Audi A4 with 2001- 2005 of release.
1. Operation and car maintenance service
2. The engine
3. Transmission
4. A running gear
5. The steering mechanism
6. Brake system
7. An onboard electric equipment
7.1. The general data
7.2. Power supplies system
7.2.1. The storage battery
7.2.2. Switching-off and connection of the storage battery in a motor compartment
7.2.3. Switching-off and connection of the storage battery in a luggage carrier
7.2.4. Removal and installation of the storage battery in a motor compartment
7.2.5. Removal and installation of the storage battery in a luggage carrier
7.2.6. Check of reliability of fastening АКБ
7.2.7. Accumulators with Ğa magic eyeğ
7.2.8. Measurement of pressure of rest
7.2.9. Check of level of electrolit – АКБ with stoppers
7.2.10. Check of density of electrolit in all sections – АКБ with stoppers
7.2.11. Pressure measurement under loading
7.2.12. Gymnastics of the storage battery
7.2.13. Strongly discharged АКБ
7.2.14. Fast gymnastics of accumulators
7.3. The generator
7.4. A starter
7.5. Relay blocks, sockets and safety locks
8. A body
9. Electric equipment schemes
 







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7.2.7. Accumulators with Ğa magic eyeğ

Fig. 7.12. ĞThe magic eyeğ АКБ


ĞThe magic eyeğ gives the chance receptions of the information on level of electrolit and about level of gymnastics of the checked accumulator (fig. 7.12).
Three various colour indications are possible.


THE NOTE
It is necessary to consider that if АКБ is more senior 5 years and the colour indicator of "a magic eyeğ is decoloured, it is necessary to replace the accumulator new.

THE NOTE
At accumulator additional charge, and also during movement under Ğa magic eyeğ air vials can be formed. They deform indications of the colour indicator of "a magic eyeğ.

Procedure for test
If accumulators are for technical reasons equipped by stoppers these stoppers are stuck by a polymeric film.
Before carrying out of control survey it is necessary slightly and to knock cautiously with the screw-driver handle on Ğa magic eyeğ – thus air vials disappear.
Consider indications of the colour indicator of "a magic eyeğ.

Control survey of the storage battery
Before carrying out of measurements, for example, pressure of a current of rest, density of electrolit or accumulator check under loading, it is necessary to spend control survey of the accumulator.
If the accumulator case is damaged – because of case damage probably вытекание electrolits.
If polar conclusions of the accumulator (conclusions АКБ) are damaged – because of damage of polar conclusions of the accumulator contact of connections of cables is not provided. Thereof there can be an ignition of a cable and occur failure in an electric equipment.
If its original stoppers are twisted in the accumulator – stoppers should be supplied by a sealing ring. At утере or damage it is authorised to use only original stoppers of the same design.


7.2.6. Check of reliability of fastening АКБ

7.2.8. Measurement of pressure of rest