Last week’s article ended with the following: “As I was completing the job, it hit me what had happened and my first thought was: You Knucklehead, you caused this compressor to lock up!”
Sometimes we encounter information where directions instruct us to drain the compressor being removed from a system and measure the amount of oil that drains out. Then the next step is to subtract this number from the number of ounces that are supposed to be in the shipped replacement compressor.
We will focus on lubrication information that is often encountered and how it can be interpreted incorrectly and result in the incorrect amount of oil being installed in a system.
When draining oil from compressors which have drain plugs, proper draining procedures call for the removal of the drain plugs and the unit drained from both the drain plug hole and the suction and discharge ports.
When preparing to conduct diagnostics on a system using an electronically controlled variable displacement compressor, the diagnostic process needs to focus on four areas.
If you own a mobile A/C repair shop this is when you start to gear up for it, by replenishing your parts inventories and an important segment of those inventories is compressor oil.
That is viscosity and specifically why a replacement compressor might use a different viscosity oil than its OEM counterpart.
