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Home >> Eagle >> 1996 >> Summit Base >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> General Servicing >> A/C System General Servicing >> USING R-12 & R-134a REFRIGERANT >> IDENTIFYING R-134a SYSTEMS & COMPONENTS >> Fittings & "O" Rings

Fittings & "O" Rings

All R-134a based A/C systems use 1/2" - 16 ACME threaded fittings (identifiable by square threads) and quick-connect service couplings. See Fig 1 . Besides the use of these fittings, most manufacturers will use Green colored "O" rings in R-134a systems.

Fig 1: Identifying R-134a Fittings & Quick-Connect Service Couplings
G93H19254Courtesy of AUDI OF AMERICA, INC.
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