E39 series BMW 5

since 1996-2001 of release

Repair and car operation



E39 BMW
+ Introduction
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
+ 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 low-served storage battery
      Check of the storage battery
      Self-category of the storage battery
      Charging of the storage battery
      The generator - general information
      Security measures at work with the generator
      Check of tension of a charging of the generator
      Removal and generator installation
      Check and replacement of brushes of the generator and tension 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 - general information

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

The generator is actuated by the engine through maple a belt. The rotor and a stator of the generator have windings (at a rotor an excitement winding).

The electric current to a winding of excitement 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 situation therefore in windings of a stator the electric current is formed.

As the storage battery is charged by only a direct current, the alternating current will be transformed in constant by means of the rectifier being on a diode payment. The regulator of tension changes a charge current by inclusion and switching off of a current of excitement, depending on degree of a razryazhennost of the storage battery. Thus the regulator supports to constants working tension 14 In, irrespective of number of turns of the engine.

1 — a pulley
2 — a tension 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