In a six month period, the illustrated...

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Question 1 of 205eccef9cbacbc34ba4d4594b

In a six month period, the illustrated device has needed to be replaced twice due to excessive grinding of part "E". Which of the listed aids might assist in reducing this problem? See illustration GS-0071.

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🔍 Key Concepts

• Look at how part E is loaded against part F and which way the shaft is turning. • Think about how contact pressure (force divided by contact area) affects grinding and wear between two faces. • Compare how each choice would change either the material hardness or the area over which the spring force is applied.

💭 Think About

• If part E is wearing out from grinding, is the problem more likely too much pressure on a small area, or the material being too soft/hard? • Which modification would spread the same spring force over a larger area between E and its mating surface? • Would changing the gasket thickness at H directly affect the actual rubbing faces that are wearing, or just the cover position?

✅ Before You Answer

• Identify clearly which surface actually rubs against E during normal operation (this is critical). • For each option, decide whether it would increase or decrease contact pressure at the E–F interface. • Eliminate any choice that does not directly change either the material pair in contact or the contact area between those two parts.

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