Volkswagen Polo Service & Repair Manual: Leaks or Internal Damage, for Example Noises or No Output

Volkswagen Polo Service & Repair Manual / Refrrigerant R134a Servicing / Components, Replacing / A/C Compressor, Replacing / Leaks or Internal Damage, for Example Noises or No Output

Note

For vehicles with an electrically-driven A/C compressor, de-energize the high voltage system before removing the A/C compressor. Refer to → Electrical System Hybrid; Rep. Gr.93.

–	Discharge the refrigerant circuit.

–	Remove the A/C compressor.

Note

In the case of internal damage (on A/C compressor), flush refrigerant circuit with refrigerant R134a. Refer to → Chapter „Refrigerant Circuit, Flushing (Cleaning) with Refrigerant R134a“.

If a different A/C compressor is installed with a different refrigerant oil, the refrigerant circuit is to be flushed with refrigerant R134a. Refer to → Chapter „Refrigerant Circuit, Flushing (Cleaning) with Refrigerant R134a“.

–	Replace receiver/dryer/dryer cartridge and expansion valve or reservoir and restrictor.

–	If a leak is present, check the expansion valve for debris or corrosion and replace if necessary.

–	Assemble, evacuate and charge the refrigerant circuit.

Flushing Not Necessary

Note For vehicles with an electrically-driven A/C compressor, de-energize the high voltage system before removing the A/C compressor. Refer to &# ...

Receiver/Dryer or Reservoir and Restrictor, Replacing

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Other materials:

Commercial Names and Designations
Refrigerant R134a is currently available under the following trade names: H-FKW 134a SUVA 134a KLEA 134a Note Different trade names may be us ...

Extraction and Charging System Safety Regulations
Make sure the shut-off valves are closed before connecting the charging system to the air conditioning system. Make sure the process is finished before disconnecting the charging system from the A/C system. This prevents any refrig ...

Running-in
First read and observe the introductory information and safety warningsPlease follow the regulations concerning running-in new parts. Running in a new engine Any new engine has to be run in during the first 1,500 kilometres. During its first few hours of running, the internal friction in the ...