Hose/Line HVAC: Description and Operation

DISCHARGE LINE
The discharge line is made from reinforced rubber with a nylon liner on the inner walls. The line has a light weight aluminum fittings at the compressor and condenser end. The O-rings used to seal the connections are made from a special type of rubber not affected by R-134a refrigerant. O-rings must replaced whenever the line is removed and installed.

CAUTION: Use only O-rings specified for the vehicle. Failure to use correct O-ring will cause the connection to leak.

SUCTION LINE
The suction line is made from reinforced rubber. The line has a light weight aluminum fitting at the compressor end and a quick connect fitting at the expansion valve end. The quick connect has two O-rings to seal the connection made from a special type of rubber not affected by R-134a refrigerant. The O-rings must be replaced whenever the line is removed and installed.

CAUTION: Use only O-rings specified for the vehicle. Failure to use correct O-ring will cause the connection to leak.