Preliminary Information

Discharge the refrigerant from the system when replacing the following components:

- The shaft seal assembly
- The pressure relief valve (2)
- The rear head mounted pressure switches (3, 4)

Discharge the system even when the compressor remains on the vehicle during the above procedures.

Discharge the refrigerant from the system before any disassembly of the compressor except for clutch repair procedures.

Notice: Any attempt to use makeshift or inadequate service tools or equipment may result in damage and/or improper compressor operation.

Prepare a clean workbench covered with a sheet of clean paper. Prepare a location with clean trays for all the components being removed and replaced. Use the proper service tools. Ensure that the tools are clean.

All the components necessary for servicing the internal compressor are protected by a preservative process. All of the above components are packaged in a manner which eliminates the necessity of the following actions:

- Cleaning the components
- Washing the components
- Flushing the components

Use the components in internal assembly just as the components are removed from the service package. Do not open the seals and the protective packaging until just prior to the installation.

Drain the oil from the compressor when servicing or replacing one of the following components:

- The compressor rear head
- The compressor front head
- The cylinder and shaft assembly Measure the amount of oil drained. Record the measurement. Replace the drained oil with new oil.