Rated output current. 75 A.
Diagnostics
After 15 minutes warm up (in steady state) at a voltage of 13.5 V at the terminals.
Table 4.12
These vehicles are equipped with alternators and internal ventilation, a built-in voltage regulator and a warning light in the instrument panel, which works as follows:
- when the ignition is turned on, the lamp lights up;
- after starting the engine, the lamps go out;
- If the lamp lights up again and the engine is running, this indicates a malfunction in the battery charging circuit.
Troubleshooting
The signal lamp does not light up when the ignition is switched on.
Check:
- reliability of electrical connections;
- is the lamp burnt out (before that, connect the circuit to ground, the lamp should turn on).
The signal lamp lights up while the engine is running.
This indicates a problem with the charging circuit, which may be caused by:
- breakage of the generator drive belt, breakage of the wire between the generator and the battery;
- damage to the internal generator tea (rotor, stator, diode or brushes);
- voltage regulator malfunction;
- too high output voltage.
The customer complains about the lack of charging, and the signal light works fine.
If the regulated voltage is below 13.5V, check the alternator. The reason for my failure is:
- destruction of the diode;
- phase break;
- the formation of soot on the slip rings or their wear.
Voltage test
Connect a voltmeter to the battery terminals, measure its voltage.
Start the engine and increase its speed until the voltmeter needle stabilizes at the regulated voltage.
This voltage must be between 13.5V and 14.8V.
Attention! When performing work on the car, connected with electric welding, be sure to disconnect the battery and the voltage regulator.
Removal and installation
Required special tool
- Mot. 1273 Belt tension tester.
1. Place the vehicle on a two post lift.
2. Disconnect the battery.
3. Disconnect the generator electrical connectors
4. Remove the right forward fender liner.
5. Remove details of fastening of the generator.
6. Remove the belt.
7. Remove bracket A.
8. Remove the cross member mounting bolts and move it aside to be able to remove the generator.
9. Install in the reverse order of removal. Belt tension adjustment values are given in chapter «Maintenance».