RAM 3500 Truck 4WD L6-6.7L DSL Turbo VIN A (2007)
Hose/Line HVAC: Description and Operation
Plumbing
Description
DESCRIPTION
The A/C refrigerant lines and hoses are used to carry the refrigerant between the various A/C system components. The refrigerant lines and hoses for the
R-134a A/C system consist of a barrier-hose design with a nylon tube sandwiched between rubber layers. The nylon tube helps to contain the R-134a
refrigerant, which has a small molecular structure. The ends of the refrigerant lines are made from lightweight aluminum and braze-less fittings.
Any kinks or sharp bends in the refrigerant lines and hoses will reduce the capacity of the entire A/C system and can reduce the flow of refrigerant within
the system.
Operation
OPERATION
High pressures are produced in the refrigerant system when the A/C compressor is operating. Extreme care must be exercised to make sure that each of
the refrigerant system connections is pressure-tight and leak free. It is a good practice to inspect all flexible refrigerant hoses at least once a year to make
sure they are in good condition.
The refrigerant lines and hoses are coupled to other A/C system components with block-type fittings. An O-ring seal, or a flat steel gasket with an
integral O-ring (dual plane seal), is used to mate the refrigerant line fittings with A/C system components to ensure the integrity of the refrigerant system.
The refrigerant lines and hoses cannot be repaired and must be replaced if leaking or damaged.
