Checking AB

Full status check AB includes:

- Check the level of electrolyte in batteries;

- Measurement of the density of the electrolyte in the battery;

- Measurement of the electromotive force (EMF) AB;

- Measurement of the battery voltage.

Checking the level of electrolyte in batteries

As already mentioned, AB unattended. It is filled with sulfuric acid, which is diluted with distilled water. Part of the water can evaporate, so from time to time, check the electrolyte level and if necessary top up with distilled water as well as insufficient amount of electrolyte reduces the service life of the battery.

To check the electrolyte level, remove the filler plug batteries. A glass tube with an inner diameter of 3-5 mm in the lower filling hole battery all the way into the safety net, Pinch the top opening of the tube and carefully remove it from the battery. The height of the column of electrolyte remaining in the bottom of the tube should be in the range of 10-15 mm. At the same time pay attention to the color of the electrolyte. Brown or brown electrolyte shows that the active mass of the positive plates crumbled.

In addition to the translucent body AB is marked "MAX" and "MIN". The electrolyte level is considered normal if it is between these tags.

If the electrolyte level is below normal in the battery should be topped up with distilled water. Top up the water with the engine off when the cold AB.

Measuring the density of the electrolyte

According to the density of the electrolyte is judged on the state of charge of the battery. The lower the density, the stronger the AB discharged. The density of the electrolyte can be measured using a hydrometer or densitometer. The tube is lower the hydrometer into the battery, and a rubber bulb dial it up the electrolyte until the float ascends. The division, which will be shipped to the float and shows the density of the electrolyte.

Measuring the density of the electrolyte of the rechargeable battery using a densitometer more convenient since there are no glass parts - a body with the tube and seven floats are made of plastic, and, secondly, it is easier to use. The numbers marked on the housing, against each of the float indicates the lowest density at which it floats. Float indicating the density of 1.27 g / cm3, painted in yellow or red. The density of the electrolyte is determined by the pop-up float with the greatest number.

If the electrolyte is small, first add distilled water to the battery, and only one and a half to two hours, when the water will mix with the electrolyte, proceed to the measurement of the density.

Upon receipt of a value equal to 1.28 g / cm3, AB is fully charged; at a value of 1.12 g / cm3 - is dead.

Charging AB

AB can be recharged from any DC source with a voltage exceeding its rated voltage. There are two basic ways of charging AB: with a constant current and constant voltage.

The first method is better (in terms of depth and completeness of charge), but it requires a long time and constant monitoring of the charging process. The second method is even and does not provide a full charge AB, but allows you to keep it in working order.

When charging AB is advisable to use a charger that provides battery charging method of constant current.

Before charging, AB, do the following:

- Remove the AB from the vehicle or disconnect it from the electrical system;

- Unscrew the filler plug from the battery and just put them on the filling openings;

- Put around AB newspaper or something like that, since the electrolyte during charging almost certainly be shed;

- Ensure good ventilation of the room, if the charge is held indoors.

Charging AB spend in the following order:

- AB Connect terminals to the corresponding terminals on the charger;

- Connect the charger and set the power of the charging current of 10% of the capacity of AB;

- While charging AB periodically check the strength of the current, the temperature of the electrolyte, the electrolyte density;

AB is considered fully charged if within 2 hours the density of the electrolyte and the battery voltage will be constant, and when charging occurs rapid gassing ("boiling" the electrolyte);

- Turn the power off the charger;

- Disconnect the charger from the terminals AB, tighten the filler plug.

Removing and installing AB

AB is located in the engine compartment and the engine is mounted clamping plate to the tray. Before removing AB make sure you have a written code of radio.

Before removing AB sure to turn off the ignition and all current consumers.

Removing AB spend in the following order:

- Loosen the nut on the terminal "minus" the wires and remove the plug from the output of AB;

- Loosen the nut on the terminal "plus" wire and remove the plug from the output of AB;

- Remove the bolt 3 (fig. 333) that secures the clamp at the bottom of AB 2 and remove it;

- Remove the rechargeable battery of a vehicle.

Before installing AB:

- Check the condition of polar conclusions AB. Close-white or greenish patina removed with a cloth soaked in hot water;

- Strip the conclusions of batteries and the terminals for the medium grit sandpaper to a metallic luster;

- Wash and dry the cover AB, its side walls and a bottom. This will prolong the life of the tray on which it is installed and located in the vicinity of metal parts;

- Check the level of electrolyte.

Installation AB spend in reverse order, with:

- Make sure that the AB has been securely attached to the tray, as its vibration causes damage to the lead plates;

- Grease the pole terminals AB Bosh special grease or Vaseline;

- First connect the terminal to the conclusion AB "plus" wire, and then - "minus";

- After connecting the wires to the terminals AB conclusions they both cover the protective film (PVC grease or BTB-1, "Unisma?�, WD-40);

- Enter the security code in the radio and set the time on the clock.

Starting with a discharged by AB "Booster"

When starting the engine from the external power source, such as another vehicle AB, consider the following features:

- Use of the possibility of launching special cables for the "Booster", intended for vehicles with electronic ignition;

- Try to buy auxiliary starting cables with copper wire inside, as the aluminum wire at the "Booster" very hot, the result may melt the insulation and removing the wires can be badly burned;

- For vehicles with engine capacity of 2.5 liters of starting cross-section of the cable must be at least 16 mm2. The size of its cross section is indicated on the packaging;

- Starting cable should have a powerful connection terminals.

Starting with a discharged AB spend in the following order:

- Adjust the car- "donor" (from which will be "Booster") against the hood Sharan, so you can attach the auxiliary starting cable to the discharged AB;

AB both cars must have the nominal voltage - 12 V, and about the same capacity;

- Check the fluid level in the discharged AB. If necessary, restore it, topping up with distilled water;

- Check the connection AB to the car;

- Discharged AB is not disconnected from the onboard vehicle network;

- Both cars should be put on the parking brake, switch gear manual gearbox to translate into neutral and automatic transmission - in the park position "P";

- Switch off the ignition;

- Turn off the car all consumers of a current;

- Check the clamps and the insulation of the auxiliary starting cable;

- Attach the starter cord in the following order:

1 - terminal "+" of the cable to the discharged AB;

2 - terminal "+" of the cable to the charged AB;

3 - Clip "-" Cable charged to AB;

4 - Clip "-" cable to the "weight" of the car body;

- Start the engine car- "donor" and bring it to a steady idle;

- Start the engine of the car with the discharged AB. When starting the starter should not exceed 7 - 10;

- If the engine does not start immediately, do prior to each new attempt to break 30 - 40 to the starter motor to cool down;

- Print engine with discharged rechargeable batteries at a stable idle. Turn on 10- 15 with all electrical consumers on the vehicle the maximum power;

- If the engine is running steadily, disconnect the auxiliary starter cable in the reverse order (i.e. 4, 3, 2 and 1).

There are other ways to start up the engine when discharged AB.

Starting with "push" or when towing a car is the most famous ways to start the engine with the discharged AB. However, these methods have to give up if the engine does not start because of a faulty ignition system, or if the AB too exhausted (ignition devices control lamps are off).