«Minus» battery must always be connected to ground, and «plus» - connect to clamp «30» generator. An erroneous reverse connection of the battery will immediately cause increased current through the generator valves, and they will be damaged.
The generator must not be operated with the battery disconnected. This will cause transient overvoltages on the terminal «30» alternator, which can damage the rectifier valves 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» mass generator. In this case, a significant current flows through the valves, and they are damaged. 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 forbidden to check the car's electrical wiring with a megohmmeter 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.
It is necessary to check the insulation resistance of the generator stator winding with increased voltage only at the stand and always with the phase winding leads disconnected from the valves.
Wire connected to the plug «67» generator, should not be confused with the wire connected to the plug of the center terminal of the stator winding. If you mistakenly swap the wires, fuse 10 will blow (see fig. Fuses) and the contacts of the voltage regulator will be damaged.
When welding components and parts of the car body, disconnect the wires from all terminals of the generator and the battery.