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Repairing the air conditioning system - engine compartment > < Parts for securing the refrigerant circuit

Replacing and Installing Air Conditioning System Parts in Engine Compartment

Removing and installing the compressor
Removing and installing the compressor
Removing
  Note
t  Repairs must only be carried out in specialist service centres which have suitably trained personnel and are fitted out for working on the refrigerant circuit.
t  Attachment of the bracket for auxiliary units -4- → Engine; Rep. gr.19.
t  If the compressor only has to be removed from the bracket -4- because of the removal of other components, the refrigerant circuit must not be opened and the compressor with connected refrigerant lines must be attached free of stress to the body.
–  Drain the refrigerant circuit with the aid of the A/C service station.
–  Unhook the V-ribbed belt → Engine; Rep. gr.13.
–  Remove radiator fan → Engine; Rep. gr.19.
   
–  Removing refrigerant lines -1- from the compressor → Fig..
–  Slacken the screws which are accessible from above -3-.
–  Remove the sound dampening system → Body Work; Rep. gr.50.
–  Disconnect plug connection -2-.
–  Release bottom screw -3- and remove compressor.
Install
  Note
t  The total volume of refrigerant oil is contained in the spare part-compressor.
t  When replacing, pay attention to the prescribed volume of refrigerant oil in the refrigerant circuit see „Air conditioning system with refrigerant R134a“ → Air conditioning system with refrigerant R134a; Rep. gr.00 technical data, chapter „Replacing components of the refrigerant circuit“.
Installation is performed in the reverse order, pay attention to the following points:
–  Before fitting the new compressor rotate it 10 times by hand.
  S87-0253
–  When installing make sure that the dowel sleeves -5- are fitted.
   Tighten screws -3- to 25 Nm.
–  Attach refrigerant lines -1- to the compressor → Chapter.
  Note
The engine must not be started if the refrigerant lines are not connected to the compressor and the compressor is shut off with plugs (risk of overheating because of the internal refrigerant oil circuit).
–  Replace fluid reservoir with dessicator / dessicator insert → Chapter.
–  Fill the refrigerant circuit with the aid of the A/C service station.
–  Comply with the running-in instructions for the compressor → Chapter.
  S87-0253

Repairing the air conditioning system - engine compartment > < Parts for securing the refrigerant circuit