Capacities For AUDI R8 (42_) From My 2008
Features Of The Refrigerant System:
- Restrictor
- Reservoir
- Two condensers switched in sequence
- "Denso" A/C compressor with A/C Compressor Regulator Valve -N280-. Refer to SYSTEM OVERVIEW - REFRIGERANT CIRCUIT / SYSTEM OVERVIEW - REFRIGERANT CIRCUIT (vehicle-specific repair information) and the parts information.
| Vehicle model | Production period | Total quantity of oil in refrigerant circuit in cm3 | Quantity of refrigerant oil in replacement compressor in cm3 | Differing features of this refrigerant circuit |
|---|---|---|---|---|
| Audi R8 | From 03/2007 to 11/2012 | 200 +
/-
10
|
200+
/-
10
|
A/C compressor "7 SEU 17" |
| From 11/2012 | 200 + /- 10 | 200 + /- 10 |
The replacement compressor contains the full quantity of oil intended for the refrigerant circuit. On A/C compressor replacement, the quantity of oil in the A/C compressor is therefore to be adjusted. Refer to REFRIGERANT CIRCUIT COMPONENTS, REPLACING .
These A/C compressors are available as replacement parts with different oil fill capacities, therefore pay attention to the exact part number. Refer to the parts information.
From the vehicle identification number 429 DN 000751 (time period of production from 11/2013) the refrigerant quantity for the refrigerant circuit was raised from 650 g to 680 g and the refrigerant oil quantity was raised from 150 ccm to 200 ccm. The increased refrigerant and refrigerant oil capacity applies retroactively to all vehicles. On vehicles that were built up to the specified vehicle identification number, check whether the refrigerant oil capacity was already topped up during a previous workshop visit. If not, fill the refrigerant circuit with an additional 50 ccm of refrigerant oil. Finally, check the refrigerant capacity information on the information label and if necessary, attach a new information label with the correct capacity and language (for example, the identification label with the part number 420 010 535 and the index BA with the labeling in German and English). Refer to the parts information and COMPONENT LOCATION OVERVIEW - A/C SYSTEM (vehicle-specific repair information). If there is no information label available with the correct capacity and language, amend the capacity information on the existing information label accordingly using a waterproof marker. Finally, increase the refrigerant oil quantity in the refrigerant circuit by 50 ccm if necessary and fill the refrigerant circuit with the above-specified refrigerant amount. Refer to.
A data plate may be attached to the A/C compressor by the manufacturer, indicating the part number and refrigerant oil quantity (however, this data plate is not visible on an installed A/C compressor on the Audi R8). Therefore note in the vehicle records (and on the information label with the refrigerant quantity) for vehicles that were installed with an A/C compressor with the smaller refrigerant quantity during production (vehicles up to the above-mentioned VIN), that the refrigerant oil quantity was already increased by 50 ccm during a workshop visit.
The reason for the different oil capacities inside the A/C compressor is due to the design of the A/C compressor (with or with an oil separator on the high pressure connection) or to the design of the refrigerant circuit if the A/C compressors are have the identical design. Pay attention to the different capacities. Too much oil in the refrigerant circuit leads to higher pressures and reduces cooling performance of the A/C system. Too little oil may lead to lubrication problems in the compressor, therefore note the specified refrigerant oil quantities.