BMW 5 series E39

Since 1996-2001 of release

Repair and car operation



BMW E39
+ Introduction
+ The maintenance instruction
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ The power supply system and release
- Engine electric equipment
   + Ignition system
   + System of preheat of the diesel engine
   - Charge and start systems
      Removal and installation of the storage battery
      The maloobsluzhivaemaja storage battery
      Check of the storage battery
      The self-category of the storage battery
      Gymnastics of the storage battery
      The generator - the general data
      Security measures at work with the generator
      Check of pressure of gymnastics of the generator
      Removal and generator installation
      Check and replacement of brushes of the generator and pressure regulator
      Starter
      Removal and starter installation
      Removal, check and installation of the electromagnetic traction relay
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes
+ System of onboard diagnostics



The generator - the general data

Car BMW of 5th series has the alternating current generator. Depending on model of the car and its equipment generators of a nominal current strength 80 and 140 can be established And.

The generator is set in motion by the engine through клиновой a belt. And статор the generator windings (at a rotor an excitation winding) have a rotor.

The electric current to a winding of excitation of a rotor arrives through brushes and contact rings and creates an electromagnetic field in the generator.

The electromagnetic field of a rotor at its rotation changes position therefore in windings статора the electric current is formed.

As the storage battery is charged only by a direct current, the alternating current will be transformed in constant by means of the rectifier which is on диодной to a payment. The pressure regulator changes a current of a charge by inclusion and deenergizing of a current of excitation, depending on degree разряженности the storage battery. Thus the regulator supports to constants working pressure 14 In, irrespective of number of turns of the engine.

1 — a pulley
2 — a pressure regulator
3 — a soaking up branch pipe
4 — a bolt
5 — a bolt with a washer
6 — the air channel
7 — a collar
8 — саморез
9 — a nut