Durango 2WD V6-3.7L (2009)
Hose/Line HVAC: Description and Operation
A/C Suction Line - Description
Front
DESCRIPTION
The A/C suction line (9) is the refrigerant line that carries refrigerant from the A/C evaporator to the A/C compressor. The A/C suction line includes the
low side service port (6) and is secured to the A/C expansion valve (7) by the liquid line tapping plate (8). On models equipped with the rear heating-A/C
system, the A/C suction line also includes an extension tube that connects the suction line to the underbody lines .
NOTE: Replacement of the refrigerant line O-ring seals and gaskets is required anytime a refrigerant line is disconnected. Failure to replace
the rubber O-ring seals and metal gaskets could result in a refrigerant system leak.
The A/C suction line has no serviceable parts except for the rubber O-ring seals, low-side service port valve and cap. 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 A/C suction line
is disconnected.
The A/C suction line cannot be repaired and must be replaced if leaking or damaged.
Rear
DESCRIPTION
The rear A/C suction line (3) is the refrigerant line that carries refrigerant from the rear A/C evaporator to the A/C compressor. The rear A/c suction line
is retained into the liquid line tapping block (4) by a plastic retainer . Models equipped with the rear heating-A/C system include an extension tube (5)
that connects the suction line to the underbody line by use of a spring-lock type refrigerant line coupler (6) and a secondary retaining clip (2).
