AG Mechanics CDE Practice Exam 2025 – Comprehensive Test Prep Resource

Question: 1 / 400

__________ are off-center enlargements on the camshaft that converts rotary motion to reciprocating motion.

Counterweights

Lobes

Lobes are off-center enlargements on the camshaft that are responsible for converting the rotary motion of the camshaft into the reciprocating motion needed to open and close the valves in an engine. Camshaft lobes push against lifters, which then push against pushrods or directly on the valves, causing them to open and close at the correct times in the engine's cycle. Counterweights, Pistons, and Valves do not serve this specific purpose in the engine's operation.

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Pistons

Valves

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