What should be done to a shaft after an old sleeve is removed and before a new sleeve is installed?

• A. thoroughly cleaned with a solvent and wiped down with a cotton cloth
• B. polished with emery cloth
• C. First do b, then c
• D. coated with a nonseizing compound, such as white lead

Answer: (C)

Prepare the shaft surface before installing the sleeve by smoothing it first and then protecting it with a non-seizing lubricant. Start by lightly polishing the shaft with emery cloth to remove burrs and create a smooth, even surface for the sleeve to slide over. After that, coat the shaft with a nonseizing compound (anti-seize) to prevent galling and seizing during installation and future removal. This order gives a clean, smooth surface and a lubricated interface, balancing ease of assembly with long-term reliability. Cleaning alone won’t prevent seizing, and applying a coating without smoothing the surface can leave burrs that cause wear—perform the polishing first, then the coating.