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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz E-Class

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Mercedes-Benz E-class
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Mercedes-Benz
E-class
Introduction
Description of the model Mercedes E-Class
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Car Care
Diesel engines
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Electrical
Accumulator battery
Battery - energy storage
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Checking the level of electrolyte in the battery, service contacts.
Checking the battery charge
Start the engine from the external power supply
Charging the battery
Removing the battery
Detection of faulty consumer
Checking the voltage regulator
Removing the generator
Removing and installing starter
Lighting
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Device combination
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The system of airbags and seat belt pretensioners
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Accumulator battery







Location battery under the rear seat on the right side in the T-model (wagon) a similar arrangement in a sedan
Fig. 9.1. Location battery under the rear seat on the right side in the T-model (wagon) a similar arrangement in the sedan: 1 - the storage battery; 2 - negative terminal, "mass" (-); 3 - ventilation tube; 4 - Mount the battery; 5 - the fuse box


In all E-Class cars battery is located under the rear seat on the right side. To access the battery is necessary to remove the rear seat cushion (sedan) or lap right rear seat (T-model), the battery itself is closed extra cover. In the engine compartment is a control pin for battery check. He is represented by "+" (Fig. 9.1).

Apparatus battery
Fig. 9.2. Apparatus battery 1 - the positive electrode lattice; 2 - positive electrode; 3 - separator; 4 - negative electrode lattice; 5 - the negative electrode; 6 - Block negative electrodes; 7 - section of the battery; 8 - Block the positive electrode


The six series-connected batteries form battery (12) (Fig. 9.2). A battery consists of a positive and negative plates, which together provide voltage of 12 V. The plates consist of lead grids which are filled with an active electrolyte. Positive plates made of lead dioxide, the negative - of pure lead. Between them, the separator is installed. He shared the plate, preventing the closure, but the electrolyte can pass through its tiny pores. Electrolyte - a conductive fluid, which consists of about 37% concentrated sulfuric acid and 63% distilled water.

Technical Dictionary
Accumulator battery
Marking. Located on the battery indicates its response. For example, the marking "12 V 74Ah 350 A?� indicates the following: 12 - rated voltage; 74 A ?� h - nominal capacity; 350 A - Control discharge current.
The nominal battery voltage of 12 V. costavlyaet actual voltage depends on the degree of charge of the battery, it can be higher or lower than the nominal.
The rated capacity is the current that is fully charged battery can give up to 20 hours at a temperature of +27 ?� C, no voltage drop at the terminals of not less than 10.5 V.
Controlling the discharge current in the cold state reflects a current of given capacity of the battery in a cold state. The discharging current 12, which may issue a battery at -18 ?� C without stress has not fallen below 9 for 30 seconds and 6 for 150 seconds.
Self-discharge - chemical processes in the battery and lead to its discharge when it is not connected consumers. Charged new car battery every day lost about 0.5% of its charge. Heat damage or contamination covers the battery self-discharge speed up the process.




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