Pumps circulate the fluids an engine depends on, and a decline in any of them shows up quickly elsewhere — bearings starved of oil, or a cylinder head running without coolant. This group covers lubricating oil pumps, water pumps, fuel transfer and lift pumps, high-pressure injection pumps, and priming pumps. Doosan machines also carry substantial hydraulic pumps, though those are machine rather than engine components. Water pump failure on these engines usually shows as coolant seepage from the weep hole or bearing noise at the pulley, and because excavators and loaders often run in conditions where a temperature rise is not immediately noticed, a failing water pump is worth acting on as soon as it is identified.
AMS Parts supplies a wide range of pumps components for Doosan engines used in power generation, marine, and industrial applications. Browse the full range below, or contact us for specific requirements.
Browse our range of Pumps parts below. Use the search bar above to find a specific part number, or request a quote.
Coolant seepage from the weep hole, play or noise at the pulley bearing, and overheating under load. A weeping drain hole means the internal seal has failed.
No. Hydraulic pumps are machine components rather than engine components, though both are sourced through the same channels for Doosan equipment.
A worn oil pump, increased bearing clearance, a stuck relief valve, a blocked pick-up strainer, or fuel dilution. Confirm with a mechanical gauge before dismantling.
