Adding Oil

If oil was removed from the A/C system during the recovery process or due to component replacement, it must be replenished at this time. Refer to "Refrigerant Oil Distribution" that follows for proper oil capacities.

1. Select the graduated bottle of replenishing polyalkylene glycol (PAG) synthetic refrigerant oil GM P/N 12345923 or equivalent.
2. Adjust the O-ring around the PAG oil bottle to the required oil charge level. Example: If bottle oil level is at 4 ounces and 1/2 ounce of oil is required, adjust O-rings to 3 1/2 ounces as final level mark.
3. Install the bottle on the oil injection system on the back of the unit.

Important

^ Keep the oil bottles tightly capped at all times to keep out moisture and contamination.
^ Do not open the oil injection valve while there is positive pressure in the A/C system. This will result in oil blow-back through the bottle vent. A/C system vacuum is required for this operation.
^ Never let the oil level drop below the pick-up tube while charging or replenishing. This will allow air into the A/C system.

4. Open the valve at the top of the plastic container and watch the level of oil being drawn into the system.
5. Close the valve when the required oil charge has been pulled into the system.