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7.2.2. Check of a power-supply circuit of a genrator

The variation magnetic field arising at rotation of a rotor of the generator induces in a stator phase winding a variable in size and the EMF direction (alternating voltage).

Procedure of check
1. Transfer an ignition lock key to the provision of "ON".
2. Make sure that the control lamp of the category of the rechargeable battery burns at the included ignition and the idle engine.
3. Disconnect the excitement winding resistor socket.

Fig. 7.9. Conclusions of sockets for check of a power-supply circuit


Connect ohmmeter samplers to conclusions 1 and 3 (from the resistor). Connect a wire (+) an ohmmeter to a conclusion 3, and a wire (–) of an ohmmeter – to a conclusion of 1 (fig. 7.9).

ATTENTION
If samplers of an ohmmeter are connected incorrectly, then the result of measurements will be incorrect. Make sure that device samplers correctly and are reliably connected.

Analysis of results
If the chain is closed when performing conditions of points 2 and 3, then the chain is serviceable.
If the chain is opened when performing conditions of points 2 and 3, then the chain is faulty, but the rechargeable battery is normal.
If the chain is opened only when performing conditions of point 2, then it is necessary to check and repair a chain of a control lamp a discharge of the rechargeable battery.
If the chain is opened only when performing conditions of point 3, then check and if necessary replace the excitement winding resistor.

NOTE
If the chain is opened only when performing conditions on one of points (2 or 3), then the system will be all the same efficient. However it is necessary to repair a faulty chain that the system of charging worked more reliably.