AG Mechanics CDE Practice Exam

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Prepare for the AG Mechanics CDE Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

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Valve tappet clearance is measured by using a:

caliper
feeler gauge
micrometer
ruler

The correct answer is: caliper

Valve tappet clearance is typically measured using a feeler gauge. A feeler gauge is a tool made up of several small lengths of steel of varying thickness, used to measure small gaps in machinery. When checking valve tappet clearance, the feeler gauge is inserted between the valve stem and the tappet to determine whether the gap is within the proper specified range. Using a caliper, micrometer, or ruler would not provide an accurate measurement for valve tappet clearance as these tools are not designed for this specific type of measurement in an engine.