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Accumulator battery
Maintenance-free battery, as the name implies, requires no maintenance and has no vent plugs battery cans. There is no need to add water to the electrolyte maintenance-free battery.
| Fig. 7.47. Vetilyatsionnoe hole in the lid of the battery
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The battery is completely sealed, except for a small vent hole in the lid (Fig. 7.47).
| Fig. 7.48. Driving visual inspection of the battery
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Check the density of the electrolyte
| Fig. 7.49. Check the density of the electrolyte
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The density of the electrolyte of the battery varies with temperature. Heating dilutes the solution and reduces the density of the electrolyte. Cooling solution thickens and increases the density of the electrolyte (Fig. 7.49). When fully charged the battery electrolyte density must be equal to 1,260-1,280 g / cm 3 at a temperature of 26,7 ?� C. In the event the actual temperature of the electrolyte from the standard could be corrected: a density value must be added to paragraph 4 (0.004 g / cm 3) per 5,56 ?� C over the temperature value of 26,7 ?� C or subtract 4 points (0.004 g / cm 3) per 5.56 ?� C less than the temperature value 26,7 ?� C. For example: indicates the hydrometer density 1.280 g / cm 3 and a thermometer electrolyte temperature -12,2 ?� C (10 ?� F). In accordance with the above pattern, the measured density value to be reduced by 7 points (0.028 g / cm 3). Thus, given the density of the electrolyte at 26,7 ?� C is 1.252 g / cm 3. The formula calculated numbers: 1,280-0,028 = 1,252.
Do not attempt to measure the density of the electrolyte with a hydrometer immediately after the addition of water in the electrolyte. In order to prevent water and an electrolyte and mixed established uniform density, or for a few minutes, slowly charge (current of 5 A) battery or leave the fixed battery for about one hour (Fig. 7.50).
ATTENTION If any of the battery bank (one or more), the density of the electrolyte is different from the average value at 50 points (0.05 g / c m 3) or more, it is a sign of the presence of internal defects. In this case, the battery should be replaced. |
| Fig. 7.51. The circuit according to the density of the electrolyte on its temperature
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Visual inspection of battery Turn the ignition switch to ?�OFF?� and turn off all electrical accessories.
Disconnect the wires from the battery terminals (first disconnect the negative (-) terminals) (Fig. 7.52). Remove the battery from the vehicle.
ATTENTION Be especially careful if the battery case there are cracks or other sources of leakage of electrolyte, the electrolyte, avoid contact with skin. When removing the battery, always wear suitable rubber gloves (Do not use household gloves). |
Check the condition of the battery tray to the absence of corrosion damage due to leaking acid (electrolyte). In the presence of corrosion should be washed with a solution of the damaged area with clean warm water and baking soda. Clean damaged areas stiff wire brush and wipe with a cloth dipped in a solution of soda. Clean the top of the battery solution. Check the casing and battery cover for cracks. If there are cracks, replace the battery. Clean the battery terminals corresponding special cleaner. Clean the inner surface of the clamps contact connecting the battery cables corresponding special tool. Replace damaged or worn out connecting wires and damaged locks contacts. Install the battery in the car. Connect the contact of connecting wires to the terminals of the battery and ensure that the ends of the clamps contact is flush with the ends of the battery terminals. Tighten the lock nut of the connecting contact wires. After tightening, apply a little mineral grease to place all connections.
ATTENTION When charging the battery under the lid emit flammable and explosive gas. Do not smoke or use an open flame near the battery, which is on the charge, or was recently charged. Do not disconnect the circuit under voltage, near the battery, located on the charge. Spark may appear between the disconnected wire (to break the chain) and cause an explosion. Keep flammable materials away from open battery. |
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