Journey AWD V6-3.5L (2009)
Hose/Line HVAC: Description and Operation
A/C Underbody Extension Lines - Description
DESCRIPTION
Models equipped with the rear heating-A/C system use metal lines attached to the vehicle underbody to carry refrigerant and engine coolant to and from
the rear A/C evaporator and heater core. The underbody A/C lines are connected to the front A/C suction and liquid lines by use of underbody A/C
extension lines (2). The underbody A/C extension lines are connected to the front and underbody refrigerant lines with nut type fittings (1 and 3) and
O-ring seals.
NOTE: Replacement of the refrigerant line O-ring seals is required anytime an underbody refrigerant line is disconnected. Failure to replace
the rubber O-ring seals may result in a refrigerant system leak.
The underbody A/C extension lines have no serviceable parts except for the rubber O-ring seals. The O-ring seals used on the refrigerant line
connections are made from a special type of rubber not affected by R-134a refrigerant. The O-ring seals must be replaced whenever the underbody
refrigerant lines are disconnected.
The underbody A/C extension lines cannot be repaired and must be replaced if leaking or damaged.
