Audi A8 1994 - Default Chapter; Vehicle Mod-Production Period Total Quantity of Oil in Refrig-Quantity of Refrigerant Oil in Replace- el Erant Circuit in CM 3 Ment Compressor in CM

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Note
♦ The replacement compressor contains the full quantity of oil
intended for the refrigerant circuit. On A/C compressor re‐
placement, the quantity of oil in the A/C compressor is there‐
fore to be adjusted. Refer to
⇒ “5 Removal and Installation“, page 191 .
♦ At start of production, A/C compressors manufactured by Den‐
so (type 6 SEU 14) on 4 and 6 cylinder vehicles Engine and
type 7 SEU 17 on vehicles with 8 cylinders engine, this A/C
compressor does not have an A/C clutch (it is driven by the
engine). Compressors from other manufacturers may also be
installed at a later time, depending on the engine. Refer to
Electronic Parts Catalog and ⇒ Heating, Ventilation and Air
Conditioning; Rep. Gr. 87 ; Description and Operation (vehi‐
cle-specific repair manual).
♦ As of MY 12, certain engines and A/C compressors that in ad‐
dition to the A/C compressor regulator valve have an A/C
clutch -N25- attached to the belt pulley. Refer to ⇒ Heating,
Ventilation and Air Conditioning; Rep. Gr. 87 ; Description and
Operation (vehicle-specific repair manual) and to the Elec‐
tronic Parts Catalog.
♦ 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. Refer to the ⇒
Heating, Ventilation and Air Conditioning; Rep. Gr. 87 ; Re‐
moval and Installation (vehicle-specific repair manual) and
Electronic Parts Catalog.
♦ The reason for the different oil capacities inside the A/C com‐
pressor 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 ca‐
pacities. 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.
♦ A data plate may be attached to the A/C compressor by the
manufacturer, indicating the part number and refrigerant oil
quantity.
3.4.10 Capacities, Audi 100 and Audi A6 (4A_), from MY 98
Features of the refrigerant system:
• Restrictor
• Reservoir
• A/C compressor manufactured by Denso or Zexel / Valeo, re‐
fer to ⇒ Heating, Ventilation and Air Conditioning; Rep. Gr.
87 ; Description and Operation (vehicle-specific repair man‐
ual) and to the Electronic Parts Catalog.
Vehicle mod‐
el
Production period Total quantity of oil in refrig‐
erant circuit in cm
3
Quantity of refrigerant oil in replace‐
ment compressor in cm
3
Audi 100/Au‐
di A6
From 10.92
to 03.97
250 + 50 250 + 50
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
3. Specifications 129