General information about charge and precautionary measure system at work with it. BMW the 5th E28/E34 series (from 1981 to 1993 of release)
Repair of BMW E28 and series E34 from 1981 to 1993
1. Cars of the BMW brand of 5-series
2. Engine
3. Cooling system
4. Power supply system
5. Ignition system
6. Control systems of the engine and decrease in toxicity of the fulfilled gases
7. System of production of the fulfilled gases
8. Coupling
9. Manual box of gear shifting (RKPP) and automatic transmission (AT)
10. Transmission line
11. Steering and suspension bracket
12. Brake system
13. Body
14. Control body sizes
15. Heater and air conditioner
16. System of onboard electric equipment
16.1. General information
16.2. The general information on search of malfunctions in electric chains
16.3. Removal and installation of the storage battery
16.4. Check of a condition and replacement of wires of the battery
16.5. General information on safety locks
16.6. General information on the relay
16.7. General information about charge and precautionary measure system at work with it
16.8. Check of system of a charge
16.9. Removal and generator installation
16.10. Replacement of a regulator of tension
16.11. Check and replacement of brushes of the generator
16.12. General information about system of start of the engine and a precautionary measure
16.13. Starter check on the car
16.14. Removal and starter installation
16.15. Removal and installation of the traction relay
16.16. Check and replacement of breakers of indexes of turn and alarm system
16.17. Removal and installation of switches on a steering column
16.18. Removal and installation of the lock of ignition
16.19. Removal and radio receiver installation
16.20. Removal and aerial installation
16.21. Removal and installation of components of an instrument guard
16.22. General information on the panel of alarm lamps of a reminder on term of service (SI)
16.23. Replacement of lamps in head headlights
16.24. Adjustment of a beam of head headlights
16.25. Removal and installation of the case of a head headlight
16.26. Replacement of lamps
16.27. Removal and installation of the motor of a screen wiper of windscreen / glass of a door of a back
16.28. Check of work and repair of a heater of back glass
16.29. General information on auxiliary system of safety (SRS)
16.30. Description and check of work of a control system by speed (темпостата)
16.31. Description and check of work of system of the central blocking of doors
16.32. Description and check of work of system of electric window regulators
16.33. Diagnostics of malfunctions of a suspension bracket of back wheels
17. Routine maintenance of the car
18. Size table and adjusting data
19. Schematic electric circuits
20. Governing bodies and operation receptions
21. System of onboard diagnostics - a principle of functioning and codes of malfunctions
 








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16.7. General information about charge and precautionary measure system at work with it

There are two types of the generators established on these models: Bosch and Motorola. Also there are three various levels of a current: 65 And, 80А and 90 A.Shtampovanny on a back surface of the generator serial number identifies type and current level. At any problems with the generator make checks of system of a charge (look the Section Check of system of a charge).

The regulator of tension and brush of the generator are executed in the form of uniform knot. In Bosch generators this knot can be removed and its components are served separately (look the Section Replacement of a regulator of tension).

On all models the generator is established on the left side of the engine and rotates a V-shaped belt from an engine pulley. In these systems two main requirements are the tension of a belt and service of the storage battery. Check of a tension of a belt of the engine and service of the battery are described in Head Routine maintenance of the car.

At ignition key turn in the situation "START" (Start) the lamp of control of charge/inclusion of ignition should light up, then immediately after engine start - to go out. If the lamp continues to burn, the system of a charge has malfunction (look the Section Check of system of a charge). Some cars are also equipped with the voltmeter. If the voltmeter shows abnormally high or low voltage, check charge system (look the Section Check of system of a charge).

On models up to 1986 at a peregoraniye of a lamp of control of charge/inclusion ignition operation of the generator on a charge stops. After 1987 in parallel the lamp of control established the resistor to provide current passing bypassing a lamp in case of chain break (peregorany lamps).

Precautionary measures

Be very careful, making electric connections to the generator, and pay attention to the following:

  • At accession to the generator of wires of the battery be convinced of the correct polarity.
  • Before carrying out repair of any parts of the car with application of electroarc welding disconnect from the battery and the wire generator.

If the radio receiver on your car is equipped with system of protection against abduction, before shutdown of the storage battery be convinced that the correct code of activization is known. Before a detachment of a wire apply for information to the Section System of protection of an audiosystem from theft and language of an instrument guard.


If after battery connection on the display of the dashboard there is a message in other language, for procedure of installation of language address to the Section System of protection of an audiosystem from theft and language of an instrument guard.

  • Never start the engine with the charger connected to the battery. Always before use of the charger of the storage battery disconnect both wires.
  • Never at the working engine disconnect from the battery or the wire generator.
  • The generator rotates a driving belt of the engine. If at the working engine under a belt hands, hair or clothes get, there can be serious traumas.
  • As the generator is directly connected to the battery, take measures not to short-circuit the main plug on the earth.
  • Before engine cleaning by hot steam wrap up the generator a plastic package with rubber tapes.

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16.6. General information on the relay
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16.8. Check of system of a charge