Rationale: Existing pulley section definition provides limited control of flange shape, resulting in variable results for mis-installed belts sometimes leading to warranty and customer dissatisfaction.
The revision seeks to specify a defined flange shape that will function robustly to reinstall misfitted belts within a couple of revolutions.
The new pulley section definition should be denoted as 'preferred' and the previous definition as 'optional'.
Engine componentsVehicle drive systems
Also known as: SAE J 1459
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