MSI Hybrid Quintuplex, Technical Manual, Page: 86 / 88

pressure.

Solids in the pumping medium are trapped between the valve and valve seat.

Pumped fluid is hot, causing flashing of the fluid during the suction stroke.

Broken or worn internal moving parts.

Cracked fluid end.

Leaking fluid end plunger packing.

Blown valve cover seals.
Lubrication Vent Smoke

Insufficient flow of lubricating oil causing overheating of bushings or bearing surfaces. Continuing to
run the pump will cause expensive repairs.

Failure of bushings, bearings, or gear teeth. Continuing to run the pump will cause expensive repairs.

Vapor around the hot oil filler cap on a cold day.
Revision K 03/12/2019 MSI - A Division of Dixie Iron Works, Ltd. All rights reserved. Page 83