Audi A4, S4

Since 2000 of release

Repair and car operation



Audi A4, S4
+ Introduction
+ Controls and receptions of safe operation
+ Current leaving and service
+ The engine
+ Systems of cooling, heating and the air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
- Systems of an electric equipment of the engine
   + Ignition and engine management system
   + System of preheat of the diesel engine
   + Diagnostics of systems of electronic control and the diagnostic equipment
   - Gymnastics and start systems
      The general information
      The storage battery - the basic data and acquisition of the new battery
      Check and gymnastics of the storage battery
      Replacement of the storage battery
      Storage of the storage battery
      Gymnastics system - the general data and security measures
      Check of system of gymnastics
      Removal and generator installation
      Removal and installation of a regulator of pressure/replacement of brushes
      System of start of the engine - the general information and safety measures
      Removal and starter installation
      Check of system of start of the engine
+ Manual box of a gear change
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment



The storage battery - the basic data and acquisition of the new battery

Address also to Section Check of a condition of the battery, care it and gymnastics.

Established 12 In the battery consists of six банок, containing positive and negative plates which are lowered in a solution of sulfuric acid. The battery problem includes production of a current for start of the car, ignition and for illumination, and also for other consumers of the electric power.

The battery possesses 100 % efficiency at 27°С. At-18°S efficiency falls to 40 %. Now to start the engine, it is necessary to have more than twice more energy, than it was necessary at 27°С.

Starting capacity (starting current) shows ability of the accumulator to start the car in the conditions of very cold weather. It shows a current in amperes which gives the accumulator within 30 seconds at-18°S without a power failure more low 7.2 volt (a minimum level demanded for reliable start). The above this indicator, the more starting capacity of the accumulator.

Reserve capacity shows time in minutes during which the accumulator gives a current 25А at 27°С, i.e. time during which the accumulator ensures functioning of all auxiliary devices in the car at night and in the conditions of bad weather at the faulty generator.

In winter conditions at-18°S and more low the battery it will be bad to be charged in connection with increase of internal resistance. At short trips in the winter the energy spent by the battery on start, is not restored. As a result the battery works on deterioration, is constantly discharged and eventually refuses.

In summer months after long trips the engine strongly heats up, and often happens that it is difficult for starting anew. Such «hot starts» sometimes demand as much capacity, how many and at cold weather, or it is more. Especially it extends on высококомпрессионные engines with the big working volume and cars with the conditioner. It once again underlines importance of a correct choice of the accumulator according to the car engine.

Acquisition of the new storage battery

Probably, the most important, on what the buyer should pay attention, are characteristics of the accumulator. Their three. The first – rated voltage, it at all batteries identical, and it is impossible to be mistaken. At purchase it is desirable to check up the storage battery a loading plug. The second – the capacity measured in amperes/hours (Ач), means, roughly speaking, the quantity of the electric power stored in the accumulator. On capacity depends, as it is long possible to twist a starter the engine, is more exact – how many it is possible to make attempts of start of the engine. The accumulator price is almost directly proportional to its capacity. And the third characteristic – a starting current (it is measured in amperes., i.e. a current submitted on a starter during start-up. On its accumulators can specify on four different systems: GOST (on domestic), EN (the standard of Uniform Europe), SAE (the American standard) and DIN. Last, German standard, is closest to ours STATE THAT and on the majority of the European is put "by default" i.e. when the standard system is not specified. The it is more, the faster and with большей force the starter will turn the engine.

It is better, if you buy the storage battery with those characteristics which are specified in the maintenance instruction of your car: so it will serve to you longer at the minimum expenses. It is possible to save and buy the battery of smaller capacity, but it will serve you less than usual term and it is bad to cope with winter start. Having bought the battery even ненамного большей capacities, you will not win in service life since constant недозаряд the accumulator will lead сульфатации plates, and will lose in money. Replace oil in the engine is better, and problems with start will not be.

On the accumulator the country-manufacturer and letting out factory should be necessarily specified, it is better, if with the address. The second – manufacturing date that is very important, if the accumulator filled in should be specified. Characteristics sheet, and here instruction presence should be applied on each battery it is unessential. It is connected by that in the West accumulators almost do not sell at retail, they are established by experts at service stations. The third – the qualitative accumulator is inconceivable without the qualitative case, good stoppers and smooth выводных the plugs quite often greased with technical protective greasing from oxidation and covered from above with colour plastic caps.