🔍 Key Concepts

• Location of the cooling water jacket (item numbers around passage 8–9) relative to the quill parts • Which items form the check valve assembly shown enlarged in Fig. C (spring, valve, body, plug) • Which components are outside the cooling water space and can be removed without exposing the water jacket

💭 Think About

• Trace the path of the lubricating oil from the lubricator connection, through the check valve in Fig. C, into the quill, and then into the cylinder. At what point does it actually pass through the water jacket? • Look at each answer choice and find the corresponding item number on the drawing. If you remove that piece, does it open directly into the water space, the cylinder, or only into the oil passage? • Compare Fig. B and Fig. C: which figure actually shows the check valve parts (spring and valve)? Which figure shows a fitting that screws into the cylinder proper?

✅ Before You Answer

• Identify exactly which numbered part is the check valve body/plug holding the spring and valve in Fig. C. • Confirm which side of the water jacket wall each option (items 14, 6, and 4) is on in Fig. A. • Eliminate any option where removing the part would open directly into either the cylinder or the water jacket rather than just into the oil passage.