Preparing for the test
1. Before testing, check the following items:
- a) the condition of the battery installed in the vehicle;
Note: The battery used to test the current generated by the alternator must be partially discharged. If the battery is fully charged, the test cannot be performed due to insufficient load on the alternator.
- b) tension of the generator drive belt.
2. Turn off the ignition.
3. Disconnect the cable from the negative terminal of the battery.
4. Disconnect the wire from the generator terminal "B".
5. Connect a 0-100A DC ammeter in series between terminal "B" and the wire disconnected from the generator. Make sure that the negative probe of the ammeter is connected to the wire disconnected from the generator.
Note: Connect the wires and ammeter probes very securely as a large current will flow through the circuit.
6. Connect a voltmeter (0-20 V) to the generator terminal "B" and to ground.
Make sure the positive probe of the voltmeter is connected to the "B" terminal of the generator.
7. Connect the tachometer and the wire to the negative terminal of the battery.
8. Leave the hood open.
Examination
1. Check that the voltmeter scale is clearly visible to determine the voltage value. If the voltmeter shows a voltage of 0 V, then the electrical circuit connecting the generator terminal "B" and the negative terminal of the storage battery is not closed, the fuse link is burnt out, or the connection to the "ground" is unreliable.
2. Start the engine and turn on the headlights.
3. Turn on the high beam headlights and the heater fan to maximum air supply. Briefly increase the engine speed to 2,500 min⁻¹ and read the values on the instruments, while the ammeter will show the maximum current produced by the generator.
Note: After starting the Hyundai Getz engine, the battery charging current decreases very quickly, so this check must be performed very quickly.
Check result
1. The ammeter reading should be greater than the limit value. If the current value is less than the limit value and the wire connecting the generator output is normal, remove the generator from the car and check it.
Current Limit:
- generator 70A: not less than 49.0 A
- generator 90A: not less than 63.0 A
Note.
- 1. The nominal current value is indicated on the plate attached to the generator body.
- 2. The current generated by the generator depends on the temperature and load. Therefore, to obtain the maximum current value, partially discharge the battery, first turning on the headlights of the car with the engine off.
The maximum value of current produced by the generator cannot be obtained if the generator or ambient air temperature is too high.
Original version of the article on the website: www.hyundaibook.ru
2. After completing the generator current limit test, idle the engine and turn off the ignition.
3. Disconnect the cable from the negative terminal of the battery.
4. Remove the tachometer, voltmeter and ammeter.
5. Connect the wire to the "B" terminal of the generator.
6. Connect the cable to the negative terminal of the battery.