Compressor Oil Drain Procedure - DENSO 6SEU16 Variable Displacement

If the Denso 6SEU16 A/C compressor is being replaced, some refrigerant oil must first be drained from the new A/C compressor. The 6SEU16 A/C compressor is filled with 100 milliliters (3.4 oz.) from the factory. Drain 60 milliliters (2.1 oz.) of refrigerant oil from the new 6SEU16 compressor. Use the following procedure to drain and measure refrigerant oil from the Denso 6SEU16 A/C compressor.

Fig 1: A/C Compressor & Drain Plug

Courtesy of CHRYSLER GROUP, LLC

1. Place the new A/C compressor (2) on a workbench and remove the drain plug (1).
   CAUTION:

   The 6SEU16 A/C compressor is filled with 100 milliliters (3.4 oz.) from the factory. Drain 60 milliliters (2.1 oz.) of refrigerant oil from the new 6SEU16 compressor when replacing only the compressor.

   NOTE:

   When replacing multiple A/C system components, see REFRIGERANT OIL CAPACITIES  to determine how much oil should be removed from the new A/C compressor (example: new 6SEU16 compressor and accumulator requires 60 ml. (2.1 oz.) of oil to be added to the system. 100 ml. (3.4 oz.) of oil is in new compressor. 100 ml. (3.4 oz.) minus 60 ml. (2.1 oz.) equals 40 ml. (1.4 oz.) oil to be drained from new compressor).

2. Position the A/C compressor so that the refrigerant oil can drain out of the drain port into a suitable clean measured container. Hold the A/C compressor in this position until the required amount of refrigerant oil is drained from the new compressor.
   CAUTION:

   Failure to properly adjust the refrigerant oil level prior to installation of a replacement compressor can prevent the A/C system from operating as designed and cause serious compressor damage.

3. Reinstall the drain plug. Tighten the drain plug securely.
4. Install the new A/C compressor onto the engine. Refer to COMPRESSOR, A/C, INSTALLATION .