The component labeled as part #20 in the...

The component labeled as part #20 in the illustration is used to __________. Illustration MO-0050

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🔍 Key Concepts

• Study how this mechanical cylinder lubricator is driven: which parts change timing and which parts change quantity per stroke. • Think about where a check valve would normally be located if its job were to stop backflow of oil and combustion gases. • Compare items 20, 21, 22, and 23 in Figure B and decide which of them is an adjustable control versus which are just indicators or moving elements.

💭 Think About

• Look at the linkage from the cam/eccentric (16–19 area) up to part 20. Does part 20 move with each stroke, or does it simply show that oil is passing? • If you wanted to change WHEN in the engine cycle the oil is injected, which component of this system would you expect to rotate or shift relative to the camshaft? Is that part 20, or another part? • If you wanted to change HOW MUCH oil goes to the cylinder without changing timing, would you adjust stroke length, plunger size, or a valve opening? Where is that function located in this drawing?

✅ Before You Answer

• Identify whether part 20 is inside the pumping element (21) or in the oil line going to the quill; this tells you if it meters, indicates, or blocks flow. • Verify which part in the illustration looks like a sight glass/indicator and which part looks like a check valve (usually a small spring-loaded valve in the discharge line). • Confirm which parts (likely 22 and 23) appear to be stroke or output adjustments; then decide what specific role part 20 plays in controlling or showing the oil delivery.

🔍 Key Concepts

💭 Think About

✅ Before You Answer