Volkswagen Polo Service & Repair Manual: 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. |
|
|
|
Note
For vehicles with an electrically-driven A/C compressor,
de-energize the high voltage system before removing the A/C
compressor. Refer to
&# ...
Other materials:
A/C System, Operating after Charging
Caution
If it is suspected that chemicals were added to the
refrigerant circuit to seal leaks, do not connect the
A/C service station and do not extract the refrigerant.
...
Contact Housings and Connectors, Repair Information
Note
Observe general notes for repairs on the vehicle electrical
system. Refer to
→ Chapter „Vehicle Electrical System, General Repair
Information“.
Allocation of crimp contacts with correct fit ...
Threaded Connections, Repairing
Special tools and workshop equipment
required
Torque Wrench 1331 5-50Nm -VAG1331-
Note
Do not use rust remover, contact spray or grease because the
lack of friction will cause the torque to be ...
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Flushing Not Necessary