When operating, maintaining and repairing the generator, the following rules must be observed, the violation of which may lead to damage to the voltage regulator or rectifier valves.
Conclusion "minus" battery must always be connected to ground, and "plus" - connect to clamp "30" (8, see fig. 152) generator. An erroneous reverse connection of the battery will immediately cause an increased current through the generator valves and their failure.
It is not allowed to operate the generator with disconnected from the clamp "30" consumer wires (especially with the battery disconnected). This will cause a dangerous increase in voltage on the valves, and they may be damaged.
It is forbidden to check the operability of the generator "for a spark" even short-term clamp connection "30" alternator with ground or plug "67". In this case, a significant current flows through the valves, and they break through. You can only check the generator with an ammeter and a voltmeter.
It is forbidden to check the charging current circuits with a megohmmeter or a lamp supplied with a voltage of more than 36 V. If such a check is necessary, then first disconnect the wires from the generator and voltage regulator.
It is necessary to check the quality of the stator insulation with increased voltage only at the stand and always with the leads of the phase windings disconnected from the valves.
When welding components and parts of the car body, disconnect the wires from all terminals of the generator and the battery.