Audi A8 1994 - Compressor, Replacing Due to Leakage or Internal Damage

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erant oil equal to the amount poured out of the malfunctioning
A/C compressor.
Note
♦
If, for example, 70 cm
3
of refrigerant oil has been poured out
of the defective A/C compressor and 220 cm
3
out of the re‐
placement A/C compressor (a small quantity of refrigerant oil
remains in the A/C compressor). Fill the A/C compressor to be
installed with 70 cm
3
of refrigerant oil (use can be made of oil
poured out of replacement A/C compressor).
♦ Use different refrigerant oils and quantities for the various
compressors. Refer to
⇒ “3.4 Refrigerant Oil Capacities“, page 119 .
♦ If a greater quantity of refrigerant oil (more than approximately
80 cm
3
) has been poured out of the malfunctioning compres‐
sor, the remaining refrigerant oil can also be added to the
evaporator or reservoir/receiver. Refer to
⇒ “3.4 Refrigerant Oil Capacities“, page 119 .
All
– Replace the restrictor (only if there is on in this refrigerant cir‐
cuit).
– Assemble, evacuate and charge refrigerant circuit.
5.4 Compressor, Replacing Due to Leakage
Or Internal Damage
For example, because of noise or no A/C compressor output
– Discharge refrigerant circuit
– Remove A/C compressor.
– Clean refrigerant circuit (flush with refrigerant R134a, refer to
⇒ “1.4.13 Refrigerant Circuit Flushing With Refrigerant
R134a“, page 32 or blow through using compressed air and
nitrogen, refer to
⇒ “1.4.12 Refrigerant Circuit Flushing With Compressed Air
and Nitrogen “, page 29 ).
Note
♦ In the event of internal damage (compressor), check refriger‐
ant hoses and condenser. If, for example, shavings have
penetrated, clean refrigerant hoses and condenser (flush with
refrigerant R134a, refer to
⇒ “1.4.13 Refrigerant Circuit Flushing With Refrigerant
R134a“, page 32 or blow through using compressed air or ni‐
trogen, refer to
⇒ “1.4.12 Refrigerant Circuit Flushing With Compressed Air
and Nitrogen “, page 29 ), Replace refrigerant hoses if neces‐
sary.
♦ In vehicles with two evaporators, the refrigerant oil quantity in
refrigerant circuit may be greater than the quantity which is
found in the replacement compressor, if necessary add the
remaining refrigerant oil quantity to the refrigerant circuit. Re‐
fer to
⇒ “1.4.12 Refrigerant Circuit Flushing With Compressed Air
and Nitrogen “, page 29 .
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
194 Rep. Gr.00 - General, Technical Data