Refrigerant Oil: Service and Repair

COMPRESSOR OIL
The oil used to lubricate the compressor circulates in the system while the compressor is operating. Whenever replacing any component of the system or when a large amount of gas leakage occurs, add oil to maintain the original total amount of oil.

Single : 140 - 160 g

HANDLING OF OIL
1. The oil should be free from moisture, dust, metal filings, etc.
2. Do not mix oils.
3. The moisture content in the oil increases when exposed to air for prolonged periods. After use, seal the container immediately.

OIL RETURN OPERATION
To check the oil level or add oil, idle engine for 20 - 30 minutes and setting the heater control set to maximum cooling and blower level, to return the lubricant to compressor.

CHECKING AND ADDING COMPRESSOR OIL
In order to add oil to an operating compressor, check the compressor oil using the following procedure:




1. Perform the oil return operation, stop the engine, discharge the refrigerant, and dismantle the compressor from vehicle.
2. Discharge oil from the system line outlet.

NOTE: If compressor is cold, sometimes it can be hard to drain the oil. Warm up the compressor (approx. 40 - 50 °C) to drain the oil.

3. Check the amount of the discharged oil. If it is less than 70 cc, it means there is a little leak of oil. Perform the leakage test on each system connection, and repair or replace faulty parts if necessary.







4. Check oil for contamination and set the oil level in the following procedure:
a. When oil is clean
b. If oil is contaminated with metal fragments or other material, clean the receiver drier before charging the refrigerant into the air conditioning system.