Installing Air Conditioning Compressor

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Information 

• New compressors are pressurized and are filled with the required amount of oil for the refrigerant circuit! 
• The remaining oil quantity in the individual components must therefore be taken into account! 
• Refrigerant oil from the compressor or refrigerant oil removed by suction from a previously run air-conditioning system may no longer be used (special-category waste)! 

1. If a new compressor is installed, first correct the refrigerant oil quantity in the air conditioning compressor. → Checking Refrigerant Oil In "New" Air Conditioning Compressor 
2. Replace O-rings for the refrigerant lines and wet the new rings with refrigerant oil.
3. Install air conditioning compressor.
   Fig 1: Installing Air Conditioning Compressor

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   1. 3.1. Fit air conditioning compressor in -direction of arrow-  .
   2. 3.2. Remove stoppers from the refrigerant lines and connections on the air conditioning compressor.
   3. 3.3. Connect air conditioning lines and secure with the fastening screws -1-  . → Tightening torque: 20 Nm (15 ftlb.) 

      Information 

      Check that the line is routed correctly -arrow-  to avoid damaging the line.

      Fig 2: Locating Line Routing For Air Conditioning Compressor

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   4. 3.4. Place air conditioning compressor in installation position.
4. Secure air conditioning compressor.
   1. 4.1. Place holder -2-  in installation position -arrow-  .
   2. 4.2. Tighten the three fastening screws -1-  . → Tightening torque: 23 Nm (17 ftlb.) 
      Fig 3: Locating Air Conditioning Compressor And Screws

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5. Connect plug connection for air conditioning compressor.
   1. 5.1. Slide plug-in coupling into the holder -arrow A-  .
   2. 5.2. Plug in the connector -arrow B-  until it engages securely.
      Fig 4: Connecting Plug Connection For Air Conditioning Compressor

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6. Secure holder for refrigerant lines.
   1. 6.1. Insert rubber sleeve -3-  and close the holder -2-  .
   2. 6.2. Tighten fastening nut -1-  .
      Fig 5: Securing Holder For Refrigerant Lines

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7. Connect positive crankcase ventilation hose to the oil filler neck.
   1. 7.1. Place positive crankcase ventilation hose in installation position.
   2. 7.2. Connect the hose until the plug-in coupling -arrow-  engages securely.
      Fig 6: Connecting Positive Crankcase Ventilation Hose To Oil Filler Neck

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8. Secure junction point for terminal 30 line in the engine compartment.
   1. 8.1. Position junction point for terminal 30 line in installation position.
   2. 8.2. Insert the two spacer sleeves -2-  .
   3. 8.3. Tighten the two fastening nuts -1-  . → Tightening torque: 10 Nm (7.5 ftlb.) 
      Fig 7: Identifying Junction Point And Nuts

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