select the choice which best answers the following: before installing the impeller: a) lubricate impeller o…

select the choice which best answers the following: before installing the impeller: a) lubricate impeller o - ring b) mark seating surface on the sleeve c) remove the casing d) lower the pump into liquid

select the choice which best answers the following: before installing the impeller: a) lubricate impeller o - ring b) mark seating surface on the sleeve c) remove the casing d) lower the pump into liquid

Answer

Brief Explanations:

In pump - impeller installation, lubricating the O - ring helps in proper fitting and sealing. Marking the seating surface is usually done during disassembly for alignment during reassembly. Removing the casing is a step in accessing the impeller but not a pre - installation step for the impeller itself. Lowering the pump into liquid is a later operational step. Lubricating the impeller O - ring is a common pre - installation step.

Answer:

a) Lubricate impeller O - ring