A/C SYSTEM GENERAL SERVICING
Article Text (p. 4)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:48PMFig. 3: Identifying R-134a Hose & Line Connectors (Lexus)
Courtesy of Toyota Motor Sales, U.S.A., Inc.
REFRIGERANT OILS
Refrigerant R-12 based systems use mineral oil, while R-134a
systems use synthetic/Polyalkylene Glycol (PAG) oils. Using a mineral
oil based lubricant with R-134a will result in A/C compressor failure
due to lack of proper lubrication.
Use ONLY specified oil for the appropriate system and A/C
compressor. Always check the underhood A/C specification label or A/C
compressor label before adding refrigerant oil to A/C
compressor/system. See Fig. 2. The following R-134a refrigerant oils
are currently available.
Lexus
PAG Refrigerant Oil (ND-OIL 8) with 10P/10PA swashplate
(piston) compressor. Synthetic Refrigerant Oil (ND-OIL 9) with
through-vane (rotary vane) compressor.
Mercedes-Benz
PAG Refrigerant Oil (001 989 08 03).
Nissan
PAG Refrigerant Oil (KLH00-PAGR0) with rotary vane
compressor. PAG Refrigerant Oil (KLH00-PAGS0) with piston (swashplate)
compressor.
Saab
PAG Refrigerant Oil (40 74 787).
NOTE: Synthetic/PAG oils absorb moisture very rapidly, 2.3-5.6% by
weight, as compared to a mineral oil absorption rate of
.005% by weight.
SERVICE EQUIPMENT
