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What is the replacement standard for pulley wear?

1 Answers

Leon

07/30/25 6:37am

Replacement standard for pulley wear: Pinch the middle upper and lower ends of the belt with one hand to check the belt play. If the belt play is significant, or if you start the engine and observe severe vertical bouncing of the belt when accelerating, it indicates a faulty pulley. Also, inspect the belt for any signs of being "bitten" (fine cracks between the teeth do not count). If there are none, the belt is still in good condition. Below is a related introduction to pulleys: 1. Definition: A pulley is a type of disc-hub component, generally relatively large in size. The manufacturing process typically involves casting or forging (larger designs usually use casting, with materials mostly being cast iron due to its good casting properties, while cast steel is rarely used due to its poor casting properties). Smaller sizes can be designed for forging, using steel as the material. 2. Application: Pulleys are mainly used for long-distance power transmission, such as in small diesel engine power output, agricultural vehicles, tractors, automobiles, mining machinery, machining equipment, textile machinery, packaging machinery, lathes, forging machines, power transmission for small-horsepower motorcycles, power transmission for agricultural machinery, air compressors, reducers, gearboxes, generators, cotton gins, etc. Before assembling the pulley, the final cleaning must be done with gasoline to ensure all parts are clean and dry, guaranteeing tight fitting surfaces free of oil stains and sufficient friction.

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