Durango 2WD V8-4.7L (2008)
Hose/Line HVAC: Description and Operation
Liquid Line
Front Plumbing
DESCRIPTION
The A/C liquid line is the refrigerant line that carries refrigerant from the A/C condenser to the A/C evaporator. The A/C liquid line is serviced in two
sections. The front section of the liquid line (1) connects between the A/C condenser and the receiver/drier (2). The rear section of the liquid line (3)
connects between the A/C receiver/drier and the A/C expansion valve (7) and includes the high side service port (5) and a tapping plate (8) that secures
the suction line (9) to the A/C expansion valve. On models equipped with the rear heating-A/C system, the rear section of the A/C liquid line also
includes an extension tube that connects the liquid line to the underbody lines See: .
NOTE: Replacement of the refrigerant line O-ring seals and gaskets is required anytime a refrigerant line is opened. Failure to replace the
rubber O-ring seals and metal gaskets could result in a refrigerant system leak.
The A/C liquid line has no serviceable parts except for the rubber O-ring seals, high-side service port valve, cap and retainer clip (4). The O-ring seals
used on the connections are made from a special type of rubber not affected by R-134a refrigerant. The O-ring seals must be replaced whenever the
liquid line is disconnected.
The A/C liquid line cannot be repaired and must be replaced if found to be leaking or damaged.
Rear Plumbing
DESCRIPTION
The rear A/C liquid line (1) is the refrigerant line that carries refrigerant from the A/C condenser to the rear A/C evaporator. The rear A/C liquid line
serviced in two sections and includes a tapping plate (4) that retains the A/C suction line (3) See: . Models equipped with the rear heating-A/C system
include an extension tube (8) that connects the liquid line to the underbody line by use of a spring-lock type refrigerant line coupler (6) and a secondary
