16.7. Check of the developed tension

The purpose of this test consists in checking that the electronic regulator of tension supports the developed tension at the required level.

Preparation for check

PERFORMANCE ORDER
1. Before test check the following elements:

– the rechargeable battery installed in the car has to be completely charged;
– check a generator drive belt tension.
2. Turn a key in the ignition lock in the provision of "OFF".
3. Disconnect a wire from the negative plug of the rechargeable battery.
4. Connect the digital voltmeter between the plugs "S (L)" of the generator and "weight". Connect the positive probe of the voltmeter to the generator S (L) plug.
5. Disconnect a wire from the generator plug "B".
6. Connect the ampermeter of a direct current with a limit of measurement 0–100 A consistently between the plug "B" and the wire disconnected from the generator. Make sure that the negative probe of the ampermeter was connected to the wire disconnected from the generator.
7. Connect a tachometer and a wire to the negative plug of the rechargeable battery.

Check

PERFORMANCE ORDER
1. Check that the scale of the voltmeter is well visible to determination of size of tension.

The voltmeter has to show tension of the rechargeable battery.

If the voltmeter shows voltage of 0 V, so the electric chain connecting the S (L) plug of the generator and the positive plug of the rechargeable battery is not closed or the fusible insert fused.
2. Start the engine and switch off everything consumers of electric energy.
3. Increase the frequency of rotation of a bent shaft of the engine up to 2 500 min.-1 and when current decreases up to the size less than 10 And, read value of tension on the voltmeter.

Result of check

PERFORMANCE ORDER
1. If tension corresponds to the required value, so the regulator of tension is serviceable and works normally. If tension differs from demanded, so the regulator of tension or the generator are faulty.
Temperature of the regulator of tension, °C
Adjustment of tension, In
Generator 75 A
Generator 90 A
– 20
14,2–15,4
14,3–15,2
20
13,9–14,9
14,1–14,7
60
13,4–14,6
13,5–14,4
80
13,1–14,5
13,3–14,3
2. After completion of test of extreme value of the current developed by the generator transfer the engine to the mode of idling and switch off ignition.
3. Disconnect a wire from the negative plug of the rechargeable battery.
4. Remove a tachometer, the voltmeter and the ampermeter.
5. Connect a wire to the generator plug "B".
6. Connect a wire to the negative plug of the rechargeable battery.