Volkswagen Touran Service Manual: Leaking or Damaged Components except A/C Compressor, Reservoir or Receiver/Dryer

Volkswagen Touran Service Manual / Heating, Ventilation and Air Conditioning / Components, Replacing / Leaking or Damaged Components except A/C Compressor, Reservoir or Receiver/Dryer

Empty Refrigerant Circuit

Remove malfunctioning component.

Remove the A/C compressor.

Remove oil drain plug from A/C compressor.

Note

To speed up refrigerant oil drainage, turn A/C compressor by hand via ribbed belt or magnetic clutch plate.

Pour the used refrigerator oil out of the A/C compressor.

Then fill the A/C compressor with quantity of fresh refrigerant oil corresponding to quantity of refrigerant oil in original part compressor. Refer to → Rep. Gr.87.

Use different refrigerant oils and quantities for the various compressors. Refer to → Rep. Gr.87.

To ensure the compressor is lubricated at start-up, at least 80 cm³ of refrigerant oil must be poured into the compressor. The remainder can be added to the new reservoir or receiver/dryer. Refer to → Rep. Gr.87.

If dirt has penetrated into the compressor with the refrigerant circuit open (for example after an accident), compressor is to be replaced.

Flush the refrigerant circuit with compressed air and remove moisture with nitrogen. Refer to → Chapter "Refrigerant Circuit, Flushing with Compressed Air and Nitrogen".

Replace receiver/dryer or accumulator and restrictor.

Assemble, evacuate and recharge refrigerant circuit.

Refrigerant Still in Circuit

Discharge the refrigerant circuit.

Remove malfunctioning component, flush with compressed air, collect escaping refrigerant oil.

The new component is to be filled with the amount of refrigerant oil flushed out (plus 20 cm³ for evaporator, plus 10 cm³ for condenser, refrigerant pipes and refrigerant hoses) as fresh refrigerant oil fill.

Replace the restrictor depending on the vehicle.

Assemble, evacuate and charge the refrigerant circuit.

General Information

All components of the refrigerant circuit submitted for quality observation are always to be sealed (use original sealing caps of original part). ...

A/C Compressor, Replacing

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