B. Conversion Procedure

1. Remove the compressor and drain the mineral oil. Inspect oil for any unusual metal content. If the compressor has to be replaced because it has failed, it will not be necessary to drain the mineral oil from the old compressor. However, the mineral oil must be drained from the new compressor.

NOTE:
SPECIAL EFFORT MUST BE USED TO KEEP ALL R-134'S SYSTEM COMPONENTS CAPPED TO PREVENT MOISTURE FROM ENTERING THE A/C SYSTEM OIL. MOISTURE IN THE OIL IS VERY DIFFICULT TO REMOVE AND WILL CAUSE A RELIABILITY PROBLEM WITH THE COMPRESSOR.

2. With the compressor off the vehicle, refill with new R-134a refrigerant oil in the amount called out in the Adaptation Component Chart.

NOTE:
BEFORE INSTALLING THE COMPRESSOR ON THE VEHICLE, CHECK THE COMPONENT CHART TO DETERMINE IF A CONTROL VALVE OR THE SUCTION/DISCHARGE FITTING "O" RINGS ARE REQUIRED REPLACEMENT PARTS. THESE PARTS ARE TO BE REPLACED AT THIS TIME. REFER TO THE COMPRESSOR IDENTIFICATION CHART FOR LOCATION.

3. Install the compressor on the vehicle using the new R-134a compatible gaskets or 0-rings.

4. Install the compressor on the vehicle using the new R-134a compatible 0-rings.

5. Remove and discard the filter/drier.

6. If required in the Component Chart, install the high pressure hose or pipe at this time.

NOTE:
IF A HIGH PRESSURE HOSE OR PIPE IS INSTALLED, IT INCLUDES THE REQUIRED R-134a ADAPTOR PORT.

7. Install the new filter/drier using new R-I 34a compatible 0-rings.

8. Install any additional 0-rings called out in the "0" Ring Location & Application Chart.

9. Clean old R-12 service ports with a steel brush.

NOTE:
REMOVE THE SCHRADER VALVE CORE FROM ALL R-12 SERVICE PORTS, FAILING TO DO SO WILL PREVENT THE SYSTEM FROM BEING EVACUATED OR FILLED WITH REFRIGERANT.

10. Refer to the Component chart and install the necessary low pressure and high pressure R-134a port adaptors. Position any 90° adaptors to allow for sufficient clearance in the engine compartment to attach R-134a service equipment couplings. Also check for proper clearance between the hood and the R-134a adaptor.

11. Evacuate the system for a minimum of 45 minutes at 26 in. Hg or greater. Charge the system with R-134a with the amount called out in the Adaptation Component Chart.

NOTE:
THE A/C SYSTEM SIGHT GLASS IS NOT VALID FOR DETERMINING THE CORRECT R-134a CHARGE LEVEL ON AN ADAPTED SYSTEM. THIS IS DUE TO THE RESIDUAL MINERAL OIL LEFT IN THE SYSTEM. IT IS HELD IN SUSPENSION AND DOES NOT MIX WITH R-134a REFRIGERANT. IT WILL APPEAR AS A WHITE "MILKY" STREAM OF REFRIGERANT THROUGH THE SIGHT GLASS.

12. Fill in the required blue R-134a A/C adaptation label, P/N 4762869, using a typewriter or ball-point pen. See label illustration for details. If possible, place the new label over the existing R-12 label. If the new label does not completely cover the existing label, remove the old label before installing the revised label. If the A/C information is part of a general vehicle information label, cut out only that part that pertains to the A/C system.

NOTE:
THE CLEAR MYLAR OVERLAY MUST BE INSTALLED OVER THE NEW LABEL.

13. Check system for leaks with approved R-134a equipment that meets Chrysler and SAE J1627 specifications.