15.5. Removal and installation of the compressor of the air conditioning system

As work with system is potentially dangerous, we strongly recommend to provide all works connected with the air conditioning system, to dealer office of the BMW service or the specialist in conditioners. At least, do not remove any components of system (hoses, the compressor, nipple connections, etc.) to a full discharge of system the qualified specialist. Read about precautionary measures at the beginning of the Section Service of the Conditioner and Precautionary Measure.

At installation of the new compressor it is also necessary to replace an accumulator/dehydrator (see the Section Removal and installation of an accumulator/dehydrator of the air conditioning system).



  1. Make a discharge of the air conditioning system (see the Prevention above).
  2. Disconnect a negative wire of the battery.

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 the Section System of Protection of the Audio System from theft and language of an instrument guard where the procedure of installation of the necessary language is described.

  1. Disconnect conducting of the coupling of the compressor.
  2. Take off a driving belt (see the Head Routine maintenance of the car).
  3. Disconnect refrigerator lines from a back part of the compressor. Zakuporte open lines to prevent hit of moisture and dirt.
  1. Working under the car you otboltit the compressor from fixing arms, lift it and remove from the car.



  1. At installation of the new compressor follow the instructions attached to it concerning discharge of surplus of oil before its installation.
  2. The old coupling can be used on the new compressor.
  3. You make installation as it should be, the return to removal. All sealing rings should be replaced on new, specially made for use in air conditioning systems. Oil them special before installation.
  4. Make depletion, charging and check of system on existence of leaks by means of the same qualified specialist who made its discharge.