Last Updated :2025/11/20

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A unit (equal to one ordinary degree) used to measure the piston travel (position) e.g. to adjust ignition. When the piston is at its highest point, known as the top dead center (TDC), the crankshaft angle (crank angle) is at 0 crank angle degrees (CAD).

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crank angle degree

To set the ignition timing precisely, the mechanic rotated the crankshaft to 10 crank angle degree before top dead center (TDC).

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To set the ignition timing precisely, the mechanic rotated the crankshaft to 10 crank angle degree before top dead center (TDC).

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