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 printable version
Check of the current generated by the generator
This check is to determine whether the generator generates a current which is equivalent to the nominal capacity.
Preparing for inspection
| PERFORMANCE ORDER | 1. Before the test, check the following items:
- The state established in the car battery;
- Alternator drive belt tension. |
A warning  The battery, which is used to check the current produced by the generator must be partially discharged. When fully charged battery test can not be performed due to insufficient load generator.
| | 2. Turn on the ignition. | | 3. Disconnect the negative battery terminal. | | 4. Disconnect the terminals "B" of the generator. | | 5. Connect the DC ammeter to measure the limit of 0-100 A in series between the terminal "B" and disconnected from the alternator wire. Make sure that the negative probe of the ammeter connected to the generator disconnected from the wire. |
A warning Connect the wires and the ammeter probes are very reliable, since the chain will flow a large current.
| | 6. Connect a voltmeter (0-20) between terminal "B" of the generator and "weight". Make sure that the positive probe of the voltmeter connected to the terminal "B" of the generator. | | 7. Connect the tachometer and wire to the negative terminal of the battery. |  | 8. Leave the hood open. |
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Check
| PERFORMANCE ORDER | | 1. Check that the scale is clearly visible voltmeter to determine the voltage. If the voltmeter shows voltage of 0V, then do not complete an electrical circuit connecting the terminal "B" of the generator and the battery negative terminal, burned fuse or bad connection with "weight". | | 2. Start the engine and turn on the lights. | | 3. Turn on the main beam headlights and the heater fan at maximum air supply. Briefly increase the speed of the crankshaft of the engine to 2500 min-1 and the value read on the devices, while an ammeter shows the current produced by the generator. |
A warning After engine start battery charging current decreases very rapidly, so this test should be performed very quickly.
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Result of checking
| PERFORMANCE ORDER | | 1. The ammeter reading should be greater than the limit value. If the current value is less than the limit value, and a wire connecting the output of the generator, in order, remove the generator from the car and check it out. The current limit:
52.5 A to 75 A generator
63.0 A to 90 A generator |
A warning The current limit specified on the label attached to the body of the generator.
Electricity produced by the generator depends on the temperature and the load. Therefore, to limit discharge current battery upon enabling lights on the car with engine inoperative.
The limiting value of current generated by the generator can not be obtained if the temperature of the generator or the ambient air is too high.
| | 2. After completion of the test limit current produced by the generator, turn the engine to idle and turn the ignition off. | | 3. Disconnect the negative battery terminal. | | 4. Remove the tachometer, voltmeter and ammeter. | | 5. Connect a wire to the terminal "B" of the generator. | | 6. Connect the cable to the negative terminal of the battery. |
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