🔍 Key Concepts

• Notice the oil jet shown in the illustration and where it directs lube oil in relation to the bearings. • Look at the scavenge oil and cavity drain paths and ask yourself whether oil is stored in this housing or quickly removed (i.e., is it a wet sump or a dry sump?). • Compare what you see with the ideas of splash/bath lubrication (bearings dipping into an oil level) versus oil being forced or sprayed onto the bearings.

💭 Think About

• Are the main bearings sitting in a pool of oil, partially or totally submerged, or are they mostly exposed with oil being delivered to them? • Does any rotating part appear to be dipping into oil and throwing (splashing) it around, or is the oil directed by nozzles/jets? • If the oil is immediately scavenged out of the bearing cavity, what does that imply about whether this is a dry or wet sump arrangement?

✅ Before You Answer

• Verify whether the illustration shows an oil level around the bearings (for a bath system) or just directed oil jets. • Check if any component is clearly acting as a slinger/splashing element versus a simple rotating shaft and bearings. • Confirm from the labels (oil jet, scavenge oil, sump vent) whether oil is being stored in the housing or just passed through and removed.