RAM 1500 Van V6-3.9L VIN X (1997)
Refrigerant Oil: Service and Repair
Refrigerant Oil Capacities
When an air conditioning system is assembled at the factory, all components (except the compressor) are refrigerant oil free. After the system has been
charged and operated, the oil in the compressor is dispersed throughout the refrigerant system. The filter-drier(s), evaporator(s), condenser, and
compressor will each retain a significant amount of oil.
It is important to have the correct amount of oil in the refrigerant system. This will ensure proper lubrication of the compressor. Too little oil will result
in damage to the compressor. Too much oil will reduce the cooling capacity of the system.
It will not be necessary to check the oil level in the compressor or to add oil, unless there has been an oil loss. This may be due to a rupture or leak from
a refrigerant line, a compressor shaft seal, an evaporator or a condenser. If a rupture occurs, add 30 ml (1 ounce) of oil to the system after the repair has
been made. Oil loss at a leak point will be evident by the presence of a wet, shiny surface around the leak.
Refrigerant oil must be added when a filter-drier, evaporator, or condenser are replaced. See the Refrigerant Oil Capacities chart. When a compressor is
replaced, the oil must be drained from the old compressor and measured. Drain all the oil from the new compressor, then fill the new compressor with
the same amount of oil that was drained out of the old compressor.
