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2026. 8. 13. 작업

난이도 & 준비물

증상

So I have recently acquired (for free) a circa 1973 Speedaire 20 gallon compressor with no history. After a short while of use the check valve failed and when I removed it I noticed it and the air manifold it was threaded into was all gunked up with oil. It actually wasn't that bad given the 40 years of age, but enough to destroy the plunger in the check valve and make things in there a bit messy. It is my understanding that the piston rings were letting some oil by, leading to the build up. I have since started cleaning out the gunk, ordered a new check valve, drained the oil, and removed the

처리 내용

The main difference between an air compressor and an internal combustion engine is the compressor doesn't have the heat/detonation phase which an engine does. This actually helps keep it cleaner than what you'd think. (So people don't think I'm crazy, an internal combustion engine and a compressor are both just air movers ... they just accomplish it a little differently). Here are a set of piston rings from an Ingersoll-Rand compressor: This is quite different from a set of rings from an internal combustion engine. Most engines have two compression rings and an oil control pair (which consists of two oil control rings and a spacer which all three reside in a single ring groove). The compressor set (and I don't know if this is typical, but appears as though it could be), has one compression ring, an oil scraper ring, and two oil wiper (oil control) ring sets. It seems to me Ingersoll-Rand is trying to keep oil out of the cylinder. My take on this is, if you are actually seeing an oil fi