Commander 4WD V8-4.7L VIN P Flex Fuel (2007)
Hose/Line HVAC: Description and Operation
Plumbing - Rear
Line-A/C Liquid
DESCRIPTION
NOTE: 4.7L engine shown. Other engines similar.
The A/C liquid line (1) is the refrigerant line that carries refrigerant from the receiver/drier (5) to the A/C expansion valve (2). The liquid line is retained
to the A/C expansion valve by a tapping plate (3) which is integral to the A/C suction line (4). Models equipped with the rear heating-A/C system include
an extension tube (6) that connect the liquid line to the underbody liquid line (7) by use of a tapping block (8).
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. 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 liquid line is removed and installed.
If the A/C liquid line cannot be repaired and must be replaced if found to be leaking or damaged.
Line-A/C Suction
DESCRIPTION
NOTE: 4.7L engine shown. Other engines similar.
The A/C suction line (2) is the refrigerant line that carries refrigerant from the A/C evaporator to the A/C compressor (3). The A/C suction line is
retained onto the A/C expansion valve (1) by a tapping plate (4), which also secures the A/C liquid line (8). Models equipped with the rear heating-A/C
system include an extension tube (5) that connects the suction line to the underbody suction line (7) by use of a tapping block (6).
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.
