F 350 2WD Pickup V8-460 7.5L VIN G EFI (1997)
Accumulator HVAC: Service and Repair
Guidelines
Replacement of the suction accumulator/drier is necessary anytime a major component of the refrigerant system is replaced. A major component includes
A/C condenser core, A/C compressor, A/C evaporator core or a refrigerant hose/line. An A/C evaporator core orifice or O-ring is not considered a major
component but the A/C evaporator core orifice should be replaced whenever the A/C compressor is replaced for lack of performance.
In addition, the suction accumulator/drier should also be replaced if one of the following conditions exist.
1. The suction accumulator/drier is perforated.
2. The refrigerant system has been opened to the atmosphere for a period of time longer than required to make a minor repair.
3. There is evidence of moisture in the system such as internal corrosion of metal refrigerant lines or the refrigerant oil is thick and dark.
Procedure
1. Drain the oil from the removed suction accumulator/drier into a suitable measuring container. It may be necessary to drill one or two 12.7
mm (1/2 inch) holes in the bottom of the old suction accumulator/drier to make sure that all the oil has drained out.
2. Add the same amount of clean new refrigerant oil plus 59 ml (two fluid ounces) to the new suction accumulator/drier. Use only the oil
specified for the specific vehicle being serviced.
NOTE: When replacing the suction accumulator/drier, the procedure given here must be followed to make sure that the total oil charge in
the system is correct after the new suction accumulator/drier is installed.
