Removal, check of work and installation of a heater and air conditioner. 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
15.1. Removal, check of work and installation of a heater and air conditioner
15.2. Removal and control unit installation by operating modes of a heater and air conditioner
15.3. Removal and installation of the heat exchanger of a heater
15.4. Conditioner and precautionary measure service
15.5. Removal and installation of the compressor of central air of air
15.6. Removal and installation of the motor of the supercharger of the conditioner (E28 model / "retro")
15.7. Removal and installation of the condenser of central air of air
15.8. Removal and installation of an accumulator / degidrator of central air of air
15.9. Removal and evaporator installation
16. System of onboard electric equipment
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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15.1. Removal, check of work and installation of a heater and air conditioner

Removal

The retro models (Е28) use two separate motors of superchargers: one for ventilation and heating. And another for air conditioning. Modern models (Е34) have one motor of the supercharger. Removal and installation of the unique motor of the supercharger, and also the motor for ventilation and heating of the retro models are described below. Removal and installation of the motor of the supercharger for air conditioning of the retro models are described in the Section Removal and accumulator installation / дегидратора central airs of air of this Chapter.


If the radio receiver of your car is equipped with system of protection against theft, make sure that you gathered the correct code before a battery detachment.


If after connection of the battery of an inscription on an instrument guard appeared not in that language, address to the Section System of protection of an audiosystem from theft and language of an instrument guard where procedure of installation of the necessary language is described.


 PERFORMANCE ORDER

  1. Disconnect a negative wire of the battery.
  1. The motor of the supercharger is located behind a partition, under the access panel. Give screws of fastening of the panel in front...

... and fastening from above hold this panel

  1. Disconnect or cut off the plastic fastenings holding conducting on the panel, and take conducting aside.
  2. Remove the panel.
  1. Unbutton a fixing clip of a casing of the supercharger, and also a clip holding the motor of the supercharger.
 
  1. Disconnect conducting and remove the motor of the supercharger.

Check

You can check the motor of the supercharger, having submitted tension from the battery on motor plugs, having used the incorporated wires from a set for car start from an external source (make sure that blades of the fan will not touch anything at rotation). If the motor of the supercharger rotates fan blades with a high speed (this test is calculated on its high-speed work), it means that it is serviceable. If the motor does not work, or works slowly or is noisy, replace it.

If it is necessary to remove assemblies of blades of the fan, mark their arrangement on a shaft. At plant these assemblies were balanced and if not to establish them in just the same situation in relation to a shaft, it can lead to excessive noise at their work or to premature wear of bearings.

Installation

Installation make upside-down.

For the correct installation of a fixing clip, probably, it is required to turn the motor of the supercharger.



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15.2. Removal and control unit installation by operating modes of a heater and air conditioner