Checking the voltage regulator at the generator 37.3701
a - release since 1996; b - release before 1996; 1 - rechargeable battery; 2 - output "weight" voltage regulator; 3 - voltage regulator; 4 - output "W" regulator; 5 - output "IN" regulator; 6 - control lamp; 7 - output "B" voltage regulator
Checking the voltage regulator at the G-222 generator
1 - rechargeable battery; 2 - voltage regulator; 3 - control lamp
The operation of the voltage regulator is to continuously and automatically change the generator excitation current in such a way that the generator voltage is maintained within the specified limits when the generator speed and load current change.
Vehicle check
1. To check, you must have a DC voltmeter with a scale of up to 15–30 V, an accuracy class of at least 1.0.
2. After 15 minutes of engine operation at medium speed with the headlights on, measure the voltage between the terminal "30" and generator weight. The voltage should be between 13.6-14.6 V.
3. In the event that a systematic undercharging or overcharging of the battery is observed and the regulated voltage does not fit within the specified limits, the voltage regulator must be replaced.
Checking the removed regulator
1. The regulator, removed from the generator, is checked according to the diagrams shown in fig. Checking the voltage regulator at the generator 37.3701 and fig. Checking the voltage regulator at the G-222 generator. The generator regulator 37.3701, which was used until 1996, is best checked as an assembly with a brush holder (see fig. Checking the voltage regulator at the generator 37.3701, b), since in this case it is possible to immediately detect breaks in the brush leads and poor contact between the leads of the voltage regulator and the brush holder.
2. between brushes (or between pins "W" And "IN" regulator at the G-222 generator) turn on the lamp 1-3 W, 12 V. To the conclusions "IN", "B" (if he is) and connect the power supply to the regulator ground, first with a voltage of 12 V, and then with a voltage of 15–16 V.
3. If the regulator is working, then in the first case the lamp should be on, and in the second it should go out.
4. If the lamp lights up in both cases, then there is a breakdown in the regulator, and if it does not light up in both cases, then either there is an open in the regulator, or there is no contact between the brushes and the outputs of the voltage regulator (at the generator 37.3701 release until 1996).