Water Pump. • Clean the sliding surface of the mechanical seal with a high flash

Impeller Assembly

• Clean the sliding surface of the mechanical seal with a high flash-point solvent, and apply a little coolant to the sliding surface to give the mechanical seal initial lubrica­tion.

• Apply coolant to the surfaces of the rubber seal [A] and sealing seat [B], and install the rubber seal and sealing seat into the impeller by pressing them by hand until the seat stops at the bottom of the hole.

Pump Impeller Inspection

• Visually check the impeller [A].

• If the surface is corroded, or if the blades are damaged, replace the impeller.