Oilers/Plant Tenders (HHC) Civil Service Practice Exam

When lubricating a duplex direct-acting steam pump feeding to a boiler, what is an important step for effective lubrication?

1. Change the oil completely

2. Swab the rods and check the hydrostatic lubricator

3. Clean the external parts of the pump

4. Disconnect the pump before lubrication

The correct answer is: Swab the rods and check the hydrostatic lubricator

When lubricating a duplex direct-acting steam pump that feeds a boiler, swabbing the rods and checking the hydrostatic lubricator is crucial for effective lubrication. This step ensures that any buildup of debris or contaminants on the rods is removed, which can interfere with their movement and the overall operation of the pump. Additionally, verifying the hydrostatic lubricator ensures that it is functioning correctly and is providing the necessary lubrication to the moving parts of the pump. Adequate lubrication is essential to minimize wear on the components, maintain efficiency, and prevent potential breakdowns. The other options may not directly contribute to the effective lubrication process. For example, changing the oil completely might not be necessary if the oil is still in good condition, and simply cleaning external parts does not address the internal lubrication needs. Disconnecting the pump, while potentially safe, is not required for the lubrication process itself when appropriate safety measures are in place. Hence, focusing on the rods and the lubricator directly impacts the pump’s operation and maintenance.