🔍 Key Concepts

• Flow path of lube oil through a metal‑edge strainer (look at the arrows in the illustration). • Where sludge and dirt collect in this design (inside the disk stack, outside the disk stack, or at the bottom?). • How the T‑handle and drain connection are used during cleaning.

💭 Think About

• Trace the arrows to see whether oil passes from outside to inside the disks, or inside to outside. Then ask yourself: on which side of the disks would dirt be trapped? • Look closely at labels B, C, and D: which one is obviously the drain point, and where are the solids shown collecting in the cutaway? • Think about normal maintenance: would a single small turn of the handle be enough to scrape and flush all those disk edges, or would more motion be needed?

✅ Before You Answer

• Verify where the sludge is actually drawn in the picture – is it against the outer or inner disk surfaces? • Confirm which fitting is clearly the drain connection (bottom or upper center) by its shape and location. • Check whether particles larger than the disk spacing could physically pass through the gaps and continue upward with the flow, or if they would be stopped at the edges.