Audi A4 2001 - Page 137

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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.
♦ The Audi A6 are equipped with different A/C compressors de‐
pending on engine and production period.
♦ The replacement part for this A/C compressor has different oil
capacities. Pay close attention to the exact part number. Refer
to ⇒ Heating, Ventilation and Air Conditioning; Rep. Gr. 87 ;
Removal and Installation (vehicle-specific repair manual) and
to the Electronic Parts Catalog.
♦ A data plate may be attached to the A/C compressor by the
manufacturer, indicating the part number and refrigerant oil
quantity.
♦ The compressor installed at the factory for a 10-cylinder TFSI
engine (Audi R S6) has a smaller quantity of refrigerant oil (70
+
/ - 10 cm
3
) than the compressor for the 10-cylinder FSI en‐
gine (Audi S6) and other engines (130
+
/ - 10 cm
3
)due to the
different testing procedures for the engines (the compressors
at present differ only in part number and quantity of refrigerant
oil, see also the compressor label). When adjusting the total
oil quantity in the refrigerant circuit for a 10-cylinder TFSI en‐
gine (Audi RS 6) at the factory, the oil quantity that was
reduced in the compressor (60
+
/ - 10 cm
3
), has to be filled
somewhere else in the refrigerant circuit. This is not necessary
in Service because the replacement A/C compressor is deliv‐
ered with the original oil capacity (130
+
/ - 10 cm
3
) (it would
only be necessary in Service if a new A/C compressor with a
lower oil capacity is being installed). Refer to the Electronic
Parts Catalog.
3.4.13 Capacities, Audi A6 (4G_) from MY 11 and Audi A7 (4G_) from MY 11
Features of the refrigerant system:
• Expansion Valve
• Fluid Reservoir
• Refrigerant pipe with inner heat exchanger.
• Denso A/C compressors with an A/C compressor regulator
valve -N280- , refer to ⇒ Heating, Ventilation and Air Condi‐
tioning; Rep. Gr. 87 ; Description and Operation (vehicle-
specific repair manual) and to the Electronic Parts Catalog.
Vehicle
model
Production
period
Total quantity of oil in re‐
frigerant circuit in cm
3
Quantity of refrigerant oil
in replacement compres‐
sor in cm
3
Differing features of this
refrigerant circuit
Audi A6 As of 02.11
120
+
/
-
10 120
+
/
-
10
• Denso A/C compres‐
sor, type 6 SEU 14 with
an oil separator
Audi A7 As of 10.10
120
+
/
-
10 120
+
/
-
10
• Denso A/C compres‐
sor, type 6 SEU 14 with
an oil separator
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
3. Specifications 133