🔍 Key Concepts

• Difference between integral cylinders and replaceable cylinder liners in diesel engines • How to tell wet, dry, and jacketed liners apart from a cross‑section drawing • Location and path of cooling water around the cylinder in the illustration

💭 Think About

• Look closely at the cylinder wall area in the cross‑section: do you see a separate sleeve inside the block, or is the cylinder just the machined surface of the block itself? • Can you trace where the cooling water flows in the drawing? Does it touch the outer surface of the liner directly, or is there solid block material between water and liner? • If the liner is replaceable, what drawing clues (flanges, seals, gaps) would show it can be removed from the block as a separate piece?

✅ Before You Answer

• Verify whether the drawing shows a distinct inner sleeve (liner) separate from the cylinder block material. • Check if coolant (often shaded differently, e.g., blue) is directly against the outside of that sleeve or separated by block metal. • Confirm whether there are sealing rings or shoulders at the top/bottom of the liner, which indicate a replaceable insert rather than an integral cylinder.