- conclusion «minus» battery must always be connected to the housing, and «plus» - connect to clamp «30» (9 — see fig. 127) generator. An erroneous reverse connection of the battery will immediately cause an increased current through the valves (rectifier diodes) generator and their failure to work;
- it is not allowed to operate the generator with disconnected from the clamp «30» rechargeable battery. This will cause transient overvoltages on the terminal «30» alternator, which can damage the voltage regulator and electronic devices in the vehicle's on-board network;
- it is forbidden to check the operability of the generator «for a spark» even short-term clamp connection «30» housing generator. 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 not allowed to check the generator valves with a voltage of more than 12 V or with a megohmmeter, as it has a voltage too high for the valves and they will be broken during the test (a short circuit will occur);
- it is necessary to check the insulation resistance of the generator stator winding with increased voltage only at the stand and always with the outputs of the phase windings disconnected from the valves;
- it is forbidden to check the car's electrical wiring with a megger or a lamp powered by a voltage of more than 12 V. If such a check is necessary, then first disconnect the wires from the generator;
- when welding components and parts of the car body, disconnect the wires from all terminals of the generator and the battery.
Possible malfunctions of the generator, their causes and remedies are given in tab. 19.