Capacities, AUDI Q7 (4L_), From My 06

Features of the refrigerant system:

Expansion Valve
Depending on the vehicle equipment level with one or two evaporators
Dryer cartridge in fluid reservoir on condenser
Denso A/C compressors with an A/C compressor regulator valve -N280-, refer to [For engine(s) BPY, CETA, CCTA, CDMA, CEPB] Description and Operation (vehicle-specific repair information).

Vehicle model

Production period

Total quantity of oil in refrigerant circuit in cm ⁽¹⁾

Quantity of refrigerant oil in replacement compressor in cm ⁽¹⁾

Differing features of this refrigerant circuit

Audi Q7

As of 02.06

Vehicle with one evaporator

145 ⁽¹⁾ / _- 15

150 ⁽¹⁾ / _- 10 (A/C compressor for a 8-cylinder vehicle)
140 ⁽¹⁾ / _- 10 (A/C compressor for a 6-cylinder vehicle)

One evaporator

Vehicle with two evaporators

245 ⁽¹⁾ / _- 15

Two evaporators (see notes below)

⁽¹⁾

The replacement compressor is already filled with a specific refrigerant oil quantity (currently 140 or 150 / - 10 cm, depending on the compressor), this refrigerant oil quantity corresponds to the oil quantity designated for this refrigerant circuit on vehicles with one evaporator. On vehicles with two evaporators, a greater refrigerant oil quantity is required in the refrigerant circuit (currently an additional 100 cm) because of the longer refrigerant lines and the second evaporator. If the compressor is replaced after cleaning the refrigerant circuit, this refrigerant oil quantity must therefore be added to the refrigerant circuit (for example into opened lines or component connections) in vehicles with two evaporators. If compressor is replaced without having to clean the refrigerant circuit, the refrigerant oil quantity in the new compressor to be installed must be adjusted to the oil quantity poured out of the old compressor. Refer to REMOVAL AND INSTALLATION .

NOTE:

These A/C compressors are available as replacement parts with different oil fill capacities, therefore note capacity on the A/C compressor and the exact part number.

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 circuit leads to higher pressures and reduces cooling performance of the system. Too little oil may lead to lubrication problems in the compressor.

Too much oil in the 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.

A data plate may be attached to the A/C compressor by the manufacturer, indicating the part number and refrigerant oil quantity.