| When there is no need to eliminate impurities in the refrigerant circuit e.g. for external damage after an accident |
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| Empty the refrigerant circuit with the aid of the A/C service station. |
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| Remove the air conditioning compressor. |
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| Unscrew the oil drain plug from the removed AC compressor (replace O-ring → Electronic Catalogue of Original Parts) and drain oil. In order to speed up the evacuation of the refrigerant oil, turn the AC compressor with the clutch disk of the magnetic coupling. Collect oil in a measuring vessel (disposal of used oil → Chapter). |
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| Drain oil out of the new AC compressor using the same method (attention - do not mix with the oil out of the removed compressor) and fill in again an amount of refrigerant oil which corresponds to the oil quantity drained (the refrigerant oil drained from the original part AC compressor maybe used). |
| If 70 cm3 of refrigerant oil was drained out of the defective AC compressor and 140 cm3 of refrigerant oil was drained out of the original part AC compressor (a small amount of refrigerant oil remains in the AC compressor). In this case, fill in 70 cm3 of refrigerant oil into the installed AC compressor. |
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| Vehicle with throttle - replace throttle. |
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| Assemble the refrigerant circuit, evacuate and fill again. |
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| Check the function of the air conditioning system. |
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