HARRISON 4-CYL Drain & Refill: Notes
NOTE:
The Harrison compressor DOES NOT have an oil sump. It's crucial that the compressor remains well oiled. It takes very little time to destroy this compressor if it runs dry.
The Harrison 4-cyl compressor is charged (new) with 6 ounces of refrigerant oil. Because compressor does not have an oil sump, it should not have to be removed for oil measurement (it retains very little oil). Note the following situations for checking and adding oil to this compressor.