generator (see Specifications of the Head Sistema of electric equipment of the engine).
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Frequency of rotation of the generator is removed by means of a photo-electric tachometer. |
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- Attentively study a condition of components of pump assembly, - estimate degree of wear of the case and the central disk, make sure of integrity of a sealing ring, measure length of shiberny shovels and internal diameter of a casing. Compare results of measurements to requirements of Specifications of the Head Sistema of electric equipment of the engine. In case of need make replacement.
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Wear of the lower surfaces of shiberny shovels about the directing ring of the central disk is norm and should not cause concerns. |
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